Recycling used lithium batteries is a good business.

　　However, at present, mainstream battery recycling enterprises have to face a big trouble, that is, the process of battery recycling consumes a lot of energy, has high economic cost, and will produce a large number of toxic by-products.

　　At the beginning of February, Lawrence Berkeley National Laboratory (LBL) announced on its official website that the relevant team of the laboratory had developed a Quick-Release Binder. When lithium-ion batteries using this quick-release binder are recycled, they only need to be disassembled and put into alkaline water at room temperature, and the electrode components can be separated by gentle shaking, and then the required components can be filtered out of the water and air-dried.

　　At present, the relevant teams are cooperating with onto technologies, an American battery recycling company, to conduct tests, which will soon be introduced to the market.

　　It is understood that the binder is a colloidal substance used in most types of batteries (including lithium-ion batteries and commonly used alkaline batteries). Every battery has two electrodes — — A positive electrode and a negative electrode. The electrode is made of conductive chemicals that generate current, and the adhesive binds these active chemical components together and fixes them in a proper position to achieve consistent and lasting performance.

　　The quick-release adhesive invented by Lawrence Berkeley National Laboratory staff is made of two commercially available polymer materials, polyacrylic acid (PAA) and polyethyleneimine (PEI), which are connected by chemical bonds between positively charged nitrogen atoms in PEI and negatively charged oxygen atoms in PAA.

　　When the solid bonding material is placed in a solution containing sodium hydroxide (Na+OH – ) in alkaline water, sodium ions will enter the connection site, thus separating the two polymer materials. The separated polymer dissolves in the liquid, releasing any electrode components embedded in it.

　　The left vial contains a copper foil of the battery current collector. After the quick-release adhesive is dissolved, the valuable electrode components in the battery have been completely released. In the vial on the right, the adhesive is rapidly dissolving in alkaline water. In contrast, the traditional binder strongly adheres the electrode material to the current collector like glue, which makes it difficult to separate and recycle the battery electrode material.

　　This is in sharp contrast with the current recycling of waste lithium-ion batteries. It is understood that taking the pyrometallurgical method of lithium-ion battery recycling technology as an example, it is necessary to chop and grind the battery and separate the metal and elements after combustion. The recycling process is not only high in energy consumption and cost, but also releases toxic chemicals that must be handled carefully.

　　The quick-release adhesive of Lawrence Laboratories team can be used to manufacture the positive and negative electrodes of batteries, and the price is about one tenth of that of the two most commonly used commercial adhesives for batteries.

　　Liu Gao, a senior scientist in the field of energy technology in Berkeley Lab, a member of the Energy Storage Center of Berkeley Lab and the project leader, said: "If we don’t stop burning batteries and throwing them into the trash can, we will run out of resources in the next decade. Cobalt and nickel are not enough, and we must recycle them, otherwise we can’t keep up with the market demand for batteries. "

　　Another member of the team said, "In the laboratory scale, preparation is very easy, and we don’t think it will be difficult to promote it to the commercial scale." The team believes that this material can be applied to batteries of all sizes, from small batteries in mobile phones to energy storage batteries in power grids.

　　The team’s tests show that this adhesive can be applied to various battery types, such as button cell in the picture.

　　In late September 2022, this technology was rated as one of the 100 revolutionary technologies developed globally in 2022 by R&D 100 Awards.

　　OnTo Technology, an American battery company, is working with Liu Gao’s team to complete product testing and bring it to market. The existing experiments show that the quick-release adhesive is very stable under high voltage and low voltage, and researchers now plan to use this adhesive to build a prototype lithium-ion battery to analyze its performance.

　　According to Steve Sloop, the founder of OnTo Technology, the rapid release of adhesive represents a paradigm shift in battery design. This design paradigm is no longer to design the battery first and try to create a recycling process afterwards, but to become the first design for recycling.

　　Assuming that the test goes well, the technology will smoothly transition to commercial manufacturing. Steve Sloop said, "The battery does not contain perfluoroalkyl and polyfluoroalkyl substances (PFAS), which is also a great achievement — — PFAS is a compound used to make non-stick coatings and many other products, but it may cause many health-related problems. "

　　It is understood that the development of this quick-release adhesive has been supported by the Office of Energy Efficiency and Renewable Energy of the US Department of Energy.

One is from the auxiliary temple.

Smart Car Reference | WeChat official account AI4Auto

Just now, the official announcement of Xiaomi Automobile was finalized:

A technical conference was held on December 28, and Lei Jun emphasized that,Send-only technology.

News instantly rushed to the hot search:

Just a few days ago, Xiaomi Automobile also carried out"Technology giant, eco-car"The preheating, but unexpectedly attracted extremely kryptonian executives to open a group to ridicule.

The car has not been sent yet, and the frame has been noisy. The heat of Xiaomi car and the strength of giving it to friends can be seen.

After Tesla, another catfish is really coming!

Xiaomi Automobile: A technical conference will be held on December 28th.

Just now, Xiaomi Automobile officially announced on major platforms that it will hold a technical conference at 2 pm on December 28. Lei Jun immediately said:

This time, only technology will be distributed, not products.

Some bloggers speculate that many hardware parameters should be announced at the technical conference.

The location was not specified in the announcement, but considering that the time coincides with the "Millet Annual Science and Technology Feast", it is speculated that it should be Beijing.

From March 30, 2021, it was the spring conference of Xiaomi, and Xiaomi announced the official announcement to start building cars, which is just right today.1000 days.

This will be the most important press conference about Xiaomi Automobile in 1000 days.

In fact, the official account for the announcement was only opened on major platforms last night. On the Weibo platform, Lei Jun and Lu Weibing personally "drained" and sent Weibo @ Xiaomi Auto.

Lu Weibing also added, "Continue to work overtime tonight", so we saw the announcement just now.

The strongest catfish of the year is really coming.

Catfish attack: the car hasn’t started yet, and the plane has started to make noise.

Not long ago, Xiaomi Automobile carried out the pre-heating of "technology factory, eco-car". When this Slogan came out, it caused a hot discussion and debate for a while, and there were extremely embarrassing executives who couldn’t sit still and started a group.

Zhao Chunlin, vice president of Krypton, gave an example of an "ecological scene". Later, Weibo was deleted and a one-button protection mode was started:

Zhu Ling, vice president of Krypton, and Guan Haitao, CMO (chief marketing officer) also participated in the delegation. One of them took out Apple and Amazon to demonstrate the concept of "eco-car making":

Guan Haitao, a polar CMO who took office soon, then left a message in the comment area and mentioned a failure case that everyone is familiar with:

There’s nothing to hate about starting a group diss before the car leaves.

New enemies and old grievances.

On the first day of Xiaomi Automobile Technology Conference, December 27th happened to be the release time of Krypton 007.

It’s hard to say it’s a coincidence, because Krypton 007 was originally planned to be released in early January, but later it was advanced, just in time for the first day of Xiaomi Automobile Technology Conference.

Briefly introduce Krypton 007 and Xiaomi SU7:

Extreme krypton 007 pre-sale224,900 yuanStarting and wheelbase2928mmThe car is over 4.8 meters long.car, maximum endurance under CLTC condition870km, full stack800VHigh voltage architecture.

Xiaomi SU7, with a 3-meter wheelbase, the duty-free catalogue shows that there are models with a battery life of800km, will be equipped with 800V high-voltage platform.

Therefore, the positioning of the two cars belongs to the same C-class sedan, and the battery life is close. Both of them have 800V platforms, and each has its own advantages. It is a "new enemy".

There is still old hatred in the "new hatred"-

Guan Haitao, CMO, was the CMO of Glory China District before. In September this year, he left Glory to join Extreme Krypton.

In the era of smart phones, Xiaomi and Glory have been playing as close as a bee, taking the cost-effective route together, and the executives of both sides don’t know how many rounds they have bombarded on social platforms.

Especially after the car was started, Xiaomi also poached Hu Zhengnan, a senior executive of Geely and former president of Geely Research Institute, who is now an investment partner of Shunwei Capital founded by Lei Jun. Weibo’s whereabouts often coincide with the latest news of Xiaomi Automobile.

Even a bowl of jiaozi sent in the winter solstice a few days ago triggered a brain hole among netizens and guessed the price of Xiaomi SU7:

However, after the official announcement of Xiaomi Automobile, more netizens still ran to the "Zhengzhu" to urge them to make more progress. Xiaomi Automobile is getting closer and closer, and Redmi Automobile should also arrange it:

There are also bloggers who hope that Lei can always keep his original heart:

Still isShui clothing executives, is still19.99.

It is best to get a full refund after ten years like Xiaomi 1.

One More Thing

People who meet will meet again..

Just now, Huawei’s terminal issued an announcement, which started blind subscription at the autumn conference, and the M9 official announcement file of the "year-end great contribution" that has been preheated for a long time will be released at 2: 30 pm tomorrow on December 26th.

In the fiery smart car battlefield, Huawei and Xiaomi met again.

— finish —

The countdown to the 2023 smart car selection!

As a content platform that pays attention to the automobile industry from the intelligent dimension, and as the most influential community in the field of smart cars, Smart Car Reference provides references and footnotes for practitioners and readers by annual inventory and selection.

The deadline for this selection is:January 26, 2024

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　　The Japanese side is keen on whitewashing what is wrong, trying to create the illusion that nuclear polluted water is safe and harmless by launching an intensive public relations offensive at home and abroad. This practice exposes its selfishness of not caring about the global marine environment and public health but only caring about its own interests.

　　The legitimacy, legality and safety of Japan’s plan to discharge nuclear polluted water into the sea have been questioned by the international community. Protests in Japan and neighboring countries have come and gone, and the voices of opposition from the international community have continued. Japan should have seriously responded to the concerns of the international community and made every effort to dispose of nuclear polluted water in a scientific, safe and transparent way. However, the Japanese side is keen on whitewashing what is wrong, trying to create the illusion that nuclear polluted water is safe and harmless by launching an intensive public relations offensive at home and abroad. This practice exposes its selfishness of not caring about the global marine environment and public health but only caring about its own interests.

　　The Japanese side pushed the plan of discharging nuclear polluted water into the sea, which was accompanied by a well-planned public relations offensive from the beginning. Established in 2012, Reconstruction Agency is responsible for the reconstruction of disaster areas, but the agency allocates public relations funds every year to instill in people the message that the impact of Fukushima nuclear accident has been eliminated. On April 13th, 2021, on the day when the Japanese government unilaterally decided to discharge the nuclear polluted water into the sea, Reconstruction Agency released the propaganda posters and videos made in advance in its official website, in an attempt to "win a good impression" by packaging the indelible radioactive elements in the nuclear polluted water into a mascot image. This move caused serious dissatisfaction among the Japanese people and the international community. The people of Fukushima indignantly pointed out that "(these propaganda) is completely out of place with the grim reality facing Fukushima." In the end, Reconstruction Agency had to withdraw the related products.

　　For more than two years, instead of learning a lesson, Japan has continued to carry out a series of publicity actions to the public around the so-called safety of nuclear polluted water. Many Japanese newspapers, TV stations, etc. publish and broadcast a large number of advertisements about the so-called safety of nuclear polluted water, disturbing and covering up people’s worries and opposition. The Japanese government has repeatedly called the nuclear polluted water that has been treated by the "multi-nuclide treatment system" but still contains many radionuclides "treated water" in an attempt to dilute its pollution characteristics and potential harm. The Japanese government has also set up a special fund with a total amount of 80 billion yen (about 4 billion yuan), and plans to provide "compensation" to the fishing-related industries in areas affected by the discharge of nuclear polluted water into the sea, in an attempt to avoid troubles with the so-called "compensation fee". This is another proof that the Japanese side covers up the harm of nuclear polluted water discharged into the sea.

　　The Japanese side has also stepped up its public relations with some countries, international institutions and organizations, trying to win over all parties to endorse its plan to discharge nuclear polluted water into the sea. In April this year, at the press conference of the meeting of ministers of climate, energy and environment of the Group of Seven, Japanese Minister of Economy, Trade and Industry Yasutoshi Nishimura said that the decommissioning of the Fukushima nuclear power plant, including the steady progress in the discharge of nuclear polluted water into the sea, would be welcomed. German Minister of Environment, Nature Protection, Nuclear Safety and Consumer Protection Lemcke retorted on the spot, saying that "we cannot welcome the discharge of nuclear polluted water into the sea". The Japanese government also used the NATO Summit, the East Asia Cooperation Series Foreign Ministers’ Meeting, the Eastern Caribbean Fisheries Ministers’ Meeting and other occasions to defend the Fukushima nuclear pollution water discharge plan.

　　Whether it is to launch a public opinion offensive at home or to lobby and win over internationally, the Japanese side has used its strength in the wrong place. All parties concerned strongly oppose Japan’s plan to discharge nuclear polluted water into the sea, and demand that Japan stop pushing the plan to discharge nuclear polluted water into the sea, fully communicate with stakeholders including neighboring countries in a sincere manner, effectively dispose of nuclear polluted water in a responsible manner, and accept strict international supervision. However, so far, Japan has been bent on promoting the plan of discharging nuclear polluted water into the sea, not only failing to fully study and demonstrate other disposal schemes, but also failing to seriously respond to the concerns of the international community. Its selfish approach has disappointed the international community.

　　No matter whether it is a public opinion offensive at home or lobbying internationally, Japan’s small moves can’t dispel the doubts of the domestic people and the international community about the discharge of nuclear polluted water into the sea. Recently, Japanese fishermen have repeatedly reiterated their opposition to nuclear pollution water discharging into the sea, and the opposition party in South Korea has also expressed the Korean people’s concerns and opposition to the plan through letters. People in many countries held protests in front of Japanese embassies and consulates in the Philippines, new york, Sydney and other places, demanding that Japan stop the plan of discharging nuclear polluted water into the sea. Because people are well aware that once Japan’s plan to discharge the sea is implemented, it will impose unpredictable nuclear pollution risks on the international community.

　　Discharging nuclear polluted water into the ocean is an adventurous gamble that harms human beings. Japan should face up to the concerns of the international community, shoulder its due moral responsibilities and obligations under international law, and find a proper way to dispose of nuclear polluted water. Until the concerns of the international community about the legitimacy of the nuclear polluted water discharge scheme, data reliability, effectiveness of purification devices and uncertainty of environmental impact are resolved, Japan should not start the nuclear polluted water discharge without authorization.

As many runners know, there are two kinds of running postures, namely, quick running and striding.

In fact, there is no difference between the two running methods. Runners can choose the running method that suits them according to their body shape and muscle strength.

This article will briefly analyze the characteristics and differences between the two for everyone.

First, the brisk running method

Trot refers to a running method that uses a smaller stride to speed up the pace frequency. This running method can not only reduce the up-and-down movement range of the body, ensure the stability of the running state, but also reduce the burden on the feet, which is suitable for practitioners who have no exercise habits.

There are several key points in brisk running:

Summary: The brisk running method can easily speed up or slow down the running pace by controlling the pace. When the exerciser wants to increase the speed, he will unconsciously increase the stride, which will increase the burden on his feet. Therefore, by speeding up the pace frequency, the running speed can be improved while minimizing the burden on his feet.

Second, the striding method

The striding method is different from the brisk running method. It is a kind of running method that can show vitality and be more ornamental by increasing the stride length to improve the speed.

It is reasonable to say that if we can speed up the pace frequency on the basis of increasing the stride, it will be the fastest running method, but the strode running method has a greater impact when landing, which requires runners to have corresponding muscle strength. Stride running is suitable for runners with good physical strength, strong muscle strength and long legs (higher height).

It is difficult for beginners to judge whether they have the muscle strength and physique needed for striding. Therefore, it is suggested to adopt brisk running first, and then gradually increase the stride to find the stride that suits them best.

The striding method has the following key points:

In short, determining the running method suitable for your body shape and muscle strength is helpful to achieve the goal of running the whole course or shorten the completion time.

The sky in our city is clear today.

At 15: 00, the temperature in the city was around 4℃

It is expected that the temperature will enter the recovery mode in the next two days.

The highest temperature in the urban area can reach 8-9℃ on the 11th to 12th.

However, the lowest temperature is only around -3℃

The temperature difference between day and night is large.

Has entered the "March 9",

Why does the temperature rise instead?

From the meteorological analysis,

The cold air intensity on the 9th was weak.

Makes the heating mass in central China

It can extend northward from 10th to 12th.

Temperature rise is rare.

Yin Yingying, a senior meteorological engineer, said, "Although the temperature rise this time is not drastic, it is rare. The biggest feeling for us is naturally’ difficulty in dressing’. Wearing too much is too hot and wearing too little is too cold. Coupled with indoor heating, we can only adjust our clothes in time."

This temperature rise is an accidental phenomenon.

Does not mean the end of winter.

From midnight after 13th to daytime after 14th.

Affected by cold air

There was a strong wind cooling process

It will bring a northerly wind of 4-5 and a gust of 7 to Jincheng.

And the temperature is reduced by about 4-6 DEG C.

Everyone should pay attention to the temperature change and adjust their clothes in time.

In addition, the atmospheric diffusion conditions in our city were poor on the 12th to 13th.

There are moderate and short-term severe haze

Please take good health protection when friends go out.

Weather forecast for the coming week

tonight

fine with occasional clouds

Breeze, minimum -3℃

Thursday, January 11th

fine with occasional clouds

Breeze, 9 to -3℃

Friday, January 12th

fine with occasional clouds

Breeze, 8 to -2℃

Saturday, January 13th

fair to cloudy

Breeze, 6 to -1℃

Sunday, January 14th

cloudy to sunny

Breeze to north wind 4-5 gust 7

3 to -1℃

Monday, January 15th

fair to cloudy

Breeze, 4 to -5℃

Tuesday, January 16th

Cloudy to overcast

Breeze, 4 to -3℃

Wednesday, January 17th

Warrington

Breeze, 6 to -3℃

Forward it and remind friends around you!

Editor | Han Zhen

Source | Tianjin Meteorological Beijing News Beijing Meteorological

Original title: "Weather | Can autumn pants be taken off? The temperature will rise to 9℃ tomorrow. Is the winter in Tianjin over? 》

Read the original text