The end of lithium batteries and the dazzling new battery technology

February 28-March 2, 2018 Japan International Secondary Battery Storage Exhibition (BATTERYJAPAN) held in Tokyo, Japan at the Ming Exhibition Center. As one of the largest battery exhibitions in the world, this exhibition brings together secondary batteries, capacitors, various related high-end technologies, materials, components, and advanced devices for the production and development of secondary batteries and capacitors. It has attracted a large number of visitors from global secondary battery manufacturers, battery users, new generation car manufacturers, and electronic manufacturers. It has become an important window for the development of the battery industry.

Each year, high-tech Li-Power meets with participating Chinese companies and practitioners. It hopes to observe the Japanese battery exhibition from the perspective of experts and practitioners in these lithium industries and analyze the industrial changes and developments behind the exhibition.

[Wen / Sheng Xiao Technology Development Manager Zhuzhengjun New energy battery Circle]

The annual BatteryJapan arrives on schedule at the BigSight Convention and Exhibition Center in Tokyo. During the visit, Chinese power was felt everywhere: from a large number of Chinese visitors and exhibitors to two of the four keynote speeches from Chinese companies (BYD and CATL). In the circle of friends, they continued to see the sharing of some friends, as well as the live broadcast of ginger beauty. For a moment itch, want to write some of their own knowledge and feelings, if there are deficiencies and bias, please also forgive me.

# BatteryJapan 2018 # Rising chinese lithium battery Industrialization Force

At the Japanese Battery Exhibition, there are still some small pride in seeing the keynote speech of Chinese companies. Some of the post-hearing feelings are summarized as follows:

Maxell.

It feels a bit like an ad, but the technical route mentioned in it is worth learning. By 2020, Maxell will use "solid electrolytes + high Silicon negative poles" with the goal of increasing battery capacity to 1.5 times what it is now.

BYD

Pursue the closed-loop of the lithium battery industry to deal with the problems caused by the shortage of Co resources and soaring prices. Tom pointed out that the solution provided by BYD is:

1 Gradient utilization of lithium batteries: power cells-& GT; Energy storage / unmanned logistics transfer robots, etc.-& GT; Battery recovery and resource reuse(95 % of Co can be recovered).

2 Optimization and selective terminal application of LFP cathode materials. For example, E6 now uses LFP batteries, but its range can be further optimized to 400Km. Although the energy density of NCM or NCA is higher than LFP, LFP still finds applications on energy storage and electric buses.

The inspiration is that the technology itself has no advantages or disadvantages, but cares about the appropriate application scene and the refinement of the technology.

CATL

With R& D to improve the industrialization ability of lithium power technology to achieve cost reduction and maintain the advantage of product technology. Dean Leung mentioned R&F several times in his report. D is the foundation of CATL, combined with the experience of the people and the word of mouth of the industry, this is true and thought-provoking. The application of computer simulation technology in material development and core design has also been mentioned several times and is impressive.

Computer simulation technology has been widely used in the industrial field in Europe and North America. It is remembered that several laboratories studying abroad are doing this, and some are still corporate projects. But it is not common in China, especially in the lithium battery industry, which hopes to inspire colleagues in industry or universities.

At the same time, Dean Liang also shared CATL's technical route. By 2020, the combination of high nickel positive and SiC negative poles enabled the battery's energy density to reach 250-350Wh / kg; In 2025, HV positive and lithium metal negative poles were passed, and the energy density reached 350-450 Wh / kg; After 2030, the Li-Air battery reached 450 +(it feels like a horse race on the road of energy density).

The inspiration is: He is the leader of the current Ling Dynasty, and he knows that he was walking on the road yesterday. And with a sentence, "The road is long and far, I will seek it up and down" to share.

Tesla

More surprisingly, the Tesla report is not about the Model, but on home storage applications. PowerWall was introduced in depth, a bit like a product promotion. However, it is undeniable that the space for the domestic energy storage market is indeed infinite. While it may be difficult for the vast majority of Chinese cities, it is still very practical for rural areas.

# BatteryJapan 2018 # Some lonely lithium batteries

In fact, come to Japan, with the purpose of learning, in a hurry to Japan's lithium-ion battery technology, but a little disappointed. Perhaps, as a friend said, good technology and materials are not necessarily at the show. In the exhibition, materials for Silicon negative poles include Silicon materials, binders, and electrolytes. There are not many booths. The exhibition area of the equipment is far inferior to CIBF, and even inferior to the Beijing Battery Exhibition.

It can be seen from this that China's position in the industrialization and industrialization of lithium battery batteries should be applauded by friends of lithium electric equipment.

# BatteryJapan 2018 # dazzling new battery technology

Hydrogen fuel cells are the highlight of the show compared to the slightly lonely lithium batteries. New battery technologies such as solid-state batteries and Mg-Air batteries are also competing.

Hydrogen fuel cell

H2 fuel cell is a separate library, can be described as the limelight. Tesla's electric sports car is slightly embarrassing inside (although the author also admits that ModelX is indeed equipped with a push device, but at this stage it can only rub in and touch the steering wheel). Both Toyota and Honda exhibit their dye battery cars, except that Toyota is a truck(and a beautiful receptionist) and Honda is a car.

What is striking is Panasonic's HomeFuelCell system (called Ene-farms in Japan), which can decompose liquefied gas(gas) into hydrogen for FuelCell power generation. The water vapor released by the reaction can also be used as a heat source and can be used in the home. I heard that many sets have been sold and are now very popular in Europe. It has to be said that Japan has been a few streets away from the world in the development and application of H2 fuel cells, but it can not be dismissed as inferior. After all, China has the world's largest market and there are many powerful capabilities. Afraid of being sprayed).

Solid state batteries, Mg air batteries

Solid state batteries also have bright spots at the show, but the photos were forgotten and no comments were made. Mg Air Battery has two photos, one of which is Furukawa's MgBox display. A white-haired grandfather, Liso's paper unpack, then poured water into the carton. The lamp was lit during the moment and became a charge. Bao, next to a beautiful woman in the sweet waxy narration, it can be said that people eat melons and mountains, hard is not crowded in. Feel that this box can be used as a must for home travel. Interested friends can refer to the attachment.

# Battery Japan 2018 # An eye-opening detection technique

When it comes to testing technology, we have to admire the Japanese for their research on technology. The entrance to the pavilion is an entire hall of testing equipment. The common SEM, SEM, and DSC do not mention that JEOL can quantitatively analyze the gas generated by battery charging and high temperature reactions. Weekly flight time quality analyzer (see figure). I believe that colleagues who want to study the gas generation mechanism of batteries (especially soft packs) should be interested. Another instrument that impresses me is a microscope that can visualize real-time observations of the internal reaction of the battery. It can be described as a device for studying the expansion state of the electrode charging and discharging process and the solid-state battery reaction (there is video, but the file type does not support it). The author is also very eager to own, but unfortunately, when he inquired about 300W soft sister coins, he took a business card and walked away. It is said that a domestic lithium battery enterprise has started, we all understand. It is expected that universities will be able to consider a few lithium-powered cattle, and then spend some testing fees to rub with.

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