Whether all-solid batteries, which are favored by Good enough, can really become mainstream power sources

The father of lithium batteries, Goodenough, published in electronics, a subsidiary of nature, described the history of the invention of rechargeable lithium-ion batteries and predicted the future development of lithium batteries.

According to Goodenough, the current lithium battery system has made great progress compared to the original, but it is still difficult to meet the performance needs of consumers for electric cars, and all-solid batteries are a very effective choice to solve this dilemma.

In fact, all-solid battery batteries do have a huge performance advantage as the most popular technology direction among the many "next-generation lithium battery technologies."

Yuhuigen, general manager of Beijing Weilan New Energy Technology Co., Ltd., said that solid state batteries have ten properties: they are expected to inhibit lithium dendrites, are not easy to burn, are not prone to explosion, have no continuous interface reaction, and there is no leakage and drying of electrolytes. Better high temperature performance, no gas, reduced raw material purity requirements, the positive electrode selection surface is wide, the volume of inactive substances is reduced, and the inner core can be connected in series.

Of course, the defects of all-solid batteries are also relatively obvious. At present, the main bottlenecks are mainly the conductivity, internal resistance, interface impedance, and compatibility of solid electrolytes. Therefore, at this stage, the research and development of major enterprises focuses on the design and preparation of solid polymer electrolytes and inorganic solid electrolytes, as well as the solid / solid interface construction and stabilization technology; On the basis of this, the research of battery production technology and special equipment is improved to achieve mass production of products.

From the perspective of industrialization, there are currently only 2,900 solid-state battery vehicles in French Boluolei that are commercialized. Other companies are accelerating the production of solid-state batteries. Many companies claim to have made breakthroughs. The mass production time node is concentrated around 2025.

2025 For the development of lithium power technology, it is early and early, and it is still relatively late. It is difficult to ensure that 2025 is really the world of solid-state batteries. After all, the development of other battery technologies is not lagging behind. For example, fast-charging batteries represented by Toshiba in Japan, graphene batteries represented by Samsung, and fuel cells that are also in full swing may become the main source of power for electric vehicles. In particular, it depends on the development of various technologies.

Here's a look at new technologies and events in the lithium industry this week.

1, South Korea lithium battery material new breakthrough, electric vehicle mileage doubled

The team, led by Dr. JangBo-yoon of Korea Energy Research Institute, announced that it had successfully developed a silica Nano powder that could be doubled in vehicle battery capacity and that, after using it as a cathode material for lithium batteries, the mileage of an electric car can be doubled for a single charge. It is expected to be mass-produced in January next year, and electric vehicles can travel 500 kilometers in a single charge.

More specifically, with the introduction of low-cost Silicon materials ($2-3 per kilogram) and induction heat generators, the cost is only 30-50 per cent of that of Japanese competition.

R&D personnel are working with a company to develop new products, which will be mass-produced as soon as January, including Tesla Inc.. ) including global battery manufacturers.

Comments: should be bragging no doubt. Life expectancy, energy density, doubling rate and other properties are all unknown, but only talking about mileage, people familiar with electric power batteries should understand that this data has no meaning at all, let alone the positive material that can be mass-produced next year. How many years after the battery was applied, it was hard to say whether 500KM of battery life was still competitive.

2, Zhongding integrated power battery production intelligent logistics technology breakthrough

The "Power Li-ion Battery Production Intelligent Logistics Set System" independently developed by Wuxi Zhongding Integrated Technology Co., Ltd. has recently passed the acceptance of scientific and technological achievements. The evaluation committee believes that the results of this project fill the gap of the domestic new energy power battery intelligent production logistics integration system and are at the leading domestic level in the field of lithium ion battery production logistics equipment technology and production control integration technology.

"The project realizes the automation and synchronization of logistics and information between the production processes of lithium batteries, collects relevant information of the production process in real time, and establishes a product quality tracking system. The evaluation committee believes that although the processing process of new-energy lithium batteries is mature, due to the low degree of system integration and integration, no automated and standardized safe production process has yet been formed.

The successful implementation of this project will improve the automation and intellectualization of the new energy powered lithium battery production process, and promote and accelerate the standardization of the industry. In addition, the project breaks the foreign technology monopoly, which is of great significance for promoting the overall development of the upstream and downstream industrial chain of the power lithium battery in China and comprehensively improving the technological level of the smart manufacturing industry.

Comments: In the current lithium industry, almost every line of production is labeled as smart manufacturing. However, in fact, smart manufacturing in China is generally low level. The so-called big data and informatization are mostly just a concept. The main goal is automation. However, abroad, many production lines truly quantify all factors (including the environment) and make them part of the production process. This is a gap that needs to be addressed at home.

3, domestic fuel cell life exceeded 5,000 hours

HYMOD developed by Xinyuan Power Co., Ltd.(hereinafter referred to as "Xinyuan Power"), a company owned by Dalian Institute of Technology. -Type 300 vehicle fuel cell electric reactor module, using high stability and high performance "membrane based catalytic lamellar electrode design" and high reliability "composite bipolar plate structure", after life test and vehicle application verification, It has broken through the 5,000-hour durability difficulties of automotive fuel cells and has become the first fuel cell product that has exceeded 5,000 hours of durability independently developed in China. At the same time, the product also achieves low-temperature start-up of the electric reactor at -10 °C and storage at -40 °C.

As an important direction for the development of new energy vehicles, after two decades of R&D and verification of hydrogen fuel cell automotive technology, it has begun to enter the commercial introduction period, and major international car companies have successively launched hydrogen fuel cell commercial models. Fuel cell electric reactor is the core component of fuel cell vehicle, and its durability and reliability are the key problems in the practical application of fuel cell vehicle. According to the technical requirements for the commercialization of fuel cells proposed by the United States DOE, the durability of fuel cell electric reactors needs to reach 5,000 hours.

The HYMOD?-300 fuel cell stack module developed by Xinyuan Power has broken through this difficulty and has excellent engineering reliability. It has been successfully applied to fuel cell vehicles in China: including the first fuel cell in China's Ministry of Industry and Information Technology. Car - Rongwei 750 fuel cell car, and China's first, the world's fourth commercial fuel cell car - SAIC Chase FCV80.

Comments: despite the booming domestic fuel cells, but almost all limited to passenger cars, passenger car industry news is very little, because passenger and commercial vehicles used fuel cell engines are not a system at all, technology is very different. The 5,000 hours service life is a watershed in the fuel cell technology of passenger cars, and there is very little that can be done in China. In technology alone, the new source power is indeed the best domestic fuel cell, but its practicality, but also through the test of time.

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