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The commercial application of proton exchange membrane fuel cells is limited by the slow oxygen reduction kinetics of the cathode. At present, the most effective strategy to improve the catalytic activity of oxygen reduction is to optimize the bonding energy between the catalyst and oxygen containing species through the regulation of transition metal M (M=Fe, Co, Ni, Cu, etc.) and precious metal Pt alloying, so as to enhance the catalytic activity of oxygen reduction.(Lithium - Ion Battery Equipment) Recent stud

With the soaring price of international crude oil, research on various new energy sources has become the focus of public attention. As a power source, electric energy has been widely used in various vehicles. Lithium ion battery has become the first choice of power electric energy for its advantages of high energy mass ratio and energy volume ratio, no memory effect, more rechargeable times, and long service life. As a new power technology, lithium-ion batteries must be connected in series to meet the demand for

Why do we need to develop a "cobalt free battery"? Cobalt free battery VS graphene battery technology. In the current era when new energy vehicles are developing in full swing, whoever can make a breakthrough in power lithium-ion battery technology can set off a wave of industry changes and take the lead in the new travel era. At present, the research on batteries can be roughly divided into solid state batteries, fuel power lithium batteries and "cobalt free batteries". These three types of bat

According to statistics, the global demand for lithium-ion batteries has reached 1.3 billion, and with the continuous expansion of the scope of use, this data is increasing year by year. Because of this, with the rapid increase in the use of lithium-ion batteries in various industries, the safety performance of batteries has become increasingly prominent, which requires not only excellent charging and discharging performance of lithium-ion batteries, but also higher safety performance. Why did the lithium-ion batte

Abstract: In view of the use of power lithium-ion batteries in groups, each lithium-ion battery requires protection against charging overvoltage, discharge undervoltage, overcurrent and short circuit, and the problem of equalizing the charging of the whole group of batteries during the charging process, this paper analyzes the design method of a battery pack protection board with equalizing charging function that uses a single lithium-ion battery protection chip to protect any group of lithium-ion batteries in seri

Recently, the incombustible battery technology developed by Micromacro held a global announcement in Beijing Water Cube. This 8-year research and development achievement has far-reaching significance for the whole new energy. It is understood that the incombustible battery technology has dealt with the safety dilemma surrounding lithium ion batteries from both active and passive defense levels. It is an innovative and leading new technology in the battery industry and is expected to refresh the global safety techno

General series charging At present, lithium ion battery packs are generally charged in series, which is critical because of its simple structure, low cost and easy implementation. However, due to the differences in capacity, internal resistance, attenuation characteristics, self discharge and other performances between single lithium-ion batteries, when the lithium-ion battery pack is charged in series, the single lithium-ion battery with the smallest capacity in the battery pack will be the first to overflow. A

Nissan Automobile and Nissan ARC announced on March 13, 2014 that they have developed a decomposition method that can directly observe and quantify the electronic movement in the cathode material during the charging and discharging of lithium ion batteries. By adopting this method, it is possible to develop high-capacity lithium-ion batteries, thus helping to extend the range of pure electric vehicles (EVs). To develop lithium-ion batteries with high capacity and long life, it is necessary to store as much lithi

Although both the national level and the company level have great hopes for hydrogen fueled vehicles, some experts seem not optimistic about this. "The key technologies have not been solved, so we should go back to the laboratory for continuous research. It is unreasonable to call for the development of hydrogen fueled vehicles before the two key issues of membrane and catalyst have been solved." At the first "Sanlitun Salon" held by BAIC BJEV recently, Professor Chen Quanshi, the director and d