Welcome to Shenzhen Langliyuan Technology Co., Ltd.!
popular searches:

Your current location:Home»NEWS»company news

company news

New materials can be used to make faster rechargeable batteries

source: release time:2019-04-19 Click volume:465


According to the official website of the University of Cambridge on the 26th, the school's researchers wrote in the latest issue of Nature that they have recently determined that tantalum tungsten oxide has a higher lithium pass rate and can be used to develop batteries that can be charged faster.

According to the official website of the University of Cambridge on the 26th, the school's researchers wrote in the latest issue of Nature that they have recently determined that tantalum tungsten oxide has a higher lithium pass rate and can be used to develop batteries that can be charged faster. Moreover, the physical structure and chemical behavior of the oxides help them gain insight into how to build a safe, ultra-fast rechargeable battery.

新材料可用来制造更快充电电池

New materials can be used to make faster rechargeable batteries

battery

The battery is mainly composed of three components: a positive electrode, a negative electrode, and an electrolyte. When the battery is charged, lithium ions flow out of the positive electrode and pass through the crystal structure and electrolyte to the negative electrode where they are stored. The faster this process occurs, the faster the battery will charge.

When looking for new electrode materials, researchers often try to make the particles smaller, but it is difficult to make a practical battery containing nanoparticles: the electrolyte will generate more unnecessary chemical reactions, so the battery life is not long, and Manufacturing costs are also high. The tantalum tungsten oxide used in the latest research has a hard, open-release structure that does not capture the intercalated lithium and that is larger in size than many other electrode materials.

Kent Griffith, a lead researcher at the University of Cambridge's Department of Chemistry, explains: "Many battery materials are based on the same two or three crystal structures, but these tantalum tungsten oxides are fundamentally different. Oxides pass through oxygen' The pillars 'keep open, allowing lithium ions to pass through them in three dimensions, which means more lithium ions can pass through them and at a faster rate. The measurement also shows that the speed at which lithium ions pass through the oxide is better than The electrode material is several orders of magnitude higher."

In addition to high lithium mobility, tantalum tungsten oxide is also easy to manufacture. Griffiths said: "Many nanoparticle structures require multiple steps to synthesize, but these oxides are easy to manufacture and do not require additional chemicals or solvents."

At present, most of the negative electrodes in lithium-ion batteries are made of graphite. Graphite has a high energy density, but when charged at a high rate, it tends to form a slender lithium metal fiber called "dendritic", which causes a short circuit. And the battery caught fire and even exploded.

Griffiths said: "In high-rate applications, safety is more important than any other operating environment. These materials and other similar materials are definitely worthy of attention for fast charging applications that require safer graphite alternatives. ”

MORE>> Recommended Products

LR20

LR14

LR6/G

R20P

R14P

LR03/G

R6P

6LR61

LR6/P

R03

LR03/P

6F22

LANGLIYUAN TECHNOLOGY CO., LTD.

Contact:Jason LiLandline:0755-28397748
fax : 0755-28397749 Mobile phone : 13983528645
address:No. 29, Tongfuyu Industrial Zone, Longtian, Pingshan, Shenzhen, China
店铺二维码

Alibaba QR code

浪利源23A金色电池官网二维码

Official website QR code