China electric institute successfully solve the problem of lithium titanate battery bilge gas

Recently, held by China electric power research institute "sub-micron lithium titanate Energy storage battery Materials synthesis technology research "project acceptance by state grid company. Project by studying the sub-micron lithium titanate material synthesis and doping modification technology, solved Lithium titanate battery The bilge gas.

As the most application prospect of energy storage batteries ,Lithium ion batteries In the large-scale energy storage market potential is tremendous. As technology advances and manufacturing costs down, titanate The lithium battery Will become the mainstream of the large-scale energy storage applications of lithium ion battery system. But lithium titanate material on the surface of the titanium ion catalytic decomposition of the electrolyte gas generating lithium titanate battery bilge gas, bloating rate at about 25%, and the battery bilge gas leads to shorten battery life, and affects the application security. To achieve large-scale application of lithium titanate battery, it is necessary to solve the key problem.

Electricity from lithium titanate material research institute of China, with submicron lithium titanate material as the research object, USES the element doping technology of lithium titanate material modification, reduce its surface catalytic activity, inhibition of bilge gas side effects occur, so as to achieve the purpose of inhibiting cell bilge gas.

Project submicron lithium titanate materials of different synthesis technology research and development of submicron lithium titanate material raw material pretreatment of solid phase synthesis and electrostatic spinning of synthetic method, studied the sub-micron lithium titanate material modification technology, developed a sub-micron lithium titanate doping modification and surface coating technology, solved due to the lithium titanate material surface tetravalent titanium ion catalytic activity caused by titanate bilge gas lithium-ion batteries.

Project development based on the modified 15 ampere hour of submicron lithium titanate material lithium titanate battery by authoritative forecasts, the battery life can reach 15418 times; In 55 degrees Celsius, 30 ampere charge and discharge electricity flow loop 1000 times, the bilge gas rate is only 11.2%, improved the security of the battery, driven by state grid corporation of energy storage technology industrialization and practical application.

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