China Development of Lithium Batteries for Incendiary and Explosion

Chinese scientists are expected to develop a new type of lithium battery made of new materials that is flexible, inexpensive and safer, according to research published in the latest issue of the American Chemical Society's Nano Express.

Zhejiang University of Technology material scientist Tao Xinyong

Tao Xinyong, a materials scientist at Zhejiang University of Technology, replaced the traditional liquid electrolyte with a solid electrolyte mixed with magnesium borate. This is an organic-inorganic composite material. Inorganic magnesium borate can improve the Ionic conductivity and mechanical properties of electrolytes. Organic polymers can maintain flexibility and buffer the stress caused by volume changes during charging and discharging. Get a stable electrode interface.

Tao Xinyong told reporters that the reason why polymer solid electrolytes have been difficult to achieve large-scale applications is that the Ionic conductivity of such electrolytes is three orders of magnitude lower than that of liquid electrolytes at room temperature. In the new solid electrolyte material, magnesium borate can interact with lithium anions to accelerate the flow of lithium ions.

Taoxinyong said magnesium borate is also a pollution-free, low-toxicity flame retardant that increases the stability of the fireproof carbon layer. Traditional liquid electrolytes are usually composed of lithium hexafluorophosphate and flammable and explosive ethyl carbonate and dimethyl carbonate. Mobile phones and automobiles that use liquid electrolytes have safety hazards for combustion and explosion.

The researchers say the new materials have greatly improved Ionic conductivity, but are not yet fully operational at room temperature and can not be industrialised immediately and require further research.

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