Tsinghua University

Chengjun Xu

Feiyu Kang

Baohua Li

Shan Shi

Yanyi Chen

Hongda Du

This invention discloses a rechargeable nickel ion battery based on the nano-carbon materials. The said nickel ion battery is composed of a nano-carbon material cathode, a nickel anode, an separator, and an electrolyte containing nickel ions. The said nano-carbon materials are fullerene, carbon nanotube, graphene, carbon fiber, carbon foam or the composite of over two different carbon materials, etc. During discharging anodic nickel will be electrochemically dissolved as Niions, which diffuses to the cathodic electrode/electrolyte interface through the electrolyte, and nickel ions are subsequently stored on surface of nano-carbon materials. During charging, above-mentioned process will be reverse. This battery is characterized with high capacity, fast charge and long cycle life due to the high surface area of nano-carbon materials.

Rechargeable nickel ion battery based on nano carbonmaterials

The present disclosure describes a rechargeable zinc ion battery, in which anodic zinc will be electrochemically dissolved as Znions, diffuses to the cathodic electrode/electrolyte interface through the electrolyte, and zinc ions are subsequently intercalated into manganese dioxide during discharging. In charging, above-mentioned process will be reversed. The rechargeable zinc ion battery comprises a cathode formed from a compressed mixture of alpha manganese dioxide particles, electrically conductive particles and one or more binder(s); a zinc anode separated from cathode; an aqueous electrolyte contains zinc ions in which the pH value may be controlled between 4 and 7.

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Guangdong, China

Chengjun Xu