Lithium-ion battery breakthroughs seem to pop up on a daily basis. Universities, engineering firms, battery makers and automotive companies constantly promote their research studies, which promise to advance li-ion technology to the next level.
Well, another day is here, so it's time to present one more potential breakthrough. Researchers at the State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering at Zhejiang University in China synthesized a copper oxide- (CuO) graphene compound for use as an anode material in li-ion batteries. The research team believes that CuO nanoparticles, placed on graphene sheets, act as spacers and allows for faster electron transfer between the battery's active materials and its charge collector.

The team of researchers' conclude that the CuO-graphene anode material displays these key properties:
The CuO-graphene composite shows an improved initial coulombic efficiency (68.7%) and reversible capacity of 583.5 mAh g-1 with 75.5% retention of the reversible capacity after 50 cycles.
Transforming the numbers into understandable terms results in this: The experimental anode material may offer slightly higher energy density than other available technologies, but CuO-graphene's main advantage over the competition appears to be its ability to handle increased cycles and recharge at a faster rate. A detailed report on the properties of CuO-graphene, presented by the Zhejian University researcher team, can be read by clicking here (PDF).

[Source: Green Car Congress]

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