Scientists in South Korea have developed a method for producing carbon-based hybrid cellular nanosheets that exhibit strong electrochemical performance for key aspects of high performance lithium-ion battery anodes.
The team, at the Centre for Nanoparticle Research at the Institute for Basic Science (IBS) in Seoul, experimented by loading carbon cellular nanosheets with tin dioxide nanoparticles via vapour deposition.
Using this as a base, they found the resulting anode material showed a specific capacity of 914 mAh g-1 on average, with a retention of 97% during 300 cycles.
In contrast, the commercialised material graphite shows a capacity of just 372 mAh/g-1.
When the experiments were performed on the tin dioxide, the hybrid materials significantly outperformed the carbon cellular nanosheets, said the team.
“Because many different kinds of materials can be immobilized in the carbon cellular nanosheets, the resulting hybrid cellular nanosheets can be applied to various areas including electrochemical devices and catalysis,” said the team in its Hybrid Cellular Nanosheets for High-Performance Lithium-Ion Battery Anodes report.
“There has been increasing interest in the development of new multicomponent nanomaterials that can overcome a number of intrinsic limitations of single-component electrode materials for lithium-ion batteries.”
The results were published in the Journal of the American Chemical Society (JACS).
