There is a growing focus on research into silicon-based anode materials within the industry. Silicon is a material that can absorb up to 10 times more lithium ions during the charge/discharge process compared to a conventional anode, such as graphite. As a result, it is expected that silicon will be a commercialized material for many years to come.
Among the silicon-based anode materials, the silicon-carbon composite (Si/C) anode is one of the most promising approaches. It is anticipated that Si/C anodes will outperform other silicon-based materials, such as SiO, in terms of both capacity enhancement and capacity retention. This is driving research and development efforts.
However, because silicon undergoes considerable volume changes during charge and discharge cycles, the Si/C anode material tends to deteriorate over repeated cycles—a challenge that has long persisted.
GMS is the only carbon material that exhibits rubber-like elasticity. By incorporating GMS as the carbon component in Si/C anodes, the volume changes associated with silicon-based materials can be absorbed, thereby preventing the degradation of active materials. This approach enables the development of high-capacity batteries that are resistant to degradation.
