NIMSナノポーラスアモルファスシリコン薄膜負極 -リチウム -イオン電池装置
2022年9月26日
According to foreign media reports, researchers at Japan's National Institute for Materials Science (NIMS) claim that nanoporous, amorphous silicon film anodes exhibit excellent cycle stability and extremely high lithium-ion storage capacity: in After 100 times of charge and discharge, it is 2962mAh/g (2.19mAh/cm2).
The NIMS team combined nanoporous amorphous silicon films with inorganic solid electrolytes to address the problem of capacity fading. The nanoporous structure can accommodate the volume change of silicon, thereby limiting the mechanical fracture and pulverization of the anode.
Unlike liquid electrolytes, solid electrolytes do not decompose because of their wide electrochemical stability window. It has been proved by experiments that the capacity of silicon material is high, and even if it is charged and discharged 100 times, the attenuation of the capacity is also small.(Lithium - Ion Battery Equipment)
The research was supported by financial support from New Energy and Industrial Technology Development Organization (NEDO) and Toyota Motor Corporation.
The NIMS team combined nanoporous amorphous silicon films with inorganic solid electrolytes to address the problem of capacity fading. The nanoporous structure can accommodate the volume change of silicon, thereby limiting the mechanical fracture and pulverization of the anode.
Unlike liquid electrolytes, solid electrolytes do not decompose because of their wide electrochemical stability window. It has been proved by experiments that the capacity of silicon material is high, and even if it is charged and discharged 100 times, the attenuation of the capacity is also small.(Lithium - Ion Battery Equipment)
The research was supported by financial support from New Energy and Industrial Technology Development Organization (NEDO) and Toyota Motor Corporation.
