| Journal Title /掲載ジャーナル名 |
Carbon |
| Publication Year and Month /掲載年月 |
April, 2023 |
| Paper Title /論文タイトル |
Stable and high-capacity SiO negative electrode held in reversibly deformable sponge-like matrix of carbon nanotubes |
| DOI /論文DOI |
10.1016/j.carbon.2023.118014 |
| Author of Waseda University /本学の著者 |
MAE, Tomotaro(3rd Year Doctoral Student, Faculty of Science and Engineering, Graduate School of Advanced Science and Engineering):First Author |
| Related Websites /関連Web |
– |
| Abstract /抄録 |
A lightweight, high-capacity negative electrode was developed by suspending carbon-coated silicon monoxide (SiO/C) particles in a sponge-like matrix of carbon nanotubes (CNTs) without using metal foils or polymeric binders. High initial delithiation capacities per electrode (SiO/C + CNT) of >1200 mA h gelectrode−1 and >1100 mA h cmelectrode−3 were achieved with an optimum SiO/C content of 85 mass%. The lithiation/delithiation cycle with capacity control at a 45% SiO utilization ratio achieved a high delithiation capacity of 584 mA h gelectrode−1 for 236 cycles. In addition, the flexible and electrically conductive CNT sponge matrix enabled reversible expansion/shrinkage of the entire electrode during lithiation/delithiation, as evidenced by scanning electron microscopy. |
