Graphene-supported bimetal phosphorus trisulfides as novel 0D-2D nanohybrid for high rate Li-ion storage

• 来源期刊: 能源化学
• 年，卷（期）: 2018,（1）
• 页码范围: 190-194
• 页数: 5页
• 语种: 英文

摘要

Herein,we report on the synthesis and Li-ion storage properties of the 0D-2D nanohybrid consisted of bimetal phosphorus trisulfides nanoneedles (Co0.5Ni0.5PS3) and graphene nanosheets (denoted as Co0.5Ni0.5PS3@G).By choosing the Co0.5Ni0.5(OH)2 nanoneedles as precursor,the Co0.5Ni0.5PS3 derived by a simple solid-state transformation (SST) process was successfully attached onto the graphene surface.The as-prepared nanohybrids showed a superior cycling stability and rate performance for Li-ion storage.After cycling at a current density of 0.5 A g-1 for 500 cycles,the capacity are 456 mA h g-1.Particularly,the capacity can reach 302 mAh g-1 at a current density of 10 A g-1,which is 66.2％ of the capacity at 0.5 A g-1.Even cycling at a current density of 50 A g-1,the nanocomposite can still kept a capacity of 153 mA h g-1 with a capacity retention of 33.6％.