Graphene-supported bimetal phosphorus trisulfide (cas 12165-69-4)s as novel 0D–2D nanohybrid for high rate Li-ion storage

Add time:07/31/2019    Source:sciencedirect.com

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%.

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