کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6471900 | 1424125 | 2017 | 9 صفحه PDF | دانلود رایگان |
- Co2P-Co hollow nanospheres with graphene sheets decoration are prepared through one-pot solution approach.
- Co2P-Co/graphene nanocomposites reveal greatly enhanced lithium storage performances than Co2P-Co counterparts.
- The superb electrochemical performances derive from dual modification of graphene sheets and metal Co as well as their hollow configuration.
The fabrication of Co2P-Co (Co-P composites) hollow nanospheres with graphene sheets decoration through one-pot solution approach is demonstrated and their potential as the anode materials for lithium ion batteries is assessed. A large specific capacity of 929 mA h gâ1 can be retained for Co-P/graphene nanocomposites at 100 mA gâ1 after 200 cycles. When cycled at a large current density of 2.0C, the Co-P/graphene nanocomposites deliver a decent reversible capacity of 567 mA h gâ1, which is much higher than the theoretical capacity of traditional graphite anode (372 mA h gâ1). The obviously enhanced lithium storage properties of Co-P/graphene nanocomposites are put down to the dual modification of graphene sheets and metal Co as well as their hollow structures.
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Journal: Electrochimica Acta - Volume 232, 1 April 2017, Pages 465-473