Hierarchical Co2P microspheres assembled from nanorods grown on reduced graphene oxide as anode material for Lithium-ion batteries

Zhang, Chi, Jiao, Guanghua, Kong, Fanjun, Wang, Jian, Tao, Shi, Zhang, Lei, Qian, Bin and Chao, Yimin (2018) Hierarchical Co2P microspheres assembled from nanorods grown on reduced graphene oxide as anode material for Lithium-ion batteries. Applied Surface Science, 459. pp. 665-671. ISSN 0169-4332

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Abstract

Transition metal phosphides (TMPs) have been studied as promising electrodes for energy storage and conversion due to their large theoretical capacities and high activities. Herein, a hierarchically structured Co2P coupling with the reduced graphene oxide (RGO) composite (Co2P/RGO) was synthesized by a simple solid state method for Li storage. The Co2P/RGO hybrid composite exhibits a high reversible capacity of 61 mAh g−1 at 60 mA g−1, good rate capability of 327 mAh g−1 at 3000 mA g−1 and long cycle life (397 mAh g−1 at 500 mA g−1 for after 1000 cycles). The excellent electrochemical performance can be attributed to the synergistic effect of Co2P micro/nano architecture and graphene modulation, which provide more activity sites for Li+-ions and maintain the structural integrity of active material. This work may provide a new path for preparation of other metal phosphides as potential electrode materials for application in energy storage fields.

Item Type: Article
Uncontrolled Keywords: cobalt phosphide,graphene,hierarchical structure,anode,lithium-ion batteries
Faculty \ School: Faculty of Science > School of Computing Sciences
Faculty of Science > School of Chemistry
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Depositing User: LivePure Connector
Date Deposited: 26 Sep 2018 15:30
Last Modified: 24 Jul 2020 23:39
URI: https://ueaeprints.uea.ac.uk/id/eprint/68366
DOI: 10.1016/j.apsusc.2018.08.043

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