V2(PO4)O encapsulated into crumpled nitrogen-doped graphene as a high-performance anode material for sodium-ion batteries
V2(PO4)O encapsulated into crumpled nitrogen-doped graphene as a high-performance anode material for sodium-ion batteries
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V2(PO4)O封装在皱褶氮掺杂石墨烯中作为钠离子电池的高性能负极材料
DOI：
10.1016/j.electacta.2019.03.133
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发表时间：
2019-05
影响因子：
6.6
通讯作者：
Bo Wang
中科院分区：
文献类型：
--
作者：
Bin Xiao;Wen-hai Zhang;Peng-bo Wang;Lin-bo Tang;Chang-sheng An;Zhen-jiang He;Hui Tong;Jun-chao Zheng;Bo Wang
Phosphate-based polyanion-structured materials have attracted considerable attention as anode materials in lithium-/sodium-ion batteries due to their stable crystal structure, affordability, and environmental friendliness. V2(PO4)O was encapsulated into crumpled nitrogen-doped graphene (VPO@N-G) through a facile spray-drying method in which VPO particles were completely encapsulated by N-doped graphene. For the first time, VPO@N-G was explored as an anode material for sodium-ion batteries. The Na+storage behavior of VPO@N-G was systematically investigated at the voltage range of 0.01–3.0 V (versus Na/Na+). Results indicated that the VPO@N-G anode can deliver a highly reversible discharge capacity of 539 mAh g−1at 0.05 A g−1and achieve a highly reversible discharge capacity of 235.9 mAh g−1even at a high current density of 10 A g−1. Thus, VPO@N-G can be applied as a high-rate anode material for sodium-ion batteries.
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