阳极
材料科学
纳米复合材料
电化学
阴极
钒
X射线光电子能谱
插层(化学)
电池(电)
化学工程
离子
电极
纳米技术
无机化学
冶金
化学
物理化学
功率(物理)
工程类
有机化学
物理
量子力学
作者
Pu Hu,Xiaofang Wang,Jun Ma,Zhonghua Zhang,Jianjiang He,Xiaogang Wang,Siqi Shi,Guanglei Cui,Liquan Chen
出处
期刊:Nano Energy
[Elsevier]
日期:2016-08-01
卷期号:26: 382-391
被引量:71
标识
DOI:10.1016/j.nanoen.2016.05.050
摘要
Anode materials with long cycling life and rate capability have remained a great challenge for sodium-ion batteries. Herein, a vanadium-based orthophosphate, NaV3(PO4)3/C nanocomposite has been investigated as a novel anode material for Na-ion batteries. The electrochemical performance of NaV3(PO4)3/C nanocomposite is evaluated in Na-half cell, which delivers a reversible capacity of 146 mA h g−1 at the charging/discharging rate of 1 C, and remarkable rate capability. EIS, XPS and in-situ XRD are performed to give the insight into interfacial property of electrode and structural evolution of material during cycling. The excellent cycling stability could be attributed to stable interface at higher cutoff voltage and slight change of structure with intercalation/deintercalation of Na+. Moreover, we achieve a Na-ion full battery with long term cycle life based on NaV3(PO4)3/C anode and Na3V2(PO4)3/C cathode, retaining 80% of initial capacity after 1000 cycles at charging/discharging rate of 5 C, suggesting the feasibility of the as-obtained materials applied as a promising candidate for anode of Na-ion batteries.
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