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钒酸锌/多孔石墨烯的制备及储锂性能研究 被引量:1
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作者 陈俊杰 《曲靖师范学院学报》 2021年第3期29-36,共8页
利用一种简易的模板法制成多孔石墨烯框架(pG),将石榴状的钒酸锌(Zn_(3)V_(3)O_(8))纳米球包覆在多孔石墨烯纳米片里,形成独特结构的钒酸锌/多孔石墨烯(Zn_(3)V_(3)O_(8)/p G)纳米复合材料.作为一种锂离子电池负极材料,Zn_(3)V_(3)O_(8)... 利用一种简易的模板法制成多孔石墨烯框架(pG),将石榴状的钒酸锌(Zn_(3)V_(3)O_(8))纳米球包覆在多孔石墨烯纳米片里,形成独特结构的钒酸锌/多孔石墨烯(Zn_(3)V_(3)O_(8)/p G)纳米复合材料.作为一种锂离子电池负极材料,Zn_(3)V_(3)O_(8)/p G表现出良好的储锂性能,在1000 mA g^(-1)的电流密度下经过200次循环后达到586 mAh g^(-1)的可逆容量.Zn_(3)V_(3)O_(8)/p G良好的电化学性能主要归因于其独特的多孔网状碳结构为钒酸锌纳米球在充放电循环过程中的体积变化提供缓冲空间,以及石榴状的钒酸锌纳米球与多孔石墨烯之间形成的良好协同效应. 展开更多
关键词 钒酸锌 多孔石墨烯 锂离子电池 电化学性能 纳米复合材料
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Synthesis and electrochemical properties of Zn_3V_3O_8 as novel anode material 被引量:1
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作者 Yunxia Jin Junjie He +2 位作者 Zaihua Ou Chuanqi Feng Guangxue Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2019年第3期806-808,共3页
Zn_3V_3O_8 two-dimensional micro sheets are successfully synthesized by combination of solvothermal method and heat treatment. The X-ray diffraction(XRD) and field emission scanning electron microscopy(SEM) are used t... Zn_3V_3O_8 two-dimensional micro sheets are successfully synthesized by combination of solvothermal method and heat treatment. The X-ray diffraction(XRD) and field emission scanning electron microscopy(SEM) are used to characterize the structure and morphology of the samples, and the battery testing system is used to investigate its electrochemical performance. The results show that the Zn_3V_3O_8 is successfully obtained using mix solvent(water:ethylene glycol =1:1), and the sample takes on morphology of two-dimensional sheets. The initial discharge capacity for Zn_3V_3O_8 two-dimensional micro sheets is 752.0 mAh/g at 100 mA/g in the voltage range of 0.01-3 V. After heat treatment in a tube furnace at 550 ℃, the sample had the initial discharge capacity as 1152.0 mAh/g and maintained it at 901.4 mAh/g after 100 cycles. The good electrochemical performance for Zn_3V_3O_8 two-dimensional micro sheets make it possible to be used as novel anode for lithium ion battery application. 展开更多
关键词 INORGANIC COMPOUND INORGANIC SYNTHESIS Electronic materials ANODE material zn3v3o8
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