钒酸锌/多孔石墨烯的制备及储锂性能研究

曲靖师范学院学报 ›› 2021, Vol. 40 ›› Issue (3): 29-36.

钒酸锌/多孔石墨烯的制备及储锂性能研究

陈俊杰

集美大学诚毅学院,福建厦门 361021

收稿日期:2021-04-23 出版日期:2021-05-26 发布日期:2021-07-13
作者简介:陈俊杰,集美大学诚毅学院助理实验师,主要从事锂离子电池性能研究.
基金资助:
集美大学诚毅学院青年科研基金“钒酸锌/多孔石墨烯的制备及储锂性能研究”（CK21009）.

Synthesis and Lithium Storage Properties of Zn₃V₃O₈/Porous Graphene

CHEN Junjie

Chengyi University College,Jimei University, Xiamen Fujian 361021, China

Received:2021-04-23 Published:2021-05-26 Online:2021-07-13

摘要/Abstract

摘要： 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（Zn₃V₃O₈）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（Zn₃V₃O₈/pG）纳米复合材料. 作为一种锂离子电池负极材料,Zn₃V₃O₈/pG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.Zn₃V₃O₈/pG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.

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

Abstract: A simple template method was used to fabricate porous graphene framework (pG), and a pomegranate-like zinc vanadate (Zn₃V₃O₈) nanospheres were coated in the porous graphene nanosheets to form the unique structure of zinc vanadate/porous graphene (Zn₃V₃O₈/pG) nanocomposites. As an anode material for lithium ion batteries (LIBs), the Zn₃V₃O₈/pG show good lithium storage performance and deliver a reversible capacity of 586 mAh g^-1 at 1000 mA g^-1 after 200 cycles. The superior electrochemical performance of Zn₃V₃O₈/pG nanocomposites can be attributed to the unique porous network carbon structure, which provides buffer space for the volume change of Zn₃V₃O₈ nanospheres during charge and discharge cycles, and the synergistic effects between pomegranate-like Zn₃V₃O₈ nanospheres and porous graphene network.

Key words: Zn₃V₃O₈, porous graphene, lithium ion battery, electrochemical performance, nanocomposites

中图分类号:

O469

陈俊杰. 钒酸锌/多孔石墨烯的制备及储锂性能研究[J]. 曲靖师范学院学报, 2021, 40(3): 29-36.

CHEN Junjie. Synthesis and Lithium Storage Properties of Zn₃V₃O₈/Porous Graphene[J]. Journal of Qujing Normal University, 2021, 40(3): 29-36.

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