无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2023, Vol. 55 ›› Issue (5): 52-58.doi: 10.19964/j.issn.1006-4990.2022-0398

• 研究与开发 • 上一篇    下一篇

偏钒酸根掺杂的NiCo-LDH电极的制备及性能研究

许雪棠(), 王煦凯, 张申鹤, 黄美香, 农舒柳, 许诺   

  1. 广西大学化学化工学院,广西 南宁 530004
  • 收稿日期:2022-07-01 出版日期:2023-05-10 发布日期:2023-05-15
  • 作者简介:许雪棠(1972— ),女,硕士研究生导师,教授,研究方向为高性能无机材料;E-mail:xxtang@gxu.edu.cn
  • 基金资助:
    国家自然科学基金项目(22065003);广西大学“大学生创新创业训练计划”资助项目(202110593026)

Study on preparation and properties of vanadate doped NiCo-LDH electrode

XU Xuetang(), WANG Xukai, ZHANG Shenhe, HUANG Meixiang, NONG Shuliu, XU Nuo   

  1. School of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004,China
  • Received:2022-07-01 Published:2023-05-10 Online:2023-05-15

摘要:

超级电容器是近年来电化学储能器件研发的热点之一,其电极材料对其性能起决定性作用。为了合成具有优异超电容性能的NiCo基二维层状双氢氧化物(LDH)电极材料,首先通过一步水热法在泡沫镍网表面制备NiCo-LDH纳米阵列;然后在水-乙二醇体系下,通过二次溶剂热反应,制备偏钒酸根掺杂的NiCo-LDH纳米阵列;最后,通过碱转化得到性能优异的电极材料。用此电极与活性碳组装成全固态不对称超级电容器件,在电压为0~1.8 V、功率密度为9 mW/cm2时,器件的能量密度达0.416 mW·h/cm2,且具有良好的循环稳定性。

关键词: 泡沫镍网, NiCo-LDH, 偏钒酸根, 纳米阵列, 超级电容器

Abstract:

Supercapacitor is one of the hot spots in the research and development of chemical energy storage devices in recent years,and electrode materials play a decisive role in its performance.In order to synthesize NiCo based two-dimensional layered double hydroxide(LDH) electrode materials with excellent supercapacitor performance,NiCo-LDH nanoarrays were first prepared on the surface of Ni foam by one-step hydrothermal method.Then,in a water-glycol system,VO3- doped NiCo-LDH nanoarrays were prepared through a secondary solvothermal reaction.Finally,electrode materials with excellent performance were obtained through alkali conversion.Using this electrode and activated carbon to assemble an all solid-state asymmetric supercapacitor device,the device showed an energy density of 0.416 mW·h/cm2 at a voltage of 0 to 1.8 V and a power density of 9 mW/cm2,and it had good cycle stability.

Key words: Ni foam, NiCo-LDH, vanadate, nanoarray, supercapacitor

中图分类号: