高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (5): 1041.doi: 10.7503/cjcu20170529

• 物理化学 • 上一篇    下一篇

A4纸-8B铅笔-NiAg电极的制备及对H2O2电还原反应的催化性能

蔡庄, 王贵领, 宋聪颖, 杨雪莹, 胡蓉, 叶克, 朱凯, 程魁, 闫俊, 曹殿学   

  1. 哈尔滨工程大学材料科学与化学工程学院, 哈尔滨 150001
  • 收稿日期:2017-08-03 出版日期:2018-04-22 发布日期:2018-04-22
  • 作者简介:

    联系人简介: 王贵领, 男, 博士, 教授, 主要从事燃料电池、 超级电容器和锂离子电池等方面的研究. E-mail: wangguiling@hrbeu.edu.cn

  • 基金资助:
    中央高校基本科研业务费学生科技创新计划项目资助.

Preparation of a Binder Free Electrode of NiAg Supported on Graphite Modified A4 Paper and Its Electrochemical Performance for H2O2 Reduction

CAI Zhuang, WANG Guiling*, SONG Congying, YANG Xueying, HU Rong, YE Ke, ZHU Kai, CHENG Kui, YAN Jun, CAO Dianxue   

  1. College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
  • Received:2017-08-03 Online:2018-04-22 Published:2018-04-22
  • Contact: WANG Guiling

摘要:

通过电化学沉积和化学置换两种方法制备了一种新颖的、 无黏合剂的石墨修饰A4纸负载镍银电极(NiAg@C/A), 利用X射线衍射分析(XRD)、 扫描电子显微镜(SEM)和透射电子显微镜(TEM)等方法对电极的微观形貌和相组成进行了表征. 通过循环伏安法(CV)和计时电流法(CA)对电极对H2O2电还原的催化性能进行了测试. 结果表明, 在测试的浓度范围内, 当NaOH浓度为1 mol/L, H2O2浓度为0.6 mol/L时, NiAg@C/A电极的催化性能最佳; 在工作电压为-0.8 V的条件下, 电极上H2O2还原反应的电流密度可达600 mA/cm2, 表现出良好的催化活性和稳定性.

关键词: 镍银, A4纸, 石墨, 过氧化氢, 电还原

Abstract:

An original electrode of NiAg supported on graphite modified A4 paper(NiAg@C/A) was prepared through electrodeposition and galvanic displacement without binder for H2O2 electroreduction. The morphology and phase composition of the as-prepared electrode were investigated by X-ray diffractometer(XRD), scanning electron microscope(SEM) and transmission electron microscope(TEM). And cyclic voltammetry and chronoamperometry were conducted to study the electrochemical performance of the NiAg@C/A electrode. The results reveal that the reduction current density of H2O2 on the NiAg@C/A electrode reaches 600 mA/cm in a solution of 0.6 mol/L H2O2 and 1 mol/L NaOH at -0.8 V. The NiAg@C/A electrode exhibits good stability toward the H2O2 reduction and is a good alternative for H2O2 electroreduction in the future.

Key words: NiAg, A4 Paper, Graphite, H2O2, Electroreduction

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