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电化学(中英文) ›› 2019, Vol. 25 ›› Issue (5): 553-561.  doi: 10.13208/j.electrochem.181141

• 研究论文 • 上一篇    下一篇

经由[Ni(en)3](SeO3)配合物电镀制备的硒化镍高效电催化水分解反应

陈丹丹1,高学庆1,刘红飞1,张 伟1*,曹 睿1,2*   

  1. 1. 应用表面与胶体化学教育部重点实验室,陕西师范大学化学化工学院,陕西 西安 710119; 2. 中国人民大学化学系,北京 100872
  • 收稿日期:2019-05-07 修回日期:2019-09-29 出版日期:2019-10-28 发布日期:2019-10-28
  • 通讯作者: 张 伟,曹 睿 E-mail:zw@snnu.edu.cn; ruicao@ruc.edu.cn

Nickel Selenide Derived from [Ni(en)3](SeO3) Complex for Efficient Electrocatalytic Overall Water Splitting

CHEN Dan-dan1, GAO Xue-qing1, LIU Hong-fei1, ZHANG Wei1*, CAO Rui1,2*   

  1. 1. Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China; 2. Department of Chemistry, Renmin University of China, Beijing 100872, China
  • Received:2019-05-07 Revised:2019-09-29 Published:2019-10-28 Online:2019-10-28
  • Contact: ZHANG Wei, CAO Rui E-mail:zw@snnu.edu.cn; ruicao@ruc.edu.cn
  • Supported by:
    We are grateful for the Starting Research Funds of Shaanxi Normal University, the National Natural Science Foundation of China (Grant Nos. 21503126, 21573139, 21773146 and 21872092).

摘要: 电催化水分解是一种高效制备清洁氢气能源的有效方法. 开发高效、稳定、廉价、双功能的电催化剂用于水的氧化与还原反应一直以来都是具有挑战的课题. 在这篇论文中,作者报道了一种生长在碳布上高活性的硒化镍微球. 该催化剂通过对同时包含镍和硒元素的亚硒酸镍配合物进行电解制备. 由于前驱分子同时含有两种有效元素,制备得到的硒化镍具有很好的形貌和元素分步均一性. 制备得到的NiSe-EA/CC电极能够双功能催化水的氧化与还原. 在154 mV析氢过电势下能达到10 mA·cm-2的催化电流. 同时,在250 mV析氧过电势下能达到20 mA·cm-2电催化电流. 用该电极材料同时作为阴极和阳极制备的全电解水电解池能在1.53 V的电压下实现10 mA·cm-2的稳定电解电流.

关键词: 电催化, 硒化镍, 水分解, 析氢反应, 析氧反应

Abstract: Electrocatalytic water splitting is considered as a promising technology for renewable energy. The development of efficient, stable, cost-effective, and bifunctional catalysts for both water reduction and oxidation has continued to face significant challenges. Herein, we report a robust and highly active nickel selenide (NiSe) spheres grown on carbon cloth (CC) by electrodeposition from a nickel selenite complex which is a single source containing both Ni and Se. A combination of two chemicals containing, separately, Ni and Se is used in traditional preparations of metal selenides, causing possible problems in the uniformity of the products. The as-prepared NiSe-EA/CC electrode exhibited electrocatalytic activities toward both water reduction and oxidation, with overpotentials of 154 mV at 10 mA·cm-2 and 250 mV at 20 mA·cm-2, respectively. A water electrolysis cell could realize a current density of 10 mA·cm-2 at a cell voltage of 1.53 V with excellent stability, when using NiSe-EA/CC electrode as both the anode and the cathode.

Key words: electrocatalysis, nickel selenide, water splitting, hydrogen evolution reaction, oxygen evolution reaction

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