镍钴氧化物作为析氧催化剂应用于碱性固体电解质水电解池
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- 英文论文题名：Nickel/Cobalt Oxide as High Efficient OER Electrocatalyst in Alkaline Polymer Electrolyte Water Electrolyser
- 论文作者：迟军 ; 俞红梅 ; 付丽 ; 贾佳 ; 邵志刚 ; Xueqiang Gao ; Baolian Yi
- 英文论文作者：Jun Chi ; Hongmei Yu ; Li Fu ; Jia Jia ; Xueqiang Gao ; Baolian Yi ; Zhigang Shao ; Dalian Institute of Chemical Physics ; Chinese Academy of Sciences ; University of Chinese Academy of Sciences
- 年：2016
- 作者机构：中科院大连化学物理研究所;中国科学院大学;
- 论文关键词：制氢 ; 碱性固体电解质水电解池 ; 析氧电催化剂 ; 镍钴氧化物
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十九分会：电化学材料
- 语种：中文
- 分类号：O643.36;O646
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十九分会 ; 电化学材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：253k
- 原文格式：D
- 会议级别：全国
摘要
碱性固体电解质水电解池采用阴离子交换膜作为固态电解质,采用非贵金属材料作为电催化剂,与酸性固体电解质水电解技术相比降低了成本。析氧反应作为水电解制氢过程中的速度控制步骤,对整个电解反应的效率起着至关重要的作用。本文采用水热-焙烧方法制备了镍钴均匀掺杂的金属氧化物作为析氧电催化剂。半电池测试中,该催化剂的析氧过电位可降至401 mV@10 mA·cm~(-2)。同时以自制的阴离子交换膜、0.4 mg·cm~(-2) 40 wt.%Pt/C析氢催化剂,2 mg·cm~(-2)的自制镍钴氧化物析氧催化剂组装成单电解池进行稳定性测试,在100 mA cm~(-2)的条件下电解池的电解电压约为～2.03 V,电解池稳定运行约550 h,表现出良好的运行稳定性。
Water electrolysis by alkaline solid polymer electrolyte(APE) water electrolyser is a promising approach for the hydrogen production from water. In this work, Ni/Co oxides were prepared by hydrothermal method, and used as high-efficiency OER electrocatalyst in an APE water electrolyser. The APE water electrolyser assembled with as-prepared Ni/Co oxides and home-made APE showed a nearly constant operating potential, ~2.03 V @100 mA cm~(-2) in 1 wt.% KHCO_3 solution for about 550 h in a durability test, indicating the catalyst with extraordinary stability can meet the long-termdurability requirements of the water electrolyser. This result shows the potential application of Ni/Co oxides in alkaline solid polymer electrolyte electrolyser.
Water electrolysis by alkaline solid polymer electrolyte(APE) water electrolyser is a promising approach for the hydrogen production from water. In this work, Ni/Co oxides were prepared by hydrothermal method, and used as high-efficiency OER electrocatalyst in an APE water electrolyser. The APE water electrolyser assembled with as-prepared Ni/Co oxides and home-made APE showed a nearly constant operating potential, ~2.03 V @100 mA cm~(-2) in 1 wt.% KHCO_3 solution for about 550 h in a durability test, indicating the catalyst with extraordinary stability can meet the long-termdurability requirements of the water electrolyser. This result shows the potential application of Ni/Co oxides in alkaline solid polymer electrolyte electrolyser.
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