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材料导报  2021, Vol. 35 Issue (24): 24026-24031    https://doi.org/10.11896/cldb.20080004
  无机非金属及其复合材料 |
钴铁双金属氢氧化物纳米片的制备及其在高电流下的电催化全解水性能
穆伟娜1, 王力霞1,2, 王琼1,2, 蔡艳荣1,2, 常春1,2, 包德才1
1 渤海大学化学与材料工程学院,锦州 121013
2 渤海大学海洋研究院,锦州 121013
Preparation of Cobalt Iron Bi-metallic Hydroxide Nano-sheet and Its Performance of Overall Water Splitting at High Current Densities
MU Weina1, WANG Lixia1,2, WANG Qiong1,2, CAI Yanrong1,2, CHANG Chun1,2, BAO Decai1
1 College of Chemistry and Materials Engineering, Bohai University, Jinzhou 121013, China
2 Institute of Ocean Research, Bohai University, Jinzhou 121013, China
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摘要 采用一步水热法,通过在高传导泡沫镍(Nickel foam, NF)表面原位生长制备的钴铁双金属氢氧化物纳米片,被证明是一种在高电流下具有良好稳定性的高效双功能全解水电催化剂。在1 mol/L KOH电解液中,当电流密度为100 mA/cm2、200 mA/cm2、250 mA/cm2时,其析氧过电位分别为216 mV、269 mV和284 mV,塔菲尔斜率仅为49.79 mV/dec;当电流密度为10 mA/cm2、50 mA/cm2、100 mA/cm2和200 mA/cm2时,其析氢过电位分别为137 mV、221 mV、256 mV和297 mV,塔菲尔斜率为113.15 mV/dec。全水解只需要一个超低的电压(1.532 V),就可以获得200 mA/cm2的电流。在200 mA/cm2运行20 h后,电流密度仅下降8.86%;维持200 mA/cm2运行20 h,电压仅上浮2.12%。可见,所制备的钴铁双金属氢氧化物纳米片具有高效、稳定的电催化性能。
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穆伟娜
王力霞
王琼
蔡艳荣
常春
包德才
关键词:  钴铁双金属氢氧化物  纳米结构  高电流  催化剂  再生能源    
Abstract: Cobalt iron bi-metallic hydroxide nano-sheet is prepared in-situ on nickel foam (NF) through one step hydrothermal method. It is demonstrated to be a highly efficient bifunctional electrocatalyst for overall water splitting with good stability at high current densities. The synthetic electrocatalyst achieves low overpotential of 216 mV,269 mV and 284 mV at current density of 100 mA/cm2,200 mA/cm2,250 mA/cm2 for oxygen evolution reaction (OER) and a small Tafel slope of 49.79 mV/dec, and also achieves low overpotential of 137 mV,221 mV,256 mV and 297 mV at current density of 10 mA/cm2,50 mA/cm2,100 mA/cm2 and 200 mA/cm2 for hydrogen evolution reaction (HER) and a Tafel slope of 113.15 mV/dec, respectively, in 1 mol/L KOH. For the overall water splitting, it requires only a low cell voltage (1.532 V) to reach the current density of 200 mA/cm2. The electrocatalyst is exhibited only a minor chronoamperometric decay of 8.86% and only a chronopotentiometric sligh-tly rise of 2.12% at 200 mA/cm2 after 20 h. Therefore, the prepared cobalt iron bi-metallic hydroxide nano-sheet has efficient and stable electrocatalytic performance.
Key words:  cobalt iron bi-metallic hydroxide    nanostructure    high current densities    catalyst    renewable energy
出版日期:  2021-12-25      发布日期:  2021-12-27
ZTFLH:  O614.81  
基金资助: 辽宁省“兴辽英才计划”项目(XLYC1907173);国家自然科学基金(51508026);辽宁省自然科学基金(20180550030);辽宁省教育厅科学技术一般项目(LQ2019003;LQ2020014;LJ2020014);渤海大学海洋研究院开放基金(BDHYYJY2020014)
通讯作者:  changchun@bhu.edu.cn; baodecai@bhu.edu.cn   
作者简介:  穆伟娜,2006年7月毕业于辽宁工业大学,获得工学学士学位。目前在渤海大学化学与材料工程学院物理化学专业攻读硕士研究生,主要从事电催化分解水方面的研究。常春,渤海大学副教授,硕士研究生导师,2013年12月毕业于南开大学,毕业后到渤海大学化学与材料工程学院工作。研究工作主要包括光电催化在环境与能源的应用,生物质废弃物处理处置与资源化利用,在国内外学术期刊发表论文30余篇。包德才,博士,渤海大学教授,硕士研究生导师。1998—1999年,获“国家留学基金”资助,以访问学者身份,公派赴日本国东京农工大学进行合作研究。主要从事缓控释载体材料及高分子微胶囊膜负载金属催化剂的研究工作。在国内外学术期刊发表论文30余篇。
引用本文:    
穆伟娜, 王力霞, 王琼, 蔡艳荣, 常春, 包德才. 钴铁双金属氢氧化物纳米片的制备及其在高电流下的电催化全解水性能[J]. 材料导报, 2021, 35(24): 24026-24031.
MU Weina, WANG Lixia, WANG Qiong, CAI Yanrong, CHANG Chun, BAO Decai. Preparation of Cobalt Iron Bi-metallic Hydroxide Nano-sheet and Its Performance of Overall Water Splitting at High Current Densities. Materials Reports, 2021, 35(24): 24026-24031.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.20080004  或          http://www.mater-rep.com/CN/Y2021/V35/I24/24026
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