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材料导报  2021, Vol. 35 Issue (14): 14001-14006    https://doi.org/10.11896/cldb.20050113
  无机非金属及其复合材料 |
Fe掺杂NiCo-LDH的制备及OER催化性能
韩斌1, 冯思琛2, 徐俊2,*, 李朋威2,*
1 厦门大学材料学院,厦门 361001
2 厦门大学物理科学与技术学院,厦门 361001
Preparation of Fe-doped NiCo-LDH and Its OER Performance
HAN Bin1, FENG Sichen2, XU Jun2,*, LI Pengwei2,*
1 College of Materials, Xiamen University, Xiamen 361001, China
2 College of Physical Science and Technology, Xiamen University, Xiamen 361001, China
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摘要 层状双金属氢氧化物(LDH)因具有组成和结构易于调变等优势而被广泛用作析氧反应(Oxygen evolution reaction, OER)催化剂。通过溶剂热法合成了由二维纳米片组成的花状结构的NiCo-LDH材料,并利用Fe离子对其进行刻蚀,合成了Fe掺杂的NiCo-LDH。在OER催化性能测试中,与未刻蚀的NiCo-LDH相比,在电流密度为10 mA·cm-2时,Fe掺杂的NiCo-LDH材料的过电位仅为273 mV,塔菲尔斜率为98 mV·dec-1,OER性能显著提升。此外,所合成的Fe掺杂的NiCo-LDH材料还表现出良好的长期稳定性,经过16 h的连续测试,其OER催化活性仍然能保持在80%。Fe离子刻蚀使NiCo-LDH纳米片具有较多的边缘缺陷,能够提供更多的边缘位点作为活性中心;并且Fe离子的引入改变了NiCo-LDH的电子结构,增加了LDH的层间距离,从而有效改善了催化剂的催化活性和动力学性能。
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韩斌
冯思琛
徐俊
李朋威
关键词:  析氧反应  Fe掺杂NiCo-LDH  化学刻蚀    
Abstract: Layered double hydroxide (LDH) is widely used as the oxygen evolution reaction (OER) catalyst because of its easily adjustable composition and structure. The flower-like NiCo-LDH composed of two-dimensional nanosheets was synthesized by the solvothermal method and etched by Fe ions to obtain Fe-doped NiCo-LDH. The OER activities were then evaluated, Fe-doped NiCo-LDH achieves the overpotential of 273 mV at the current density of 10 mA·cm-2, and the Tafel slope was 98 mV·dec-1, leading to improved OER performance. In addition, the Fe-doped NiCo-LDH also showed excellent long-term stability. After 16 h continuous tests, the performance can still maintain 80%. The Fe-doped NiCo-LDH nanosheets have more edge defects and can provide more edge sites as active sites. Moreover, the introduction of Fe ions changed the electronic structure of NiCo-LDH, and increased the spacing between the sheets, thus significantly improving its activity and kinetic properties.
Key words:  oxygen evolution reaction (OER)    Fe-doped NiCo-LDH    chemical etching
               出版日期:  2021-07-25      发布日期:  2021-08-03
ZTFLH:  TB321  
基金资助: 国家自然科学基金(21771154);中央高校基本科研业务费专项基金(20720180019)
通讯作者:  * xujun@xmu.edu.cn;l_pw0708@126.com   
作者简介:  韩斌,2016年本科毕业于中国计量大学材料科学工程专业,获得工学学位,并于2020年毕业于厦门大学材料学院生物医学工程专业,取得硕士学位。主要从事二维纳米材料的制备及其稳定性研究。
徐俊,福建省厦门大学物理科学与技术学院教授。2007年硕士毕业于厦门大学生物医学工程专业,2012年毕业于新加坡南洋理工大学,获得化学与生物化学专业博士学位。主要研究方向为二维材料、锂离子电池电极材料和光电催化电极材料。
李朋威,厦门大学物理科学与技术学院博士。2016年7月本科毕业于华东理工大学新能源材料与器件专业,同年9月进入华东理工大学材料科学与技术学院攻读硕士学位,2019年9月进入厦门大学物理科学与技术学院攻读博士学位。主要研究方向为设计高效稳定的过渡金属基析氧反应催化剂。
引用本文:    
韩斌, 冯思琛, 徐俊, 李朋威. Fe掺杂NiCo-LDH的制备及OER催化性能[J]. 材料导报, 2021, 35(14): 14001-14006.
HAN Bin, FENG Sichen, XU Jun, LI Pengwei. Preparation of Fe-doped NiCo-LDH and Its OER Performance. Materials Reports, 2021, 35(14): 14001-14006.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.20050113  或          http://www.mater-rep.com/CN/Y2021/V35/I14/14001
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