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材料导报  2024, Vol. 38 Issue (4): 22040365-7    https://doi.org/10.11896/cldb.22040365
  无机非金属及其复合材料 |
MoS2/Ni3S2/NF双功能电催化剂用于高效全水解
贾飞宏, 卫学玲, 包维维, 邹祥宇*
陕西理工大学材料科学与工程学院,陕西 汉中 723000
MoS2/Ni3S2/NF Bifunctional Electrocatalysts for Efficient Overall Water Splitting
JIA Feihong, WEI Xueling, BAO Weiwei, ZOU Xiangyu*
School of Materials Science and Engineering, Shaanxi University of Technology, Hanzhong 723000, Shaanxi, China
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摘要 通过调控水热反应时间,采用一步水热法合成泡沫镍(NF)自支撑的MoS2/Ni3S2/NF异质结构阵列,采用XRD、XPS、SEM和EDS对MoS2/Ni3S2/NF电催化剂进行物相分析和形貌表征,并在1.0 mol·L-1 KOH碱性电解液中对其电催化析氢反应(HER)和析氧反应(OER)性能进行了测试。结果表明,当HER和OER的电流密度升高至100 mA·cm-2时,水热反应4 h后得到最优MoS2/Ni3S2/NF-4复合电极分别具有196 mV和310 mV的低过电位,并分别表现出30 mV·dec-1和89.6 mV·dec-1的低塔菲尔斜率。另外,MoS2/Ni3S2/NF-4异质结构作为双功能电催化剂,电流密度达到10 mA·cm-2时电解槽运行需要1.50 V的低电压,且在碱性条件下具备良好的稳定性,100 h内性能无明显变化,可见MoS2/Ni3S2/NF钟乳石棒状阵列可成为高效全水解的双功能电催化剂。
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贾飞宏
卫学玲
包维维
邹祥宇
关键词:  电催化  双功能电催化剂  析氢反应(HER)  析氧反应(OER)  全水解    
Abstract: By adjusting the hydrothermal reaction time, the nickel foam(NF) self-supporting MoS2/Ni3S2/NF heterostructure array was synthesized by one-step hydrothermal method. The phase analysis and morphology characterization of MoS2/Ni3S2/NF electrocatalysts were analyzed by XRD, XPS, SEM and EDS. The electrocatalytic hydrogen evolution reaction(HER) and oxygen evolution reaction (OER) properties in 1.0 mol·L-1 KOH alkaline electrolyte were tested. The results show that when the current density of HER and OER increases to 100 mA·cm-2, the optimal MoS2/Ni3S2/NF-4 composite electrode obtained after hydrothermal reaction for 4 h has low overpotential of 196 mV and 310 mV respectively, and shows low Tafel slope of 30 mV·dec-1 and 89.6 mV·dec-1, respectively. In addition, MoS2/Ni3S2/NF-4 heterostructure is used as a bifunctional electrocatalyst. When the current density reaches 10 mA·cm-2, the electrolytic cell needs a low voltage of 1.50 V, and has good stability under alkaline conditions. There is no significant change in performance within 100 h. It can be seen that MoS2/Ni3S2/NF stalactite rod array can become a bifunctional electrocatalyst for high-efficiency overall water splitting.
Key words:  electrocatalysis    bifunctional electrocatalyst    hydrogen evolution reaction (HER)    oxygen evolution reaction (OER)    overall water splitting
出版日期:  2024-02-25      发布日期:  2024-03-01
ZTFLH:  O614.81  
基金资助: 国家自然科学基金(51504147);陕西理工大学校级科研基金(SLGQD13(2)-18)
通讯作者:  *邹祥宇,陕西理工大学材料科学与工程学院副教授、硕士研究生导师。2013年东北大学冶金物理化学专业博士毕业。目前主要从事光电催化在环境与能源方面的应用以及光电催化过程中热力学及动力学的研究。在国内外学术期刊发表论文40余篇。86249662@qq.com   
作者简介:  贾飞宏,2021年7月毕业于陕西理工大学,获得工学学士学位,现为陕西理工大学材料科学与工程学院硕士研究生,主要从事新能源材料制备及性能研究。
引用本文:    
贾飞宏, 卫学玲, 包维维, 邹祥宇. MoS2/Ni3S2/NF双功能电催化剂用于高效全水解[J]. 材料导报, 2024, 38(4): 22040365-7.
JIA Feihong, WEI Xueling, BAO Weiwei, ZOU Xiangyu. MoS2/Ni3S2/NF Bifunctional Electrocatalysts for Efficient Overall Water Splitting. Materials Reports, 2024, 38(4): 22040365-7.
链接本文:  
https://www.mater-rep.com/CN/10.11896/cldb.22040365  或          https://www.mater-rep.com/CN/Y2024/V38/I4/22040365
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