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粉末冶金材料科学与工程  2022, Vol. 27 Issue (6): 610-619    DOI: 10.19976/j.cnki.43-1448/TF.2022035
  工艺技术 本期目录 | 过刊浏览 | 高级检索 |
泡沫镍基Ni-P-W-Mo析氢电极的制备与电化学性能
代晓梅, 何捍卫
中南大学 粉末冶金研究院,长沙 410083
Preparation and electrochemical properties of Ni-P-W-Mo hydrogen evolution electrode based on nickel foam
DAI Xiaomei, HE Hanwei
Powder Metallurgy Research Institute, Central South University, Changsha 410083, China
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摘要 以硫酸镍、次亚磷酸钠、钨酸钠、钼酸钠等为原料,采用一步恒电流电沉积法在泡沫镍基底上合成Ni-P-W-Mo析氢电极,借助X射线衍射、扫描电镜、能谱仪、X射线光电子能谱以及电化学测试等手段研究材料的表面形貌、元素组成以及电化学析氢性能。结果表明,Ni-P-W-Mo析氢电极在碱性溶液中析氢催化时有出色的催化活性和稳定性,仅需92 mV的过电位即可达到10 mA/cm2的电流密度,比Ni-P电极降低67 mV,电极的双层电容为42.98 mF/cm2,经过2 000次循环伏安(cyclic voltammetry, CV)测试后,析氢活性略微下降。Ni-P-W-Mo电极优异的催化性能可能是由于W、Mo的添加使电极的表面形貌更粗糙,电化学活性表面积和活性位点显著增加,同时自支撑电极结构可以有效降低界面传输电阻,提高电荷传输效率。
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代晓梅
何捍卫
关键词 过渡金属磷化物Ni-P-W-Mo电催化剂电沉积析氢反应泡沫镍    
Abstract:Nickel sulfate, sodium hypophosphite, sodium tungstate, and sodium molybdate were used as raw materials to synthesize Ni-P-W-Mo hydrogen evolution electrode on nickel foam by one-step galvanostatic electrodeposition method. The surface morphology, elemental composition, and electrochemical hydrogen evolution properties of the materials were investigated by means of X-ray diffraction, SEM, Energy X-ray spectrometry, X-ray photoelectron spectroscopy and electrochemical testing. The results show that Ni-P-W-Mo electrode has excellent catalytic activity and stability after catalyzed hydrogen evolution in alkaline solution. The current density of 10 mA/cm2 can be reached only at 92 mV over potential, which is 67 mV lower than that of Ni-P electrode. The double-layer capacitance of Ni-P-W-Mo electrode is 42.98 mF/cm2. After 2000 cyclic voltammetry cycles, the hydrogen evolution activity of the electrode decreases only slightly. The excellent catalytic performance of Ni-P-W-Mo electrode may be due to the addition of W and Mo elements to the Ni-P electrode which makes the electrode surface coarser, greatly increasing the electrochemical active surface area and active site of the electrode. Meanwhile, the self-supported electrode structure can effectively reduce the interfacial transmission resistance and improve the charge transmission efficiency.
Key wordstransition metal phosphide    Ni-P-W-Mo electrocatalyst    electrodeposition    hydrogen evolution reaction    nickel foam
收稿日期: 2022-03-30      出版日期: 2023-01-27
ZTFLH:  TK91  
通讯作者: 何捍卫,教授,博士。电话:13874989693;E-mail: hehanwei@163.com   
引用本文:   
代晓梅, 何捍卫. 泡沫镍基Ni-P-W-Mo析氢电极的制备与电化学性能[J]. 粉末冶金材料科学与工程, 2022, 27(6): 610-619.
DAI Xiaomei, HE Hanwei. Preparation and electrochemical properties of Ni-P-W-Mo hydrogen evolution electrode based on nickel foam. Materials Science and Engineering of Powder Metallurgy, 2022, 27(6): 610-619.
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http://pmbjb.csu.edu.cn/CN/10.19976/j.cnki.43-1448/TF.2022035     或     http://pmbjb.csu.edu.cn/CN/Y2022/V27/I6/610
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