应用化学 ›› 2022, Vol. 39 ›› Issue (8): 1252-1261.DOI: 10.19894/j.issn.1000-0518.210458

• 研究论文 • 上一篇    下一篇

三元镍基硫属化物纳米棒阵列的简单合成及其高效的电催化析氧性能

杜卫民1(), 刘欣1,2, 朱琳1, 付佳敏1, 郭文山1, 杨晓晴1, 双培硕1   

  1. 1.安阳师范学院化学化工学院,安阳 455000
    2.郑州大学化学学院,郑州 450001
  • 收稿日期:2021-09-08 接受日期:2022-02-17 出版日期:2022-08-01 发布日期:2022-08-04
  • 通讯作者: 杜卫民
  • 基金资助:
    国家自然科学基金项目(U1404203);河南省自然科学基金面上基金项目(212300410324);河南省高等学校重点科研项目计划基础研究专项(20ZX007);河南省科技攻关项目(212102210037)

Facile Synthesis and High⁃Efficiency Electrocatalytic Oxygen Evolution Performance of Ternary Nickel⁃Based Chalcogenide Nanorod Arrays

Wei-Min DU1(), Xin LIU1,2, Lin ZHU1, Jia-Min FU1, Wen-Shan GUO1, Xiao-Qing YANG1, Pei-Shuo SHUANG1   

  1. 1.College of Chemistry and Chemical Engineering,Anyang Normal University,Anyang 455000,China
    2.School of Chemistry,Zhengzhou University,Zhengzhou 450001,China
  • Received:2021-09-08 Accepted:2022-02-17 Published:2022-08-01 Online:2022-08-04
  • Contact: Wei-Min DU
  • About author:dwmchem@163.com
  • Supported by:
    the Natural Science Foundation of China(U1404203);the Natural Science Foundation of Henan Province(212300410324);the Basic Research Special of Key Scientific Research Project Plan in the Universities of Henan Province(20ZX007);the Science and Technology Research Project of Henan Province(212102210037)

摘要:

通过一步溶剂热法成功合成了泡沫镍(NF)支撑的三元镍基硫属化物(Ni3(Se x S1-x2)纳米棒阵列。结构表征结果表明,所得三元Ni3(Se x S1-x2纳米棒属于三方物相,在泡沫镍基底上形成了有序的阵列结构。由于其快速的载流子传输效率、丰富的活性位点和多阴离子的协同效应,Ni3(Se0.3S0.72/NF纳米棒阵列具有最佳的电催化性能。在1.0 mol/L的KOH溶液中,电流密度为50 mA/cm2时,过电势仅为344 mV,塔菲尔斜率为40.17 mV/dec,同时具有优异的电化学稳定性。更重要的是,以商用Pt/C为阴极,Ni3(Se0.3S0.72/NF纳米棒阵列为阳极进行全分解水实验,仅需要1.49 V的电池电位即可提供10 mA/cm2的电解电流,表现出良好的电解水效果。该研究为电解水技术领域提供了一种高效的电催化剂,也为电化学能源技术中非贵重电催化剂的合理构建提供了有价值的见解。

关键词: 三元, 硫属化物, 纳米阵列, 电催化析氧, 电解水制氢

Abstract:

Ternary nickel-based chalcogenide (Ni3(Se x S1-x2) nanorod arrays supported by nickel foams(NF) are successfully synthesized by an one-step solvothermal method. Structural characterization results show that the obtained Ni3(Se x S1-x2 nanorods belong to the trigonal phase and form an ordered array structure on nickel foams. Due to the fast carrier transfer efficiency, abundant active sites and the synergistic effect of poly-anions, Ni3(Se0.3S0.72/NF nanorod arrays have the optimal electrocatalytic performance. In 1.0 mol/L KOH solution, Ni3(Se0.3S0.72/NF nanoarrays have the overpotential of only 344 mV at 50 mA/cm2, Tafel slope of 40.17 mV/dec, and excellent electrochemical stability. More importantly, the overall water splitting is carried out with Ni3(Se0.3S0.72/NF nanorod array as the anode and the commercial Pt/C as the cathode. It is found that a battery potential of 1.49 V can provide the electrolysis current of 10 mA/cm2, showing the good electrocatalytic effect. This work provides an efficient electrocatalyst for the field of electrolysis water technology, and also provides valuable insights for the reasonable construction of non-precious electrocatalysts in electrochemical energy technology.

Key words: Ternary, Chalcogenide, Nanoarray, Oxygen evolution reaction, Hydrogen production by electrolysis of water

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