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高等学校化学研究 ›› 2025, Vol. 41 ›› Issue (2): 266-272.doi: 10.1007/s40242-025-5010-3

• Articles • 上一篇    下一篇

Unraveling the Durable Water Oxidation Mechanism of Multi-principal Elemental Metal Catalyst

QIAN Fangren1,2,3, WAN Jiaqi2, JIANG Wei3, LI Rongyao3, YI Luocai1,2, CHEN Shuangming3, CHEN Qingjun1,2, SONG Li3   

  1. 1. School of Rare Earths, University of Science and Technology of China, Hefei 230026, P. R. China;
    2. Key Laboratory of Rare Earths, Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, P. R. China;
    3. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
  • 收稿日期:2025-01-15 接受日期:2025-02-15 出版日期:2025-04-01 发布日期:2025-03-31
  • 通讯作者: SONG Li,song2012@ustc.edu.cn;CHEN Qingjun,qjchen@gia.cas.cn E-mail:song2012@ustc.edu.cn;qjchen@gia.cas.cn
  • 基金资助:
    This work was supported by the National Key Research and Development Program of China (No. 2022YFA1504100), the National Natural Science Foundation of China (Nos. 92061125, 12225508, 12322515, 22075264, 22309184), the Strategic Priority Research Program of the Chinese Academy of Sciences (No. XDA0410401), the Youth Innovation Promotion Association of CAS (No. 2022457), the Jiangxi Natural Science Foundation, China (No. 20212ACB213009), and the Fundamental Research Funds for the Central Universities, China (No. WK2060000039). We acknowledge the Shanghai Synchrotron Radiation Facility, China (BL14W1) and the Beijing Synchrotron Radiation Facility, China (1W1B) for the material characterization of synchrotron X-ray absorption spectrum.

Unraveling the Durable Water Oxidation Mechanism of Multi-principal Elemental Metal Catalyst

QIAN Fangren1,2,3, WAN Jiaqi2, JIANG Wei3, LI Rongyao3, YI Luocai1,2, CHEN Shuangming3, CHEN Qingjun1,2, SONG Li3   

  1. 1. School of Rare Earths, University of Science and Technology of China, Hefei 230026, P. R. China;
    2. Key Laboratory of Rare Earths, Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, P. R. China;
    3. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
  • Received:2025-01-15 Accepted:2025-02-15 Online:2025-04-01 Published:2025-03-31
  • Contact: SONG Li,song2012@ustc.edu.cn;CHEN Qingjun,qjchen@gia.cas.cn E-mail:song2012@ustc.edu.cn;qjchen@gia.cas.cn
  • Supported by:
    This work was supported by the National Key Research and Development Program of China (No. 2022YFA1504100), the National Natural Science Foundation of China (Nos. 92061125, 12225508, 12322515, 22075264, 22309184), the Strategic Priority Research Program of the Chinese Academy of Sciences (No. XDA0410401), the Youth Innovation Promotion Association of CAS (No. 2022457), the Jiangxi Natural Science Foundation, China (No. 20212ACB213009), and the Fundamental Research Funds for the Central Universities, China (No. WK2060000039). We acknowledge the Shanghai Synchrotron Radiation Facility, China (BL14W1) and the Beijing Synchrotron Radiation Facility, China (1W1B) for the material characterization of synchrotron X-ray absorption spectrum.

摘要: Nanoscale multi-principal element metal (MPEM) offers a diverse and adjustable compositional range of active, holding promise for applications in water oxidation. Nevertheless, the synthesis of MPEM nanoparticles poses challenges owing to the tendency of particles to experience growth, aggregation, or phase separation during annealing processes. Here, we introduce a rapid heating and cooling method that enables the fabrication of rare earthcontaining MPEM through instantaneous heating and rapid cooling processes. The TEM results indicate that the metal particles are roughly around 120 nm in size, with uniform distribution of various metal elements on the particles. The X-ray characterizations further reveal that the metal catalyst exhibits predominantly a face-centered cubic (FCC) structure with partial oxidation on the surface. Notably, the obtained MPEM catalysts exhibit a current density of 10 mA/cm2 with an overpotential of 244 mV, which is 26 and 104 mV lower than the overpotentials of FeCoNiCr and commercial RuO2. Moreover, the MPEM catalyst can operate stably for over 200 h at current densities of 10 and 100 mA/cm2.

关键词: Joule heating, Multi-principal element particle, Oxygen evolution reaction

Abstract: Nanoscale multi-principal element metal (MPEM) offers a diverse and adjustable compositional range of active, holding promise for applications in water oxidation. Nevertheless, the synthesis of MPEM nanoparticles poses challenges owing to the tendency of particles to experience growth, aggregation, or phase separation during annealing processes. Here, we introduce a rapid heating and cooling method that enables the fabrication of rare earthcontaining MPEM through instantaneous heating and rapid cooling processes. The TEM results indicate that the metal particles are roughly around 120 nm in size, with uniform distribution of various metal elements on the particles. The X-ray characterizations further reveal that the metal catalyst exhibits predominantly a face-centered cubic (FCC) structure with partial oxidation on the surface. Notably, the obtained MPEM catalysts exhibit a current density of 10 mA/cm2 with an overpotential of 244 mV, which is 26 and 104 mV lower than the overpotentials of FeCoNiCr and commercial RuO2. Moreover, the MPEM catalyst can operate stably for over 200 h at current densities of 10 and 100 mA/cm2.

Key words: Joule heating, Multi-principal element particle, Oxygen evolution reaction