Mesoporous Rh nanoparticles as efficient electrocatalysts for hydrogen evolution reaction

Jiyoung Kim, Kenya Kani, Jeonghun Kim, Jeong Seok Yeon, Min Kyu Song, Bo Jiang, Jongbeom Na, Yusuke Yamauchi, Ho Seok Park

Research output: Contribution to journalArticlepeer-review

Abstract

In the face of hydrogen society, considerable efforts to develop highly active and stable electrocatalysts for hydrogen evolution reaction (HER) have been undertaken to realize sustainable hydrogen production using water splitting. A rational design of mesoporous structure is considered as a promising approach for efficient electrochemical reaction. Herein, we demonstrate the mesoporous rhodium nanoparticles (MRNs) synthesized by simple chemical reduction using polymeric micelle template for the high electrocatalytic performance of HER in an acidic media. Due to the large accessible surface area and abundant low-coordinated atoms on the concave pore surface, our MRNs exhibits the lower overpotential of 29.4 mV at a current density of 10 mA/cm2 for HER, compared to 33.8 mV of Rh black. The MRNs also achieves a small Tafel slope of 30.9 mV/dec, enhanced exchange current density and excellent stability in long-term operation. These kinetic and stability properties are attributed to the uniform mesoporous morphology and the robust structure of the MRNs.

Original languageEnglish
Pages (from-to)371-375
Number of pages5
JournalJournal of Industrial and Engineering Chemistry
Volume96
DOIs
Publication statusPublished - 2021 Apr 25

Bibliographical note

Funding Information:
This research was supported by both the Technology Innovation Program (20004958, Development of ultra-high performance supercapacitor and high power module) funded by the Ministry of Trade, Industry and Energy (MOTIE) and Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF- 2017R1A6A3A11031355). This work was performed in part at the Queensland node of the Australian National Fabrication Facility Queensland Node (ANFF-Q), a company established under the National Collaborative Research Infrastructure Strategy to provide nano- and micro-fabrication facilities for Australia's researchers. The authors acknowledge the facilities, and the scientific and technical assistance, of the Australian Microscopy & Microanalysis Research Facility at the Centre for Microscopy and Microanalysis, The University of Queensland.

Funding Information:
This research was supported by both the Technology Innovation Program (20004958, Development of ultra-high performance supercapacitor and high power module) funded by the Ministry of Trade, Industry and Energy (MOTIE) and Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF- 2017R1A6A3A11031355 ). This work was performed in part at the Queensland node of the Australian National Fabrication Facility Queensland Node (ANFF-Q), a company established under the National Collaborative Research Infrastructure Strategy to provide nano- and micro-fabrication facilities for Australia’s researchers. The authors acknowledge the facilities, and the scientific and technical assistance, of the Australian Microscopy & Microanalysis Research Facility at the Centre for Microscopy and Microanalysis, The University of Queensland.

Publisher Copyright:
© 2021 The Korean Society of Industrial and Engineering Chemistry

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

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