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2022 Vol.32, Issue 5
Rational Design of Binder-Free Fe-Doped CuCo(OH)2 Nanosheets for High-Performance Water Oxidation
Komal Patil
,
Su Young Jang
,
Jin Hyeok Kim†
Optoelectronic Convergence Research Center, Department of Materials Science and Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
†Corresponding author E-Mail : jinhyeok@chonnam.ac.kr (J. H. Kim, Chonnam Nat’l Univ.)
May 2022. pp. 237-242
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Abstract

Designing and producing a low-cost, high-current-density electrode with good electrocatalytic activity for the oxygen evolution reaction (OER) is still a major challenge for the industrial hydrogen energy economy. In this study, nanostructured Fe-doped CuCo(OH)2 was discovered to be a precedent electrocatalyst for OER with low overpotential, low Tafel slope, good durability, and high electrochemically active surface sites at reduced mass loadings. Fe-doped CuCo(OH)2 nanosheets are made using a hydrothermal synthesis process. These nanosheets are clumped together to form a highly open hierarchical structure. When used as an electrocatalyst, the Fe-doped CuCo(OH)2 nanosheets required an overpotential of 260 mV to reach a current density of 50 mA cm−2. Also, it showed a small Tafel slope of 72.9 mV dec−1, and superior stability while catalyzing the generation of O2 continuously for 20 hours. The Fe-doped CuCo(OH)2 was found to have a large number of active sites which provide hierarchical and stable transfer routes for both electrolyte ions and electrons, resulting in exceptional OER performance.

Keywords
Fe-doping
CuCo(OH)2
oxygen evolution reaction
nanosheets
electrocatalyst
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Information
  • Publisher :Materials Research Society of Korea
  • Publisher(Ko) :한국재료학회
  • Journal Title :Korean Journal of Materials Research
  • Journal Title(Ko) :한국재료학회지
  • Volume : 32
  • No :5
  • Pages :237-242
  • Received Date : 2022-03-29
  • Revised Date : 2022-03-29
  • Accepted Date : 2022-04-13
  • DOI :https://doi.org/10.3740/MRSK.2022.32.5.237
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