| Layered double hydroxide nanomaterials for bifunctional ORR/OER electro-catalyst |
| Wanli Ye1,2, Tae Woo Kim3, Dae-Hwan Park1 |
1Department of Engineering Chemistry, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
2Department of Applied Chemical Engineering, Jilin Vocational College of Industry and Technology, Jilin 132000, People’s Republic of China
3High Temperature Energy Conversion Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 34129, Republic of Korea |
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Received: July 7, 2022; Revised: July 25, 2022 Accepted: July 30, 2022. Published online: September 6, 2022. |
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| ABSTRACT |
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As climate change continues to intensify global warming, energy security has become a major concern to the international community. Given the high energy density, portability, and environmental friendliness of energy conversion and storage devices such as fuel cells, they are being used as clean and efficient energy sources and widely researched and applied. In a series of nanoscale materials for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) at the electrode of the fuel cells, they are considered to be promising non-precious metal-based electricity catalysts and there has still been a great opportunity for further development and optimization. One of the ceramic nanomaterials, layered double hydroxides (LDHs) have their unique two-dimensional layered structure, LDHs and their nano-hybrids also have high activity, low cost, long life, and are environmentally friendly. This article provides a comprehensive introduction to the structure of LDH, the latest research progress on the ORR activity and the ORR/OER dual function of the electrochemical catalysts with LDH nanomaterials. |
| Key words:
Layered double hydroxides · Nanohybrid · Oxygen reduction reaction · Oxygen evolution reaction · Bifunctional electro-catalyst |
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