Recent Progress in Non-Precious Catalysts for Metal-Air Batteries
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- Recent Progress in Non-Precious Catalysts for Metal-Air Batteries
- Cao, Ruiguo; Lee, Jang-Soo; Liu, Meilin; Cho, Jaephil
- Carbon-based structures; Critical issues; Efficient catalysts; Electrical energy; Electrical vehicles; Electrochemical energy storage devices; Energy density; Energy future; Future perspectives; Macrocycles; Metal nitrides; Metal-air battery; Micro grid; Non-precious catalysts; Operational life; Oxygen evolution reaction; Oxygen reduction reaction; Polarization loss; Progress report; Rate capabilities; Recent progress; Transition-metal oxides
- Issue Date
- WILEY-V C H VERLAG GMBH
- ADVANCED ENERGY MATERIALS, v.2, no.7, pp.816 - 829
- Electrical energy storage and conversion is vital to a clean, sustainable, and secure energy future. Among all electrochemical energy storage devices, metal-air batteries have potential to offer the highest energy density, representing the most promising systems for portable (electronics), mobile (electrical vehicles), and stationary (micro-grids) applications. To date, however, many fundamental issues are yet to be overcome to realize this potential. For example, efficient catalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) at the air-electrode are yet to be developed to significantly reduce the polarization loss in metal-air batteries, which severely hinders the rate capability, energy efficiency, and operational life. In this progress report, a brief overview is first presented of the critical issues relevant to air-electrodes in metal-air batteries. Some recent advancements in the development of non-precious catalysts for ORR in Li-air and Zn-air batteries are then highlighted, including transition metal oxides, low-dimensional carbon-based structures, and other catalysts such as transition-metal macrocycles and metal nitrides. New directions and future perspectives for metal-air batteries are also outlined.
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