Atomic Ni-catalyzed cathode and stabilized Li metal anode for high-performance Li–O2 batteries
The Li–O2 battery (LOB) has attracted growing interest, including for its great potential in next-generation energy storage systems due to its extremely high theoretical specific capacity. However, a series of challenges have seriously hindered LOB development, such as sluggish kinetics during the o...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co. Ltd.
2025-01-01
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| Series: | eScience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667141724001034 |
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| Summary: | The Li–O2 battery (LOB) has attracted growing interest, including for its great potential in next-generation energy storage systems due to its extremely high theoretical specific capacity. However, a series of challenges have seriously hindered LOB development, such as sluggish kinetics during the oxygen reduction and oxygen evolution reactions (ORR/OER) at the cathode, the formation of lithium dendrites, and undesirable corrosion at the lithium metal anode. Herein, we propose a strategy based on the ultra-low loading of atomic Ni catalysts to simultaneously boost the ORR/OER at the cathode while stabilizing the Li metal anode. The resultant LOB delivers a superior discharge capacity (> 16,000 mAh g−1), excellent long-term cycling stability (> 200 cycles), and enhanced high rate capability (> 300 cycles @ 500 mA g−1). The working mechanisms of these atomic Ni catalysts are revealed through carefully designed in situ experiments and theoretical calculations. This work provides a novel research paradigm for designing high-performance LOBs that are useable in practical applications. |
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| ISSN: | 2667-1417 |