期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 8, 页码 2437-2442出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201814324
关键词
carbon nanotubes; lithium dendrites; lithium metal anodes; lithium oxygen batteries
资金
- MOST [2016YFA0203302]
- NSFC [21634003, 51573027, 51673043, 21604012, 21805044, 21875042, 11602058, 11872150]
- STCSM [16JC1400702, 17QA1400400, 18QA1400700, 18QA1400800]
- SEDF [16CG01]
- Yanchang Petroleum Group
- SHMEC [2017-01-07-00-07-E00062]
- EPSRC [EP/M009394/1, EP/L019469/1] Funding Source: UKRI
Although lithium-oxygen batteries possess a high theoretical energy density and are considered as promising candidates for next-generation power systems, the enhancement of safety and cycling efficiency of the lithium anodes while maintaining the high energy storage capability remains difficult. Here, we overcome this challenge by cross-stacking aligned carbon nanotubes into porous networks for ultrahigh-capacity lithium anodes to achieve high-performance lithium-oxygen batteries. The novel anode shows a reversible specific capacity of 3656 mAh g(-1), approaching the theoretical capacity of 3861 mAh g(-1) of pure lithium. When this anode is employed in lithium-oxygen full batteries, the cycling stability is significantly enhanced, owing to the dendrite-free morphology and stabilized solid-electrolyte interface. This work presents a new pathway to high performance lithium-oxygen batteries towards practical applications by designing cross-stacked and aligned structures for one-dimensional conducting nanomaterials.
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