期刊
ACS APPLIED ENERGY MATERIALS
卷 1, 期 4, 页码 1594-1602出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.8b00002
关键词
lithium-sulfur battery; ethanol-transfer-adsorption method; freestanding cathode; tree-bark-like structure; high sulfur loading
资金
- National Natural Science Foundation of China [51504234, 51371186]
- Zhejiang Provincial Natural Science Foundation of China [LY16E040001]
- Strategic Priority Research Program of the Chinese Project Academy of Science [XDA09010201]
- Ningbo 3315 International Team of Advanced Energy Storage Materials
- Zhejiang Province Key Science and Technology Innovation Team [2013TD16]
- Natural Science Foundation of Ningbo [2015A610252]
Herein, we designed a simple and energy-saving ethanol-transfer-adsorption method to prepare the activated carbon cloth/sulfur composite (ACC/S). Then, the prepared composite was wrapped in a thin-layered nickel-based hydroxide (NNH) to form a tree-bark-like structure. After irreversibly reacting with lithium to form a barrier layer with both good Li+ permeability and abundant functional polar/hydrophilic groups, this layer could retard the diffusion of lithium polysulfides by both physical confinement and chemisorption. As a result, the freestanding NNH/ACC/S cathode with 4.3 mg cm(-2) sulfur loading displayed a high-areal discharge capacity of 4.3 mA h cm(-2) over 100 cycles at 0.15 C. When cycled at 0.5 C, it still showed a discharge capacity of 650.0 mA h g(-1) over 350 cycles.
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