期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 7, 期 3, 页码 3042-3051出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b04648
关键词
biomass; hollow carbon host; nitrogen doping; high sulfur content; lithium sulfur battery
资金
- National Natural Science Foundation of China [51573023, 50972020]
- Natural Science Foundation of Jilin Province [20170101101JC, 20180520011JH]
- Industrial Technology Research and Development Project of Jilin Province Development and Reform Commission [2017C052-4]
- Science and Technology Research Planning Project of the Education Department of Jilin Province [JJKH20181122KJ, JJKH20170608KJ]
- Innovative Foundation of Changchun University of Science and Technology [XJJLG-2017-04]
- Youth Foundation of Changchun University of Science and Technology [XQNJJ-2016-01, XQNJJ-2017-17]
Biomass derivative carbonaceous materials are extremely fascinating for developing advanced energy storage devices according to unique architecture. Here, inspired by dandelion with consecutive hollow channel, nitrogen-doped hollow carbon frame-work (NHCF) as sulfur host was obtained via a simple thermal calcination in ammonia atmosphere for lithium-sulfur battery. The NHCF can effectively confine polysulfides and electrochemical reaction within the hollow channel and expedite lithium ion diffusion and electrode transport through porous nitrogen-doped carbon rampart. With this strategy, a high-level active sulfur loading of 80% and high sulfur utilization can be realized. As a result, the NHCF/S delivered an advanced initial capacity of 950 mAh g(-1) at the rate of 0.5 C with small capacity fading rates of 0.049% per cycle after 500 cycles. Additionally, an average reversible areal capacity of nearly 5 mAh cm(-2) was realized under raised sulfur mass loading of 5.5 mg cm(-2). This superior electrochemical energy storage property endows renewable biomass derived carbon host with promising potential for low-cost rechargeable battery application.
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