期刊
CARBON
卷 122, 期 -, 页码 547-555出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2017.07.004
关键词
-
资金
- National Natural Science Foundation of China [21673131]
- Taishan Scholar Project of Shandong Province [ts201511004]
- Natural Science Foundation of Shandong Province [ZR2016BM03]
- Beijing National Laboratory for Molecular Science
As one of the most abundant natural aromatic polymers with plentiful oxygen-containing groups in molecular backbones, commercial lignin can be regarded as a sustainable precursor to develop porous carbonaceous frameworks for the encapsulation of elemental selenium. In this paper, an initial combined carbonization/activation of commercial alkaline lignin and subsequent selenium-loading are adopted to fabricate serial composites of lignin-derived porous carbon (LPC) and elemental selenium (i.e., serial Se/LPC composites) for high-performance lithium-selenium (Li-Se) batteries. The high specific surface area, large pore volume and good electron conductivity of each LPC scaffold facilitate the reversible electro-chemical reaction of selenium towards metallic Li, and at 0.5 C a Se/LPC composite electrode exhibits a reversible capacity of 596.4 mAh g(-1) in the 2nd cycle and a capacity retention of 453.1 mAh g(-1) over 300 cycles with an average decay of 0.08% per cycle. The facilely obtained microporous features of LPC scaffold, as well as the high-rate performance of corresponding Se/LPC composites (e.g., 363.2 mAh g(-1), 4 C), indicate that large-scale treatment of the biomass feedstock may find its potential application in renewable green energy sources. (C) 2017 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据