期刊
CARBOHYDRATE POLYMERS
卷 175, 期 -, 页码 223-230出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2017.07.089
关键词
Chitosan; Cellulose; Carbon cryogel; Zeolite imidazole frameworks; Supercapacitor
资金
- National High Technology Research, Development Program of China (863 Program) [2014AA06A513]
- National Natural Science Foundation of China [51425405, 51608509]
- China Postdoctoral Science Foundation Funded Project [2016M590670]
In order to promote sustainable development, green and renewable clean energy technologies continue to be developed to meet the growing demand for energy, such as supercapacitor, fuel cells and lithium ion battery. It is urgent to develop appropriate nanomaterials for these energy technologies to reduce the volume of the device, improve the efficiency of energy conversion and enlarge the energy storage capacity. Here, chitosan/cellulose carbon cryogel (CCS/CCL) were designed and synthesized. Through the introduction of zeolite imidazole frameworks (ZIFs) into the chitosan/cellulose cryogels, the obtained materials showed a microstructure of ZIF-7 (a kind of ZIFs) coated chitosan/cellulose fibers (CS/CL). After carbonizing, the as-prepared carbonized ZIF-7@cellulose cryogel (NC@CCL, NC is carbonized ZIF-7) and carbonized ZIF-7@chitosan cryogel (NC@CCS) exhibited suitable microspore contents of 34.37% and 30%, respectively, and they both showed an internal resistance lower than 2 Omega. Thereby, NC@CCL and NC@CCS exhibited a high specific capacitance of 150.4 F g(-1) and 173.1 F g(-1), respectively, which were much higher than those of the original materials. This approach offers a facile method for improving the strength and electronic conductivity of carbon cryogel derived from nature polymers, and also efficiently inhibits the agglomeration of cryogel during carbonization in high temperature, which opens a novel avenue for the development of carbon cryogel materials for application in energy conversion systems. (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