New type multifunction porous aerogels for supercapacitors and absorbents based on cellulose nanofibers and graphene
New type multifunction porous aerogels for supercapacitors and absorbents based on cellulose nanofibers and graphene
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基于纤维素纳米纤维和石墨烯的新型多功能多孔气凝胶，用于超级电容器和吸收剂
DOI：
10.1016/j.matlet.2017.04.141
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发表时间：
2017-12
影响因子：
3
通讯作者：
Zhuang Chen
中科院分区：
文献类型：
--
作者：
Yimei Zhang;Fei Wang;D;an Zhang;Jie Chen;Hao Zhu;Lincheng Zhou;Zhuang Chen
本文报道了一种简便、环保的新型多功能纤维素纳米纤维--石墨烯气凝胶(CGA)的合成方法。然后，我们探索了它作为超级电容器、电极和吸收剂在能源和环境方面的应用。结果表明，所制备的气凝胶具有高度的孔洞和相互连接的三维纳米结构，能够有效地迁移电解质离子和电子，从而显示出优异的电化学性能。在扫描速度为5 mV/S时，比电容可达300F/g，对双酚A有良好的吸附性能，可达481.1 mg/g，良好的电化学性能和吸附性能表明该材料是一种高性能的超级电容器和吸附剂材料。
In this paper, we reported a facile and eco-friendly approach for the synthesis of new type multifunction cellulose nanofibers-graphene aerogel (CGA) by hydrothermal processing, freeze-drying and carbonization. Then we explored its energy and environmental applications as supercapacitors electrode and absorbents. The results showed that the prepared CGA possessed highly porous and interconnected three-dimensional nanostructure provided efficient migration of electrolyte ions and electrons, and thus the aerogels exhibited superb electrochemical performance. The specific capacitances can reached 300 F/g at scan rate of 5 mV/s. In addition, the CGA showed excellent adsorption capacity for bisphenol A, which reached 481.1 mg/g. The excellent electrochemical performance and adsorption capacities showed the CGA to be a high-performance and promising material for supercapacitors and adsorbents.
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