Shape-Memory and Anisotropic Carbon Aerogel from Biomass and Graphene Oxide |
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Authors: | Zilu Lin Wenzhao Jiang Zehong Chen Linxin Zhong Chuanfu Liu |
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Institution: | State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China; (Z.L.); (W.J.); (Z.C.) |
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Abstract: | Biomass, as the most abundant and sustainable resource on the earth, has been regarded as an ideal carbon source to prepare various carbon materials. However, manufacturing shape-memory carbon aerogels with excellent compressibility and elasticity from biomass remains an open challenge. Herein, a cellulose-derived carbon aerogel with an anisotropic architecture is fabricated with the assistance of graphene oxide (GO) through a directional freeze-drying process and carbonization. The carbon aerogel displays excellent shape-memory performances, with high stress and height retentions of 93.6% and 95.5% after 1000 compression cycles, respectively. Moreover, the carbon aerogel can identify large ranges of compression strain (10–80%), and demonstrates excellent current stability during cyclic compression. The carbon aerogel can precisely capture a variety of biological signals in the human body, and thus can be used in wearable electronic devices. |
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Keywords: | biomass bioresource carboxymethyl cellulose aerogel carbon |
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