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Two-in-one solution using insect wings to produce graphene-graphite films for efficient electrocatalysis

Nano Research 2019年第1期12卷 33-39页

作者： Huaiyu Li Lihan Zhang Long Li Chaowen Wu Yajiao Huo Ying Chen Xijun Liu Xiaoxing Ke Jun Luo Gustaaf Van Tendeloo Center for Electron Microscopy TUT-FEI Joint LabTianjin Key Lab of Advanced Functional Porous MaterialsInstitute for New Energy Materials&Low-Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China Institute of Microstructure and Property of Advanced Materials Beijing University of TechnologyBeijing 100124China EMAT Electron Microscopy for Materials ScienceUniversity of AntwerpGroenenborgerlaan 171B-2020 AntwerpBelgium Nanostructure Research Centre Wuhan University of TechnologyWuhan 430070China

Natural organisms contain rich elements and naturally optimized smart structures,both of which have inspired various innovative concepts and desig ns in human *** particular,several natural organisms have been used as element sources to synthesize low-cost and environmentally friendly electrocatalysts for the oxygen reduction reaction(ORR)in fuel cells and metal-air batteries,which are clean energy ***,to date,no naturally optimized smart structures have been employed in the synthesis of ORR catalysts,including graphene-based ***,we demonstrate a novel strategy to synthesize graphene-graphite films(GGFs)by heating butterfly wings coated with FeCI3 in N2,in which the full power of natural organisms is *** wings work not only as an element source for GGF generation but also as a porous supporting structure for effective nitrogen doping,two-dimensional spreading,and double-face exposure of the *** GGFs exhibit a half-wave potential of 0.942 V and a H2O2 yield of<0.07%for ORR electrocatalysis;these values are comparable to those for the best commercial Pt/C and all previously reported ORR catalysts in alkaline *** two-in-one strategy is also successful with cicada and dragonfly wings,indicating that it is a universal,green,and cost-effective method for developing high-performance graphene-based materials.

关键词： insect wings graphene graphite oxygen reduction reaction electrocatalysts

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