期刊
ELECTROCHIMICA ACTA
卷 264, 期 -, 页码 12-19出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.01.009
关键词
Direct methanol fuel cells; Supercapacitor; Carbon nanotube; Graphene; Aerogels
资金
- National Natural Science Foundation of China [51404110 21607064, 21506187]
- Education Department Project Fund of Jiangxi Province [GJJ150665]
- Program of 5511 Talents in Scientific and Technological Innovation of Jiangxi Province [20165BCB18014]
- Undergraduate Innovation Training Program [XZG-16-08-14]
Three-dimensional graphene/carbon nanotube (GR-CNTs) aerogels was fabricated by the freeze-drying process, in which polyvinyl alcohol (PVA) was empolyed as an organic binder. The electrochemical energy storage properties of aerogels were investigated using cyclic voltammetry, galvanostatic charge/discharge and electrochemical impedance spectroscopy tests, which indicated that GR-CNTs aerogels electrode possessed high specific capacitances of 375 F/g in 6 M KOH solution with a capacity retention of about 88% and 94.8% after 5000 cycles, respectively. Moreover, The GR-CNTs aerogels was also identified to be a support matrix for the decoration of ultrafine Pt nanoparticles. Noticeably, exceptional electro-catalytic properties including high activity, good antipoisoning capacity, and outstanding durability were achieved for the Pt/GR-CNTs catalyst due to its unique three-dimensional interconnected porous structure and high specific surface area. (c) 2018 Elsevier Ltd. All rights reserved.
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