Multi-functional graphene/carbon nanotube aerogels for its applications in supercapacitor and direct methanol fuel cell

被引：64
|
作者：
Zhou, Yang [1 ,2 ]
Hu, XianChao [3 ]
Guo, Shengda [1 ]
Yu, Changlin [1 ]
Zhong, Shengwen [2 ]
Liu, Xianbin [2 ]
机构：
[1] Jiangxi Univ Sci & Technol, Engn Res Inst, Ganzhou 341000, Peoples R China
[2] Key Lab Power Batteries & Relat Mat, Ganzhou 341000, Jiangxi Prov, Peoples R China
[3] Zhejiang Univ Technol, Res Ctr Anal & Measurement, Hangzhou 310032, Zhejiang, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2018年 / 264卷
基金：
中国国家自然科学基金;
关键词：
Direct methanol fuel cells; Supercapacitor; Carbon nanotube; Graphene; Aerogels; 3-DIMENSIONAL CRUMPLED GRAPHENE; SOLID-STATE SUPERCAPACITORS; ELECTROCATALYST SUPPORT; HYBRID AEROGELS; FORMIC-ACID; PERFORMANCE; ELECTROOXIDATION; POLYANILINE; OXIDATION; CATALYST;
D O I：
10.1016/j.electacta.2018.01.009
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
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.
引用
收藏
页码：12 / 19
页数：8
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