Silica direct evaporation: a size-controlled approach to SiC/carbon nanosheet composites as Pt catalyst supports for superior methanol electrooxidation
Wang, L; Zhao, L; Yu, P; Tian, CG; Sun, FF; Feng, H; Zhou, W; Wang, JQ; Fu, HG; Fu, HG (reprint author), Heilongjiang Univ, Minist Educ Peoples Republ China, Key Lab Funct Inorgan Mat Chem, Harbin 150080, Peoples R China.
2015
发表期刊JOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
卷号3期号:47页码:24139—24147
文章类型期刊文献
摘要Carbides have been regarded as a kind of promising support to improve the utilization of Pt as the anode catalyst in fuel cells owing to their Pt-like properties. Unlike other carbides, relevant studies about SiC are scarce because the effective synthesis is challenging from a small size of SiC and high performance in electrochemistry. Herein, we develop a novel and facile vapor deposition strategy to synthesize nanocomposites composed of 17 nm SiC nanoparticles uniformly dispersed on graphitic carbon nanosheets (denoted as SiC/GC) derived from silica ceramic chips and coconut shell-Fe3+ (CS-Fe3+). In the synthesis, the CS-Fe3+ was first transformed to GC, and then the silica vapor from ceramic chips could deposit on GC, meanwhile, the reduction of silica to SiC would occur and the SiC/GC composite was obtained. Because of the synergistic effect and unique structures, the as-prepared Pt-SiC/GC with a low loading of 10 wt% Pt exhibits a superior activity of 1585.3 A g(-1) Pt towards methanol electrooxidation, which is about 6.2 and 5.0 times that of the commercial 20 wt% Pt/C(JM) and 30 wt% PtRu/C(JM) catalysts, respectively, combined with larger ECSA, better stability and superior CO stripping.
关键词Oxygen Reduction Reaction Electrocatalytic Activity Fuel-cells Bimetallic Nanodendrites Tungsten Carbide Nanoparticles Graphene Shell Nanocrystals Behavior
语种英语
WOS记录号WOS:000365205000058
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/25039
专题中科院上海应用物理研究所2011-2018年
通讯作者Fu, HG (reprint author), Heilongjiang Univ, Minist Educ Peoples Republ China, Key Lab Funct Inorgan Mat Chem, Harbin 150080, Peoples R China.
推荐引用方式
GB/T 7714
Wang, L,Zhao, L,Yu, P,et al. Silica direct evaporation: a size-controlled approach to SiC/carbon nanosheet composites as Pt catalyst supports for superior methanol electrooxidation[J]. JOURNAL OF MATERIALS CHEMISTRY A,2015,3(47):24139—24147.
APA Wang, L.,Zhao, L.,Yu, P.,Tian, CG.,Sun, FF.,...&Fu, HG .(2015).Silica direct evaporation: a size-controlled approach to SiC/carbon nanosheet composites as Pt catalyst supports for superior methanol electrooxidation.JOURNAL OF MATERIALS CHEMISTRY A,3(47),24139—24147.
MLA Wang, L,et al."Silica direct evaporation: a size-controlled approach to SiC/carbon nanosheet composites as Pt catalyst supports for superior methanol electrooxidation".JOURNAL OF MATERIALS CHEMISTRY A 3.47(2015):24139—24147.
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