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A selective electrocatalyst-based direct methanol fuel cell operated at high concentrations of methanol
Feng, Yan1,2; Liu, Hui1,3; Yang, Jun1,2,3
2017-06-01
发表期刊SCIENCE ADVANCES
ISSN2375-2548
卷号3期号:6页码:e1700580
摘要

Owing to the serious crossover of methanol from the anode to the cathode through the polymer electrolyte membrane, direct methanol fuel cells (DMFCs) usually use dilute methanol solutions as fuel. However, the use of high-concentration methanol is highly demanded to improve the energy density of a DMFC system. Instead of the conventional strategies (for example, improving the fuel-feed system, membrane development, modification of electrode, and water management), we demonstrate the use of selective electrocatalysts to run a DMFC at high concentrations of methanol. In particular, at an operating temperature of 80 degrees C, the as-fabricated DMFC with core-shell-shell Au@Ag2S@Pt nanocomposites at the anode and core-shell Au@Pd nanoparticles at the cathode produces a maximum power density of 89.7 mW cm(-2) at a methanol feed concentration of 10 M and maintains good performance at a methanol concentration of up to 15 M. The high selectivity of the electrocatalysts achieved through structural construction accounts for the successful operation of the DMFC at high concentrations of methanol.

文章类型Editorial Material
WOS标题词Science & Technology
DOI10.1126/sciadv.1700580
收录类别SCI
语种英语
关键词[WOS]PROTON-EXCHANGE MEMBRANE ; PASSIVE DIRECT METHANOL ; NEAT METHANOL ; NAFION MEMBRANE ; PERFORMANCE ; LAYER ; NANOPARTICLES ; BARRIER ; DMFCS ; ANODE
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000406370700074
引用统计
被引频次:19[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23148
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Ctr Mesosci, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714
Feng, Yan,Liu, Hui,Yang, Jun. A selective electrocatalyst-based direct methanol fuel cell operated at high concentrations of methanol[J]. SCIENCE ADVANCES,2017,3(6):e1700580.
APA Feng, Yan,Liu, Hui,&Yang, Jun.(2017).A selective electrocatalyst-based direct methanol fuel cell operated at high concentrations of methanol.SCIENCE ADVANCES,3(6),e1700580.
MLA Feng, Yan,et al."A selective electrocatalyst-based direct methanol fuel cell operated at high concentrations of methanol".SCIENCE ADVANCES 3.6(2017):e1700580.
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