Novel cathodal diffusion layer with mesoporous carbon for the passive direct methanol fuel cell

Jianyu Cao, Liangduo Wang, Lingzheng Song, Juan Xu, Hongning Wang, Zhidong Chen, Qinghong Huang, Hui Yang

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

A new cathodal diffusion layer (CDL) that utilizes mesoporous carbons (MCs) is fabricated and evaluated for the passive direct methanol fuel cell (DMFC). Experimental results reveal that the CDL with MCs (MC-CDL) can accelerate oxygen transport and promote the back diffusion of water from cathode to anode, leading to an increasing power density and enhanced discharge stability. The passive DMFC utilizing such an MC-CDL yields a specific energy of ca. 946 Wh kg-1 at 25 C, which is 2.3 times higher than that of the theoretical specific energy of lithium-ion batteries (∼410 Wh kg-1, LiCoO2/graphite).

Original languageEnglish
Pages (from-to)163-168
Number of pages6
JournalElectrochimica Acta
Volume118
DOIs
StatePublished - 1 Feb 2014
Externally publishedYes

Keywords

  • Cathodal diffusion layer
  • Direct methanol fuel cell
  • Mass transfer
  • Membrane electrode assembly
  • Mesoporous carbon

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