A CNT (carbon nanotube) paper as cathode gas diffusion electrode for water management of passive μ-DMFC (micro-direct methanol fuel cell) with highly concentrated methanol

Huichao Deng; Yufeng Zhang; Xue Zheng; Yang Li; Xuelin Zhang; Xiaowei Liu

doi:10.1016/j.energy.2015.01.034

A CNT (carbon nanotube) paper as cathode gas diffusion electrode for water management of passive μ-DMFC (micro-direct methanol fuel cell) with highly concentrated methanol

Huichao Deng
, Yufeng Zhang^*
, Xue Zheng
, Yang Li
, Xuelin Zhang
, Xiaowei Liu

^*Corresponding author for this work

Harbin Institute of Technology
Ministry of Education of the People's Republic of China

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

Abstract

A novel MEA (membrane electrode assembly) structure of passive μ-DMFC (micro-direct methanol fuel cell) controls water management and decreases methanol crossover. The CNT (carbon nanotube) paper replacing CP (carbon paper) as GDL (gas diffusion paper) enhances water back diffusion which passively prevents flooding in the cathode and promotes low methanol crossover. Moreover, the unique structure of CNT paper can also enhance efficiency of oxygen mass transport and catalyst utilization. The passive μ-DMFC with CNT-MEA exhibits significantly higher performance than passive μ-DMFC with CP-MEA and can operate in high methanol concentration, showing the peak power density of 23.2mWcm^-2. The energy efficiency and fuel utilization efficiency are obviously improved from 11.54% to 22.7% and 36.61%-49.34%, respectively, and the water transport coefficient is 0.47 which is lower than previously reported passive μ-DMFC with CP.

Original language	English
Pages (from-to)	236-241
Number of pages	6
Journal	Energy
Volume	82
DOIs	https://doi.org/10.1016/j.energy.2015.01.034
State	Published - 15 Mar 2015

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Carbon nanotube
Methanol crossover
Micro direct methanol fuel cell
Water management

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10.1016/j.energy.2015.01.034

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title = "A CNT (carbon nanotube) paper as cathode gas diffusion electrode for water management of passive μ-DMFC (micro-direct methanol fuel cell) with highly concentrated methanol",

abstract = "A novel MEA (membrane electrode assembly) structure of passive μ-DMFC (micro-direct methanol fuel cell) controls water management and decreases methanol crossover. The CNT (carbon nanotube) paper replacing CP (carbon paper) as GDL (gas diffusion paper) enhances water back diffusion which passively prevents flooding in the cathode and promotes low methanol crossover. Moreover, the unique structure of CNT paper can also enhance efficiency of oxygen mass transport and catalyst utilization. The passive μ-DMFC with CNT-MEA exhibits significantly higher performance than passive μ-DMFC with CP-MEA and can operate in high methanol concentration, showing the peak power density of 23.2mWcm-2. The energy efficiency and fuel utilization efficiency are obviously improved from 11.54\% to 22.7\% and 36.61\%-49.34\%, respectively, and the water transport coefficient is 0.47 which is lower than previously reported passive μ-DMFC with CP.",

keywords = "Carbon nanotube, Methanol crossover, Micro direct methanol fuel cell, Water management",

author = "Huichao Deng and Yufeng Zhang and Xue Zheng and Yang Li and Xuelin Zhang and Xiaowei Liu",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd.",

year = "2015",

month = mar,

day = "15",

doi = "10.1016/j.energy.2015.01.034",

language = "英语",

volume = "82",

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T1 - A CNT (carbon nanotube) paper as cathode gas diffusion electrode for water management of passive μ-DMFC (micro-direct methanol fuel cell) with highly concentrated methanol

AU - Deng, Huichao

AU - Zhang, Yufeng

AU - Zheng, Xue

AU - Li, Yang

AU - Zhang, Xuelin

AU - Liu, Xiaowei

PY - 2015/3/15

Y1 - 2015/3/15

N2 - A novel MEA (membrane electrode assembly) structure of passive μ-DMFC (micro-direct methanol fuel cell) controls water management and decreases methanol crossover. The CNT (carbon nanotube) paper replacing CP (carbon paper) as GDL (gas diffusion paper) enhances water back diffusion which passively prevents flooding in the cathode and promotes low methanol crossover. Moreover, the unique structure of CNT paper can also enhance efficiency of oxygen mass transport and catalyst utilization. The passive μ-DMFC with CNT-MEA exhibits significantly higher performance than passive μ-DMFC with CP-MEA and can operate in high methanol concentration, showing the peak power density of 23.2mWcm-2. The energy efficiency and fuel utilization efficiency are obviously improved from 11.54% to 22.7% and 36.61%-49.34%, respectively, and the water transport coefficient is 0.47 which is lower than previously reported passive μ-DMFC with CP.

AB - A novel MEA (membrane electrode assembly) structure of passive μ-DMFC (micro-direct methanol fuel cell) controls water management and decreases methanol crossover. The CNT (carbon nanotube) paper replacing CP (carbon paper) as GDL (gas diffusion paper) enhances water back diffusion which passively prevents flooding in the cathode and promotes low methanol crossover. Moreover, the unique structure of CNT paper can also enhance efficiency of oxygen mass transport and catalyst utilization. The passive μ-DMFC with CNT-MEA exhibits significantly higher performance than passive μ-DMFC with CP-MEA and can operate in high methanol concentration, showing the peak power density of 23.2mWcm-2. The energy efficiency and fuel utilization efficiency are obviously improved from 11.54% to 22.7% and 36.61%-49.34%, respectively, and the water transport coefficient is 0.47 which is lower than previously reported passive μ-DMFC with CP.

KW - Carbon nanotube

KW - Methanol crossover

KW - Micro direct methanol fuel cell

KW - Water management

UR - https://www.scopus.com/pages/publications/84926164631

U2 - 10.1016/j.energy.2015.01.034

DO - 10.1016/j.energy.2015.01.034

M3 - 文章

AN - SCOPUS:84926164631

SN - 0360-5442

VL - 82

SP - 236

EP - 241

JO - Energy

JF - Energy

ER -

A CNT (carbon nanotube) paper as cathode gas diffusion electrode for water management of passive μ-DMFC (micro-direct methanol fuel cell) with highly concentrated methanol

Abstract

UN SDGs

Keywords

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