Introducing catalyst in alkaline membrane for improved performance direct borohydride fuel cells
Qin, HY; Lin, LX; Chu, W; Jiang, W; He, Y; Shi, Q; Deng, YH; Ji, ZG; Liu, JB; Tao, SW
2018
发表期刊JOURNAL OF POWER SOURCES
ISSN0378-7753
卷号374页码:113-120
文章类型期刊论文
摘要A catalytic material is introduced into the polymer matrix to prepare a novel polymeric alkaline electrolyte membrane (AEM) which simultaneously increases ionic conductivity, reduces the fuel cross-over. In this work, the hydroxide anion exchange membrane is mainly composed of poly(vinylalcohol) and alkaline exchange resin. CoCl2 is added into the poly(vinylalcohol) and alkaline exchange resin gel before casting the membrane to introduce catalytic materials. CoCl2 is converted into CoOOH after the reaction with KOH solution. The crystallinity of the polymer matrix decreases and the ionic conductivity of the composite membrane is notably improved by the introduction of Co-species. A direct borohydride fuel cell using the composite membrane exhibits an open circuit voltage of 1.11 V at 30 degrees C, which is notably higher than that of cells using other AEMs. The cell using the composite membrane achieves a maximum power density of 283 mW cm(-2) at 60 degrees C while the cell using the membrane without Co-species only reaches 117 mW cm(-2) at the same conditions. The outstanding performance of the cell using the composite membrane benefits from impregnation of the catalytic Co-species in the membrane, which not only increases the ionic conductivity but also reduces electrode polarization thus improves the fuel cell performance. This work provides a new approach to develop high-performance fuel cells through adding catalysts in the electrolyte membrane.
关键词Polymer Electrolyte Membrane Anion-exchange Membranes Cobalt Hydroxide Anode Conductivity Diagnosis Impedance Oxidation
DOI10.1016/j.jpowsour.2017.11.008
收录类别SCI
语种英语
WOS记录号WOS:000418391900015
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/29054
专题中科院上海应用物理研究所2011-2018年
作者单位1.Qin, HY
2.Lin, LX
3.Chu, W
4.Jiang, W
5.He, Y
6.Shi, Q
7.Deng, YH
8.Ji, ZG
9.Liu, JB
10.Tao, SW
推荐引用方式
GB/T 7714
Qin, HY,Lin, LX,Chu, W,et al. Introducing catalyst in alkaline membrane for improved performance direct borohydride fuel cells[J]. JOURNAL OF POWER SOURCES,2018,374:113-120.
APA Qin, HY.,Lin, LX.,Chu, W.,Jiang, W.,He, Y.,...&Tao, SW.(2018).Introducing catalyst in alkaline membrane for improved performance direct borohydride fuel cells.JOURNAL OF POWER SOURCES,374,113-120.
MLA Qin, HY,et al."Introducing catalyst in alkaline membrane for improved performance direct borohydride fuel cells".JOURNAL OF POWER SOURCES 374(2018):113-120.
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