期刊
JOURNAL OF POWER SOURCES
卷 196, 期 20, 页码 8257-8264出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2011.06.009
关键词
Direct borohydride fuel cell; Cross-link; Chitosan; Membrane; Chemical hydrogel; Binder
资金
- State of Ohio
- ITN Energy Systems of Littleton Colorado
A cross-linked chitosan (CCS) membrane has been prepared by a solution casting method using sulfuric acid as cross-linking agent. The CCS membrane was used as the polymer electrolyte and separator in a direct borohydride fuel cell (DBFC). Ionic conductivity and borohydride crossover rate have been measured for the CCS membrane. The DBFC used in this study employed nickel-based composite as anode catalyst and Nafion (R) as anode binder. The power performance of the CCS membrane-based DBFC was compared with a similar DBFC employing Nafion (R) 212 (N212) membrane as electrolyte /separator. The CCS membrane-based DBFC exhibited better power performance as compared to N212 membrane-based DBFC. Encouraged by this result, chitosan chemical hydrogel (CCH) was prepared and used as binder for anode catalysts. A DBFC comprising CCS membrane and CCH as anode binder was studied and found to exhibit even better power performance at all temperatures in this study. A maximum peak power density of 450 mW cm(-2) was observed at 60 degrees C for DBFC employing CCS membrane and CCH binder-based anode. The chitosan-based DBFC was operated continuously for 100h and its performance stability was recorded. (C) 2011 Elsevier B.V. All rights reserved.
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