Evaluation of multivalent phosphate cross-linked chitosan biopolymer membrane for direct borohydride fuel cells

摘要: Abstract The direct borohydride fuel cell (DBFC) is a promising power supply for stationary and mobile devices. A high performance low cost membrane electrolyte would reduce stack may help in its commercialization. In the work presented here, cost-effective eco-friendly chitosan has been prepared modified by phosphate or triphosphate salt. paper describes preparation method, various studies performed on it, which includes thermal analysis, water uptake, mechanical strength, ionic conductivity, cross-over measurements. These show that slightly higher figure of merit than application DBFC. chemical hydrogel synthesized used as electrode binder. borohydride-oxygen employing binder achieved peak density 685 mW cm−2 at 60 °C, over 50% DBFC using commercial Nafion® materials. addition to far superior density, this chitosan-based exhibited comparable stability efficiency Nafion®-based