Electrochemical Energy Conversion from Direct Oxidation of Glucose on Active Electrode Materials

Abstract

Electrochemical behavior of carbon supported platinum and gold-based catalysts towards glucose oxidation and oxygen reduction reaction were investigated separately in alkaline medium before implementing the glucose/O2 fuel cell with the best anode and cathode catalysts. These electrode materials, prepared from a surfactant-free synthesis approach, were then used in low metal loadings in a fuel cell operating in alkaline medium which can be easily removed on resin for analyzing all the reaction products, as any toxic compound has to be avoided for the interest of this specific application. Pt/rGO is the most active anode towards the glucose oxidation. For all tested catalysts, this oxidation reaction leads mainly to gluconate without chromatographically detectable reaction products resulted from CC bond cleavage.

N, S and Transition-Metal Co-Doped Graphene Nanocomposites as High-Performance Catalyst for Glucose Oxidation in a Direct Glucose Alkaline Fuel Cell

“…The strong peak near 168.35 eV can also be attributed to some oxidized sulfur, which usually forms at the edge of graphene. Due to the spin-orbit coupling in the sulfur atom, the first two peaks were related to the 2p 3/2 (161.44 eV) and 2p 1/2 (162.6 eV) of thiophene S [ 42 ]. The remaining peak C-SOx-C was caused by the sulfur element in sulfur oxide.…”

New insights on the selective electroconversion of the cellulosic biomass-derived glucose at PtAu nanocatalysts in an anion exchange membrane fuel cell

“…We previously examined the electrochemical properties by cyclic voltammetry (CV), and electrocatalytic performance by the direct glucose fuel cell in alkaline medium [39]. So, the characterization was not performed herein.…”

“…More conductive material such as graphene layer was used as substrate for electrodepositing Au and Pt nanocatalysts for glucose oxidation [38]. BAE method was also performed to disseminate catalysts nanoparticles on reduced graphene oxide (rGO) [39]. The latter approach method is a surfactant-free synthesis based on the anion exchange between the bromide and the chloride anions before reduction by sodium borohydride.…”

“…Even though we previously reported the fuel cell performance of the AuPt catalysts synthesized by the BAE method [28,39], a precise electroanalytic investigation about the distribution of the reaction products is still missing. Indeed, fuel cells are expected to operate either in galvanostatic or potentiostatic modes and there is no information about the implications resulting from such operation.…”

Remarkable bismuth-gold alloy decorated on MWCNT for glucose electrooxidation: the effect of bismuth promotion and optimization via response surface methodology

“…Glucose electrooxidation (GAEO) to gluconic acid reactions are given as follows [23,24] (3) The development of anode catalysts with high GAEO activity is crucial for the commercialization of the direct glucose fuel cell. Hence, the anode catalyst performance of Fe 15 Pt 85 [25], Ni-Fe [26], Ni-Co [27], Au [28], Pt [29], G-ITO [30], AgNi [31], Pd [32], FeCo 2 O 4 [33], and Pd-Au [34] nanocatalysts have been investigated for direct GA fuel cells (DGFC). For instance, Chai et al reported that Pd 3 Cu-B/C nanocatalyst synthesized by a simple aqueous phase approach method had high GAEO activity and stability for GAEO reaction in fuel cell [35].…”