Carbon-supported Pd catalysts: Influences of nanostructure on their catalytic performances for borohydride electrochemical oxidation

The electrooxidation of borohydride: A mechanistic study on palladium (Pd/C) applying RRDE, 11B-NMR and FTIR

“…There is little literature concerning the reaction mechanism on palladium but several authors assume similar reaction steps to platinum catalysts [7][8][9]. The hydrolysis is reported to undergo a http://dx.doi.org/10.1016/j.apcatb.2015.07.028 0926-3373/© 2015 Elsevier B.V. All rights reserved.…”

“…Yang et al assume a 4 electron pathway on palladium based on their electrochemical experiments combined with the quantification of gaseous hydrogen (see [9]. The resulting adsorbed hydrogen atoms (reaction 11) can either react electrochemically forming water or chemically forming hydrogen.…”

Investigation of carbon-supported Ni@Ag core-shell nanoparticles as electrocatalyst for electrooxidation of sodium borohydride

“…In the past few years, various metals have been studied as the anode electrocatalysts for DBFC, such as Pt [9][10][11], Pd [12,13], Ni [14,15], Cu [16], Co [17,18] known as Bcatalytic electrodes,^and Au [4,5,19,20], Ag [4,10,11,21], known as Bnon-catalytic electrodes.^Although Ag exhibits excellent activity toward the oxidation of borohydride and is presented as a non-catalytic material with respect to BH 4 -hydrolysis, the slow electrode kinetics and low power densities indicate that Ag cannot be used alone [11,22]. Thus, it is essential to design new and effective Ag-based composite catalysts with superior performance.…”

Pd–Ir alloy as an anode material for borohydride oxidation

“…The highest power density reported for a DBFC, 1.44 W cm À2 , was obtained using a 25 cm 2 NaBH 4 /H 2 O 2 single cell with a Pd/C anode and an Au/C cathode separated by a Nafion 112 membrane [11]. The authors reported that the effective number of electrons released on a Pd electrode was less than 8 (between 4 and 6 depending on the NaBH 4 concentration) [3,12]. Despite not providing the full 8 electrons, Pd catalysts lead to large current densities and charge efficiencies [3,12].…”

“…The authors reported that the effective number of electrons released on a Pd electrode was less than 8 (between 4 and 6 depending on the NaBH 4 concentration) [3,12]. Despite not providing the full 8 electrons, Pd catalysts lead to large current densities and charge efficiencies [3,12]. Although Pd-based alloys have not been tested, alloying electrodes such as Pt, Ag or Au with other materials has improved the performance of the DBFC.…”