A Development in Direct Borohydride/Hydrogen Peroxide Fuel Cell Using Nanostructured Ni‐Pt/C Anode

Abstract

A direct borohydride fuel cell (DBFC) using H2O2 as oxidizer has been developed. The NaBH4/H2O2 fuel cell is assembled by using Ni‐Pt/C composite as anode catalyst, Pt/C as cathode catalyst, and Nafion® membrane as electrolyte. The compositions, morphology and particle sizes and of catalysts are evaluated by means of scanning electron microscopy (SEM), energy‐dispersive X‐ray spectroscopy (EDS), scanning electron microscopy and transmission electron microscopy (TEM), respectively. TEM images show that Ni‐Pt/C nanoparticles have an even size distribution with an average diameter of less than 20 nm. In this work, DBFC performance is studied under different operation conditions including operation temperature, borohydride concentration, and oxidant concentration. The experimental results show that the power density increased by increasing the temperature and increasing the concentration of oxidant. Experiments also show that electrochemical performance is not considerably affected by NaBH4 concentration. So that, it is found that 1.5M NaBH4 concentration is optimum for DBFC operation. A maximum power density of 140 mW cm−2 or 0.11 mW µg−1Pt total has been achieved at a cell voltage of 1.011 V at 55 °C. The cell is operated for about 72 h and its performance stability is recorded.

Synergistic Integration of Hydrogen Peroxide Powered Valveless Micropumps and Membraneless Fuel Cells: A Comprehensive Review

“…[ 105 ] Further advancements were seen in a DBFC using a Ni‐Pt/C composite as the anode catalyst, which achieved a peak power density of 140 mW cm −2 at 55 °C. [ 106 ] Studies explored diverse approaches, such as the use of carbon‐supported Prussian Blue as a cathode catalyst, which showcased unique electron‐transfer properties, [ 107 ] and a DBFC with a Pd/Ir catalyzed microfibrous carbon cathode that highlighted the synergistic effects of alloy catalysts. [ 108 ] Another significant advancement was the use of gold nanoparticles on reduced graphene oxide foam as an anode material for the DBHPFC, which showcased enhanced electrocatalytic properties due to the synergistic effects of gold and graphene.…”

From PET Bottles Waste to N-Doped Graphene as Sustainable Electrocatalyst Support for Direct Liquid Fuel Cells

“…Namely, a mass-specific peak power density value as high as 15.8 W mg Pt −1 was reached at a cell voltage value of 1.7 V and a current density of 48.2 A mg Pt −1 . Obtained DBPFC results were compared with those reported in the literature [49][50][51][52]. Table 2 summarizes the DBPFCs results involving Pt and different carbon supports.…”

“…Linear scan voltammetry with a rotating disk electrode was run in the range from OCP to 0 V at 10 mV s −1 and different rotation rates between 0 and 2400 rpm. Finally, fuel cell tests were conducted under the optimized conditions described in our previous study using 1 M NaBH 4 in 4 NaOH and 5 M H 2 O 2 in 1.5 M HCl solutions as an anolyte and catholyte, respectively [51].…”

A cobalt–pyrrole coordination compound as high performance cathode catalyst for direct borohydride fuel cells

“…As is shown in Table 4, compared with similar materials in the previous articles, Co-pyrrole/MPC catalyst had much higher power intensity. [47][48][49][50]…”