Carbon supported Cu-Pd nanoparticles as anode catalyst for direct borohydride-hydrogen peroxide fuel cells

Succulent-plant-like Ni-Co alloy efficient catalysts for direct borohydride fuel cells

A Ni-Co alloy catalyst with a unique succulent-plant-like morphology is prepared by a simple electrodeposition method, while the effects of deposition conditions on its performance are also investigated systematically. The research results show that the Ni_0.889-Co_0.111 catalyst exhibits excellent activity, selectivity, and stability to the borohydride oxidation reaction. Moreover, when Ni_0.889-Co_0.111 is assembled as the anode catalyst, the direct borohydride fuel cell delivers a peak power density of 490 mW cm^-2 and an open-circuit voltage of 1.87 V at 343 K and can run stably for dozens of hours. The significant improvement in Ni-Co catalyst performance can be attributed to its unique succulent-plant-like morphology and the introduction of an appropriate amount of Co.

N-Doped carbon-supported Au-modified NiFe alloy nanoparticle composite catalysts for BH4− electrooxidation

A nitrogen-doped carbon-supported Au-modified NiFe alloy nanoparticle composite catalyst (Au/NiFe/N–C) has been prepared by a simple method and used as an electrocatalyst for the BH₄⁻ oxidation reaction (BOR).

Carbon-supported Au modified N-doped carbon-coated FeMn alloy nanoparticle composites for BH4− electrocatalytic oxidation

Carbon-supported Au modified N-doped carbon-coated FeMn alloy nanoparticle composites (Au/FeMn@CN/C) are prepared and used as electrocatalysts for BH₄⁻ electrooxidation.

Novel electrocatalysts for borohydride fuel cells: enhanced power generation by optimizing anodic core–shell nanoparticles on reduced graphene oxide

C_Ni–S_Pd exhibits an excellent performance and rGO is a superior support compared with Vulcan and MWCNTs.

A binder-free paper electrode with high performance for NaBH4 oxidation

In this study, a piece of filter paper with good flexibility and hygroscopicity was used to support catalysts after a pencil drawing process.

Bifunctional Electrocatalysts for Oxygen Reduction and Borohydride Oxidation Reactions Using Ag3Sn Nanointermetallic for the Ensemble Effect

Incorporating an oxophilic metal into a noble metal to produce a cost-effective Ag₃Sn nanointermetallic catalyst is an emerging approach to enhance the catalytic activity of monometallic Ag in fuel cells, which is different from previous notions that consider a transition metal to increase the catalytic activity of Pt. The Ag₃Sn electrocatalyst is prepared by a facile electrodeposition method and exhibits high catalytic performance for the oxygen reduction reaction (ORR) and borohydride oxidation reaction (BOR). The Ag₃Sn electrocatalyst has an ORR specific activity of 0.246 mA cm^-2, 1.3 times greater than the value of commercial Pt/C (0.187 mA cm^-2) and a long-term stability with an 11 mV decrement in the half-wave potential and 7.01% loss of the diffusion-limiting current density after 2000 cycles, superior to that of Pt/C. Moreover, the Ag₃Sn electrocatalyst delivers a surprisingly higher BOR current density of 11.332 mA cm^-2 than most bimetallic Ag alloys. The better ORR catalytic activities of Ag-based alloys may arise from the ensemble effect, in which Sn atoms may promote the oxygen adsorption and Ag atoms may contribute to the removal of reaction products.

Nickel nanowires decorated with ultra-low palladium loading as an effective electrocatalyst for NaBH4 oxidation

The Pd/Ni nanowire electrode presents superior electrochemical activity and desirable stability towards NaBH₄ electrooxidation in alkaline media.