Nickel-rare earth (Ce, Sm, Dy) alloy electrodes for hydrogen peroxide reduction in direct liquid fuel cells

被引：6

作者：

Santos, D. M. F. ^{[1
]}

Cardoso, D. S. P. ^{[1
]}

Sljukic, B. ^{[1
]}

Alsaiari, M. ^{[2
,3
]}

Harraz, F. A. ^{[2
,4
]}

Sequeira, C. A. C. ^{[1
]}

Maccio, D. ^{[5
]}

Saccone, A. ^{[5
]}

机构：

[1] Univ Lisbon, Ctr Phys & Engn Adv Mat, Chem Engn Dept, Lab Phys Mat & Emerging Technol,Inst Super Tecn, P-1049001 Lisbon, Portugal

[2] Najran Univ, Promising Ctr Sensors & Elect Devices PCSED, Adv Mat & Nanores Ctr, POB 1988, Najran 11001, Saudi Arabia

[3] Najran Univ, Fac Sci & Arts Sharurah, Dept Chem, Empty Quarter Res Unit, Najran, Saudi Arabia

[4] Cent Met Res & Dev Inst CMRDI, Nanomat & Nanotechnol Dept, PO 87 Helwan, Cairo 11421, Egypt

[5] Univ Genoa, Dipartimento Chim & Chim Industriale, I-16146 Genoa, Italy

来源：

MATERIALS RESEARCH BULLETIN | 2022年 / 156卷

关键词：

Hydrogen peroxide reduction reaction; Nickel -rare earth alloys; Arc melting; Direct liquid fuel cells; CATALYTIC BEHAVIOR; EFFICIENT CATALYST; PERFORMANCE; COBALT; FOAM; ELECTROREDUCTION; OXIDE; ELECTROCATALYSTS; NANOSHEETS; GRAPHENE;

D O I：

10.1016/j.materresbull.2022.111982

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hydrogen peroxide (H2O2), a reactive oxygen species, is an excellent alternative to oxygen as an oxidant for direct liquid fuel cells (DLFCs). To overcome problems related to scarcity and high cost of commonly used noble metal electrodes, nickel (Ni) and nickel-rare earth (RE = Ce, Sm, Dy) alloys are synthesised and evaluated as electrode materials for H2O2 reduction reaction (HPRR) in alkaline media. These Ni-RE alloys (containing 5 and 10 at.% RE metal) are produced by arc melting and analysed by X-ray diffraction and scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy. Voltammetric and chronoamperometric measurements are employed to assess the performance of the Ni-RE alloys for HPRR in 2 M NaOH solution. The Ni0.95Ce0.05 alloy exhibits impressively high catalytic activity for HPRR, with a number of exchanged electrons of 1.7 and activation energy of 38 kJ mol(-1), suggesting its application as cathode material in DLFCs.

引用

页数：8

共 18 条

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Maccio, D.
Saccone, A.
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