Electrocatalytic activity of Cu-Co prussian blue analogue and its calcined derivatives towards OER

IF 3.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences Pub Date : 2025-03-04 DOI:10.1016/j.solidstatesciences.2025.107887

Farnaz Kazemzadeh, Behzad Haghighi

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引用次数: 0

Abstract

Cu-Co prussian blue analogue (Cu-Co:PBA) was synthesized, mixed with graphite and calcined at 550 °C for 4 h to prepare calcined derivative of Cu-Co:PBA and graphite (G@Cu-Co:PBA©). Also, graphite, Cu-Co:PBA and dopant (sodium hypophosphite, thiourea, melamine and glucose for P, S, N and O doping, respectively) were mixed and calcined at a similar procedure to prepare X-doped calcined derivatives of G@Cu-Co:PBA (X-doped:G@Cu-Co:PBA© where X = P, S, N, and O). Then, different modified carbon paste electrodes (CPEs) were fabricated with the prepared materials and their electrocatalytic activities towards oxygen evolution reaction (OER) were investigated in an alkaline medium. The anodic polarization curves of the modified CPEs were recorded and their corresponding Tafel plots were obtained to calculate their onset potentials, Tafel slopes and η₁₀ (the required overpotential to achieve the anodic current density of 10 mA cm⁻²) as the electrocatalytic performance's criteria to evaluate the effect of calcination and doping on their electrocatalytic activity towards OER. The results revealed that the electrocatalytic performance of CPEs modified with X-doped:G@Cu-Co:PBA© (where X = P, S, N, and O) towards OER improved and their onset potentials and Tafel slopes decreased when CPEs were modified with X-doped in the order O-doped, N-doped, S-doped and P-doped.

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来源期刊

Solid State Sciences 化学-无机化学与核化学

CiteScore

6.60

自引率

2.90%

发文量

214

审稿时长

27 days

期刊介绍： Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.