Lei Fu, Jun Zhou, Yunqing Kang, Hongfei Zhao, Yingji Zhao, Zilin Zhou, Kaiteng Wang, Kai Wu, Yusuke Yamauchi
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引用次数: 0
Abstract
Spinel oxides with both spinel and inverse spinel structures are considered highly promising electrocatalysts for the oxygen evolution reaction (OER). However, simultaneously activating two types of spinel-structured composites is essential to unlock their catalytic potential, yet this remains challenging. Herein, we demonstrate a co-doping strategy to introduce both Ni and Fe elements into phosphorus-modified Co3O4 microsphere composites to optimize electron distribution and generate abundant oxygen defects. Additionally, the resulting double-shell structure enables rapid mass transfer and enhanced electrolyte enrichment. As a result, the phosphorus-doped ternary Ni-Fe-Co oxide exhibits a low overpotential of 252 mV to achieve a current density of 10 mA cm−2, outperforming commercial RuO2. This work provides an effective approach to enhancing the OER activity of spinel oxides by fabricating dual-type spinel complexes.
期刊介绍：
The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.
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