Cation Defect Engineering of Transition Metal Electrocatalysts for Oxygen Evolution Reaction

Yan, Dafeng; Xia, Chenfeng; Zhang, Wenjing; Hu, Qi; He, Chuanxin; Xia, Bao Yu; Wang, Shuangyin

doi:10.1002/aenm.202202317

Cited by 110 publications

(59 citation statements)

References 147 publications

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“…In general, the traditional LDHs are layered stacked structures, which not only shield a large number of catalytic active sites, but also inhibit the electron and mass transfer during electrocatalytic reactions over the catalyst. Therefore, it can be stripped into ultrathin nanosheets with smaller sizes by the exfoliation strategy to significantly enhance electrocatalytic performance [ 125 , 126 , 127 , 128 , 129 ]. The peeled single-layer ultra-thin LDHs nanosheets provide a large surface area and more electrochemically active sites, thus facilitating the reaction with reactants.…”

Section: Morphological Strategymentioning

confidence: 99%

Recent Advances of Modified Ni (Co, Fe)-Based LDH 2D Materials for Water Splitting

Bao

Liu

et al. 2023

Molecules

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Water splitting technology is an efficient approach to produce hydrogen (H2) as an energy carrier, which can address the problems of environmental deterioration and energy shortage well, as well as establishment of a clean and sustainable hydrogen economy powered by renewable energy sources due to the green reaction of H2 with O2. The efficiency of H2 production by water splitting technology is intimately related with the reactions on the electrode. Nowadays, the efficient electrocatalysts in water splitting reactions are the precious metal-based materials, i.e., Pt/C, RuO2, and IrO2. Ni (Co, Fe)-based layered double hydroxides (LDH) two-dimensional (2D) materials are the typical non-precious metal-based materials in water splitting with their advantages including low cost, excellent electrocatalytic performance, and simple preparation methods. They exhibit great potential for the substitution of precious metal-based materials. This review summarizes the recent progress of Ni (Co, Fe)-based LDH 2D materials for water splitting, and mainly focuses on discussing and analyzing the different strategies for modifying LDH materials towards high electrocatalytic performance. We also discuss recent achievements, including their electronic structure, electrocatalytic performance, catalytic center, preparation process, and catalytic mechanism. Furthermore, the characterization progress in revealing the electronic structure and catalytic mechanism of LDH is highlighted in this review. Finally, we put forward some future perspectives relating to design and explore advanced LDH catalysts in water splitting.

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Section: Morphological Strategymentioning

confidence: 99%

Recent Advances of Modified Ni (Co, Fe)-Based LDH 2D Materials for Water Splitting

Bao

Liu

et al. 2023

Molecules

View full text Add to dashboard Cite

show abstract

“…In general, the traditional LDHs are layered stacked structures, which not only shield a large number of catalytic active sites, but also inhibit the electron and mass transfer during electrocatalytic reactions over catalyst. Therefore, it can be stripped into ultrathin nanosheets with smaller size by exfoliation strategy to significantly enhance electrocatalytic performance [125][126][127][128][129]. The peeled single-layer ultra-thin LDHs nanosheets provide large surface area and more electrochemically active sites, thus facilitating to react with reactants.…”

Section: Exfoliationmentioning

confidence: 99%

Recent Advances of Modified Ni (Co, Fe)-based LDH 2D Materials for Water Splitting

Li¹,

Bao²,

Liu³

et al. 2023

Preprint

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Water splitting technology is an efficient approach to generate hydrogen (H2) energy, which can well address the problems of environmental deterioration and energy shortage, as well as establishment of a clean and sustainable hydrogen economy powered by renewable energy sources due to the green reaction of H2 with O2. While the efficiency of H2 production by water splitting technology is intimately related with the reactions on electrode. Nowadays, the efficient electrocatalysts in water splitting reactions are the precious metal-based materials, i.e., Pt/C, RuO2 and IrO2. Ni (Co, Fe)-based layered double hydroxides (LDH) 2D materials are the typical non-precious metal-based materials in water splitting with advantages of low cost, excellent electrocatalytic performance and simple preparation methods, which exhibits a great potential for the substitution for precious metal-based materials. This review summarizes the recent progress of Ni (Co, Fe)-based LDH 2D materials for water splitting, which mainly focuses on discussing and analyzing the different strategies to modify LDH materials towards high electrocatalytic performance. We also discuss the recent achievements including their electronic structure, electrocatalytic performance, catalytic center, preparation process and catalytic mechanism. Furthermore, the characterization progress in revealing electronic structure and catalytic mechanism of LDH is highlighted in this review. Finally, we put forward some future perspectives related to design and explore advanced LDH catalysts in water splitting.

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“…In addition to anion vacancies, cation vacancies can also greatly affect the physicochemical properties of metal compounds ( Yan et al, 2022 ). Thanks to their unique electron and orbital distribution, cation vacancies-rich materials also exhibit excellent electrocatalytic performance.…”

Section: Defect Engineering Of Metal Compoundsmentioning

confidence: 99%

Defect chemistry of electrocatalysts for CO2 reduction

Li²,

Niu³

et al. 2022

Front. Chem.

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Electrocatalytic CO2 reduction is a promising strategy for converting the greenhouse gas CO2 into high value-added products and achieving carbon neutrality. The rational design of electrocatalysts for CO2 reduction is of great significance. Defect chemistry is an important category for enhancing the intrinsic catalytic performance of electrocatalysts. Defect engineering breaks the catalytic inertia inherent in perfect structures by imparting unique electronic structures and physicochemical properties to electrocatalysts, thereby improving catalytic activity. Recently, various defective nanomaterials have been studied and show great potential in electrocatalytic CO2 reduction. There is an urgent need to gain insight into the effect of defects on catalytic performance. Here, we summarized the recent research advances on the design of various types of defects, including carbon-based materials (intrinsic defects, heteroatom doping and single-metal-atom sites) and metal compounds (vacancies, grain boundaries, and lattice defects). The major challenges and prospects of defect chemistry in electrocatalytic CO2 reduction are also proposed. This review is expected to be instructive in the development of defect engineering for CO2 reduction catalysts.

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Cation Defect Engineering of Transition Metal Electrocatalysts for Oxygen Evolution Reaction

Cited by 110 publications

References 147 publications

Recent Advances of Modified Ni (Co, Fe)-Based LDH 2D Materials for Water Splitting

Recent Advances of Modified Ni (Co, Fe)-Based LDH 2D Materials for Water Splitting

Recent Advances of Modified Ni (Co, Fe)-based LDH 2D Materials for Water Splitting

Defect chemistry of electrocatalysts for CO2 reduction

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