Ferromagnetic single-atom spin catalyst for boosting water splitting

Sun, Tao; Tang, Zhiyuan; Zang, Wenjie; Li, Zejun; Li, Jing; Li, Zhihao; Cao, Lixin; Rodriguez, Jan Sebastian Dominic; Mariano, Carl Osby M.; Xu, Haomin; Lyu, Pin; Hai, Xiao; Lin, Huihui; Sheng, Xiaoyu; Shi, Jiwei; Zheng, Yi; Lu, Ying‐Rui; He, Qian; Chen, Jingsheng; Новоселов, К. С.; Chuang, Cheng‐Hao; Xi, Shibo; Luo, Xin; Lu, Jiong

doi:10.1038/s41565-023-01407-1

Cited by 131 publications

(53 citation statements)

References 55 publications

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“…Additionally, increasing the remanent magnetism of the catalysts is also an effective method to boost the intrinsic activity without the assistance of magnetic field. Besides above oxides of magnetic element (Fe, Co, Ni), their hydroxides 115 and sulfides 116 the increase of magnetic field (0∼502 mT) (Figure 9H). The physics of magnetic-field enhancement on the OER is that the external magnetic field can align the magnetic domain configuration of multidomain FM catalysts in an orderly direction, as demonstrated by the schematic diagram in Figure 2C.…”

Section: Magnetic Field-enhanced Oermentioning

confidence: 94%

“…Additionally, increasing the remanent magnetism of the catalysts is also an effective method to boost the intrinsic activity without the assistance of magnetic field. Besides above oxides of magnetic element (Fe, Co, Ni), their hydroxides and sulfides also exhibit obvious magnetic enhancement on OER activity (Figure G, H). For example, Ni, Co, Fe based layered double hydroxides (LDHs) (NCFL) have a strong spin magnetic effect about −34.8 mV/T (Figure G) and the OER performance of Ni doped MoSe 2 is gradually improved with the increase of magnetic field (0∼502 mT) (Figure H).…”

Section: Magnetism-enhanced Electrocatalysismentioning

confidence: 97%

“…(H) LSV curves of Ni doped MoS 2 under different magnetic fields. Inset shows photo images of Mo 1– x Ni x S 2 as OER catalysts in water splitting cells at 1.65 V without (left) and with (right) magnetic fields (Reproduced from ref . Copyright 2023 Springer Nature).…”

Section: Magnetism-enhanced Electrocatalysismentioning

confidence: 99%

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Spin-Modulated Oxygen Electrocatalysis

Fang,

Zhao,

Shen

et al. 2023

Precision Chemistry

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The electrocatalysis reactions involving oxygen, such as oxygen evolution reaction (OER) and oxygen reduction reaction (ORR), play a critical role in energy storage/ conversion applications, e.g., fuel cells, metal-air batteries, and electrochemical water splitting. The high kinetic energy barrier of the OER/ORR is highly associated with the spin state interconversion between singlet OH − /H 2 O and triplet O 2 , which is influenced by the spin state and magnetism of catalysts. This Review summarizes recent progress and advances in understanding spin/magnetism-related effects in oxygen electrocatalysis to develop spin theory. It is demonstrated that the spin states (low, intermediate, and high spin) of magnetic transition metal catalysts (TMCs) can directly affect the reaction barriers of OER/ORR by tailoring the bonding of oxygen intermediates with TMCs. Besides, the spin states of TMCs can build a spin-selective channel to filter the electron spins required for the single/triplet interconversion of O species during OER/ORR. In this Review, we introduced many approaches to modulating spin state, for instance, altering the crystal field, oxidation state of active-site ions, and the morphology of TMCs. What's more, a magnetic field can drive the spin flip of magnetic ions to achieve the spin alignment (↑↑) (i.e., facilitating spin polarization), which will strengthen the spin selectivity for accelerating the filtration and transfer of the spins with the same direction for the generation and conversion of triplet ↑O�O↑. Importantly, the origin of magnetic field enhancement on OER/ORR are deeply discussed, which provides a great vision for the magnetism-assisted catalysis. Finally, the challenges and perspectives for future development of spin/magnetism catalysis are presented. This Review is expected to highlight the significance of spin/magnetism theory in breaking the bottleneck of electrocatalysis field and promote the development of high-efficientcy electrocatalysts for practical applications.

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Section: Magnetic Field-enhanced Oermentioning

confidence: 94%

“…Additionally, increasing the remanent magnetism of the catalysts is also an effective method to boost the intrinsic activity without the assistance of magnetic field. Besides above oxides of magnetic element (Fe, Co, Ni), their hydroxides and sulfides also exhibit obvious magnetic enhancement on OER activity (Figure G, H). For example, Ni, Co, Fe based layered double hydroxides (LDHs) (NCFL) have a strong spin magnetic effect about −34.8 mV/T (Figure G) and the OER performance of Ni doped MoSe 2 is gradually improved with the increase of magnetic field (0∼502 mT) (Figure H).…”

Section: Magnetism-enhanced Electrocatalysismentioning

confidence: 97%

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Spin-Modulated Oxygen Electrocatalysis

Fang,

Zhao,

Shen

et al. 2023

Precision Chemistry

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“…Transition metal doping is a common strategy for regulating electronic and geometric structures for enhanced intrinsic activities and exposed active sites. 8,9 Metal dopants with various electronegativities can transform the electronic structure of CoP. The differences in the radius of the dopants and the pristine atoms lead to lattice distortion and pore formation, improving the active sites and accelerating the mass transfer.…”

Section: Introductionmentioning

confidence: 99%

Tip effect assisted high active sites for oxygen evolution reaction tuned using transition metals (Cr, Fe and Mo) doped with CoP

Zhang,

Zhu,

et al. 2023

J. Mater. Chem. A

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“…The oxygen evolution reaction (OER) is one of the key electrochemical reactions in energy conversion and storage, particularly in water-splitting and metal-air batteries. − Due to its requirement for a four-electron proton-coupled transfer process, accompanied by the breaking of O–H bonds and formation of O–O bonds, the slow kinetics result in a relatively high overpotential to conquer the energy barriers. − Hitherto, Ir- or Ru-based oxides and their composite materials have continued to be considered the most developed OER electrocatalysts despite their discontented durability, high cost, and scarcity. − To address this issue, numerous attempts have been made to create highly efficient, cost-effective, and abundantly available OER catalysts. − …”

Section: Introductionmentioning

confidence: 99%

Self-Reconstructed Two-Dimensional Cluster-Based Co–Organic Layer Heterojunctions for Enhanced Oxygen Evolution Reactions

Wu,

Zhao,

Hua

et al. 2023

Inorg. Chem.

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When it comes to an efficient catalytic oxygen evolution reaction (OER) in the production of renewable energy and chemicals, the construction of heterogeneous structures is crucial to break the linear scalar relationship of a single catalyst. This heterogeneous structure construction helps creatively achieve high activity and stability. However, the synthesis process of heterogeneous crystalline materials is often complex and challenging to capture and reproduce, which limits their application. Here, the dynamic process of structural changes in Co-MOFs in alkali was captured by in situ powder X-ray diffraction, FT-IR spectroscopy, and Raman spectroscopy, and several self-reconfigured MOF heterogeneous materials with different structures were stably isolated. The created β-Co(OH)2/Co-MOF heterojunction structure facilitates rapid mass–charge transfer and exposure of active sites, which significantly enhanced OER activity. Experimental results show that this heterogeneous structure achieves a low overpotential of 333 mV at 10 mA cm–2. The findings provide new insights and directions for the search for highly reactive cobalt-based MOFs for sustainable energy technologies.

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Ferromagnetic single-atom spin catalyst for boosting water splitting

Cited by 131 publications

References 55 publications

Spin-Modulated Oxygen Electrocatalysis

Spin-Modulated Oxygen Electrocatalysis

Tip effect assisted high active sites for oxygen evolution reaction tuned using transition metals (Cr, Fe and Mo) doped with CoP

Self-Reconstructed Two-Dimensional Cluster-Based Co–Organic Layer Heterojunctions for Enhanced Oxygen Evolution Reactions

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