Lanthanum-mediated enhancement of low temperature hydrogenation activity and stability in nickel catalyst supported by MOFs DOI
Zhiyuan Liu, Yan Gao, Chang‐An Wang

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162497 - 162497

Published: April 1, 2025

Language: Английский

In situ self-reconstructed hierarchical bimetallic oxyhydroxide nanosheets of metallic sulfides for high-efficiency electrochemical water splitting DOI

Yaning Fan,

Junjun Zhang,

Jie Han

et al.

Materials Horizons, Journal Year: 2024, Volume and Issue: 11(7), P. 1797 - 1807

Published: Jan. 1, 2024

The obtained bimetallic sulfide catalyst can be reconstituted as FeCoOOH, which has high efficacy for water splitting. activation energy barrier of key reaction steps effectively reduced by dual-metal cooperation.

Language: Английский

Citations

36
Understanding Advanced Transition Metal‐Based Two Electron Oxygen Reduction Electrocatalysts from the Perspective of Phase Engineering DOI Creative Commons
Hongyuan Yang, Na An, Zhenhui Kang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(25)

Published: March 8, 2024

Abstract Non‐noble transition metal (TM)‐based compounds have recently become a focal point of extensive research interest as electrocatalysts for the two electron oxygen reduction (2e − ORR) process. To efficiently drive this reaction, these TM‐based must bear unique physiochemical properties, which are strongly dependent on their phase structures. Consequently, adopting engineering strategies toward structure has emerged cutting‐edge scientific pursuit, crucial achieving high activity, selectivity, and stability in electrocatalytic This comprehensive review addresses intricate field applied to non‐noble 2e ORR. First, connotation fundamental concepts related kinetics thermodynamics succinctly elucidated. Subsequently, focus shifts detailed discussion various approaches, including elemental doping, defect creation, heterostructure construction, coordination tuning, crystalline design, polymorphic transformation boost or revive ORR performance (selectivity, stability) catalysts, accompanied by an insightful exploration phase‐performance correlation. Finally, proposes fresh perspectives current challenges opportunities burgeoning field, together with several critical directions future development electrocatalysts.

Language: Английский

Citations

31
Carbon quantum dot-mediated binary metal–organic framework nanosheets for efficient oxygen evolution at ampere-level current densities in proton exchange membrane electrolyzers DOI

Qianjia Ni,

Shi‐Yuan Zhang, Kang Wang

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(45), P. 31253 - 31261

Published: Jan. 1, 2024

The widespread utilization of noble metal-based catalysts for the oxygen evolution reaction (OER) is hindered by their rarity and substantial expense, posing significant challenges large-scale applications.

Language: Английский

Citations

21
Durable Ru Nanocrystal with HfO2 Modification for Acidic Overall Water Splitting DOI Creative Commons
Xiangkai Kong, Jie Xu,

Zhicheng Ju

et al.

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: April 30, 2024

Durable and efficient bi-functional catalyst, that is capable of both oxygen evolution reaction hydrogen under acidic condition, are highly desired for the commercialization proton exchange membrane water electrolysis. Herein, we report a robust L-Ru/HfO

Language: Английский

Citations

18
Self‐Reconstructed Spinel with Enhanced SO42− Adsorption and Highly Exposed Co3+ From Heterostructure Boosts Activity and Stability at High Current Density for Overall Water Splitting DOI Open Access

Hongye Yang,

F. Y. Chen, Xusheng Wang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Abstract Developing overall water splitting non‐noble metal electrocatalysts achieving long‐term stability with high activity at industrial‐grade current density remains challenging. Herein, a self‐reconstruction strategy of Co 9 S 8 ‐Ni 3 2 /NCF is employed to fabricate Ni x 3‐x O 4 ‐Ov‐ in which partial replaced by the structure. The reconstructed ‐Ov can enhance adsorbing ability leached from initial phase compared spinel, exceeding 1000‐h oxygen evolution reaction (OER) and 600‐h 1000 mA cm −2 excellent activity. In situ Raman X‐ray photoelectron spectroscopy (XPS) results indicate that substitution for atoms enhances adsorption capacity on ‐Ov, facilitating formation high‐density 3+ active sites (400) expedited interfacial electron transfer densities. Density functional theory (DFT) calculations reveal stabilizes surface vacancies optimizes energy intermediates, thereby improving both catalytic performance. findings provide new insights into overcoming activity‐stability trade‐off contribute design

Language: Английский

Citations

5
Reinforcement of Electrocatalytic Oxygen Evolution Activity Enabled by Constructing Silver‐Incorporated NiCo‐PBA@NiFe‐LDH Hierarchical Nanoboxes DOI
Wen Cao, Jie Wu, Chunyan Zhou

et al.

Small, Journal Year: 2023, Volume and Issue: 20(24)

Published: Dec. 29, 2023

Abstract Complicated oxygen evolution reaction (OER) poses the bottleneck in improving efficiency of hydrogen production through water electrolysis. Herein, an integrated strategy to modulate electronic structure NiFe layered double hydroxide (NiFe‐LDH) is reported by constructing Ag‐incorporated NiCo‐PBA@NiFe‐LDH heterojunction with a hierarchical hollow structure. This “double heterojunction” facilitates local charge polarization at interface, thereby promoting electron transfer and reducing adsorption energy intermediates, ultimately enhancing intrinsic activity catalyst. It noteworthy that exchange bias field observed between NiCo‐PBA NiFe‐LDH, which will be conducive regulating spin states metals facilitating triplet oxygen. Additionally, unique nanoboxes provide large specific surface area ensures adequate exposure sites active sites. Profiting from synergistic advantages, overpotential as low 190 mV current density 10 mA cm −2 , Tafel slope 21 dec −1 . Moreover, functional theory (DFT) calculation further substantiated incorporation Ag can effectively reduce reactant intermediates enhance conductivity.

Language: Английский

Citations

24
Structural engineering of metal oxyhydroxide for electrochemical energy conversion and storage DOI
Jayaraman Theerthagiri, K. Karuppasamy, C. Justin Raj

et al.

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 513, P. 215880 - 215880

Published: April 30, 2024

Language: Английский

Citations

15
MoZn-based high entropy alloy catalysts enabled dual activation and stabilization in alkaline oxygen evolution DOI Creative Commons
Yunjie Mei,

Jinli Chen,

Qi Wang

et al.

Science Advances, Journal Year: 2024, Volume and Issue: 10(47)

Published: Nov. 20, 2024

It remains a grand challenge to develop electrocatalysts with simultaneously high activity, long durability, and low cost for the oxygen evolution reaction (OER), originating from two competing pathways often trade-off performances. The adsorbed mechanism (AEM) suffers sluggish kinetics due linear scaling relationship, while lattice (LOM) causes unstable structures escape. We propose MoZnFeCoNi high-entropy alloy (HEA) incorporating AEM-promoter Mo LOM-active Zn achieve dual activation stabilization efficient durable OER. Density functional theory chemical probe experiments confirmed dual-mechanism activation, representative Co-Co † -Mo sites facilitating AEM Zn-O -Ni enhancing LOM, resulting in an ultralow OER overpotential (η 10 = 221 mV). multielement interaction, structure, carbon network notably enhance structural stability catalysis (>1500 hours at 100 mA cm −2 ). Our work offers viable approach concurrently activity by designing HEA catalysts enable synergy.

Language: Английский

Citations

13
Boosting Oxygen Evolution Reaction Performance on NiFe-Based Catalysts Through d-Orbital Hybridization DOI Creative Commons
Xing Wang, Wei Pi, Sheng Hu

et al.

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)

Published: Sept. 26, 2024

Abstract Anion-exchange membrane water electrolyzers (AEMWEs) for green hydrogen production have received intensive attention due to their feasibility of using earth-abundant NiFe-based catalysts. By introducing a third metal into catalysts construct asymmetrical M-NiFe units, the d -orbital and electronic structures can be adjusted, which is an important strategy achieve sufficient oxygen evolution reaction (OER) performance in AEMWEs. Herein, ternary NiFeM (M: La, Mo) featured with distinct units varying -orbitals are reported this work. Experimental theoretical calculation results reveal that doping La leads optimized hybridization between orbital 2 p oxygen, resulting enhanced adsorption strength intermediates, reduced rate-determining step energy barrier, responsible OER performance. More critically, obtained NiFeLa catalyst only requires 1.58 V reach 1 A cm −2 anion exchange electrolyzer demonstrates excellent long-term stability up 600 h.

Language: Английский

Citations

9
FeOOH-NiV LDH Heterostructure as Efficient Electrocatalyst for Oxygen Evolution Reaction DOI
Shuming Liu,

Sol-Ji Song,

Yi Feng

et al.

Catalysis Letters, Journal Year: 2025, Volume and Issue: 155(2)

Published: Jan. 18, 2025

Language: Английский

Citations

1