Real‐Time Detection of Dynamic Restructuring in KNixFe1‐xF3 Perovskite Fluorides for Enhanced Water Oxidation DOI Open Access
Xiangrong Ren, Yiyue Zhai, Tao Gan

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 20, 2024

Mechanistic understanding of how electrode-electrolyte interfaces evolve dynamically is crucial for advancing water-electrolysis technology, especially the restructuring catalyst surface during complex electrocatalytic reactions. However, perovskite fluorides, mechanistic exploration influence dynamic on their chemical property and catalytic mechanism unclear due to poor conductivity that makes definition electrocatalyst structure difficult. Herein, oxygen evolution reaction (OER), various operando characterizations are employed investigate structure-activity relationships KNi

Language: Английский

Recent advances in noble metal-free electrocatalysts to achieve efficient alkaline water splitting DOI Creative Commons
M. Jamesh, Dingqin Hu, Jing Wang

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(20), P. 11771 - 11820

Published: Jan. 1, 2024

Electrochemical water splitting is one of the promising approaches for generating hydrogen.

Language: Английский

Citations

29
Biphase Alloy Nanoheterojunction Encapsulated within N‐Doped Carbon Nanotubes as Bifunctional Oxygen Electrocatalyst for High‐Performance Zn‐Air and Mg‐Air Batteries DOI Open Access
Min Wang, Jing Xie,

Zhenjiang Lu

et al.

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

Published: Jan. 10, 2025

Abstract N‐doped carbon confined alloy catalysts possess considerable potential in facilitating oxygen electrocatalytic reaction and consequent applications metal air batteries, but the sluggish catalytic kinetics high barrier of reduction (ORR) remain bottleneck restricting its further development. Here, a novel CoFe‐NiFe biphase nanoheterojunction encapsulated within nanotubes (CoFe‐NiFe@NCNT) is fabricated via hydrothermal carbothermic approach. Owing to plentiful active sites electrical conductance, difference between OER ORR amounts merely 0.68 V. Simultaneously, performance Zn‐air Mg‐air batteries assembled by CoFe‐NiFe@NCNT serving as air‐cathode are superior that commercial Pt/C + RuO 2 . The DFT outcomes reveal transformation *OOH *O rate‐determining step (RDS) ORR/OER. Also, synergy heterojunction conducive reduce energy barrier. This study offers profound understanding toward structural design electrocatalysts utilization metal‐air for portable wearable electronic apparatuses.

Language: Английский

Citations

3
Harnessing Multi‐Asymmetric Engineering: A New Horizon in Bifunctional Oxygen Electrocatalysis with Iron‐Group Atom‐Cluster Nanohybrid DOI
Qiaoling Xu, Lei Zhang,

Luhan Li

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 27, 2024

Abstract Integrating active sites for oxygen reduction and evolution reactions (ORR OER) is pivotal advancing bifunctional electrodes. Addressing the geometric/electronic properties of these essential to disrupt linear scaling relationship between adsorption desorption complex intermediates. Herein, a proof‐of‐concept presented constructing asymmetric trinuclear employing both composition‐ size‐based coupling strategies. These comprise ORR‐active Fe single atom (Fe SA ), OER‐active atomically clustered species AC Ni as modulators. This AC‐SA ‐Ni @N‐doped carbon exhibits excellent catalytic activities, with narrow potential gap 0.661 V an ORR half‐wave 0.931 OER 1.592 at 10 mA cm −2 . The Zn‐air battery this material achieves peak power density 293 mW , specific capacity 748 mAh g Zn −1 remarkable stability. Experimental findings theoretical simulations reveal that induced strong electronic among centers, facilitating charge redistribution optimizing barriers enhances rapid release * OH during efficient transformation from O OOH OER. study presents novel strategy developing robust

Language: Английский

Citations

11
Tailoring microenvironment for efficient CO2 electroreduction through nanoconfinement strategy DOI
Lulu Chen, Minhan Li, Jianan Zhang

et al.

Nano Research, Journal Year: 2024, Volume and Issue: 17(9), P. 7880 - 7899

Published: Aug. 7, 2024

Language: Английский

Citations

6
Collaborative Interface Optimization Strategy Guided Fe3C/MnO-NC Electrocatalysts for Rechargeable Flexible Zinc-Air Batteries DOI

Jiahuan Zhong,

Qianqun Xu,

Ruchun Li

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: unknown, P. 124615 - 124615

Published: Sept. 1, 2024

Language: Английский

Citations

5
A(CoFe)(S2)2/CoFe heterostructure constructed in S, N co-doped carbon nanotubes as an efficient oxygen electrocatalyst for zinc-air battery DOI

Bowen Yuan,

Bin Liu,

Jin Liu

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 679, P. 75 - 89

Published: Sept. 28, 2024

Language: Английский

Citations

5
Lattice Oxygen Redox Dynamics in Zeolite‐Encapsulated CsPbBr3 Perovskite OER Electrocatalysts DOI Creative Commons
Xiangrong Ren, Yiyue Zhai, Na Yang

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

Abstract Understanding the oxygen evolution reaction (OER) mechanism is pivotal for improving overall efficiency of water electrolysis. Despite methylammonium lead halide perovskites (MAPbX 3 ) have shown promising OER performance due to their soft‐lattice nature that allows lattice‐oxygen oxidation active α‐PbO 2 layer surface, role A‐site MA or X‐site elements in electrochemical reconstruction and mechanisms has yet be explored. Here, it demonstrated perovskite@zeolite composites intrinsically dominated by group lead‐halide perovskites, while type halogen crucial kinetics composites. Using CsPbBr x I 3‐ @AlPO‐5 ( = 0, 1, 2, 3) as a model catalyst, found behaves oxygen‐intercalation pseudocapacitance during surface restructuring absence halogen‐ion migration phase separation , achieving larger diffusion rate OH − within core‐shell structure. Moreover, distinct from single‐metal‐site MAPbBr @AlPO‐5, experimental theoretical investigations reveal soft lattice triggers oxygen‐vacancy‐site via /α‐PbO interface, resulting excellent performance. Owing variety easy tailoring perovskite compositions, these findings pave way development novel catalysts efficient electrocatalysis.

Language: Английский

Citations

0
General design of self-supported Co-Ni/nitrogen-doped carbon nanotubes array for efficient oxygen evolution reaction DOI

Mengfei Mou,

Yameng Wang,

Wenjie Yu

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

0
Binary Metal Sulfide Nanoparticles as a Bifunctional Electrocatalyst for Durable Zn-Air Batteries DOI
Meiqi Li,

Yang Xiang,

Li Ping

et al.

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

Language: Английский

Citations

0
Molten Salt Assisted Ni‐Doped α‐FeOOH on Regulating Spin State for Efficient Oxygen Evolution Reactions DOI
Shan Jiang, Qing Zhao, Shuo Liu

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Abstract α‐FeOOH is a promising catalyst for oxygen evolution reaction (OER). However, owing to the high spin state (HS, t 2g 3 e g 2 ) of Fe 3+ in typical structure, bonding strength oxygen‐containing intermediates are usually too strong. In this work, successful synthesis intermediate (IS) structure on iron foam (IF) by introducing Ni atom reported. Refined structural analysis and theoretical calculations reveal that doped‐Ni enlarged d orbital splitting energy, thus converting crystal field stable HS state. The IS optimized adsorption energy reduced barrier rate‐determining step (RDS, O* OOH*). Moreover, doped generation 4+ during OER, combined with amorphous layer formed molten salt method, inhibiting dissolution Fe. as‐obtained exhibited excellent OER activity an overpotential 178 mV at 10 mA cm −2 Tafel slope 27 dec −1 , which outperforms those state‐of‐the‐art oxyhydroxides catalysts. paper, fast efficient method construction low‐cost high‐activity iron‐based provided.

Language: Английский

Citations

0