Efficient and Ultrastable Seawater Electrolysis at Industrial Current Density with Strong Metal‐Support Interaction and Dual Cl−‐Repelling Layers DOI
Dong Liu,

Xiaotian Wei,

Jianxi Lu

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(49)

Published: Oct. 25, 2024

Abstract Direct seawater electrolysis is emerging as a promising renewable energy technology for large‐scale hydrogen generation. The development of Os‐Ni 4 Mo/MoO 2 micropillar arrays with strong metal‐support interaction (MSI) bifunctional electrocatalyst reported. structure enhances electron and mass transfer, extending catalytic reaction steps improving efficiency. Theoretical experimental studies demonstrate that the MSI between Os Ni optimizes surface electronic catalyst, reducing barrier thereby activity. Importantly, first time, dual Cl − repelling layer constructed by electrostatic force to safeguard active sites against attack during oxidation. This includes Os─Cl adsorption an in situ‐formed MoO 2− layer. As result, catalyst exhibits ultralow overpotential 113 336 mV reach 500 mA cm −2 HER OER natural from South China Sea (without purification, 1 m KOH added). Notably, it demonstrates superior stability, degrading only 0.37 µV h −1 after 2500 oxidation, significantly surpassing technical target 1.0 set United States Department Energy.

Language: Английский

Core–shell heterostructure engineering of CoP nanowires coupled NiFe LDH nanosheets for highly efficient water/seawater oxidation DOI

Guohong Gao,

Run-Ze Zhao,

Yajun Wang

et al.

Chinese Chemical Letters, Journal Year: 2023, Volume and Issue: 35(8), P. 109181 - 109181

Published: Oct. 11, 2023

Language: Английский

Citations

61
Fe2O3/P-doped CoMoO4 electrocatalyst delivers efficient overall water splitting in alkaline media DOI
Bowen Wang, Xiangxiong Chen, Yingjian He

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 346, P. 123741 - 123741

Published: Jan. 16, 2024

Language: Английский

Citations

55
Substantial Impact of Built‐in Electric Field and Electrode Potential on the Alkaline Hydrogen Evolution Reaction of Ru−CoP Urchin Arrays DOI
Shangguo Liu, Zijian Li,

Yaxiang Chang

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(12)

Published: Jan. 30, 2024

Although great efforts on the delicate construction of a built-in electric field (BIEF) to modify electronic properties active sites have been conducted, substantial impact BIEF coupled with electrode potential electrochemical reactions has not clearly investigated. Herein, we designed an alkaline hydrogen evolution reaction (HER) catalyst composed heterogeneous Ru-CoP urchin arrays carbon cloth (Ru-CoP/CC) strong guidance density functional theory (DFT) calculations. Impressively, despite its unsatisfactory activity at 10 mA cm

Language: Английский

Citations

52
Hierarchical Crystalline/Amorphous Heterostructure MoNi/NiMoOx for Electrochemical Hydrogen Evolution with Industry‐Level Activity and Stability DOI

Xiaoyun Shi,

Xiaozhong Zheng,

Hao Wang

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(41)

Published: Aug. 27, 2023

Abstract The design of cheap, efficient, and durable electrocatalysts for high‐throughput H 2 production is critical to give impetus hydrogen from fundamental practical industrial applications. Here, a hierarchical heterostructure evolution reaction (HER) electrocatalyst (MoNi/NiMoO x ) with 0D MoNi nanoalloys nanoparticles embedded on well‐assembled 1D porous NiMoO microrods in situ grown 3D nickel foam (NF) successfully constructed. synergetic effect different building units the unique structure endows MoNi/NiMoO composites highly active heterogeneous interface low water dissociation energy (Δ G diss = −1.2 eV) optimized adsorption ability H* −0.01 eV), fast electron/mass transport, strong catalyst‐support binding force. As result, optimal exhibits an ampere‐level current density 1.9 A cm −2 at ultralow overpotential 139 mV 1.0 м KOH 289 PBS solution, respectively. Particularly, scaled‐up electrodes 10 × membrane electrode assembly (MEA) electrolyzer reach high rate 12.12 L h −1 (12.12 times than that commercial NF) exhibit ultralong stability 1600 h, verifying its huge potential production.

Language: Английский

Citations

44
Rational Design of Multiple Heterostructures with Synergistic Effect for Efficient and Stable Hydrogen Evolution Toward Industrial Alkaline Water Splitting DOI
Hao Xiong, Cheng‐Feng Du,

Zelin Ma

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(37)

Published: April 21, 2024

Abstract Electrocatalytic hydrogen evolution reaction (HER) via alkaline water splitting holds great promise for industrial clean production but is frustrated by limited catalytic activity and inferior stability under high current density. Elaborate manipulating of heterostructure on robust electrodes essential challenging accelerating HER kinetics with durability. Herein, a nickel mesh electrode, offering mechanical stability, directly engineered layers multiple heterostructures (r‐Mn–Ni/CoP) facile one‐pot electrodeposition followed surface reconstruction strategy. The abundant composed crystalline CoP, NiP, amorphous region, additional Mn doping considerably manipulate the electronic structure optimized charge transfer; while in situ surface‐reconstructed hydrophilic nanoflakes enable rapid wetting active sites to electrolyte. Consequently, r‐Mn–Ni/CoP requires only 134 mV overpotential at density 100 mA cm −2 , superior monophasic undoped samples, majority reported catalysts. Remarkably, an electrolyzer cathode demonstrates extraordinary voltage 1.734 V 300 stable operation 800 h. finding provides feasible strategy fabrication nonprecious‐metal‐based electrocatalysts toward electrolysis.

Language: Английский

Citations

36
In Situ Active Site Refreshing of Electro‐Catalytic Materials for Ultra‐Durable Hydrogen Evolution at Elevated Current Density DOI
Qin Li, Chang Chen,

Wenshu Luo

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(17)

Published: Jan. 22, 2024

Abstract Enhancing the durability of catalysts is critical significance to industrialize green hydrogen production. Herein, a novel active site in situ refreshing strategy proposed and demonstrated fabricate highly ultra‐durable evolution reaction (HER) electro‐catalytic material by HER activation. Briefly, composite catalytic synthesized, which features Ni(PO 3 ) 2 sites being embedded inside amorphous Mo compound matrix (named NiMoO‐P). The undergoes gradual dissolution during followed dynamic equilibrium between deposition matrix. This process promotes continuous exposure insoluble Ni P partially converted from (PO on surface Thus, activated catalyst exhibits excellent performance featuring an extremely high current density 1500 mA cm −2 at rather low overpotential 340 mV, more attractively, ultra‐long for least 1000 h industrial‐applicable 900 . mechanisms especially are attributed formed based DFT calculations quasi‐in Raman spectroscopic monitoring.

Language: Английский

Citations

31
Modulating interfacial charge distribution of Ni2P-NiSe2 by multiple interface engineering for accelerating water splitting with industry-level activity and stability DOI
Jin‐Tao Ren, Lei Chen, Haoyu Wang

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 347, P. 123817 - 123817

Published: April 24, 2024

Language: Английский

Citations

30
Electron Manipulation and Surface Reconstruction of Bimetallic Iron–Nickel Phosphide Nanotubes for Enhanced Alkaline Water Electrolysis DOI Creative Commons
Xinqiang Wang, Jinhao Zhou, Wen‐Gang Cui

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(26)

Published: May 5, 2024

Abstract Developing high‐efficiency and stable bifunctional electrocatalysts for water splitting remains a great challenge. Herein, NiMoO 4 nanowires as sacrificial templates to synthesize Mo‐doped NiFe Prussian blue analogs are employed, which can be easily phosphorized Fe 2x Ni 2(1‐x) P nanotubes (Mo‐FeNiP NTs). This synthesis method enables the controlled etching of that results in unique hollow nanotube architecture. As catalyst, Mo‐FeNiP NTs present lower overpotential Tafel slope 151.3 (232.6) mV at 100 mA cm −2 76.2 (64.7) dec −1 HER (OER), respectively. Additionally, it only requires an ultralow cell voltage 1.47 V achieve 10 overall steadily operate 200 h . First‐principles calculations demonstrate Mo doping effectively adjust electron redistribution sites optimize hydrogen adsorption‐free energy HER. Besides, situ Raman characterization reveals dissolving doped promote rapid surface reconstruction on dynamically (Fe)Ni‐oxyhydroxide layers, serving actual active species OER. The work proposes rational approach addressed by manipulation bimetallic phosphides regulate both OER activity.

Language: Английский

Citations

23
Significantly enhanced OER and HER performance of NiCo-LDH and NiCoP under industrial water splitting conditions through Ru and Mn bimetallic co-doping strategy DOI

Wansen Ma,

Yuhan Zhang, Biyun Wang

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 494, P. 153212 - 153212

Published: June 16, 2024

Language: Английский

Citations

23
The future of alkaline water splitting from the perspective of electrocatalysts-seizing today's opportunities DOI
Shujie Liu, Wei Yan, Mingkui Wang

et al.

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 522, P. 216190 - 216190

Published: Sept. 5, 2024

Language: Английский

Citations

17