High-Performance and Durable Pd5P2/PdP2 Heterointerface for All-pH Hydrogen Evolution Reactions DOI

Zhenbo Guo,

Ying Cui, Wei Liu

et al.

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(12), P. 9413 - 9420

Published: June 6, 2024

Palladium (Pd) phosphides are considered a kind of highly promising catalytic material as Pt alternative for the hydrogen evolution reaction (HER). However, well-studied Pd phosphide catalysts still suffer from sluggish HER kinetics because inappropriate adsorption strengths and water. Herein, we synthesized Pd5P2/PdP2 heterogeneous nanoparticle catalyst with good performance in both acidic (η10 = 28 mV, η500 150 mV) alkaline electrolytes 31.2 180 mV). Moreover, Pd5P2/PdP2@CNTs exhibit low Tafel slope value 24.3 mV dec–1 high turnover frequency 38.9 s–1 at 100 0.5 M H2SO4, which one best reported state-of-the-art noble metal-based electrocatalysts. In addition, flow-type water electrolyzers [PdP2/Pd5P2@CNTs(−)||S–NiFe-LDH(+)] [PdP2/Pd5P2@CNTs(−)||IrO2(+)] were operated successfully cell voltage 1.71 1.75 V 75 °C, respectively, electrolytes, can also be driven by solar cart without additional energy applied, even an industrial current density 500 mA cm–2. situ Raman temperature-programmed desorption experiments demonstrate that moderate H2O absorption strength faster H2 on PdP2/Pd5P2 heterojunction promote dissociation release H2, thereby improving its performance. This work highlights interface modulation design principle, may inspire development more advanced catalysts.

Language: Английский

Metastabilizing the Ruthenium Clusters by Interfacial Oxygen Vacancies for Boosted Water Splitting Electrocatalysis DOI
Ya Chen, Yaoda Liu, Wenfang Zhai

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(21)

Published: Feb. 2, 2024

Abstract Metal–support interaction (MSI) is witnessed as an essential manner to stabilize active metals and tune catalytic activity for heterogonous water splitting. Kinetically driving the electrolysis (WE) appeals a rational MSI system with coupled electron‐donating/accepting (e‐D/A) characters hydrogen/oxygen evolution reactions (HER/OER). However, metal stabilization effect by will in turn restrict deblocking of e‐D/A properties challenge full electrocatalytic optimization. This study profiles heterostructure featuring metastable Ru clusters on defective NiFe hydroxide (Ru/d‐NiFe LDH) support low‐precious (≈2 wt%) platform efficient WE. It indicated that interfacial oxygen vacancies can deviate stable 4d 5 orbit 2+δ state, regulate d‐band center levels toward facilitated HER/OER processes. Resultantly, Ru/d‐NiFe LDH attains ultralow overpotentials at 10 mA cm −2 Pt‐beyond alkaline HER (18 mV) OER (220 fast kinetics durability. The symmetrical electrolyzer delivers promising voltage 1.49 V 1 m KOH seawater splitting performance. work carries interesting opportunities rationalizing sophisticated metal‐support electrocatalysts through metal‐site metastabilization engineering.

Language: Английский

Citations

96
Designing 3d Transition Metal Cation-Doped MRuOx As Durable Acidic Oxygen Evolution Electrocatalysts for PEM Water Electrolyzers DOI
Panpan Sun, Zelong Qiao,

Xiaobin Dong

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(22), P. 15515 - 15524

Published: May 24, 2024

The continuous dissolution and oxidation of active sites in Ru-based electrocatalysts have greatly hindered their practical application proton exchange membrane water electrolyzers (PEMWE). In this work, we first used density functional theory (DFT) to calculate the energy Ru 3d transition metal-doped MRuOx (M = Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn) evaluate stability for acidic oxygen evolution reaction (OER) screen out ZnRuOx as best candidate. To confirm theoretical predictions, experimentally synthesized these materials found that indeed displays robust OER with a negligible decay η10 after 15 000 CV cycles. Of importance, using anode, PEMWE can run stably 120 h at 200 mA cm–2. We also further uncover mechanism ZnRuOx, i.e., Zn atoms doped outside nanocrystal would form "Zn-rich" shell, which effectively shortened average Ru–O bond lengths strengthen interaction therefore boosted intrinsic OER. short, work not only provides new study paradigm DFT calculations guide experimental synthesis but offers proof-of-concept metal dopants RuO2 stabilizer universal principle develop high-durability catalysts PEMWE.

Language: Английский

Citations

64
Robust Ru‐VO2 Bifunctional Catalysts for All‐pH Overall Water Splitting DOI Open Access

Ziqiang Niu,

Z.W. Lu,

Zelong Qiao

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(9)

Published: Dec. 4, 2023

Designing robust bifunctional catalysts for oxygen evolution reaction (OER) and hydrogen in all-pH conditions overall water splitting (OWS) is an effective way to achieve sustainable development. Herein, a composite Ru-VO

Language: Английский

Citations

56
Rational design of local microenvironment for electrocatalytic water splitting DOI
Xiang Li,

Wangchuan Zhu,

Yanqun Zhang

et al.

Inorganic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(14), P. 4080 - 4106

Published: Jan. 1, 2024

This summary describes the effects of wettability, local pH, interfacial water structure, and electrolyte composition on interface reactant compositions, key intermediate adsorption, reaction kinetics.

Language: Английский

Citations

19
General Modification Strategy on Amorphous Materials to Boost Catalytic Performance DOI

Binbin Jia,

Gui Liu, Baohong Zhang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(44)

Published: May 21, 2024

Abstract Amorphous materials with a high number of unsaturated coordinated dangling bonds exhibits macroscopic homogeneity and isotropy, making it easily modifiable to improve the catalytic properties. At present, several feasible modification strategies for amorphous have been proposed applied multiple fields. This review aims provide comprehensive overview recent research advancements in catalysis. First, general modifying are summarized. Subsequently, potential applications modified electrocatalysis photocatalysis highlighted. Additionally, positive effects various tools on properties elucidated. Finally, summary challenges offer critical perspective further development presented. The primary goal this is systematic understanding how enhance performance stimulate catalysts future.

Language: Английский

Citations

18
Zipper‐Like Interlocked Heterostructure of NiFe Layered Double Hydroxide‐WN for Super‐Stable Oxygen Evolution over 4500 h DOI

Minghui Xing,

Zelong Qiao,

Shaoke Zhu

et al.

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

Published: July 22, 2024

Abstract The nickel‐iron based materials are widely studied as excellent oxygen evolution reaction (OER) electrocatalysts. However, its relatively poor OER stability limits practical applications. Herein, a zipper‐like interlocked heterostructure of NiFe layered double hydroxide (LDH)‐WN is constructed. LDH‐WN exhibits not only ultrahigh activity 228 mV overpotential at current density 50 mA cm −2 , but also extremely long‐term over 4500 h and 550 an industrial ≈350 which ascribed to special structure. Moreover, in situ Raman confirms that the presence WN can efficiently achieve LDH reconstruction slower metal dissolution during OER, therefore boosts stability. DFT calculations reveal increase *O adsorption capability conductivity layer, anchor atoms layer improve energy barrier. In short, this work presents new method constructing Ni‐Fe‐based catalysts, would accelerate application.

Language: Английский

Citations

17
Weakened Hydrophobic Interactions Enhance Bubble Release in Electrocatalytic Water-Splitting DOI Creative Commons
Zhiqing Zhang, Chenyu Qiao, Jingqiao Li

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125019 - 125019

Published: Jan. 1, 2025

Language: Английский

Citations

3
Ru-triggered domino effect constructs a local acid-like environment to achieve the ampere-level current density of a/c-Ru-FeP/IF electrode for alkaline HER DOI
Jie Liu, Xiaoli Sun, Yunmei Du

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125030 - 125030

Published: Jan. 1, 2025

Language: Английский

Citations

2
Single Atom Ru Doped Ni2P/Fe3P Heterostructure for Boosting Hydrogen Evolution for Water Splitting DOI
Xiuhui Li,

ZeYuan Niu,

Mang Niu

et al.

Small, Journal Year: 2024, Volume and Issue: 20(27)

Published: Jan. 29, 2024

Abstract Modulating the chemical composition and structure has been considered as one of most promising strategies for developing high‐efficient water splitting catalysts. Here, a single‐atom Ru doped Ni 2 P/Fe 3 P catalyst is synthesized by introducing dispersed atoms to adjust heterostructure. Single atom provides effective hydrogen evolution reaction (HER) active sites boosting catalytic activities. The with only 0.2 wt.% content exhibits an overpotential 19.3 mV at 10 mA cm −2 , which obviously lower than 146.1 P. Notably, alkaline overall electrolyzer based on Ru‐Ni catalysts achieves cell voltage 1.47 V operates over 600 h superior that benchmark RuO //Pt/C (1.61 V). theoretical calculations further confirm single doping can effectively optimize hydrogen/water adsorption free energy site therefore improve HER activity This work valuable reference design high‐activity durability through double modulation interface‐effect atomic doping.

Language: Английский

Citations

15
Double‐Walled Tubular Heusler‐Type Platinum–Ruthenium Phosphide as All‐pH Hydrogen Evolution Reaction Catalyst Outperforming Platinum and Ruthenium DOI
Yongju Hong, Seong Chan Cho,

Soobean Kim

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(12)

Published: Feb. 2, 2024

Abstract Nanostructured ionic compounds have driven major technological advancements in displays, photovoltaics, and catalysis. Current research focuses on refining the chemical composition of such compounds. In this study, a strategy for creating stoichiometrically well‐defined nanoscale multiple‐cation systems, where atomically precise structure maximizes synergistic cooperation between cations at atomic scale is reported. The unprecedented construction Heusler‐type PtRuP 2 double‐walled nanotubes through sequential anion/cation exchange reactions demonstrated. catalyst exhibits record‐high catalytic performance durability hydrogen evolution reaction (HER) alkaline electrolytes anion‐exchange membrane water electrolyzers. investigations highlight crucial role Pt/Ru dual centers, providing multiple active sites that accelerate HER kinetics within single phosphide material, operation H O activation/dissociation Ru production adjacent Pt sites. These findings open new avenues optimizing compound‐based electrocatalysts, offering platinum‐metal alternatives acidic media.

Language: Английский

Citations

15