Hydrodynamics-Controlled Single-Particle Electrocatalysis DOI

Si‐Min Lu,

Mengjie Chen,

Huilin Wen

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(22), P. 15053 - 15060

Published: May 22, 2024

Electrocatalysis is considered promising in renewable energy conversion and storage, yet numerous efforts rely on catalyst design to advance catalytic activity. Herein, a hydrodynamic single-particle electrocatalysis methodology developed by integrating collision electrochemistry microfluidics improve the activity of an system. As proof-of-concept, hydrogen evolution reaction (HER) electrocatalyzed individual palladium nanoparticles (Pd NPs), with development microchannel-based ultramicroelectrodes. The controlled laminar flow enables precise delivery Pd NPs electrode–electrolyte interface one one. Compared diffusion condition, improves number active sites given electrode 2 orders magnitude. Furthermore, forced convection enhancement proton mass transport, thereby increasing electrocatalytic each single NP. It turns out that improvement transport increases rate HER at NPs, thus phase transition without requiring high overpotential. This study provides new avenues for enhancing altering operating conditions, beyond material limitations.

Language: Английский

Multiscale Hierarchical Structured NiCoP Enabling Ampere‐Level Water Splitting for Multi‐Scenarios Green Energy‐to‐Hydrogen Systems DOI
Ding Chen,

Huawei Bai,

Jiawei Zhu

et al.

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(22)

Published: April 28, 2023

Abstract Efficient and stable low‐cost catalysts are seriously lacking for industrial water electrolysis at large‐current‐density. To meet industrial‐scale hydrogen production, fully utilized active sites by a rational structure design is an attractive route. Herein, dynamic microstructure manipulation of bimetallic phosphide NiCoP conducted. Among different microstructures NiCoP, as‐obtained NiCoP‐120 hydrothermal temperature 120 °C, shows special multiscale hierarchical from 3D‐nickel foam substrates, 2D‐nanosheets to 1D‐nanoneedles, which conducive efficient utilization rapid gas release, thus manifesting outstanding electrocatalytic activities stability as required industry. reach current density 10 1000 mA cm −2 the evolution reaction (HER), requires ultra‐low overpotentials 56 247 mV, respectively. Particularly, bifunctional catalyst, it only needs 1.981 V drive 1 A overall splitting can maintain output 600 h, superior almost all reported non‐noble metal catalysts. Moreover, its application prospect in integrated green energy‐to‐hydrogen systems, including sunlight, wind, thermal, lithium cells, well demonstrated. This work provides guiding strategy establishment externally driven water‐splitting production system.

Language: Английский

Citations

127
Ir Nanoparticles Anchored on Metal‐Organic Frameworks for Efficient Overall Water Splitting under pH‐Universal Conditions DOI
Jun Yang,

Yong Shen,

Yamei Sun

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(17)

Published: March 2, 2023

The construction of high-activity and low-cost electrocatalysts is critical for efficient hydrogen production by water electrolysis. Herein, we developed an advanced electrocatalyst anchoring well-dispersed Ir nanoparticles on nickel metal-organic framework (MOF) Ni-NDC (NDC: 2,6-naphthalenedicarboxylic) nanosheets. Benefiting from the strong synergy between MOF through interfacial Ni-O-Ir bonds, synthesized Ir@Ni-NDC showed exceptional electrocatalytic performance evolution reaction (HER), oxygen (OER) overall splitting in a wide pH range, superior to commercial benchmarks most reported electrocatalysts. Theoretical calculations revealed that charge redistribution bridge induced optimization H2 O, OH* H* adsorption, thus leading accelerated electrochemical kinetics HER OER. This work provides new clue exploit bifunctional pH-universal splitting.

Language: Английский

Citations

125
Recent advances of transition‐metal metaphosphates for efficient electrocatalytic water splitting DOI Creative Commons
Yuanyuan Zhang, Jie Wu,

Bingrong Guo

et al.

Carbon Energy, Journal Year: 2023, Volume and Issue: 5(12)

Published: April 25, 2023

Abstract Sustainable production of H 2 through electrochemical water splitting is great importance in the foreseeable future. Transition‐metal metaphosphates (TMMPs) have a three‐dimensional (3D) open‐framework structure and high content P (which exists as PO 3 − ), therefore been recognized highly efficient catalysts for oxygen evolution reaction (OER) bottleneck splitting. Furthermore, TMMPs can also contribute to hydrogen (HER) alkaline neutral media by facilitating dissociation, thus, overall be achieved using this kind material. In timely review, we summarize recent advances synthesis their applications OER HER. We present brief introduction synthetic strategies first two parts. Then, review latest progress made research on OER, HER, water‐splitting electrocatalysts. part, intrinsic activity well current strategy improving catalytic will discussed systematically. Finally, future opportunities remaining challenges application electrocatalysis field.

Language: Английский

Citations

56
D‐Orbital Manipulated Ru Nanoclusters for High‐Efficiency Overall Water Splitting at Industrial‐Level Current Densities DOI
Chenfei Zhao, Jing Wang, Ya Gao

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(7)

Published: Oct. 30, 2023

Abstract Owing to the Pt‐like electrocatalytic capability and moderate price, Ru‐based catalysts are considered as Pt alternatives for electrochemical water splitting. However, they demonstrate limited catalytic performance under industrial‐level current densities. Herein, a novel electrocatalyst with an extremely low amount (0.85 wt.%) of Ru nanoclusters anchored on Cr‐doped Fe‐metal–organic frameworks (Ru@Cr─FeMOF) through robust Cr─O─Ru bond is presented. The study unveils that such architecture facilitates fast electron transfer manipulates highest occupied d orbital d‐band centers sites, favoring both oxygen evolution reaction (OER) hydrogen (HER) catalysis. as‐prepared catalyst performs excellent activity 21 mV@10 mA cm −2 HER 230 mV@50 OER in alkaline solution, realizes water‐splitting at densities (1.72 V@1000 ), surpassing state‐of‐the‐art literatures.

Language: Английский

Citations

55
Hetero‐Interface Manipulation in MoOx@Ru to Evoke Industrial Hydrogen Production Performance with Current Density of 4000 mA cm−2 DOI
Yu Zhang, Chaoqun Ma, Xiaojuan Zhu

et al.

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(32)

Published: July 21, 2023

Abstract Constructing and manipulating hetero‐interfaces for the electrocatalytic hydrogen evolution reaction (HER) is highly desirable, but still poses a significant challenge. Herein, this work adopts facile way to controllably synthesize three different by anchoring ultrafine Ru nanoparticles on various MoO x nanotube (NT) substrates, including 2 , /MoO 3 . Remarkably, @Ru NT displays excellent HER activity with tiny overpotentials of 89 131 mV delivering large current densities 500 1000 mA cm −2 respectively, far surpassing two other hetero‐interfaces, commercial Ru/C, Pt/C catalysts. Impressively, hetero‐interface even achieves an exceptionally density 4000 at overpotential 322 mV. Moreover, presents exceptional stability least 100 h negligible degradation. Both experimental observations theoretical calculations suggest that moderate electron transfer from enhances water dissociation kinetics, optimizes adsorption/desorption, thus simultaneously speeding up kinetics. Furthermore, anion exchange membrane electrolyzer assembled obtained as cathode electrocatalyst, shows attractive durability, low voltage 1.78 V prolonged time period 200

Language: Английский

Citations

54
Emerging Atomically Precise Metal Nanoclusters and Ultrasmall Nanoparticles for Efficient Electrochemical Energy Catalysis: Synthesis Strategies and Surface/Interface Engineering DOI
Mingjie Wu, Fang Dong, Yingkui Yang

et al.

Electrochemical Energy Reviews, Journal Year: 2024, Volume and Issue: 7(1)

Published: March 9, 2024

Language: Английский

Citations

53
Fe‐Regulated Amorphous‐Crystal Ni(Fe)P2 Nanosheets Coupled with Ru Powerfully Drive Seawater Splitting at Large Current Density DOI

Dulan Wu,

Бо Лю, Ruidong Li

et al.

Small, Journal Year: 2023, Volume and Issue: 19(36)

Published: May 5, 2023

Water electrolysis is an ideal method for industrial green hydrogen production. However, due to increasing scarcity of freshwater, it inevitable develop advanced catalysts electrolyzing seawater especially at large current density. This work reports a unique Ru nanocrystal coupled amorphous-crystal Ni(Fe)P2 nanosheet bifunctional catalyst (Ru-Ni(Fe)P2 /NF), caused by partial substitution Fe Ni atoms in , and explores its electrocatalytic mechanism density functional theory (DFT) calculations. Owing high electrical conductivity crystalline phases, unsaturated coordination amorphous couple species, Ru-Ni(Fe)P2 /NF only requires overpotentials 375/295 520/361 mV drive 1 A cm-2 oxygen/hydrogen evolution reaction (OER/HER) alkaline water/seawater, respectively, significantly outperforming commercial Pt/C/NF RuO2 catalysts. In addition, maintains stable performance 600 mA 50 h water seawater, respectively. provides new way design toward industrial-level splitting.

Language: Английский

Citations

51
Advanced noble-metal/transition-metal/metal-free electrocatalysts for hydrogen evolution reaction in water-electrolysis for hydrogen production DOI
Chunxia Wang,

Wenxuan Guo,

Tianle Chen

et al.

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 514, P. 215899 - 215899

Published: May 13, 2024

Language: Английский

Citations

37
Precisely tailoring the d-band center of nickel sulfide for boosting overall water splitting DOI
Haiqing Zhou, Pengfei Li,

Xinyi Xia

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 359, P. 124461 - 124461

Published: July 31, 2024

Language: Английский

Citations

22
Creating High‐entropy Single Atoms on Transition Disulfides through Substrate‐induced Redox Dynamics for Efficient Electrocatalytic Hydrogen Evolution DOI Creative Commons

Zhaoyan Luo,

Yirun Guo,

Changjie He

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(32)

Published: May 16, 2024

The controllable anchoring of multiple metal single-atoms (SAs) into a single support exhibits scientific and technological opportunities, while marrying the concentration-complex multimetallic SAs high-entropy (HESAs) one SAC system remains substantial challenge. Here, we present substrate-mediated formation strategy to successfully fabricate library HESAs on MoS

Language: Английский

Citations

18