NiFe‐Based Metal–Organic Framework Nanosheets Directly Supported on Nickel Foam Acting as Robust Electrodes for Electrochemical Oxygen Evolution Reaction DOI

Fengzhan Sun,

Guo Wang,

Yongqi Ding

et al.

Advanced Energy Materials, Journal Year: 2018, Volume and Issue: 8(21)

Published: May 9, 2018

Abstract It is of great significance to develop highly efficient and superior stable oxygen evolution reaction (OER) electrocatalysts for upcoming electrochemical conversion technologies clean energy systems. Here, an assembled 3D electrode synthesized by a one‐step solvothermal process using such original OER electrocatalyst. During the process, Ni ions released from foam in acidic solution Fe added exogenously act as metal centers coordinate with terephthalic acid (TPA) organic molecules robust bonds, finally, NiFe‐based metal–organic framework (MOF) nanosheets situ grown on foam, i.e., MIL‐53(FeNi)/NF, are prepared. This binder‐free shows activity high current density (50 mA cm −2 ) at overpotential 233 mV, Tafel slope 31.3 mV dec −1 , excellent stability alkaline aqueous (1 m KOH). discovered that introduction into MIL‐53 structure increases electrochemically‐active areas well sites, accelerated electron transport capability, modulated electronic enhance catalytic performance. Besides, first principles calculations show MIL‐53(FeNi) more favorable foreign atoms' adsorption has increased 3d orbital boosting intrinsic activity. work elucidates promising enriches direct application MOF materials.

Language: Английский

Self‐Supported Transition‐Metal‐Based Electrocatalysts for Hydrogen and Oxygen Evolution DOI
Hongming Sun, Zhenhua Yan, Fangming Liu

et al.

Advanced Materials, Journal Year: 2019, Volume and Issue: 32(3)

Published: April 1, 2019

Abstract Electrochemical water splitting is a promising technology for sustainable conversion, storage, and transport of hydrogen energy. Searching earth‐abundant hydrogen/oxygen evolution reaction (HER/OER) electrocatalysts with high activity durability to replace noble‐metal‐based catalysts plays paramount importance in the scalable application electrolysis. A freestanding electrode architecture highly attractive as compared conventional coated powdery form because enhanced kinetics stability. Herein, recent progress developing transition‐metal‐based HER/OER electrocatalytic materials reviewed selected examples chalcogenides, phosphides, carbides, nitrides, alloys, phosphates, oxides, hydroxides, oxyhydroxides. Focusing on self‐supported electrodes, latest advances their structural design, controllable synthesis, mechanistic understanding, strategies performance enhancement are presented. Remaining challenges future perspectives further development also discussed.

Language: Английский

Citations

1554
Transition Metal Oxides as Electrocatalysts for the Oxygen Evolution Reaction in Alkaline Solutions: An Application-Inspired Renaissance DOI
Fang Song, Lichen Bai, Aliki Moysiadou

et al.

Journal of the American Chemical Society, Journal Year: 2018, Volume and Issue: 140(25), P. 7748 - 7759

Published: May 22, 2018

Water splitting is the essential chemical reaction to enable storage of intermittent energies such as solar and wind in form hydrogen fuel. The oxygen evolution (OER) often considered bottleneck water splitting. Though metal oxides had been reported OER electrocatalysts more than half a century ago, recent interest renewable energy has spurred renaissance studies transition Earth-abundant nonprecious catalysts. This Perspective presents major progress several key areas field theoretical understanding, activity trend, situ operando characterization, active site determination, novel materials. A personal overview past achievements future challenges also provided.

Language: Английский

Citations

1424
Clean and Affordable Hydrogen Fuel from Alkaline Water Splitting: Past, Recent Progress, and Future Prospects DOI
Ziyou Yu, Yu Duan, Xingyu Feng

et al.

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(31)

Published: June 12, 2021

Abstract Hydrogen economy has emerged as a very promising alternative to the current hydrocarbon economy, which involves process of harvesting renewable energy split water into hydrogen and oxygen then further utilization clean fuel. The production by electrolysis is an essential prerequisite with zero carbon emission. Among various technologies, alkaline splitting been commercialized for more than 100 years, representing most mature economic technology. Here, historic development overviewed, several critical electrochemical parameters are discussed. After that, advanced nonprecious metal electrocatalysts that recently negotiating evolution reaction (OER) (HER) discussed, including transition oxides, (oxy)hydroxides, chalcogenides, phosphides, nitrides OER, well alloys, carbides HER. In this section, particular attention paid catalyst synthesis, activity stability challenges, performance improvement, industry‐relevant developments. Some recent works about scaled‐up novel electrode designs, seawater also spotlighted. Finally, outlook on future challenges opportunities offered, potential directions speculated.

Language: Английский

Citations

1421
Chemical and structural origin of lattice oxygen oxidation in Co–Zn oxyhydroxide oxygen evolution electrocatalysts DOI
Zhen‐Feng Huang, Jiajia Song, Yonghua Du

et al.

Nature Energy, Journal Year: 2019, Volume and Issue: 4(4), P. 329 - 338

Published: March 25, 2019

Language: Английский

Citations

1385
Precision and correctness in the evaluation of electrocatalytic water splitting: revisiting activity parameters with a critical assessment DOI
Sengeni Anantharaj, Sivasankara Rao Ede, Kannimuthu Karthick

et al.

Energy & Environmental Science, Journal Year: 2018, Volume and Issue: 11(4), P. 744 - 771

Published: Jan. 1, 2018

To avoid unnoticed errors made by researchers who are working in the area of nanostructured materials for water splitting, correct and precise use evaluation parameters is discussed detail, stating their acceptability validity.

Language: Английский

Citations

1328
Water electrolysis: from textbook knowledge to the latest scientific strategies and industrial developments DOI Creative Commons
Marian Chatenet, Bruno G. Pollet, Dario R. Dekel

et al.

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(11), P. 4583 - 4762

Published: Jan. 1, 2022

Replacing fossil fuels with energy sources and carriers that are sustainable, environmentally benign, affordable is amongst the most pressing challenges for future socio-economic development.

Language: Английский

Citations

1077
Considerations for the scaling-up of water splitting catalysts DOI
Jakob Kibsgaard, Ib Chorkendorff

Nature Energy, Journal Year: 2019, Volume and Issue: 4(6), P. 430 - 433

Published: May 27, 2019

Language: Английский

Citations

1054
Direct Electrolytic Splitting of Seawater: Opportunities and Challenges DOI
Sören Dresp, Fabio Dionigi, Malte Klingenhof

et al.

ACS Energy Letters, Journal Year: 2019, Volume and Issue: 4(4), P. 933 - 942

Published: March 19, 2019

Hot, coastal, hyper-arid regions with intense solar irradiation and strong on- off-shore wind patterns are ideal locations for the production of renewable electricity using turbines or photovoltaics. Given ample access to seawater scarce freshwater resources, such make direct selective electrolytic splitting into molecular hydrogen oxygen a potentially attractive technology. The key catalytic challenge consists competition between anodic chlorine chemistry evolution reaction (OER). This Perspective addresses some aspects related electrolyzers equipped OER (HER) electrocatalysts. Starting from historical background most recent achievements, it will provide insights current state future perspectives topic. also prospects combination electrolysis fuel cell technology (reversible electrolysis) discusses its suitability as combined energy conversion–freshwater

Language: Английский

Citations

894
Atomic-level insight into super-efficient electrocatalytic oxygen evolution on iron and vanadium co-doped nickel (oxy)hydroxide DOI Creative Commons
Jian Jiang, Fanfei Sun, Si Zhou

et al.

Nature Communications, Journal Year: 2018, Volume and Issue: 9(1)

Published: July 17, 2018

It is of great importance to understand the origin high oxygen-evolving activity state-of-the-art multimetal oxides/(oxy)hydroxides at atomic level. Herein we report an evident improvement oxygen evolution reaction via incorporating iron and vanadium into nickel hydroxide lattices. X-ray photoelectron/absorption spectroscopies reveal synergistic interaction between iron/vanadium dopants in host matrix, which subtly modulates local coordination environments electronic structures iron/vanadium/nickel cations. Further, in-situ absorption spectroscopic analyses manifest contraction metal-oxygen bond lengths activated catalyst, with a short vanadium-oxygen distance. Density functional theory calculations indicate that site co-doped (oxy)hydroxide gives near-optimal binding energies intermediates has lower overpotential compared sites. These findings suggest doped distorted geometric disturbed makes crucial contribution trimetallic catalyst.

Language: Английский

Citations

870
In-situ structure and catalytic mechanism of NiFe and CoFe layered double hydroxides during oxygen evolution DOI Creative Commons
Fabio Dionigi, Zhenhua Zeng, Ilya Sinev

et al.

Nature Communications, Journal Year: 2020, Volume and Issue: 11(1)

Published: May 20, 2020

Abstract NiFe and CoFe (MFe) layered double hydroxides (LDHs) are among the most active electrocatalysts for alkaline oxygen evolution reaction (OER). Herein, we combine electrochemical measurements, operando X-ray scattering absorption spectroscopy, density functional theory (DFT) calculations to elucidate catalytically phase, center OER mechanism. We provide first direct atomic-scale evidence that, under applied anodic potentials, MFe LDHs oxidize from as-prepared α-phases activated γ-phases. The OER-active γ-phases characterized by about 8% contraction of lattice spacing switching intercalated ions. DFT reveal that proceeds via a Mars van Krevelen flexible electronic structure surface Fe sites, their synergy with nearest-neighbor M sites through formation O-bridged Fe-M centers, stabilize intermediates unfavorable on pure M-M centers single fundamentally accounting high catalytic activity LDHs.

Language: Английский

Citations

864