Stability challenges of electrocatalytic oxygen evolution reaction: From mechanistic understanding to reactor design

Joule, Journal Year: 2021, Volume and Issue: 5(7), P. 1704 - 1731

Published: June 16, 2021

Language: Английский

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Transition metal-based bimetallic MOFs and MOF-derived catalysts for electrochemical oxygen evolution reaction

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(4), P. 1897 - 1927

Published: Jan. 1, 2021

The review summarizes transition metal-based bimetallic MOFs and their derived materials as electrocatalytic for the OER. mechanisms of OER probed by DFT calculation andin situcharacterization techniques are also discussed.

Language: Английский

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Durability of anion exchange membrane water electrolyzers

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(6), P. 3393 - 3419

Published: Jan. 1, 2021

Understanding the durability-limiting factors of anion exchange membrane water electrolyzers operating under pure water-, KOH- and K₂CO₃-fed conditions.

Language: Английский

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The promise of hydrogen production from alkaline anion exchange membrane electrolyzers

Nano Energy, Journal Year: 2021, Volume and Issue: 87, P. 106162 - 106162

Published: May 18, 2021

Language: Английский

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Multiscale design of 3D metal–organic frameworks (M−BTC, M: Cu, Co, Ni) via PLAL enabling bifunctional electrocatalysts for robust overall water splitting

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 446, P. 137045 - 137045

Published: May 18, 2022

Language: Английский

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Simultaneously Engineering the Synergistic-Effects and Coordination-Environment of Dual-Single-Atomic Iron/Cobalt-sites as a Bifunctional Oxygen Electrocatalyst for Rechargeable Zinc-Air Batteries

ACS Catalysis, Journal Year: 2023, Volume and Issue: 13(4), P. 2313 - 2325

Published: Jan. 30, 2023

Single-atom introduced carbon nanomaterials show favorable oxygen-reduction reaction (ORR) and oxygen-evolution (OER) performance for renewable energy applications. Nevertheless, the electronic-structure regulation by decorating heterogeneous single-metal-atoms engineering of a single-atom active-sites' microenvironment need to be optimized simultaneously, which is challenging. Herein, we develop an atomic-interfacial-regulation approach fabricate dual single Fe/Co atoms synchronized with both nitrogen/sulfur on defective/graphitic/porous nanosheets (Fe,Co/DSA-NSC). The unsymmetrically organized N S coordinated bridged atomic-sites [Fe-(N2S)/Co-(N2S) moiety] are established prompt charge-transfer, lowering barrier oxygenated reaction-intermediates leading boost reaction-kinetics. As estimated, Fe,Co/DSA-NSC exhibits improved ORR/OER activity higher half-wave potential lower overpotential (E1/2 = 879 mV η10 210 mV, respectively) also good cycling stability toward zinc-air batteries. This discovery hence provides widespread scheme synergistic-principles dual-single-atom catalysts controlled

Language: Английский

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Key components and design strategy of the membrane electrode assembly for alkaline water electrolysis

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(4), P. 1384 - 1430

Published: Jan. 1, 2023

This review presents the state-of-the-art MEAs, including key components and preparation technologies. Especially, overall design strategies of MEAs are discussed to promote high-performance alkaline water electrolysis.

Language: Английский

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Anion Exchange Membrane Water Electrolyzer: Electrode Design, Lab-Scaled Testing System and Performance Evaluation

EnergyChem, Journal Year: 2022, Volume and Issue: 4(5), P. 100087 - 100087

Published: Aug. 4, 2022

Language: Английский

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Bioinspired Framework Catalysts: From Enzyme Immobilization to Biomimetic Catalysis

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(9), P. 5347 - 5420

Published: April 12, 2023

Enzymatic catalysis has fueled considerable interest from chemists due to its high efficiency and selectivity. However, the structural complexity vulnerability hamper application potentials of enzymes. Driven by practical demand for chemical conversion, there is a long-sought quest bioinspired catalysts reproducing even surpassing functions natural As nanoporous materials with surface areas crystallinity, metal-organic frameworks (MOFs) represent an exquisite case how enzymes their active sites are integrated into porous solids, affording heterogeneous superior stability customizable structures. In this review, we comprehensively summarize advances MOFs catalysis, discuss design principle various MOF-based catalysts, such as MOF-enzyme composites embedded sites, explore utility these in different reactions. The advantages enzyme mimetics also highlighted, including confinement, templating effects, functionality, comparison homogeneous supramolecular catalysts. A perspective provided potential solutions addressing current challenges MOF catalysis.

Language: Английский

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Electrochemical integration of amorphous NiFe (oxy)hydroxides on surface-activated carbon fibers for high-efficiency oxygen evolution in alkaline anion exchange membrane water electrolysis

Journal of Materials Chemistry A, Journal Year: 2021, Volume and Issue: 9(24), P. 14043 - 14051

Published: Jan. 1, 2021

Developing practical water-splitting devices that convert earth-abundant solar energy and water into renewable fuel holds promise for a sustainable future; however, its successful commercialization applications is limited by the sluggish kinetics of oxygen evolution reaction (OER). Herein, we developed high-efficiency low-cost three-dimensional (3D) OER electrode via electrochemical integration amorphous NiFeOOH on surface activated carbon fiber paper (CFP). The as-synthesized 3D-a-NiFeOOH/N-CFP exhibits an ultra-low overpotential η(O2) 170 mV to afford 10 mA cm−2 current density, together with Tafel slope 39 per decade, excellent stability under conditions. Apart from synergistic effect, activity a-NiFeOOH/N-CFP attributed unique 3D structure enriched active sites improved electrical conductivity facilitates fast mass transport properties. As result, catalyst achieves high turnover frequency (TOF) 0.99 s−1 (jm) 2527 A g−1 at 270 mV, which outperforms so far reported state-of-the-art catalysts commercial IrO2. Besides, alkaline anion exchange membrane electrolyzer fabricated anode delivers 1 1.88 V long-term durability 240 h. These findings highlight design significant advancements towards utilization applications.

Language: Английский

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