Water Spillover to Expedite Two‐Electron Oxygen Reduction

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 5, 2025

Abstract Limited by the activity‐selectivity trade‐off relationship, electrochemical activation of small molecules (like O 2 , N 2, and CO ) rapidly diminishes Faradaic efficiencies with elevated current densities (particularly at ampere levels). Nevertheless, some catalysts can circumvent this restriction in a two‐electron oxygen reduction reaction (2e − ORR), sustainable pathway for activating to hydrogen peroxide (H ). Here we report 2e ORR expedited fluorine‐bridged copper metal–organic framework catalyst, arising from water spillover effect. Through operando spectroscopies, kinetic theoretical characterizations, it demonstrates that under neutral conditions, plays dual role accelerating dissociation stabilizing key * OOH intermediate. Benefiting spillover, catalyst expedite density range 0.1–2.0 A cm −2 both high (99–84.9%) H yield rates (63.17–1082.26 mg h −1 Further, feasibility present system has been demonstrated scaling up unit module cell 25 combination techno‐economics simulations showing production cost strongly dependent on densities, giving lowest price $0.50 kg 2.0 . This work is expected provide an additional dimension leverage systems independent oftraditional rules.

Language: Английский

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Double coordination shell modulation of nitrogen-free atomic manganese sites for enhancing oxygen reduction performance

Chemical Science, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Utilizing double coordination shell modulation, we construct a novel nitrogen-free single-atom manganese configuration catalyst on graphene oxide (Mn–S 1 O 4 G), which exhibits excellent ORR and zinc–air battery performances.

Language: Английский

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Lateral nanoarchitectonics from nano to life: Ongoing challenge in interfacial chemical science

Chemical Science, Journal Year: 2024, Volume and Issue: 15(45), P. 18715 - 18750

Published: Jan. 1, 2024

The construction of functional structures within a single plane still has lot challenges. This review article will help us find new groundbreaking directions in lateral nanoarchitectonics toward advanced material organization.

Language: Английский

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A pH universal ORR catalyst with core-shell ZIF-derived binary cobalt/iron sites for Zn-air batteries

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161543 - 161543

Published: March 1, 2025

Language: Английский

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Assembly-foaming synthesis of hierarchically porous nitrogen-doped carbon supported single-atom iron catalysts for efficient oxygen reduction

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 684, P. 52 - 63

Published: Jan. 11, 2025

Language: Английский

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Activity and stability origin of core-shell catalysts: Unignorable atomic diffusion behavior

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The dynamic evolution of a core–shell catalyst (M@C) is revealed via computations and experiments, showing that metal atoms diffuse to form M–N–C sites, which are highly active capable regenerating for oxygen reduction reactions.

Language: Английский

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Chirality Assisted Triplet Electron Pairing

The Journal of Physical Chemistry Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1629 - 1633

Published: Feb. 5, 2025

Redox processes that involve pairs of electrons are common in nature. Some these reactions oxygen molecules. The understanding the efficiency reduction reaction (ORR), for example, is a challenge since spin forbidden and requires transfer two electrons. Past experimental theoretical studies demonstrated by controlling transferred electrons, it possible to overcome barrier resulting from mismatch between reactants products. In other works, was suggested enhanced if each pair have phase relation, namely, they possess property triplet state. Since nature through chiral systems, we probed chirality affects formation paired with same spin, like model calculations demonstrate enhances probability electron pairing states, even at room temperature. This enhancement originates breaking degeneracy, enabled interaction spins vibrations.

Language: Английский

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P-block cathode electrocatalysts: A critical review of their role and impact on oxygen reduction reaction in fuel cells applications

Journal of Industrial and Engineering Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

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Dynamic Surface Reconstruction Engineers Interfacial Water Structure for Efficient Alkaline Hydrogen Oxidation

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Through dynamic Se leaching and phase transition during HOR process, the obtained Pt–Se catalyst with surface-decorated atoms regulates water structure accelerates OH migration, thereby boosting performance.

Language: Английский

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A review of two electrons oxygen reduction reaction fundamentals to produce hydrogen peroxide over various cobalt-based electrocatalysts

Materials Research Innovations, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 13

Published: Feb. 26, 2025

Language: Английский

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