Carbon-Layer-Protected CoP/Carbon Nanosheets as Highly Durable Bifunctional Electrocatalysts for Rechargeable Zinc–Air Batteries DOI
Maosong Liu,

Xianhe Lv,

Zhiqiang Mi

et al.

ACS Applied Energy Materials, Journal Year: 2023, Volume and Issue: 6(14), P. 7317 - 7322

Published: June 30, 2023

The commercialization of rechargeable Zn–air batteries (ZABs) relies heavily on the development cost-effective and highly durable bifunctional electrocatalysts that can promote both oxygen reduction reaction (ORR) evolution (OER). Transition-metal phosphides-based carbon (TMPs/C) composites have recently been acknowledged as efficient catalysts, yet successful construction TMPs/C still remains a formidable challenge. Here, we report dots (CDs)-assisted approach to efficiently fabricate CoP/C nanocomposites with fine microstructures acting active electrocatalyst for ORR OER. CDs act stable platform adsorb immobilize Co precursors, obstructing coalescence small CoP particles during pyrolysis eventually ensuring formation microstructure, where carbon-encapsulated dense are uniformly distributed nanosheets (CoP@C/CNSs). ZAB assembled using CoP@C/CNSs electrode expresses excellent performance high power density 180.1 mW cm–2, relatively specific capacity (916 mA h g–1), long cycling life over 80 at 10 cm–2. catalyst such configuration is anticipated provide practical solution production storage clean energy.

Language: Английский

Efficient Homolytic Cleavage of H2O2 on Hydroxyl‐Enriched Spinel CuFe2O4 with Dual Lewis Acid Sites DOI
Lei Tian,

Zi‐Jun Tang,

Le‐Yang Hao

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(17)

Published: March 1, 2024

Abstract Traditional H 2 O cleavage mediated by macroscopic electron transfer (MET) not only has low utilization of , but also sacrifices the stability catalysts. We present a non‐redox hydroxyl‐enriched spinel (CuFe 4 ) catalyst with dual Lewis acid sites to realize homolytic . The results systematic experiments, in situ characterizations, and theoretical calculations confirm that tetrahedral Cu optimal acidity strong delocalization can synergistically elongate O−O bonds (1.47 Å → 1.87 Å) collaboration adjacent bridging hydroxyl (another site). As result, free energy is decreased (1.28 eV 0.98 eV). be efficiently split into ⋅OH induced CuFe without MET, which greatly improves (65.2 %, nearly times than traditional catalysts). system assembled affords exceptional performance for organic pollutant elimination. scale‐up experiment using continuous flow reactor realizes long‐term (up 600 mL), confirming tremendous potential practical applications.

Language: Английский

Citations

6
Cr dopant regulating d-orbital electronic configuration of NiFe spinel oxide to improve oxygen evolution reaction in Zn-air battery DOI
Shihui Liu,

Yaofeng Shi,

Fengqin Tang

et al.

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 987, P. 174248 - 174248

Published: March 23, 2024

Language: Английский

Citations

6
Ternary ZnCo2O4 Nanowire Electrode Materials for High-Capacitance and Flexible Electrochemical Capacitors DOI

Xingjie Sun,

Dongdong Zhang, Ahmad Umar

et al.

ACS Applied Energy Materials, Journal Year: 2023, Volume and Issue: 6(18), P. 9594 - 9601

Published: Aug. 31, 2023

Spinel-structured oxides are promising candidates for supercapacitor electrodes owing to their features of low price and environmental friendliness. However, large-scale applications restricted in view energy density electrical conductivity. In this work, we synthesize wire-like ZnCo2O4 nanomaterials by a facile hydrothermal avenue subsequent calcination process. The prepared samples possess large specific surface area, which is beneficial increasing active sites shortening the ion diffusion channels. as-assembled asymmetric delivers an 64 Wh kg–1 at 2880 W kg–1. And capacitance can be maintained 85% after 10,000 cycles current 2 A g–1. device indicates excellent mechanical stability when bending various angles, revealing its potential application portable storage devices.

Language: Английский

Citations

16
Activating and stabilizing Co sites in CoP for triggering oxygen electrocatalysis in zinc-air battery DOI
Bin Liu, Xin Yu Wang, Rongyue Wang

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 475, P. 146154 - 146154

Published: Sept. 20, 2023

Language: Английский

Citations

16
Carbon-Layer-Protected CoP/Carbon Nanosheets as Highly Durable Bifunctional Electrocatalysts for Rechargeable Zinc–Air Batteries DOI
Maosong Liu,

Xianhe Lv,

Zhiqiang Mi

et al.

ACS Applied Energy Materials, Journal Year: 2023, Volume and Issue: 6(14), P. 7317 - 7322

Published: June 30, 2023

The commercialization of rechargeable Zn–air batteries (ZABs) relies heavily on the development cost-effective and highly durable bifunctional electrocatalysts that can promote both oxygen reduction reaction (ORR) evolution (OER). Transition-metal phosphides-based carbon (TMPs/C) composites have recently been acknowledged as efficient catalysts, yet successful construction TMPs/C still remains a formidable challenge. Here, we report dots (CDs)-assisted approach to efficiently fabricate CoP/C nanocomposites with fine microstructures acting active electrocatalyst for ORR OER. CDs act stable platform adsorb immobilize Co precursors, obstructing coalescence small CoP particles during pyrolysis eventually ensuring formation microstructure, where carbon-encapsulated dense are uniformly distributed nanosheets (CoP@C/CNSs). ZAB assembled using CoP@C/CNSs electrode expresses excellent performance high power density 180.1 mW cm–2, relatively specific capacity (916 mA h g–1), long cycling life over 80 at 10 cm–2. catalyst such configuration is anticipated provide practical solution production storage clean energy.

Language: Английский

Citations

15