Superstructured Carbon with Enhanced Kinetics for Zinc‐Air Battery and Self‐Powered Overall Water Splitting DOI
Jiamin Wei,

Jiali Lou,

Weibo Hu

et al.

Small, Journal Year: 2024, Volume and Issue: 20(24)

Published: Jan. 6, 2024

Abstract The present study proposes a novel engineering concept for the customization of functionality and construction superstructure to fabricate 2D monolayered N‐doped carbon electrocatalysts decorated with Co single atoms or 2 P nanoparticles derived from bimetallic ZnCo‐ZIF precursors. hierarchically porous maximizes exposure accessible active sites, enhances electron/mass transport efficiency, accelerates reaction kinetics simultaneously. Consequently, embedded (Co‐NCS) exhibits remarkable catalytic activity toward oxygen reduction reaction, achieving half‐wave potential 0.886 V versus RHE. Additionally, (Co P‐NCS) demonstrates high both evolution hydrogen delivering low overpotentials 292 mV at 10 mA cm −2 193 respectively. Impressively, when employed in an assembled rechargeable Zn‐air battery, as‐prepared exhibit exceptional performance peak power density 219 mW minimal charge/discharge voltage gap only 1.16 100 . Moreover, cell required drive overall water‐splitting electrolyzer current is merely 1.69 using these catalysts as electrodes.

Language: Английский

Geometric and Electronic Engineering of Atomically Dispersed Copper‐Cobalt Diatomic Sites for Synergistic Promotion of Bifunctional Oxygen Electrocatalysis in Zinc–Air Batteries DOI
Zhijun Li, Siqi Ji, Chun Wang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(25)

Published: April 11, 2023

The development of rechargeable zinc-air batteries is heavily dependent on bifunctional oxygen electrocatalysts to offer exceptional reduction/evolution reaction (ORR/OER) activities. However, the design such with high activity and durability challenging. Herein, a strategy proposed create an electrocatalyst comprised copper-cobalt diatomic sites highly porous nitrogen-doped carbon matrix (Cu-Co/NC) abundantly accessible metal optimal geometric electronic structures. Experimental findings theoretical calculations demonstrate that synergistic effect Cu-Co dual-metal metal-N4 coordination induce asymmetric charge distributions moderate adsorption/desorption behavior intermediates. This exhibits extraordinary electrocatalytic activities in alkaline media, half-wave potential 0.92 V for ORR low overpotential 335 mV at 10 mA cm-2 OER. In addition, it demonstrates acidic (0.85 V) neutral (0.74 media. When applied battery, achieves operational performance outstanding (510 h), ranking as one most efficient reported date. work importance engineering isolated boosting electrochemical energy devices.

Language: Английский

Citations

148
Bifunctional Single Atom Catalysts for Rechargeable Zinc–Air Batteries: From Dynamic Mechanism to Rational Design DOI

Peng Zhang,

Kuo Chen, Jiaye Li

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(35)

Published: June 7, 2023

Ever-growing demands for rechargeable zinc-air batteries (ZABs) call efficient bifunctional electrocatalysts. Among various electrocatalysts, single atom catalysts (SACs) have received increasing attention due to the merits of high utilization, structural tunability, and remarkable activity. Rational design SACs relies heavily on an in-depth understanding reaction mechanisms, especially dynamic evolution under electrochemical conditions. This requires a systematic study in mechanisms replace current trial error modes. Herein, fundamental oxygen reduction is first presented combining situ and/or operando characterizations theoretical calculations. By highlighting structure-performance relationships, rational regulation strategies are particularly proposed facilitate SACs. Furthermore, future perspectives challenges discussed. review provides thorough SACs, which expected pave avenue exploring optimum effective ZABs.

Language: Английский

Citations

101
Rechargeable Zinc–Air Batteries with an Ultralarge Discharge Capacity per Cycle and an Ultralong Cycle Life DOI
Xiongwei Zhong, Yangfan Shao, Biao Chen

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(30)

Published: April 17, 2023

A conventional two-electrode rechargeable zinc-air battery (RZAB) has two major problems: 1) opposing requirements for the oxygen reduction (ORR) and evolution (OER) reactions from catalyst at air cathode; 2) zinc-dendrite formation, hydrogen generation, zinc corrosion anode. To tackle these problems, a three-electrode RZAB (T-RZAB) including hydrophobic discharge cathode, hydrophilic charge zinc-free anode is developed. The decoupled cathodes enable fast ORR OER kinetics, avoid oxidization of catalyst. using tin-coated copper foam that induces growth (002)Zn planes, suppresses evolution, prevents Zn corrosion. As result, T-RZABs have high capacity per cycle 800 mAh cm-2 , low voltage gap between discharge/charge platforms 0.66 V, an ultralong life 5220 h current density 10 mA . large T-RZAB with Ah no obvious degradation after cycling 1000 Finally, pack energy 151.8 Wh kg-1 cost 46.7 US dollars kWh-1 assembled.

Language: Английский

Citations

94
Modulating the Active Hydrogen Adsorption on Fe─N Interface for Boosted Electrocatalytic Nitrate Reduction with Ultra‐Long Stability DOI Creative Commons
Hongxia Luo, Shuangjun Li, Ziyang Wu

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(46)

Published: July 25, 2023

The electrocatalytic reduction of nitrate (NO3- ) to nitrogen (N2 is an environmentally friendly approach for efficient N-cycle management (toward a nitrogen-neutral cycle). However, poor catalyst durability and the competitive hydrogen evolution reaction significantly impede its practical application. Interface-chemistry engineering, utilizing close relationship between surface/interface microenvironment electron/proton transfer process, has facilitated development catalysts with high intrinsic activity physicochemical durability. This study reports synthesis nitrogen-doped carbon-coated rice-like iron nitride (RL-Fe2 N@NC) electrocatalyst excellent nitrate-reduction (high N2 selectivity (≈96%) NO3- conversion (≈86%)). According detailed mechanistic investigations by in situ tests theoretical calculations, strong hydrogenation ability enhanced enrichment system synergistically contribute rapid nitrogen-containing species, increasing reducing occurrence competing hydrogen-evolution side reaction. Moreover, RL-Fe2 N@NC shows stability, retaining good -to-N2 electrocatalysis more than 40 cycles (one cycle per day). paper could guide interfacial design Fe-based composite nanostructures reduction, facilitating shift toward neutrality.

Language: Английский

Citations

94
Zn-based batteries for sustainable energy storage: strategies and mechanisms DOI Creative Commons
Lei Tang,

Haojia Peng,

Jiarui Kang

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(10), P. 4877 - 4925

Published: Jan. 1, 2024

This review systematically summarizes various redox mechanisms in Zn-based batteries and design strategies to improve their electrochemical performance, which provides a reference for future development of high-performance batteries.

Language: Английский

Citations

82
Modulation of Phase Transition in Cobalt Selenide with Simultaneous Construction of Heterojunctions for Highly‐Efficient Oxygen Electrocatalysis in Zinc–Air Battery DOI
Xiaoqin Xu, Xinyu Wang,

Sichen Huo

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: unknown

Published: Oct. 9, 2023

Abstract Phase transformation of cobalt selenide (CoSe 2 ) can effectively modulate its intrinsic electrocatalytic activity. However, enhancing electroconductivity and catalytic activity/stability CoSe still remains challenging. Heterostructure engineering may be feasible to optimize interfacial properties promote the kinetics oxygen electrocatalysis on a ‐based catalyst. Herein, heterostructure consisting nitride (CoN) embedded in hollow carbon cage is designed via simultaneous phase/interface strategy. Notably, phase transition orthorhombic‐CoSe cubic‐CoSe (c‐CoSe accompanied by situ CoN formation realized build c‐CoSe /CoN heterointerface, which exhibits excellent/highly stable activities for reduction/evolution reactions (ORR/OER). local coordination environment increase Co‐Se/N bond lengths. Theoretical calculations show that Co‐site with an electronic state near Fermi energy level main active site ORR/OER.Energetical tailoring d‐orbital structure Co atom incorporation lowers thermodynamic barriers ORR/OER. Attractively, zinc‐air battery ‐CoN cathode displays excellent cycling stability (250 h) charge/discharge voltage loss (0.953/0.96 V). It highlights heterointerface provides option modulating bifunctional activity metal selenides controlled transformation.

Language: Английский

Citations

60
Advanced design strategies for Fe-based metal–organic framework-derived electrocatalysts toward high-performance Zn–air batteries DOI
Yafei Guo,

Shan Zhao,

Nan Zhang

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(5), P. 1725 - 1755

Published: Jan. 1, 2024

This article summarizes the regulation strategies of Fe-based MOFs-derived electrocatalysts for ZABs, and provides a prospect their future development.

Language: Английский

Citations

50
Active site engineering toward atomically dispersed M−N−C catalysts for oxygen reduction reaction DOI
Xiangyu Lu, Peixia Yang, Yongbiao Wan

et al.

Coordination Chemistry Reviews, Journal Year: 2023, Volume and Issue: 495, P. 215400 - 215400

Published: Aug. 21, 2023

Language: Английский

Citations

48
Fe and Mo dual-site single-atom catalysts for high-efficiency wide-pH hydrogen evolution and alkaline overall water splitting DOI

Wenhui Fang,

Ying Wu, Shixian Xin

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 468, P. 143605 - 143605

Published: May 19, 2023

Language: Английский

Citations

44
Carbon‐Dot‐Mediated Highly Efficient Visible‐Driven Photocatalytic Hydrogen Evolution Coupled with Organic Oxidation DOI Open Access
Qitao Chen, Yanhong Liu, Baodong Mao

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(51)

Published: Aug. 29, 2023

Abstract Photocatalytic hydrogen evolution coupled with organic oxidation reaction is a promising alternative to water splitting, where the efficiency limited due weak correlation between charge separation and surface redox reactions. Here, employing nickel phthalocyanine (NiPc) for hole extraction, NiPc‐modified carbon dots (CDs) are combined Cu–In–Zn–S quantum (CIZS QDs) toward profound understanding of electron/hole extraction proton generation reduction. The optimal rate reaches 4.10 mmol g −1 h CIZS/NiPc–CDs l ‐ascorbic acid consumption, 8.10 times that CIZS QDs, which further promoted 11.12 under coextraction Ni 2+ introduction. For benzyl‐alcohol‐oxidation‐coupled H 2 evolution, this strategy shows more dramatic activity enhancement (19.54 times), also appliable methanol‐ or furfuryl‐alcohol‐oxidation coupling systems state‐of‐the‐art activities. Transient photovoltage spectroscopy apparent kinetics analysis indicate, first time, light‐induced electrocatalysis effect consistent Volmer–Heyrovsky process, establishes quasiquantitative basis balancing

Language: Английский

Citations

42