High‐Density Accessible Iron Single‐Atom Catalyst for Durable and Temperature‐Adaptive Laminated Zinc‐Air Batteries DOI Open Access

Lan Ling,

Yonggan Wu,

Yukui Pei

et al.

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

Published: Feb. 7, 2025

Abstract Designing single‐atom catalysts (SACs) with high density of accessible sites by improving metal loading and utilization is a promising strategy to boost the catalytic activity, but remains challenging. Herein, site (SD) iron SAC (D‐Fe‐N/C) 11.8 wt.% Fe‐loading reported. The in situ scanning electrochemical microscopy technique attests that active SD D‐Fe‐N/C reach as 1.01 × 10 21 g −1 79.8%, respectively. Therefore, demonstrates superior oxygen reduction reaction (ORR) activity terms half‐wave potential 0.918 V turnover frequency 0.41 e s . excellent ORR property also demonstrated liquid zinc‐air batteries (ZABs), which exhibit peak power 306.1 mW cm −2 an ultra‐long cycling stability over 1200 h. Moreover, solid‐state laminated ZABs prepared presetting air flow layer show specific capacity 818.8 mA h , 520 h, wide temperature‐adaptive from −40 60 °C. This work not only offers possibilities metal‐loading for exploring efficient SACs, provides strategies device structure design toward advanced ZABs.

Language: Английский

Aqueous Zinc‐Iodine Batteries: From Electrochemistry to Energy Storage Mechanism DOI
Hui Chen,

Xiang Li,

K. Fang

et al.

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(41)

Published: Sept. 1, 2023

Abstract As one of the most appealing energy storage technologies, aqueous zinc‐iodine batteries still suffer severe problems such as low density, slow iodine conversion kinetics, and polyiodide shuttle. This review summarizes recent development Zn─I 2 with a focus on electrochemistry underlying working mechanism. Starting from fundamentals batteries, zinc anode, well scientific existing in are introduced. The concrete strategies dealing cathode, electrolyte, separator challenges confronting elaborated well. To deepen understanding important findings mechanism different summarized detail. Finally, some guidelines directions for also provided. is expected to battery promote their practical applications future.

Language: Английский

Citations

115
High‐Density Atomic Fe–N4/C in Tubular, Biomass‐Derived, Nitrogen‐Rich Porous Carbon as Air‐Electrodes for Flexible Zn–Air Batteries DOI
Chuanlai Jiao, Zian Xu, Jingze Shao

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(20)

Published: Feb. 22, 2023

Abstract Developing low‐cost single‐atom catalysts (SACs) with high‐density active sites for oxygen reduction/evolution reactions (ORR/OER) are desirable to promote the performance and application of metal–air batteries. Herein, Fe nanoparticles precisely regulated single atoms supported on waste biomass corn silk (CS) based porous carbon ORR OER. The distinct hierarchical structure hollow tube morphology critical boosting ORR/OER through exposing more accessible sites, providing facile electron conductivity, facilitating mass transfer reactant. Moreover, enhanced intrinsic activity is mainly ascribed high (4.3 wt.%) loading content in as‐synthesized catalyst.Moreover, ultra‐high N doping (10 can compensate insufficient OER conventional FeNC catalysts. When as‐prepared assembled as air‐electrodes flexible Zn–air batteries, they perform a peak power density 101 mW cm −2 , stable discharge–charge voltage gap 0.73 V >44 h, which shows great potential Zinc–air battery. This work provides an avenue transform renewable materials into bifunctional electrocatalysts structure.

Language: Английский

Citations

87
Mesoporous carbon spheres with programmable interiors as efficient nanoreactors for H2O2 electrosynthesis DOI Creative Commons
Qiang Tian, Lingyan Jing,

Hongnan Du

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Feb. 1, 2024

Abstract The nanoreactor holds great promise as it emulates the natural processes of living organisms to facilitate chemical reactions, offering immense potential in catalytic energy conversion owing its unique structural functionality. Here, we propose utilization precisely engineered carbon spheres building blocks, integrating micromechanics and controllable synthesis explore their functionalities two-electron oxygen reduction reactions. After conducting rigorous experiments simulations, present compelling evidence for enhanced mass transfer microenvironment modulation effects offered by these mesoporous hollow spheres, particularly when possessing a suitably sized architecture. Impressively, pivotal achievement lies successful screening potent, selective, durable reaction catalyst direct medical-grade hydrogen peroxide disinfectant. Serving an exemplary demonstration engineering screening, this work highlights various well-designed carbon-based nanoreactors extensive applications.

Language: Английский

Citations

54
Identification and Understanding of Active Sites of Non‐Noble Iron‐Nitrogen‐Carbon Catalysts for Oxygen Reduction Electrocatalysis DOI

Zhili Yang,

Yizhe Chen, Shiming Zhang

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(26)

Published: March 14, 2023

Non‐noble iron‐nitrogen‐carbon (Fe‐N‐C) catalysts have been explored as one type of the most promising alternatives precious platinum (Pt) in catalyzing oxygen reduction reaction (ORR). However, their catalytic ORR activity and stability still cannot meet requirement practical applications. Active sites such are key factors determining performance. This review gives a critical overview on identification understanding active sties non‐pyrolytic pyrolytic Fe‐N‐C terms design strategies, synthesis, characterization, functional mechanisms performance validation. The diversity complexity that greatly dominate progress include Fe‐containing (Fe‐based nanoparticles single‐atom Fe‐species) metal‐free (heteroatoms doping defects). Meanwhile, synergistic effects also discussed this with emphasis interaction among multiple sites. Although substantial endeavors devoted to develop efficient catalysts, some challenges remain. To facilitate further research toward applications, perspectives prospected aspects innovative synthesis methods, active‐sites modulation high‐resolution ex situ/in situ/operando characterization techniques, theoretical calculations, so on. may provide guideline for identifying developing high‐performance catalysts.

Language: Английский

Citations

53
Modulating Electronic Structures of Iron Clusters through Orbital Rehybridization by Adjacent Single Copper Sites for Efficient Oxygen Reduction DOI Open Access

Chunhong Qi,

Haoyu Yang, Ziqi Sun

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(39)

Published: July 24, 2023

The atom-cluster interaction has recently been exploited as an effective way to increase the performance of metal-nitrogen-carbon catalysts for oxygen reduction reaction (ORR). However, rational design such and understanding their structure-property correlations remain a great challenge. Herein, we demonstrate that introduction adjacent metal (M)-N4 single atoms (SAs) could significantly improve ORR well-screened Fe atomic cluster (AC) catalyst by combining density functional theory (DFT) calculations experimental analysis. DFT studies suggest Cu-N4 SAs act modulator assist O2 adsorption cleavage O-O bond on AC active center, well optimize release OH* intermediates accelerate whole kinetic. depositing with nitrogen doped mesoporous carbon nanosheet are then constructed through universal interfacial monomicelles assembly strategy. Consistent theoretical predictions, resultant exhibits outstanding half-wave potential 0.92 eV in alkali 0.80 acid, high power 214.8 mW cm-2 zinc air battery. This work provides novel strategy precisely tuning atomically dispersed poly-metallic centers electrocatalysis.

Language: Английский

Citations

53
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
Regulating the Fe-spin state by Fe/Fe3C neighbored single Fe-N4 sites in defective carbon promotes the oxygen reduction activity DOI
Guijun Li, Jianping Liu,

Chuanlan Xu

et al.

Energy storage materials, Journal Year: 2023, Volume and Issue: 56, P. 394 - 402

Published: Jan. 20, 2023

Language: Английский

Citations

47
Hydrogen-bond-mediated micelle aggregating self-assembly towards carbon nanofiber networks for high-energy and long-life zinc ion capacitors DOI
Yang Qin, Ziyang Song,

Ling Miao

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 470, P. 144256 - 144256

Published: June 20, 2023

Language: Английский

Citations

47
Single-Atom-Based Oxygen Reduction Reaction Catalysts for Proton Exchange Membrane Fuel Cells: Progress and Perspective DOI
Jianmin Yu, Chenliang Su, Lu Shang

et al.

ACS Nano, Journal Year: 2023, Volume and Issue: 17(20), P. 19514 - 19525

Published: Oct. 9, 2023

Single-atom catalysts (SACs) are regarded as promising non-noble-metal alternatives for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells due to their high atom utilization efficiency and excellent catalytic properties. However, insufficient long-term stability issues of SACs under working conditions seriously hinder practical application. In this perspective, recent progress with optimized ORR activity is first reviewed. Then, possible degradation mechanisms process effective strategies improving durability summarized. Finally, some challenges opportunities proposed develop stable single-atom-based electrocatalysts future.

Language: Английский

Citations

46
Advanced Architectures of Air Electrodes in Zinc–Air Batteries and Hydrogen Fuel Cells DOI Open Access

Longbin Li,

Xiannong Tang,

Bing Wu

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(13)

Published: Oct. 12, 2023

The air electrode is an essential component of air-demanding energy storage/conversion devices, such as zinc-air batteries (ZABs) and hydrogen fuel cells (HFCs), which determines the output power stability devices. Despite atom-level modulation in catalyst design being recently achieved, electrodes have received much less attention, causing a stagnation development equipment. Herein, evolution for ZABs HFCs from early stages to current requirements reviewed. In addition, operation mechanism corresponding electrocatalytic mechanisms are summarized. particular, by clarifying interfaces at different scales, several approaches improve rechargeable reviewed, including innovative structures bifunctional oxygen catalysts. Afterward, operating proton-exchange-membrane (PEMFCs) anion-exchange-membrane (AEMFCs) explained. Subsequently, strategies employed enhance efficiency membrane assembly (MEA) PEMFCs AEMFCs, respectively, highlighted discussed detail. Last, prospects considered discussing main challenges. aim this review facilitate industrialization HFCs.

Language: Английский

Citations

45