A General Sol‐Gel Route to Fabricate Large‐Area Highly‐Ordered Metal Oxide Arrays Toward High‐Performance Zinc‐Air Batteries DOI Open Access

Aoshuang Li,

Yan Tan,

Yijie Wang

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 9, 2024

Abstract A universal method is demonstrated for the fabrication of large‐area highly ordered microporous arrayed metal oxides based on a high‐quality self‐assembly opal template combined with sucrose‐assisted sol‐gel technique. Sucrose as chelating agent optimizes precursor infiltration and regulates both oxide formation melting process polystyrene templates, thus preventing crack during calcination. As result, over 20 element‐based 3DOM arbitrary compositions are successfully prepared. Therein, champion electrocatalyst RuCoO x ‐IO exhibits outstanding bifunctional oxygen activity an ultra‐narrow potential gap 0.598 V, Zn‐air batteries air cathode operates 1380 h under fast‐charging cycling (50 mA cm −2 ), reaches high energy efficiency 69.5% in discharge‐charge cycling. In situ spectroscopy characterizations density functional theory reveal that rational construction Ru─O─Co heterointerface decoupled multi‐active sites mutual coupling RuO 2 Co 3 O 4 facilitate interfacial electron transfer, leading to optimized d ‐band centers active Ru/Co weakened spin interaction between intermediates sites, so enhance adsorption ability * OOH fast ORR kinetics while favoring desorption Ru OER.

Language: Английский

Harnessing Multi‐Asymmetric Engineering: A New Horizon in Bifunctional Oxygen Electrocatalysis with Iron‐Group Atom‐Cluster Nanohybrid DOI
Qiaoling Xu, Lei Zhang,

Luhan Li

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 27, 2024

Abstract Integrating active sites for oxygen reduction and evolution reactions (ORR OER) is pivotal advancing bifunctional electrodes. Addressing the geometric/electronic properties of these essential to disrupt linear scaling relationship between adsorption desorption complex intermediates. Herein, a proof‐of‐concept presented constructing asymmetric trinuclear employing both composition‐ size‐based coupling strategies. These comprise ORR‐active Fe single atom (Fe SA ), OER‐active atomically clustered species AC Ni as modulators. This AC‐SA ‐Ni @N‐doped carbon exhibits excellent catalytic activities, with narrow potential gap 0.661 V an ORR half‐wave 0.931 OER 1.592 at 10 mA cm −2 . The Zn‐air battery this material achieves peak power density 293 mW , specific capacity 748 mAh g Zn −1 remarkable stability. Experimental findings theoretical simulations reveal that induced strong electronic among centers, facilitating charge redistribution optimizing barriers enhances rapid release * OH during efficient transformation from O OOH OER. study presents novel strategy developing robust

Language: Английский

Citations

11
Densely accessible Fe/Co–Nx dual-atom site coupled core–shell Co3Fe7@C as an efficient bifunctional oxygen electrocatalyst for rechargeable zinc–air batteries DOI
Katam Srinivas,

Hesheng Yu,

Zhuo Chen

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(27), P. 16863 - 16876

Published: Jan. 1, 2024

The symmetric electronic structure of an Fe single-atom site catalyst was effectively regulated by incorporating Co–N x sites and core–shell Co 3 7 @C nanoparticles, resulting in high performance towards the ORR Zn–air batteries.

Language: Английский

Citations

8
Advanced development of dual-atom catalysts: From synthesis methods to versatile electrocatalytic applications DOI
Mengyang Zhang, Xiaomin Lu, Zefei Wu

et al.

Journal of Power Sources, Journal Year: 2024, Volume and Issue: 613, P. 234923 - 234923

Published: June 19, 2024

Language: Английский

Citations

4
Dual-atom catalysts with microenvironment regulation for water electrolysis DOI

Ruoqing Xu,

Rongbo Sun,

Hai-Qun Xu

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(39), P. 26316 - 26349

Published: Jan. 1, 2024

Dual-atom catalysts (DACs) have emerged as highly promising and efficient for water electrolysis, primarily due to their distinct dual-atom site effects.

Language: Английский

Citations

4
Synergize Strong and Reactive Metal‐Support Interactions to Construct Sub‐2 nm Metal Phosphide Cluster for Enhanced Selective Hydrogenation Activities DOI
Zemin Chen, Xinyu Li,

Guangyue Xu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 64(1)

Published: Sept. 24, 2024

Strong metal-support interactions (SMSI) are crucial for stabilizing sub-2 nm metal sites, e.g. single atom (M

Language: Английский

Citations

4
Boron, nitrogen co-doped biomass-derived multilayer-graphene encapsulated Co nanoparticles as highly efficient catalysts for the selective hydrodeoxygenation of 5-hydroxymethylfurfural to 2,5-dimethylfuran DOI

Xiaoqing Liao,

Haishuai Cui,

He’an Luo

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 505, P. 159602 - 159602

Published: Jan. 17, 2025

Language: Английский

Citations

0
Synergistic regulation of different coordination shells of iron centers by sulfur and phosphorus enables efficient oxygen reduction in zinc-air batteries DOI

Yi-Han Zhao,

Yu-Rui Ji,

Xi’an Chen

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 688, P. 161 - 171

Published: Feb. 20, 2025

Language: Английский

Citations

0
Design principles of non-noble metal catalysts for high-performance rechargeable Zn-air batteries DOI
Pengxiang Liu, Yaqian Wang, Ruitao Lv

et al.

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104155 - 104155

Published: March 1, 2025

Language: Английский

Citations

0
Tailoring Single Co–N4 Sites Within the Second Coordination Shell for Enhanced Natural Light-Driven Photosynthetic H2O2 Production DOI
Xiao Ge, Xinya Liu,

J. Xu

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: March 22, 2025

Rational regulation of the coordination environment single-atom catalysts (SACs) is a promising yet challenging strategy to enhance their activity. Here, we introduce an O atom into second shell Co–N4 sites via simple thermal treatment, forming Co–N4–ON matrix boost photosynthetic hydrogen peroxide (H2O2) production. This modification significantly alters electronic structure Co site, bringing d-band center closer Fermi energy and elevating conduction band Co–N4–CN its reducing capacity. Density functional theory (DFT) calculations reveal intensified charge redistribution reduced work function in Co–N4–ON, facilitating O2 adsorption. Notably, exhibits lowest adsorption energy, indicating stronger interaction between Co–N4–O O2, which further strengthened by orbital hybridization transfer at interface, leading enhanced activation. The optimized catalyst demonstrates superior reduction capabilities with barrier during H2O2 desorption. Consequently, it achieves production rate 3098.18 μmol g–1 h–1 under neutral conditions, 2.6 times higher than that Co–N4–CN. Moreover, maintains 1967.79 over 10 h continuous flow reactor natural sunlight ambient air, highlighting durability practicality. study underscores crucial role SACs offers valuable insights atomic-level structure–activity relationships, thus contributing advancements design for efficient

Language: Английский

Citations

0
Tungsten doping-Induced electronic structure modulation in NiFe-based metal-organic frameworks for enhanced oxygen evolution reaction DOI

Dazhi Shen,

Wenchang Ke,

Gulimire Balati

et al.

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 69, P. 215 - 222

Published: May 7, 2024

Language: Английский

Citations

3