Atomically Dispersed High-Active Site Density Copper Electrocatalyst for the Reduction of Oxygen DOI Open Access
Tao Jiang, Hongli Jiang,

Weibin Wang

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(20), P. 5030 - 5030

Published: Oct. 15, 2024

Enlarging the M-Nx active-site density is an effective route to enhance ORR performance of M-N-C catalysts. In this work, a single-atom catalyst Cu-N@Cu-N-C with enlarged Cu-N

Language: Английский

Recent progress in ZIF nanocomposite materials for wastewater pollutant in aqueous solution: A mini-review DOI

Maryam Chafiq,

Abdelkarim Chaouiki, Aisha H. Al-Moubaraki

et al.

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: 184, P. 1017 - 1033

Published: Feb. 15, 2024

Language: Английский

Citations

10
Amidoximated‐Wood Derived Carbons as Advanced Self‐Standing Electrodes for Supercapacitor and Water Splitting DOI
Liu‐Liu Shen,

Xiangzun Dong,

Wei Wang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(34)

Published: May 9, 2024

Abstract Wood‐derived carbons demonstrate great potential as self‐standing electrodes in energy storage/conversion applications, including supercapacitors and water‐splitting devices. However, the key challenge remains rational customization of surface functionalities for optimized performance. This study introduces an innovative approach to wood‐derived with tailored nitrogen metal functionalities. In contrast traditional impregnation techniques, which offer limited precision modification, this entails intentional attachment amidoxime groups wood substrates. These serve sources, create abundant anchoring sites ions due chelation between metals. The resulting feature uniform high dispersion functionalities, along a distinctive hierarchical porosity combining interconnected open channels mesopores. As proof‐of‐concept, different metals are incorporated (i.e., Mn, Co, Ni) into amidoximated‐wood precursors, showcase excellent performance both applications. Leveraging specific chelating ability toward ions, strategy holds generic systematically tailoring carbon‐based materials various electrochemical processes.

Language: Английский

Citations

9
In situ construction of MOF derived CoNC anchored on N-doped carbon xerogel sphere as efficient bifunctional ORR/OER electrocatalyst for Zn-air batteries DOI Creative Commons
Hong Jin, Dong‐Tsamn Lin, Laihong Zhou

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 28, 2025

Electrocatalytic materials with dual functions of oxygen reduction reaction (ORR) and evolution (OER) have received increasing attention in the field zinc-air batteries (ZABs) research. In this study, bifunctional CoNC@NCXS catalysts were prepared by anchoring Co N co-doped CoNC on N-doped carbon xerogel sphere (NCXS) based spatially confined domain effect in-situ doping technique. exhibited excellent ORR/OER activity alkaline electrolytes ORR onset potential 0.99 V, half-wave (E1/2) 0.78 V at 10 mA cm−2 OER overpotential 360 mV cm−2. These catalytic activities derived from constructing composite active structures enhancing electrocatalytic efficiency. The ZAB assembled catalyst had a discharge specific capacity 710 mAh g−1 current density cm−2, which was superior to that Pt/C&RuO2 catalyst-assembled battery (667 g−1). After running for 150 h, charge efficiency decreased only 12.8%, confirmed stability catalyst. free energy diagrams showed that, has lower barriers higher than key steps. This study provides new perspective structural design highly storage conversion.

Language: Английский

Citations

1
Composition regulation of transition metal electrocatalysts derived from zeolite imidazolate frameworks for Zn-air batteries DOI
Yafei Guo, Lulu Zhao, Nan Zhang

et al.

Energy storage materials, Journal Year: 2024, Volume and Issue: 70, P. 103556 - 103556

Published: June 1, 2024

Language: Английский

Citations

5
Toward selective electrooxidation of HMF to FDCA: Suppressing non-Faradaic transformations via low temperature electrolysis DOI
Guirong Zhang, Zhiyuan Sun, Xinyu Liu

et al.

Journal of Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 116002 - 116002

Published: Feb. 1, 2025

Language: Английский

Citations

0
Pyrolytic Transformation of Zn-TAL Metal–Organic Framework into Hollow Zn–N–C Spheres for Improved Oxygen Reduction Reaction Catalysis DOI Creative Commons

Gulnara Yusibova,

John C. Douglin, Iuliia Vetik

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: 10(15), P. 15280 - 15291

Published: April 12, 2025

Metal-organic frameworks (MOFs) are promising precursors for creating metal-nitrogen-carbon (M-N-C) electrocatalysts with high performance, though maintaining their structure during pyrolysis is challenging. This study examines the transformation of a Zn-based MOF into an M-N-C electrocatalyst, focusing on preservation carbon framework and prevention Zn aggregation pyrolysis. A highly porous Zn-N-C electrocatalyst derived from Zn-TAL (where TAL stands TalTech-UniTartu Alliance Laboratory) was synthesized via optimized pyrolysis, yielding notable electrocatalytic activity toward oxygen reduction reaction (ORR). Scanning electron microscopy (SEM) X-ray diffraction spectroscopy (XRD) analyses confirmed that preserved its integrity remained free metal aggregates, even at elevated temperatures. Rotating disc electrode (RDE) tests in alkaline solution showed demonstrated ORR par commercial Pt/C electrocatalysts. In anion-exchange membrane fuel cell (AEMFC), material pyrolyzed 1000 °C exhibited peak power density 553 mW cm-2 60 °C. work demonstrates excellent precursor forming hollow structures, making it high-performance Pt-free cells.

Language: Английский

Citations

0
Rational construction of hybrid silica encapsulated ZIFs-derived carbons in mixed matrix membranes for enhanced carbon capture DOI
Run Li, Tianyang Zhao,

Chengbo Jia

et al.

Journal of Membrane Science, Journal Year: 2025, Volume and Issue: 728, P. 124131 - 124131

Published: April 23, 2025

Language: Английский

Citations

0
Synthesis and electrochemical investigation of Cu@FeLn (Eu, Sm, and Gd)-N-C composites for energy conversion and storage applications DOI
Seyed Ali Mousavi, Mehdi Mehrpooya, Mohammad Reza Ganjali

et al.

Materials Chemistry and Physics, Journal Year: 2024, Volume and Issue: 320, P. 129394 - 129394

Published: April 30, 2024

Language: Английский

Citations

0
Understanding the evolution of molybdenum-nitrogen doped carbon with long-term durability for efficient oxygen reduction reaction DOI
Xingyu Luo, Bingbao Mei,

Ru Feng

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 155778 - 155778

Published: Sept. 1, 2024

Language: Английский

Citations

0
Atomically Dispersed High-Active Site Density Copper Electrocatalyst for the Reduction of Oxygen DOI Open Access
Tao Jiang, Hongli Jiang,

Weibin Wang

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(20), P. 5030 - 5030

Published: Oct. 15, 2024

Enlarging the M-Nx active-site density is an effective route to enhance ORR performance of M-N-C catalysts. In this work, a single-atom catalyst Cu-N@Cu-N-C with enlarged Cu-N

Language: Английский

Citations

0