Synergistic Effect of Single Atomic Ce Sites and CeO2 Nanoparticles for Boosting Oxygen Reduction Reaction DOI
Han Zhou, Heng Liu,

Yanyan Sun

et al.

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

Published: Nov. 27, 2024

Abstract Fe‐based single‐atomic catalysts (SACs) are considered the most promising non‐precious oxygen reduction reaction (ORR) catalysts, whereas further development is largely hindered due to unavoidable Fenton during ORR process. Herein rare‐metal Ce‐based SACs consisting of Ce sites and CeO 2 nanoparticles constructed by a facile gas‐phase migration strategy. Theoretical calculation results demonstrate that synergistic effect introduction coordination structure change beneficial for decreased energy barrier hydrogenation step * OH over sites, which contributes enhanced performance with positive half‐wave potential 0.88 V in 0.1 m KOH. Moreover, assembled zinc‐air battery can deliver high power density 107 mW cm −2 remarkable long‐term stability 400 cycles at current 5 mA . This work provides new insight design construction rare‐earth‐metal‐based ORR.

Language: Английский

Construction of Fe–In Alloy to Enable High Activity and Durability of Fe–N–C Catalysts DOI

Zhuangzhi Sun,

Yi Zhong,

Heyu Sui

et al.

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

Published: Aug. 12, 2024

Abstract The strategic regulation of the electronic properties and coordination environment single‐atom sites through integration metal nanoclusters emerges as a promising route to enhance oxygen reduction reaction (ORR) performance Fe–N–C materials. Here, catalyst (FeIn–NC) is successfully developed in which materials encapsulate Fe–In alloy nanoclusters, it shows excellent ORR activity durability under alkaline conditions, with high half‐wave potential 0.924 V (vs RHE) zinc–air battery power density 202.1 mW cm −2 , superior commercial Pt/C catalysts. Theoretical calculations unravel that synergistic interaction between FeN 4 site modifies structure charge distribution at site, thereby enhancing electrocatalytic ORR. Potential‐dependent microkinetic modeling (MKM) further discloses mechanisms on identified sites. This work provides viable strategy for improvement via p‐block metal‐based nanoclusters.

Language: Английский

Citations

11
Copper single atom-modulated functionalization of iron clusters on a porous carbon nanosheet for the oxygen reduction reaction DOI

Lingmin Wu,

Yinghua Wang, Chunfeng Shao

et al.

Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Significant functionalization of Fe 5 clusters with CuN 2 O single atom, compared 4 and FeN , in decreasing d-band center weakening the oxygen adsorption.

Language: Английский

Citations

1
The Single Atom Anchoring Strategy: Rational Design of MXene‐Based Single‐Atom Catalysts for Electrocatalysis DOI Open Access
Lixiang Wang, Yuhai Dou, Rong Z. Gan

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

Abstract Single‐atom catalysts (SACs) are a class of with low dosage, cost, and the presence metal atom‐carrier interactions high catalytic activity, which considered to possess significant potential in field electrocatalysis. The most important aspect synthesis SACs is selection suitable carriers. Metal carbides, nitrides, or carbon‐nitrides (MXenes) widely used as new type 2D materials good electrical conductivity tunable surface properties. abundance functional groups vacancy defects on MXenes an ideal anchoring site for single atoms therefore regarded carrier single‐atom loading. In this work, preparation method MXenes, loading mode SACs, characterization catalysts, electrochemical performance described detail, some hot issues current research future directions also summarized. aim work promote development MXene‐based within realm With ongoing innovation, these expected be crucial energy conversion storage solutions.

Language: Английский

Citations

1
Tailoring asymmetric RuCu dual-atom electrocatalyst toward ammonia synthesis from nitrate DOI Creative Commons
Kaiyuan Liu,

Zhiyi Sun,

Xingjie Peng

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: March 4, 2025

Atomically dispersed Ru-Cu dual-atom catalysts (DACs) with asymmetric coordination are critical for sustainable ammonia production via electrochemical nitrate reduction (NO3RR), but their rational synthesis remains challenging. Here, we report a pulsed discharge strategy that injects microsecond pulse current into ruthenium (Ru) and copper (Cu) precursors supported by nitrogen-doped graphene aerogels (NGA). The atomically Ru Cu dual atoms anchor onto nanopore defects of NGA (RuCu DAs/NGA) through explosive decomposition the metal salt nanocrystals. catalyst achieves 95.7% Faraday efficiency 3.1 mg h-1 cm-2 NH3 yield at -0.4 V vs. RHE. In situ studies reveal an RuN2-CuN3 active-site dynamic evolution during NO3RR. Density functional theory calculations demonstrate RuN2CuN3/C structure synergistically optimizes intermediate adsorption reduces energy barriers key steps. enables ultrafast various DACs (e.g., PtCu, AgCu, PdCu, FeCu, CoCu, NiCu) tailored environments, offering general-purpose precise preparation catalysts, which traditionally challenging to synthesize.

Language: Английский

Citations

1
Pyridinic-N Regulated Electron Injection to Modulate *OH Adsorption at Fe–N–C Sites for an Efficient Oxygen Reduction Reaction DOI
Qiaoling Xu, Jin‐Song Hu,

Huiying Yao

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(32), P. 42352 - 42362

Published: July 31, 2024

To enhance the efficiency of oxygen reduction reaction (ORR) catalysts, precise control over adsorption/desorption energy barriers intermediates at atomically dispersed Fe–N–C sites is essential yet challenging. Addressing this, we employed a pyrolysis approach using nitrogen-containing polymer to fabricate Fe single-atom (SA) catalysts embedded in pyridinic-N enriched carbon matrix. This synthesis strategy yielded SAs that demonstrated superior electrochemical ORR performance, evidenced by an impressive half-wave potential 0.941 V and high limiting current density 5.72 mA/cm2. Moreover, when applied homemade Zn–air batteries, this premier catalyst exhibited exceptional specific capacity (720 mAh/gZn), peak power (253 mW/cm2), notable long-term stability. Theoretical insights revealed increased content facilitated efficient electron transfer from N atoms active sites, thus fine-tuning d-band center effectively controlling adsorption barrier *OH species. These mechanisms synergistically improve performance. Crucially, fabrication method shows promise for adaptation other transition metal-based SAs, including Co, Ni, Cu, potentially establishing versatile route developing systems future applications.

Language: Английский

Citations

7
Single-atom catalysts: controlled synthesis and dynamic mechanism in electrochemical oxygen evolution substitution reactions DOI

Qin Zhao,

Rong Z. Gan,

Yiling Ran

et al.

Rare Metals, Journal Year: 2024, Volume and Issue: unknown

Published: June 12, 2024

Language: Английский

Citations

6
Advancing Heterogeneous Organic Synthesis With Coordination Chemistry‐Empowered Single‐Atom Catalysts DOI

Bo‐Chao Ye,

Wenhao Li, Xia Zhang

et al.

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

Published: Sept. 18, 2024

Abstract For traditional metal complexes, intricate chemistry is required to acquire appropriate ligands for controlling the electron and steric hindrance of active centers. Comparatively, preparation single‐atom catalysts much easier with more straightforward effective accesses arrangement control The presence coordination atoms or neighboring functional on supports' surface ensures stability single‐atoms their interactions individual substantially regulate performance Therefore, collaborative interaction between surrounding environment enhances initiation reaction substrates formation transformation crucial intermediate compounds, which imparts significant catalytic efficacy, rendering them a valuable framework investigating correlation structure activity, as well mechanism in organic reactions. Herein, comprehensive overviews both homogeneous complexes reactions are provided. Additionally, reflective conjectures about advancement synthesis also proposed present reference later development.

Language: Английский

Citations

6
Selenate-based heterojunction with cobalt-nickel paired site for electrocatalytic oxidation of 5-hydroxymethylfurfural coupling water splitting to produce hydrogen DOI
Zhengru Yang, Hui Jia, Wangxi Fan

et al.

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 101, P. 156 - 162

Published: Oct. 2, 2024

Language: Английский

Citations

5
PGM-free single atom catalysts for the oxygen reduction reaction in proton exchange membrane fuel cells DOI
Jirong Bai,

Yao Lin,

Jinnan Xu

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(56), P. 7113 - 7123

Published: Jan. 1, 2024

The progress of proton exchange membrane fuel cells (PEMFCs) in the clean energy sector is notable for its efficiency and eco-friendliness, although challenges remain terms durability, cost power density.

Language: Английский

Citations

4
Iron- and nitrogen-rich Enteromorpha-derived dual-atom catalysts modified by clusters for the activation of peroxymonosulfate: Enhanced performance and synergistic mechanism DOI
Chunxue Li, Zhen Tian, Dengcai Zhang

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: 361, P. 131605 - 131605

Published: Jan. 11, 2025

Language: Английский

Citations

0