Electrocatalytic Applications of Carbon Dots and Their Composites DOI Creative Commons
Shiqin Gao, Jiayi Chen, Yida Zhou

et al.

ChemCatChem, Journal Year: 2024, Volume and Issue: 16(16)

Published: March 11, 2024

Abstract Carbon dots (CDs) have attracted much attention in the field of electrocatalysis due to their many advantages. These reactions are great significance for energy conversion and storage, as well environmental remediation. In this review, we summarize latest achievements electrochemical applications CDs composites, with a focus on environmentally relevant electrocatalysis. We present some representative examples CDs‐based electrocatalysts different analyze catalytic mechanisms factors that affect electrocatalytic performance. Furthermore, conclude challenging issues future perspectives emerging material. This review aims help readers better understand application electrocatalysis, reveal reasons performance, guide further constructing more efficient, stable, green electrocatalysts.

Language: Английский

Mo-doping and construction of the heterostructure between NiFe LDH and NiSx co-trigger the activity enhancement for overall water splitting DOI
Wendi Peng, Wenting Zhang,

Yanli Lu

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 664, P. 980 - 991

Published: March 11, 2024

Language: Английский

Citations

18
Modulating Built‐In Electric Field Via N‐Doped Carbon Dots for Robust Oxygen Evolution at Large Current Density DOI Open Access
Huimin Yang, Jianguo Dong,

Xuena Gao

et al.

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

Published: Jan. 16, 2025

Constructing a built-in electric field (BIEF) within heterostructures has emerged as compelling strategy for advancing electrocatalytic oxygen evolution reaction (OER) performance. Herein, the p-n type nanosheet array heterojunction Ni2P-NCDs-Co(OH)2-NF are successfully prepared. The variation in interaction affinity between nitrogen N-doped carbon dots (NCDs) and Ni/Co induces charge redistribution Co Ni Ni2P-NCDs-Co(OH)2-NF-3 heterostructure, thereby enhancing intensity of BIEF, facilitating electron transfer, markedly improving OER activity. optimized electrocatalyst, Ni2P-NCDs-Co(OH)2-NF-3, demonstrates remarkably low overpotential 389 mV at 500 mA cm-2, alongsides small Tafel slope 65 dec-1, expansive electrochemical active surface area (ECSA), impedance, outstanding stability exceeding 425 h Faradaic efficiency up to 96%. In situ Raman spectroscopy density functional theoretical (DFT) calculations elucidate mechanism, revealing that enhanced BIEF optimizes adsorption energy Co3+ OH- weakened desorption during reaction. work ponieeringly employed NCDs regulator effectively tuning achieving superior performance under large current density, thus charting new pathways development high-efficiency electrocatalysts.

Language: Английский

Citations

10
Low-Level Fe Doping in CoMoO4 Enhances Surface Reconstruction and Electronic Modulation Creating an Outstanding OER Electrocatalyst for Water Splitting DOI

Chengzhuo Li,

Xiaolu Yang,

Y.J. Kou

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Efficient and stable nonprecious metal-based oxygen evolution reaction (OER) electrocatalysts are pivotal for water electrolysis technology. Herein, we reporting an effective strategy fabricating efficient Co-based OER by low-level Fe doping in CoMoO4 to boost surface reconstruction electronic modulation, which resulted excellent electroactivity consequently. Our findings reveal that a mere 5.30% (wt %) of can raise the O 2p band center energy nearer Fermi level, reduce barrier vacancy (VO) formation, significantly enhance electrocatalytic activity. Additionally, fast dissolution Mo initial facilitated form active oxyhydroxide species stabilized Co from leaching. As result, optimized catalyst Fe-CoMoO4-0.2 exhibited low overpotential 276 mV at 10 mA cm-2 1 M KOH operate stably current density 20 least 24 h under splitting conditions. This work provides example regulating structure properties catalysts.

Language: Английский

Citations

1
Self-grown photocatalytic metal-organic frameworks on electrocatalytic NiFe layered double hydroxides as bifunctional photoelectrocatalyst for efficient overall water splitting DOI
Hua Qin, Penglei Xu, Song Lu

et al.

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 633, P. 236398 - 236398

Published: Feb. 4, 2025

Language: Английский

Citations

1
Heterostructure CoS2/MoS2 Nanosheets as a Dual-Active Electrocatalyst for the Oxygen Evolution Reaction DOI
Yang Li, Qixuan Du, Jian Cui

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(4), P. 1954 - 1961

Published: Jan. 12, 2024

Cost-effective and earth-abundant oxygen evolution reaction (OER) electrocatalysts are an incredible research hotspot in numerous energy storage conversion technology fields. Herein, CoS2/MoS2 nanosheets supported by carbon cloth as a dual-active CC@CoS2/MoS2 heterostructure electrocatalyst is prepared through simple solvothermal method. The catalyst demonstrates admirable OER performance 1 M KOH solution with low overpotential of 243 mV at current density 10 mA cm–2 minor Tafel slope 109 dec–1, displaying honorable stability after 1000 cyclic voltammetry (CV) cycles long-term robustness over 60 h. Theoretical calculations further ascertain that the rate-determining step electrocatalytic course *O + OH– → *OOH e– lower barrier 1.49 eV due to heterojunction established CoS2 MoS2, which can promote electrocatalysts. actual identification catalytic mechanism conducive improvement electrocatalysis applications OER.

Language: Английский

Citations

7
Interface Engineering Induced Multi‐Scale Self‐Assembly NiFe‐LDH Heterostructures for High‐Performance Water Electrolysis DOI
Chun Han, Yuan Yuan, Chen Gong

et al.

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

Published: June 7, 2024

Confronted with the pressing issue of energy scarcity, development an economical and potent bifunctional catalyst is paramount importance. We adopt interface engineering strategy to modify surface NiFe-LDH nanoplates O

Language: Английский

Citations

7
Organic-inorganic hybrid interfaces with π-d electron coupling for preventing metal and sulfur leaching toward enhanced oxygen evolution reaction DOI
Yang Liu, Kun Wang, Lei Jin

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 670, P. 288 - 296

Published: May 16, 2024

Language: Английский

Citations

6
Carbon dots-based composites electrocatalysts in hydrogen evolution reaction and oxygen evolution reaction: A mini review DOI
Tian-Ze Li, Yuanyuan Dong, Jianjiao Zhang

et al.

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 77, P. 359 - 372

Published: June 18, 2024

Language: Английский

Citations

6
Revealing Electrochemical Process of Functional Carbon Dots Stabilized Sodium Metal Anode: Co‐Deposition and Strengthened SEI Films DOI Open Access

Hanyu Tu,

Yinghao Zhang,

Jiae Wu

et al.

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

Published: Oct. 10, 2024

Abstract Sodium metal batteries with high theoretical energy density and low redox potential possess vast application prospects. However, the inevitable side reactions between Na anode electrolyte, formation of dendrite during cycling, uneven electric field distribution at interface will lead to a decrease in cycling stability battery. Herein, N S co‐doped carbon dots are employed as electrolyte additives view their quantum size, excellent dispersion, polar surface functional groups. It is found that quantum‐sized core sodiophilic groups N,S‐CDs enable homogenous deposition + involvement solid film. The co‐deposition guarantees uniform sodium plating initial cycle, avoiding routine growth. strength SEI boosted assistance inorganics such 3 2 S, which accelerate transport flux realize rapid charge transfer interface, ensuring reversibility ion plating/stripping. Na||Cu half‐cells achieve coulombic efficiency 99% after 250 cycles under 1.0 mA cm −1 , Na||Na symmetric cells continuously cycle over 1200 h current 1 −2 .

Language: Английский

Citations

5
Interfacial Coupling Engineering Boosting Electrocatalytic Performance of CoFe Layered Double Hydroxide Assembled on N-Doped Porous Carbon Nanosheets for Water Splitting and Flexible Zinc-Air Batteries DOI
Nan Li, Ting Yang, Lijuan Huang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: unknown

Published: Nov. 2, 2023

The disadvantages of layered double hydroxides (LDHs) such as easy stacking, poor inherent conductivity, and limited versatility hinder their application in splitting water zinc–air batteries (ZABs). Interface engineering to regulate the electron distribution LDHs by introducing another component is a way compensate for transport capacity during catalysis. Herein, hierarchical structure synthesized assembling CoFe-LDH nanosheets onto surface N-doped porous carbon (NPC), CoFe-LDH@NPC, using an interface strategy. CoFe-LDH@NPC has high catalytic activity oxygen/hydrogen evolution reaction (OER/HER) with overpotentials 280/100 mV, respectively. two-electrode catalyzed only needs 1.61 V drive current density 10 mA cm–2 60 h. theoretical results show that there electron-deficient/electron-rich between NPC substrate CoFe-LDH@NPC. electrons on coupling are easily transferred, which change adsorption behavior intermediates improves OER HER. In addition, CoFe-LDH@NPC-catalyzed rechargeable flexible ZABs have excellent performance low charge–discharge polarization (0.87 V) long-term stability 65

Language: Английский

Citations

11