Carbon Dots-Mediated 0D/2D Interface Engineering in Ni3S2 Nanosheets for Efficient Electrocatalytic Urea Oxidation Coupled with Hydrogen Evolution DOI
Yanhong Liu,

Chunxing Zhou,

Dongxu Zhang

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(22), P. 26145 - 26154

Published: Nov. 12, 2024

The urea oxidation reaction (UOR) has gained significant attention as an alternative to the oxygen evolution (OER) for reducing energy consumption during simultaneous hydrogen production and degradation of urea. However, developing efficient electrocatalysts UOR remains challenging due sluggish intrinsic kinetics involved in six-electron process. In this study, we report use carbon-dot-modified ultrathin Ni3S2 nanosheets on nickel foam (Ni3S2–CDs@NF) with a quasi-parallel structure urea-assisted electrocatalytic (HER). zero-dimensional/two-dimensional (0D/2D) Ni3S2–CDs@NF catalyst exhibit high bifunctional catalytic activities potential 88 mV HER 1.35 V (vs RHE) at current density 10 mA cm–2. By incorporating into symmetrical electrolytic cell, low cell voltages 1.67 1.81 were acquired densities 50 100 cm–2 HER||UOR, which are 110 280 lower than those nonreal HER||OER system, respectively. Further electrochemical tests demonstrated that 0D/2D heterointerface between CDs maximized exposure surface-active sites while enhancing electron transfer rates kinetics. This study not only offers insights carbon-dot-based electrolysis, but also holds applications conversion wastewater treatment.

Language: Английский

Harnessing Biological Insights: Integrating Proton Regulation, pH Buffer and Zincophility for Highly Stable Zn Anode DOI
Guolang Zhou, Wenhao Ding, Yu Guan

et al.

Nano Energy, Journal Year: 2024, Volume and Issue: 132, P. 110398 - 110398

Published: Oct. 22, 2024

Language: Английский

Citations

4
Polydentate Ligand Stabilizes Electrolyte and Interface Layer for Anti‐Corrosion and Selective‐Deposited Zn Metal Aqueous Batteries DOI Open Access
Hong Tan, Kai Lü, Guocai Yuan

et al.

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

Published: Feb. 18, 2025

Abstract Zinc anode suffers from tough issues such as dendrite, corrosion, and hydrogen evolution, which lead to premature battery failure thus restrict the practical application of aqueous zinc‐metal batteries (ZMABs). Herein, a polydentate‐ligand tactic is introduced reconstruct solvation structure, improve corrosion resistance, trigger selective dendrite‐free deposition via β‐Alanyl‐L‐histidine (AH). With abundant amino, amide, carboxyl, imidazolyl groups, AH shows chelation effect, partially substitutes solvated SO 4 2− enters Zn 2+ sheath facilitate desolvation. Those groups also increase strong H‐bond proportion electrolyte, stabilizing water suppressing evolution reactions. Moreover, with multisite coordination, preferentially adsorbs on Zn(002) induce stable functional C, N, O, S‐rich solid‐electrolyte interphase zincophilic hydrophobic properties. It homogenizes both electric field concentration guides preferential growth along (002), realizing anode. As result, obtained electrolyte exhibits high CE 99.28%, extended stability over 6000 h, long lifespan 1000 cycles for Zn//MnO 2 batteries. This work offers novel design strategy additive toward stabilization anodes ZMABs.

Language: Английский

Citations

0
An eco-friendly and biodegradable chitosan fiber-based separator with ion transport modulation towards highly reversible Zn metal anodes DOI
Linhao Li, Kun Zhang, Benhua Ma

et al.

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 114, P. 115884 - 115884

Published: Feb. 20, 2025

Language: Английский

Citations

0
Machine learning-assisted benign transformation of three zinc states in zinc ion batteries DOI Creative Commons
Jianbo Dong, Guolang Zhou, Wenhao Ding

et al.

Energy & Environmental Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

A machine-learning-designed cerium-iron MOF layer enhances Zn anode stability, achieving over 4300 hours at 1 mA cm −2 and 99.8% coulombic efficiency 1400 cycles 2 , providing a cost-effective protective strategy.

Language: Английский

Citations

0
An aqueous proton battery under alkaline electrolyte DOI
Shengyang Dong, Hang Ren,

Jinyao Yang

et al.

Energy storage materials, Journal Year: 2024, Volume and Issue: 74, P. 103888 - 103888

Published: Nov. 5, 2024

Language: Английский

Citations

1
Carbon Dots-Mediated 0D/2D Interface Engineering in Ni3S2 Nanosheets for Efficient Electrocatalytic Urea Oxidation Coupled with Hydrogen Evolution DOI
Yanhong Liu,

Chunxing Zhou,

Dongxu Zhang

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(22), P. 26145 - 26154

Published: Nov. 12, 2024

The urea oxidation reaction (UOR) has gained significant attention as an alternative to the oxygen evolution (OER) for reducing energy consumption during simultaneous hydrogen production and degradation of urea. However, developing efficient electrocatalysts UOR remains challenging due sluggish intrinsic kinetics involved in six-electron process. In this study, we report use carbon-dot-modified ultrathin Ni3S2 nanosheets on nickel foam (Ni3S2–CDs@NF) with a quasi-parallel structure urea-assisted electrocatalytic (HER). zero-dimensional/two-dimensional (0D/2D) Ni3S2–CDs@NF catalyst exhibit high bifunctional catalytic activities potential 88 mV HER 1.35 V (vs RHE) at current density 10 mA cm–2. By incorporating into symmetrical electrolytic cell, low cell voltages 1.67 1.81 were acquired densities 50 100 cm–2 HER||UOR, which are 110 280 lower than those nonreal HER||OER system, respectively. Further electrochemical tests demonstrated that 0D/2D heterointerface between CDs maximized exposure surface-active sites while enhancing electron transfer rates kinetics. This study not only offers insights carbon-dot-based electrolysis, but also holds applications conversion wastewater treatment.

Language: Английский

Citations

0