ZnxMnO2/PPy Nanowires Composite as Cathode Material for Aqueous Zinc‐Ion Hybrid Supercapacitors DOI Creative Commons

Yujia Xue,

Jinghao Huo,

Xin Wang

et al.

Battery energy, Journal Year: 2024, Volume and Issue: 3(6)

Published: Nov. 1, 2024

ABSTRACT Over the past decade, extensive consumption of finite energy resources has caused severe environmental pollution. Meanwhile, promotion renewable sources is limited by their intermittent and regional nature. Thus, developing effective storage conversion technologies devices holds considerable importance. Zinc‐ion hybrid supercapacitors (ZISCs) merge beneficial aspects both batteries, rendering them an exceptionally promising method. As important cathode material for ZISCs, tunnel structure MnO 2 poor conductivity structural stability. Herein, Zn x /PPy (ZMOP) electrode materials are prepared hydrothermal Doping with 2+ used to enhance its stability, while adding polypyrrole improve conductivity. Therefore, fabricated ZMOP presents superb specific capacity (0.1 A g −1 , 156.4 mAh ) remarkable cycle performance (82.6%, 5000 cycles, 0.2 ). Furthermore, assembled aqueous ZISCs PPy‐derived porous carbon nanotube anode obtain a 109 F at 0.1 . power density 867 W kg corresponding can achieve 20 Wh And over cycles maintains 86.4%, which exhibits excellent This suggests that nanowires potential superior‐performance ZISCs.

Language: Английский

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

2
Tuning the local S coordination environment on Ru single atoms to boost the oxygen evolution reaction DOI

Yiling Ran,

Rong Z. Gan,

Qin Zhao

et al.

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

Published: Jan. 1, 2025

A single atom Ru-NiS 2 catalyst with a controlled S-coordination environment for OER was prepared by simple capture strategy. Fine-tuned local S coordination can optimize the electronic structure of Ru active sites.

Language: Английский

Citations

0
Triggering Synergistic Electronic Effect via Electron‐Directed Transfer within PtNPs‐Fe/NC Oxygen Reduction Catalyst for Zinc‐Air Batteries DOI

Quanlei Ma,

Yijing Liao,

Qin Zhao

et al.

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

Published: Feb. 28, 2025

Abstract Rationally tuning Fe‐N‐C catalysts with synergistic nanoparticles for efficient oxygen reduction reaction (ORR) still remains challenging. Here, a nitrogen‐doped carbon‐supported bimetallic catalyst (Pt NPs ‐Fe/NC), combining atomically dispersed sites Pt nanoparticles, is synthesized. Experimental results reveal directional electron transfer between and Fe sites, which induces an effect, effectively modulating the density around sites. The modulation significantly enhances ORR catalytic activity of ‐Fe/NC. As result, ‐Fe/NC displays half‐wave potential 0.901 V (versus RHE) Tafel slope 59 mV dec −1 , surpassing performance commercial Pt/C demonstrating accelerated kinetics. In meantime, maintains excellent durability in terms stability as well. When assembled into liquid zinc‐air batteries (ZABs), delivers peak power 201.48 mW cm −2 specific capacity 809 mAh g . Additionally, ‐Fe/NC‐based flexible ZABs display outstanding discharge cycling stability. This work highlights effectiveness multiscale advancing provides valuable insights construction strategies energy storage applications.

Language: Английский

Citations

0
Ni-Based Electrocatalysts for Urea Oxidation Reaction: Mechanistic Insights and Recent Advancements DOI
Ze Li, Youbin Zheng, Hao Guo

et al.

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: unknown, P. 176591 - 176591

Published: Sept. 1, 2024

Language: Английский

Citations

3
Accurate electrochemical paracetamol sensor for drug control through catalytic roles of single Fe atoms DOI
Mingyue Wang,

Yong Xu,

Shi Chen

et al.

Rare Metals, Journal Year: 2025, Volume and Issue: unknown

Published: April 11, 2025

Language: Английский

Citations

0
ZnxMnO2/PPy Nanowires Composite as Cathode Material for Aqueous Zinc‐Ion Hybrid Supercapacitors DOI Creative Commons

Yujia Xue,

Jinghao Huo,

Xin Wang

et al.

Battery energy, Journal Year: 2024, Volume and Issue: 3(6)

Published: Nov. 1, 2024

ABSTRACT Over the past decade, extensive consumption of finite energy resources has caused severe environmental pollution. Meanwhile, promotion renewable sources is limited by their intermittent and regional nature. Thus, developing effective storage conversion technologies devices holds considerable importance. Zinc‐ion hybrid supercapacitors (ZISCs) merge beneficial aspects both batteries, rendering them an exceptionally promising method. As important cathode material for ZISCs, tunnel structure MnO 2 poor conductivity structural stability. Herein, Zn x /PPy (ZMOP) electrode materials are prepared hydrothermal Doping with 2+ used to enhance its stability, while adding polypyrrole improve conductivity. Therefore, fabricated ZMOP presents superb specific capacity (0.1 A g −1 , 156.4 mAh ) remarkable cycle performance (82.6%, 5000 cycles, 0.2 ). Furthermore, assembled aqueous ZISCs PPy‐derived porous carbon nanotube anode obtain a 109 F at 0.1 . power density 867 W kg corresponding can achieve 20 Wh And over cycles maintains 86.4%, which exhibits excellent This suggests that nanowires potential superior‐performance ZISCs.

Language: Английский

Citations

3