Recent Advances of High-entropy Materials as Electrocatalysts for Rechargeable Zn-Air Batteries

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: 1011, P. 178435 - 178435

Published: Jan. 1, 2025

Language: Английский

---

Unveiling the potential of high-entropy materials toward high-energy metal batteries based on conversion reactions: synthesis, structure, properties, and beyond

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104054 - 104054

Published: Jan. 1, 2025

Language: Английский

---

Collaborative Optimization of Microwave Absorption and Thermal Properties of FeCo‐Glass Dual Shell Hollow Spheres Enabled by Alloying‐Induced Special Distribution Control

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

Published: Feb. 25, 2025

Abstract Hollow microsphere absorbents hold great potential for lightweight and multi‐band compatible design due to their inherent low density thermal conductivity, but it remains a challenge rationally control the microstructures achieve an optimal balance of density, high mechanical strength, impedance matching, attenuation ability, performance. In this work, bimetallic alloys glass are selected as model materials functional supporting shells construct yet robust hollow microspheres. The rational highly efficient realization composition miscibility alloy first emphasized. An in‐depth investigation is conducted on effects metal type component compatibility microstructure structural units (SU), further electromagnetic performances. results confirm necessity effectiveness regulating integrity networks via alloying‐induced migration aggregation behavior control. optimized product exhibits comprehensive advantages being simultaneously thin (1.69 mm), wide (5.20 GHz), light (0.81 g cm −3 ), strong (−23.8 dB), strength (91.87% survival rate at 20 MPa) conductivity (0.063 W m −1 K indicating excellent radar‐infrared stealth capabilities stability.

Language: Английский

---

Orderly Stacked “Tile” Architecture with Single‐Atom Iron Boosts Oxygen Reduction in Liquid and Solid‐State Zn–Air Batteries

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

Published: March 23, 2025

Abstract Oxygen reduction reaction plays a crucial role in energy‐related devices. However, four‐electron transfer process involved this is usually constrained by sluggish kinetics. Single atomic (SA) Fe catalysts have attracted extensive attention due to the high atom utilization, yet impact of support architecture on accelerating has been largely overlooked. Inspired edge‐rich and ordered tile that facilitates rainwater runoff, an orderly stacked “tile” carbon with highly dispersed SA doped S prepared through morphology‐persistent conversion new metal–organic framework assembly. The catalyst exhibits higher half‐wave potential 0.91 V 0.1 M KOH, when compared Pt/C atoms lamellar carbon. This because kinetics accelerated while weakens Fe–O interaction, decreases *OH binding strength. Importantly, catalyst, working at air cathodes, powers liquid solid‐state Zn–air batteries show high‐power density remarkable stability, can effectively charge mobile phone. work not only provides effective but also highlights importance for developing advanced catalysts.

Language: Английский

---

Enhanced Tri‐Atom Ru‐Based Catalyst for Hydrogen Evolution Reaction via Rapid Pyrolysis of Precursor

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

Published: March 27, 2025

Abstract Atomically precise supported nanocluster catalysts (APSNCs), with well‐defined metal active sites, unique geometrical and electronic structures metal–metal bonds, demonstrate excellent catalytic performance. However, the synthesis of APSNCs centers stable remains a huge challenge due to uncontrollable aggregation during reactions. Herein, Ru 3 uniformly dispersed on oxidized carbon nanotubes (Ru /OCNT) is successfully synthesized by using rapid pyrolysis precursor strategy. The obtained /OCNT exhibits performance for alkaline hydrogen evolution reaction (HER). catalyst achieves an overpotential 19 mV at current density 10 mA cm −2 in 1 m KOH solution, outperforming commercial 20 wt.% Pt/C 5 Ru/C. Moreover, mass activity 23.47 11.83 times higher than that Density functional theory (DFT) calculations reveal interaction metal–support effectively modulate structure atoms, lower adsorption energy site, promote H* desorption. This work offers new perspective design

Language: Английский

---

A Potassium‐Doped Perovskite‐Based Nanocomposite as an Efficient Bifunctional Oxygen Electrocatalyst for Rechargeable Zn‐Air Batteries

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

Published: May 8, 2025

Abstract Bifunctional oxygen electrocatalysts play a crucial role in the performance of rechargeable zinc‐air batteries (ZABs), directly impacting key parameters such as capacity, round‐trip efficiency, and durability. The ideal for ZAB air electrodes must exhibit high catalytic activity both reduction evolution reactions alkaline medium. This study presents potassium‐ion doping strategy to engineer electron defect structures perovskite oxide main phase, promoting phase separation form nanocomposite consisting secondary with an intergrowth structure. resulting catalyst exhibits increased concentrations Co 3+ vacancies, enhanced hydrophilicity, improved adsorption intermediates. As result, optimized composition demonstrates exceptional bifunctional superior durability, leading extended cycling stability energy conversion efficiency ZABs. Notably, it achieves 42% increase power density compared potassium‐free pristine catalyst, reduced voltage gap (ΔE = 0.83 V), cycle life over 250 h. work introduces novel design paradigm advanced metal‐air battery catalysts through potassium‐promoted defect‐engineered heterostructure manipulation oxides.

Language: Английский

---

A vanadium-containing high entropy alloy electrocatalyst with boosted electrocatalytic activity for oxygen evolution reaction

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137876 - 137876

Published: May 1, 2025

Language: Английский

---

Engineering Asymmetric Bimetallic CoM (M = Ni, Fe, Mn, Cu) Nanoparticles Encapsulated in Freestanding Wood‐Derived Carbon Electrodes for Enhanced ORR Kinetics in Zinc‐Air Batteries

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

Published: Dec. 10, 2024

The electrochemical reduction of oxygen is pivotal for advancing emerging energy technologies. Precise control over morphology and electronic structure essential enhancing catalytic activity stability in the reaction (ORR). In this study, a freestanding carbon electrode developed by in-situ growth nanotube (CNT)-encapsulated bimetallic CoM (M = Ni, Fe, Mn, Cu) nanoparticles (NPs) within hierarchical carbonized wood matrix (CoM@NWCC). hierarchically porous architecture promotes efficient mass transfer during ORR. X-ray photoelectron spectroscopy (XPS) density functional theory (DFT) analyses revealed that incorporating metals such as Cu modulates Co, specifically adjusting distance between d-band center (E

Language: Английский

---