Advanced Porous SiOx/PAA Microarchitectures: A Sustainable Approach to High-Capacity and Ultra-Stable Anodes DOI

Jiahong Fan,

Siwei Jiang,

Y. Liu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 12, 2025

Silicon suboxide (SiOx) anode materials are sought to substitute graphite-based anodes due their high theoretical capacity and lower volume expansibility. Present chemical vapor deposition industrial production inevitably produces about 15 wt % submicro SiOx wastes. To improve the reuse of wastes in a more economical, efficient, sustainable way, present research focuses on exploring spherical porous SiOx/poly(acrylic acid) (PAA) microparticles via spray-drying process enhance resilience adhesivity. The PAA polymer membrane uniformly coats matrix strong hydrogen bond interactions, providing mechanical strength whole particles. availability also possesses excellent electrochemical stability adhesion, remaining almost free from pulverization during cycling. In half-cell testing, synthesized micro SiOx/PAA particles demonstrate higher initial efficiency 68% compared that reversible 1102 mAh g-1 with fading rate 0.036% per cycle after 200 cycles at 2 A g-1. Even 1000 ultralong cycles, still remains above full-cell measurement shows 160.25 for 600 suggesting practicality production. Microsized have shown impressive performance, achieving Coulombic (>99.8%), exceptional capability, outstanding cycling over cycles.

Language: Английский

Tunable Hydrogen Evolution Reaction Property of Janus SWSe Monolayer Using Defect and Strain Engineering DOI Creative Commons
Tian Chen, Luming Shen, Fuyuan Wang

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(7), P. 1588 - 1588

Published: April 2, 2025

Janus-structured transition metal dichalcogenides (TMDs) demonstrate remarkable electronic, optical, and catalytic characteristics owing to their distinctive asymmetric configurations. In this study, we comprehensively analyze the stability of Janus SWSe containing common vacancy defects through first-principles calculations. The findings indicate that Gibbs free energy for hydrogen evolution reaction (HER) is notably decreased around 0.5 eV, which lower compared with both pristine traditional MoS2 monolayers. Importantly, introduction external strain further improves HER efficiency defect-modified SWSe. This enhancement linked adaptive relaxation localized by unsaturated bonds in defect area, leading unique adjustable patterns. Our results clarify fundamental mechanism driving improved performance via modulation, offering theoretical insights designing effective catalysts using defective TMDs.

Language: Английский

Citations

0
Selective removal of ammonia nitrogen and nitrate nitrogen by surface molecularly imprinted homojunction BiVO4 photocatalysts DOI
Huining Zhang, Yang Cao, Jianping Han

et al.

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Language: Английский

Citations

0
Advanced Porous SiOx/PAA Microarchitectures: A Sustainable Approach to High-Capacity and Ultra-Stable Anodes DOI

Jiahong Fan,

Siwei Jiang,

Y. Liu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 12, 2025

Silicon suboxide (SiOx) anode materials are sought to substitute graphite-based anodes due their high theoretical capacity and lower volume expansibility. Present chemical vapor deposition industrial production inevitably produces about 15 wt % submicro SiOx wastes. To improve the reuse of wastes in a more economical, efficient, sustainable way, present research focuses on exploring spherical porous SiOx/poly(acrylic acid) (PAA) microparticles via spray-drying process enhance resilience adhesivity. The PAA polymer membrane uniformly coats matrix strong hydrogen bond interactions, providing mechanical strength whole particles. availability also possesses excellent electrochemical stability adhesion, remaining almost free from pulverization during cycling. In half-cell testing, synthesized micro SiOx/PAA particles demonstrate higher initial efficiency 68% compared that reversible 1102 mAh g-1 with fading rate 0.036% per cycle after 200 cycles at 2 A g-1. Even 1000 ultralong cycles, still remains above full-cell measurement shows 160.25 for 600 suggesting practicality production. Microsized have shown impressive performance, achieving Coulombic (>99.8%), exceptional capability, outstanding cycling over cycles.

Language: Английский

Citations

0