Enhanced Sodium Storage Performance of Few-Layer Graphene-Encapsulated Hard Carbon Fiber Composite Electrodes DOI Creative Commons
Bo Zhu, Tianyi Ji, Qiong Liu

et al.

Batteries, Journal Year: 2025, Volume and Issue: 11(5), P. 203 - 203

Published: May 21, 2025

Hard carbon anodes are promising for sodium-ion batteries due to their low cost and high reversible capacity. However, the long-term Na+ (de)intercalating process destroys structure of two-phase interface between electrode electrolyte, impairing cycling stability. In this paper, a few-layer graphene (FLG)-coated hard fiber composite is constructed. A uniform encapsulation confirmed by synchrotron small-angle X-ray scattering transmission electron microscopy technologies. Post-cycling observation reveals FLG participation in forming hybrid solid electrolyte interphase (SEI). At proper concentration, with small specific surface area pore size characteristics well matched SEI. The FLG-integrated SEI not only mitigates volume expansion but also enhances ion conductivity through its oxygen-rich functional groups. As result, maintains 98.2% capacity retention after 100 cycles reaches 164 mAh g−1 at 1000 mA g−1, compared 97 pristine carbon. This work demonstrates that coating simultaneously stabilizes interfacial chemistry improves transport, offering practical pathway advance high-performance batteries.

Language: Английский

Self-activation strategy toward walnut shell-based porous carbon for supercapacitors DOI
Junfeng Li, Kun Chen, Weining Li

et al.

Diamond and Related Materials, Journal Year: 2025, Volume and Issue: unknown, P. 112290 - 112290

Published: April 1, 2025

Language: Английский

Citations

0
Plasma-Enhanced Chemical Vapor Deposition-Assisted Construction of Biomass-Derived Porous Carbon DOI

Jian Lü,

Shuai Ruan, Xinping He

et al.

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: May 15, 2025

Language: Английский

Citations

0
Enhanced Sodium Storage Performance of Few-Layer Graphene-Encapsulated Hard Carbon Fiber Composite Electrodes DOI Creative Commons
Bo Zhu, Tianyi Ji, Qiong Liu

et al.

Batteries, Journal Year: 2025, Volume and Issue: 11(5), P. 203 - 203

Published: May 21, 2025

Hard carbon anodes are promising for sodium-ion batteries due to their low cost and high reversible capacity. However, the long-term Na+ (de)intercalating process destroys structure of two-phase interface between electrode electrolyte, impairing cycling stability. In this paper, a few-layer graphene (FLG)-coated hard fiber composite is constructed. A uniform encapsulation confirmed by synchrotron small-angle X-ray scattering transmission electron microscopy technologies. Post-cycling observation reveals FLG participation in forming hybrid solid electrolyte interphase (SEI). At proper concentration, with small specific surface area pore size characteristics well matched SEI. The FLG-integrated SEI not only mitigates volume expansion but also enhances ion conductivity through its oxygen-rich functional groups. As result, maintains 98.2% capacity retention after 100 cycles reaches 164 mAh g−1 at 1000 mA g−1, compared 97 pristine carbon. This work demonstrates that coating simultaneously stabilizes interfacial chemistry improves transport, offering practical pathway advance high-performance batteries.

Language: Английский

Citations

0