Fabrication of N/O/S co-doped carbon bubbles with nanoporous structure for potassium-ion storage

被引：0

作者：

Zhao, Chunxia ^{[1
,2
]}

Jiang, Longsheng ^{[2
]}

Chen, Qiushuang ^{[2
]}

Liu, Ziyang ^{[2
]}

Liao, Xiaoxue ^{[2
]}

Xiong, Yuli ^{[2
]}

Qi, Yanyuan ^{[2
]}

Chen, Wen ^{[2
]}

机构：

[1] Wuhan Univ Technol Xiangyang Demonstrat Zone, Hubei Longzhong Lab, Xiangyang 441000, Peoples R China

[2] Wuhan Univ Technol, Sch Mat Sci & Engn, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

来源：

MATERIALS LETTERS | 2025年 / 386卷

关键词：

Heteroatoms doping; Carbon nano-bubbles; Porous materials; Potassium ion storage;

D O I：

10.1016/j.matlet.2025.138210

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Potassium ion batteries and hybrid supercapacitors are promising new energy storage devices with high energy and power densities, as well as long cycle life. Carbon materials are ideal as the electrodes due to their low cost and wide availability. However, the large ionic radius of K-ions causes poor rate and cycling performance for carbon-based electrode materials. Herein, N/O/S co-doped porous carbon (NOSPC) bubbles are developed for Kion storage. The carbon bubbles are similar to 300 nm in size with openings, and possess hierarchical nanoporous structures and large surface area (644 m(2)/g). Heteroatom-doping can increase active sites and enhance the wettability of carbon bubbles. The half-cell with carbon nano-bubbles as the electrode delivers a high capacity of 430.3 mAh/g at 0.1 A/g and maintains an outstanding retention of 82.9 % after 5000 cycles at 2 A/g. It demonstrates that the N/O/S co-doped carbon bubbles with nanoporous structure provide prospects for highperformance potassium ion storage applications.

引用

页数：5