@article{Liang2025, 
author = {Shuaitong Liang and Yuenan Li and Junping Miao and Shuoshuo Liu and Xiaoyan Sun and Mengyao Lv and Songya Zhao and Pengju Han and Xiang Li and Weili Shao and Jianxin He and Changsheng Guo and Zhiwei Xu},
title = {Selenium-embedded hierarchical porous carbon nanofibers toward stable potassium storage},
year = {2025},
journal = {Nano Research},
volume = {18},
number = {8},
pages = {94907667},
keywords = {potassium–selenium batteries, selenium molecular state, microporous carbon nanofiber, pore confinement},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94907667},
doi = {10.26599/NR.2025.94907667},
abstract = {Porous carbon fiber substrates play a pivotal role in enhancing the performance of potassium–selenium (K–Se) battery, as they are key to efficiently confining small Se molecules and regulating selenide reactions. Herein, to address the issues of volumetric expansion and polyselenide formation caused by disordered Se aggregation, a three-dimensional composite material of microporous carbon nanofibers coated with Se and Fe was synthesized, effectively suppressing the shuttle effect of liquid-phase polyselenides. State-of-the-art analytical techniques and theoretical modeling were employed to elucidate the deposition dynamics of Se molecules within micropores and the mitigation mechanisms for volumetric expansion effects. The pore-confinement effect optimizes the spatial distribution of Se, while Fe catalyzed the K2Sex, effectively mitigating the sluggish reaction kinetics associated with K2Sex formation. This study offers a theoretical framework and experimental insights to advance the development of K–Se battery with high energy density and superior cycling stability.}
}