Tailoring microstructure of coal-based hard carbon and electrochemical performance for sodium-ion battery anodes: Insights from the intrinsic properties of diverse coal precursors - Weibo Meng; Hui Guo; Baolin Xing; Qiaomiao Xu; Man Wang; Long Li; Huihui Zeng; Xiaoxiao Qu; Chuanxiang Zhang; Peng Li; Yijun Cao (Fuel, 2026)