Wu Xiaoyu, Liu Wenting, Wu Zhenzhen, Lin Feng
School of Automobile and Transportation, Shenzhen Polytechnic University, Shenzhen, Guangdong, 518055, China.
School of Materials Science and Engineering & Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin, 541004, China.
Phys Chem Chem Phys. 2025 Jul 23;27(29):15398-15406. doi: 10.1039/d5cp01724f.
Biomass-derived functional carbon materials have attracted increasing research attention due to their cost-effectiveness, environmental friendliness, and easy adjustability of compositions and structures. Especially, for sodium-ion batteries (SIBs), which are widely recognized as a promising alternative to lithium-ion batteries, biomass-derived hard carbon holds the greatest potential as an anode material for commercialization in the near future. In this paper, through a facile carbonization process, a multi-dimensional structured N-doped hard carbon with rational pores and defects has been successfully synthesized from an abundant and easy-accessible biomass precursor of ceiba flower, which delivers a remarkable initial coulombic efficiency of 83.2%. When incorporated with ZnInS nanoarchitectures, the fabricated composites maintain the multi-dimensional structures with further-optimized pores, defects and electronic structures, achieving a high reversible capacity of 510.2 mA h g after 1000 cycles at 1 A g. Considering the low-cost raw materials, environment-friendly and facile synthetic process, high initial coulombic efficiency and high reversible capacity, these ceiba-derived materials hold great application potential as anode materials for high-performance SIBs.
