Zhu Baoning, Liu Jinghua, Zhong Qijun, Wen Yaru, Dong Qianqian, Li Yuhao, Jin Qianqian, Lu Yao
Liuzhou Key Laboratory of New Energy Vehicle Power Lithium Battery, Guangxi Engineering Research Center for Characteristic Metallic Powder Materials, School of Electronic Engineering, Guangxi University of Science and Technology, Liuzhou 545000, China.
Guangxi Key Laboratory of Green Processing of Sugar Resources, College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China.
Polymers (Basel). 2025 Apr 27;17(9):1198. doi: 10.3390/polym17091198.
Heteroatom-doped biomass-derived porous carbon materials show promising applications as electrode components in energy storage technologies. In this investigation, we present a template-assisted pyrolysis procedure to fabricate nitrogen-oxygen dual-doped carbon materials. Firstly, the precursor and template initially polymerized to form a white jelly-like gel, which was freeze-dried to create a nanosheet-assembled structure. Subsequent high-temperature pyrolysis induced the formation of a porous structure with nanosheet morphology. The CMC-ZnK sample derived from the dual template of potassium citrate and zinc acetate pyrolyzed at 800 °C exhibits optimal electrochemical performance, delivering a specific capacitance of 271.4 F g at 1 A g in a three-electrode configuration, along with outstanding rate capability (90% retention, 244 F g at 10 A g). The constructed supercapacitor demonstrated an energy density of 6.5 Wh kg under a power density of 500 W kg. Furthermore, this study systematically investigated the performance variation mechanisms at different temperatures, revealing the relationship between structural composition and temperature in biomass materials.
杂原子掺杂的生物质衍生多孔碳材料作为储能技术中的电极组件显示出有前景的应用。在本研究中，我们提出了一种模板辅助热解程序来制备氮氧双掺杂碳材料。首先，前驱体和模板最初聚合形成白色果冻状凝胶，将其冷冻干燥以形成纳米片组装结构。随后的高温热解诱导形成具有纳米片形态的多孔结构。源自柠檬酸钾和醋酸锌双模板并在800℃热解的CMC-ZnK样品表现出最佳的电化学性能，在三电极配置中，在1 A g下的比电容为271.4 F g，同时具有出色的倍率性能（保持率90%，在10 A g下为244 F g）。构建的超级电容器在500 W kg的功率密度下表现出6.5 Wh kg的能量密度。此外，本研究系统地研究了不同温度下的性能变化机制，揭示了生物质材料中结构组成与温度之间的关系。
