Lipophilic carbon-phosphorus composite sodium battery negative electrode material and preparation method thereof

• Main Authors: LI ZHENDUO, ZHAO YANHONG, ZHANG ZHIPENG, ZHANG BING, LIU YANG, NING SHUAI, DONG ZHIXIN, FENG ZUODONG, XU YAN, SHAN YINGHUI, LIN SHUANG, FENG HAOZHE, ZHAN XIANGLIAN, WU TAO, ZHANG CHUANLE, WANG YINGJIAN, WANG CHAO, SONG GUOTAO
• Format: Patent
• Language: Chinese; English
• Published: 19.07.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS THEREOF; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention belongs to the technical field of sodium battery negative electrode materials, and particularly relates to a lipophilic carbon-phosphorus composite sodium battery negative electrode material and a preparation method thereof.The preparation method comprises the following steps that 1, pumpkin peel is soaked in a sodium carbonate solution to be soft and dried in a natural ventilation state, and dried pumpkin peel is obtained; (2) putting the dried pumpkin peel into a muffle furnace for carbonization to obtain a hard carbon material; (3) adding the hard carbon material into a hydrothermal kettle filled with a sodium dodecyl benzene sulfonate solution, heating, and then drying to obtain a material after hydrothermal reaction; (4) carrying out ball milling on the material subjected to the hydrothermal reaction and red phosphorus to obtain a mixed material; (5) putting the mixed material into a tubular furnace, heating in a nitrogen atmosphere, and naturally cooling after heating is completed; and (6)