井冈山大学学报（自然科学版）2023，Vol.44Issue(6)：46-52,7.DOI:10.3969/j.issn.1674-8085.2023.06.006
三种生物质碳材料的制备及其在锂硫电池中的应用
PREPARATION OF DIFFERENT BIOMASS CARBON MATERIALS AND THE APPLICATION IN LITHIUM-SULFUR BATTERIES
摘要
Abstract
Lithium-sulfur batteries have gained considerable attention due to their high energy density and low raw material cost.In this paper,biomass carbon materials for lithium-sulfur batteries were prepared from three different biomass materials by high-temperature pyrolysis.Physical characterization was carried out by X-ray powder diffraction(XRD),scanning electron microscopy(SEM),FT-IR,BET,TGA,and constant current charge/discharge performance test,cyclic voltammetry(CV)test,AC impedance test were used to investigate the development of electrochemical properties in lithium-sulfur batteries.The results showed that the loofah-based biocarbon material obtained by high-temperature pyrolysis of loofah flesh had the highest specific surface area of 661.5 m2·g-1 and the largest pore volume of 0.4228 cm3·g-1,and obtained the optimal electrochemical performance as a carrier compounded with sulfur,with a specific capacity of 910.3 mAhg-1 in the first week of discharge and 554.1 mAh·g-1 after 200 weeks of cycling.The first week discharge specific capacity was 910.3 mAh·g-1,and the specific capacity could still reach 554.1 mAh·g-1 after 200 weeks of cycling,indicating good cycling and rate performance.关键词
锂硫电池/正极材料/生物碳/高温热解/丝瓜瓤Key words
lithium-sulfur battery/cathode materials/biochar/high-temperature pyrolysis/loofah flesh分类
信息技术与安全科学引用本文复制引用
李朋朋,李东楼,张娟素,程阳,白国梁,王春花..三种生物质碳材料的制备及其在锂硫电池中的应用[J].井冈山大学学报（自然科学版）,2023,44(6):46-52,7.基金项目
省部共建煤炭高效利用与绿色化工国家重点实验室开放课题项目(2022-K65) （2022-K65）
