林产化学与工业2025，Vol.45Issue(5)：55-62,8.DOI:10.20195/j.issn.0253-2417.2024127
氮硫共掺杂多孔炭的制备及其在电容去离子阴极中的应用
Preparation and Capacitive Deionization Performance of N,S Co-doped Porous Carbon Cathode
摘要
Abstract
N,S co-doped porous carbon material(KSC)was prepared by a simple one-step activation and carbonization method,using sodium lignosulphonate as carbon source and sulfur self-dopant,with KNO3 as nitrogen source and activator.For comparison,lignosulfonate-derived carbon(SC)was prepared without potassium nitrate.Structural characterization indicated that KSC has a rich porous structure,with a specific surface area of 1 574 m2/g,a total pore volume of 0.77 cm3/g,and a micropore volume of 0.54 cm3/g.The elements on the KSC surface were C 87.93％,O 8.71％,N 2.38％and S 0.98％respectively.These doped nitrogen and sulfur elements existed primarily as surface functional groups.Electrochemical tests showed that the specific capacitance of the KSC electrode at 0.5 A/g was 114.2 F/g,which was 132.1％higher than that of the SC,showing good rate performance.When the KSC electrode was used as cathode material for capacitive deionization(CDI),the CDI reactor exhibited a high adsorption capacity of 9.5 mg/g at a working voltage of 1.2 V,which was significantly higher than that of the SC cathode.Moreover,after 25 adsorption-desorption cycles at 1 V voltage,the adsorption capacity retention rate exceeded 90％,indicating the product exhibited excellent cycle stability.关键词
木质素磺酸盐/炭材料/电化学/电容去离子Key words
lignosulfonate/carbon material/electrochemistry/capacitive deionization分类
化学工程引用本文复制引用
李佳媛,李蓓,王傲,呼生春,许伟,刘军利..氮硫共掺杂多孔炭的制备及其在电容去离子阴极中的应用[J].林产化学与工业,2025,45(5):55-62,8.基金项目
江苏省生物质能源与材料重点实验室面上项目(JSBEM-S-202313) （JSBEM-S-202313）
