文献类型：期刊文献

中文题名：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

英文题名：Preparation and Capacitive Deionization Performance of N,S Co-doped Porous Carbon Cathode

作者：李佳媛[1,2] 李蓓[1,2] 王傲[1,2] 呼生春[1,2] 许伟[1,2] 刘军利[1,2]

第一作者：李佳媛

机构：[1]中国林业科学研究院林产化学工业研究所,江苏省生物质能源与材料重点实验室,国家林业和草原局林产化学工程重点实验室,林木生物质低碳高效利用国家工程研究中心,江苏南京210042;[2]南京林业大学江苏省林业资源高效加工利用协同创新中心,江苏南京210037

年份：2025

卷号：45

期号：5

起止页码：55-62

中文期刊名：林产化学与工业

外文期刊名：Chemistry and Industry of Forest Products

收录：;北大核心:【北大核心2023】；

基金：江苏省生物质能源与材料重点实验室面上项目(JSBEM-S-202313)。

语种：中文

中文关键词：木质素磺酸盐;炭材料;电化学;电容去离子

外文关键词：lignosulfonate;carbon material;electrochemistry;capacitive deionization

分类号：TQ35

摘要：以木质素磺酸盐为原料和硫自掺杂剂,KNO3为活化剂和氮源,通过简单的同步活化-掺杂策略制备了氮硫共掺杂多孔炭(KSC)材料,同时制备了不添加硝酸钾的木质素磺酸盐炭(SC)。结构表征表明:KSC具有丰富的多孔结构,比表面积为1574 m^(2)/g,总孔容为0.77 cm^(3)/g,微孔容积为0.54 cm^(3)/g。KSC表面的元素组成分别为C 87.93%、O 8.71%、N 2.38%和S 0.98%,这些掺杂的氮、硫元素以表面官能团的形式存在。电化学测试表明:KSC电极在0.5 A/g时比电容为114.2 F/g,较SC样品提升了132.1%,并且具有较好的倍率性能。将其作为阴极材料应用于电容去离子(CDI)脱盐反应器,在1.2 V的工作电压下表现出9.5 mg/g的高脱盐容量,明显高于SC。同时,在1 V电压下进行25次吸附-脱附循环后,电极的脱盐容量保持率高于90%,具有良好的循环稳定性。
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 1574 m^(2)/g,a total pore volume of 0.77 cm^(3)/g,and a micropore volume of 0.54 cm^(3)/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.