Functional-Group Modification of Kraft Lignin for Enhanced Supercapacitors

时间:2020-07-07作者:浏览量:48


Functional-Group Modification of Kraft Lignin for Enhanced Supercapacitors

作者:Zhou, BJ (Zhou, Bingjie)[ 1,7 ] ; Li, J (Li, Jing)[ 1 ] ; Liu, W (Liu, Wei)[ 3,4 ] ; Jiang, HM (Jiang, Hanmei)[ 5 ] ; Li, SB (Li, Shaobo)[ 6 ] ; Tan, LX (Tan, Luxi)[ 1 ] ; Dong, LC (Dong, Lichun)[ 1 ] ; She, L (She, Lan)[ 2 ] ; Wei, ZD (Wei, Zidong)[ 1 ]


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CHEMSUSCHEM


卷: 13  期: 10  页: 2628-2633

DOI: 10.1002/cssc.201903435


出版年: MAY 22 2020


在线发表日期: MAR 2020

文献类型:Article


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摘要

Recent efforts to improve the capacitances of Kraft lignin (KL) in supercapacitors have mainly focused on screening KL substrates, which could either compensate the poor conductivity of KL or directly contribute to the capacitance. However, increasing the pseudocapacitance contributed by KL itself, through hydroquinone/quinone redox cycles, remains a challenge, owing to the roughly fixed content of hydroquinone species in natural KL. In this study, the capacitance of KL is greatly improved by using a functional-group modification strategy in which methoxy groups in KL are selectively converted into phenolic hydroxy groups, which facilitate the formation of additional hydroquinone moieties and thus lead to higher pseudocapacitances. The oxidized KL materials show up to 25.6 % enhancement of the phenolic hydroxy content in comparison to raw KL, which results in 21.9 % capacitance improvement from 322 to 390 F g(-1) at 0.5 A g(-1) in an acidic system.


关键词

作者关键词:biomass; energy storage; lignin; quinones; supercapacitors


KeyWords Plus:PERFORMANCE ELECTRODE MATERIALS; CHARGE STORAGE; CAPACITANCE; IMPROVEMENT; CHEMISTRY; BEHAVIOR; CATHODE


作者信息

通讯作者地址: Li, J; Wei, ZD (通讯作者)


显示更多Chongqing Univ, Sch Chem & Chem Engn, Shapingba 174, Chongqing 400044, Peoples R China.

通讯作者地址: She, L (通讯作者)

显示更多Second Mil Med Univ, Sch Pharm, Dept Inorgan Chem, 325 Guohe Rd, Shanghai 200433, Peoples R China.

地址:


显示更多[ 1 ]‎ Chongqing Univ, Sch Chem & Chem Engn, Shapingba 174, Chongqing 400044, Peoples R China

显示更多[ 2 ]‎ Second Mil Med Univ, Sch Pharm, Dept Inorgan Chem, 325 Guohe Rd, Shanghai 200433, Peoples R China

显示更多[ 3 ]‎ Georgia Inst Technol, Sch Chem & Biomol Engn, 500 10th St NW, Atlanta, GA 30332 USA

显示更多[ 4 ]‎ Georgia Inst Technol, RBI, 500 10th St NW, Atlanta, GA 30332 USA

显示更多[ 5 ]‎ Chongqing Univ Sci & Technol, Sch Met & Mat Engn, Chongqing 401331, Peoples R China

显示更多[ 6 ]‎ South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China

      [ 7 ]‎ China Automot Technol & Res Ctr Co Ltd, Natl Engn Lab Mobile Source Emiss Control Technol, Tianjin 300300, Peoples R China

电子邮件地址:lijing@cqu.edu.cn; slgs4100@126.com; zdwei@cqu.edu.cn


基金资助致谢

基金资助机构显示详情授权号

National Natural Science Foundation of China


21878030

91534205

21436003

Venture & Innovation Support Program for Chongqing Overseas Returnees

CX2018052

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出版商

WILEY-V C H VERLAG GMBH, POSTFACH 101161, 69451 WEINHEIM, GERMANY


期刊信息

Impact Factor (影响因子): Journal Citation Reports

类别 / 分类

研究方向:Chemistry; Science & Technology - Other Topics


Web of Science 类别:Chemistry, Multidisciplinary; Green & Sustainable Science & Technology