Enzymatic Hydrolysis Lignin-Derived Porous Carbons through Ammonia Activation: Activation Mechanism and Charge Storage Mechanism

被引：72

作者：

Jian, Wenbin ^{[1
]}

Zhang, Wenli ^{[1
,4
]}

Wu, Bingchi ^{[1
]}

Wei, Xueer ^{[1
]}

Liang, Wanling ^{[1
]}

Zhang, Xiaoshan ^{[1
]}

Wen, Fuwang ^{[1
]}

Zhao, Lei ^{[1
]}

Yin, Jian ^{[2
]}

Lu, Ke ^{[3
]}

Qiu, Xueqing ^{[1
,4
]}

机构：

[1] Guangdong Univ Technol GDUT, Sch Chem Engn & Light Ind, Guangzhou 510006, Peoples R China

[2] King Abdullah Univ Sci & Technol KAUST, Mat Sci & Engn Phys Sci & Engn Div, Thuwal 239556900, Saudi Arabia

[3] Anhui Univ, Inst Phys Sci & Informat Technol, Key Lab Struct & Funct Regulat Hybrid Mat, Minist Educ, Hefei 230601, Peoples R China

[4] Guangdong Univ Technol GDUT, Guangdong Prov Key Lab Plant Resources Biorefiner, Guangzhou 510006, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2022年 / 14卷 / 04期

基金：

中国国家自然科学基金;

关键词：

lignin; porous carbons; ammonia activation; activation mechanism; electrochemical capacitors; PORE STRUCTURE; SURFACE-AREA; SUPERCAPACITORS; PERFORMANCE; NANOFIBERS; ELECTRODES; PYROLYSIS; OXIDATION; CELLULOSE; SIZE;

D O I：

10.1021/acsami.1c22576

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The low energy density and low cost performance of electrochemical capacitors (ECs) are the principal factors that limit the wide applications of ECs. In this work, we used enzymatic hydrolysis lignin as the carbon source and an ammonia activation methodology to prepare nitrogen-doped lignin-derived porous carbon (NLPC) electrode materials with high specific surface areas. We elucidated the free radical mechanism of ammonia activation and the relationship between nitrogen doping configurations, doping levels, and preparation temperatures. Furthermore, we assembled NLPC parallel to NLPC symmetric ECs and NLPC parallel to Zn asymmetric ECs using aqueous sulfate electrolytes. Compared with the ECs using KOH aqueous electrolyte, the energy densities of NLPC parallel to NLPC and NLPC parallel to Zn ECs were significantly improved. The divergence of charge storage characteristics in KOH, Na2SO4, and ZnSO4 electrolytes were compared by analyzing their area surface capacitance. This work provides a strategy for the sustainable preparation of lignin-derived porous carbons toward ECs with high energy densities.

引用

页码：5425 / 5438

页数：14