TY - JOUR
T1 - Enzymatic Hydrolysis Lignin-Derived Porous Carbons through Ammonia Activation: Activation Mechanism and Charge Storage Mechanism
AU - Jian, Wenbin
AU - Zhang, Wenli
AU - Wu, Bingchi
AU - Wei, Xueer
AU - Liang, Wanling
AU - Zhang, Xiaoshan
AU - Wen, Fuwang
AU - Zhao, Lei
AU - Yin, Jian
AU - Lu, Ke
AU - Qiu, Xueqing
N1 - KAUST Repository Item: Exported on 2022-01-25
Acknowledgements: The authors acknowledge the financial support from the National Natural Science Foundation of China (22108044), the Research and Development Program in Key Fields of Guangdong Province (2020B1111380002), the financial support from the Guangdong Provincial Key Laboratory of Plant Resources Biorefinery (2021GDKLPRB07) and the Special Funds for the Cultivation of Guangdong College Students’ Scientific and Technological Innovation.
PY - 2022/1/20
Y1 - 2022/1/20
N2 - 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∥NLPC symmetric ECs and NLPC∥Zn asymmetric ECs using aqueous sulfate electrolytes. Compared with the ECs using KOH aqueous electrolyte, the energy densities of NLPC∥NLPC and NLPC∥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.
AB - 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∥NLPC symmetric ECs and NLPC∥Zn asymmetric ECs using aqueous sulfate electrolytes. Compared with the ECs using KOH aqueous electrolyte, the energy densities of NLPC∥NLPC and NLPC∥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.
UR - http://hdl.handle.net/10754/675092
UR - https://pubs.acs.org/doi/10.1021/acsami.1c22576
U2 - 10.1021/acsami.1c22576
DO - 10.1021/acsami.1c22576
M3 - Article
C2 - 35050588
SN - 1944-8244
JO - ACS Applied Materials & Interfaces
JF - ACS Applied Materials & Interfaces
ER -