Furfural residues derived nitrogen-sulfur co-doped sheet-like carbon: An excellent electrode for dual carbon lithium-ion capacitors  

作　　者：Xiaoying Guo Yan Qiao Zonglin Yi Christian Marcus Pedersen Yingxiong Wang Xiaodong Tian Peide Han 

机构地区：[1]College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan,030024,China [2]College of Chemistry,Taiyuan University of Technology,Taiyuan,030024,China [3]State Key Laboratory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan,030001,China [4]CAS Key Laboratory of Carbon Materials,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan,030001,China [5]University of Chinese Academy of Sciences,Beijing,100049,China [6]Department of Chemistry,University of Copenhagen,Universitetsparken 5,DK-2100 Copenhagen,Denmark

出　　处：《Green Energy & Environment》2024年第9期1427-1439,共13页绿色能源与环境（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (22075308, 22209197);Natural Science Foundation of Shanxi Province (20210302 1224439, 202203021211002);Shanxi Province Science Foundation for Youths (No: SQ2019001)。

摘　　要：The state-of-the-art lithium-ion capacitors (LICs),consisting of high-capacity battery-type anode and high-rate capacitor-type cathode,can deliver high energy density and large power density when comparing with traditional supercapacitors and lithium-ion batteries,respectively.However,the ion kinetics mismatch between cathode and anode leads to unsatisfied cycling lifetime and anode degradation.Tremendous efforts have been devoted to solving the abovementioned issue.One promising strategy is altering high conductive hard carbon anode with excellent structural stability to match with activated carbon cathode,assembling dual-carbon LIC.In this contribution,one-pot in-situ expansion and heteroatom doping strategy was adopted to prepare sheet-like hard carbon,while activated carbon was obtained involving activation.Ammonium persulfate was used as expanding and doping agent simultaneously.While furfural residues (FR) were served as carbon precursor.The resulting hard carbon (FRNS-HC) and activated carbon (FRNS-AC)show excellent electrochemical performance as negative and positive electrodes in a lithium-ion battery (LIB).To be specific,374.2 m Ah g^(-1)and 123.1 m Ah g^(-1)can be achieved at 0.1 A g^(-1)and 5 A g^(-1)when FRNS-HC was tested as anode.When combined with a highly porous carbon cathode (S_(BET)=2961 m^(2)g^(-1)) synthesized from the same precursor,the LIC showed high specific energy of147.67 Wh kg^(-1)at approximately 199.93 W kg^(-1),and outstanding cycling life with negligible capacitance fading over 1000 cycles.This study could lead the way for the development of heteroatom-doped porous carbon nanomaterials applied to Li-based energy storage applications.

关 键 词：Furfural residue Ammonium persulfate Sheet-like carbon Lithium-ion capacitors Hard carbon 

分 类 号：TM53[电气工程—电器]