文献类型：期刊文献

中文题名：Lignin‐derived carbon with pyridine N‐B doping and a nanosandwich structure for high and stable lithium storage

作者：Dichao Wu[1,2] Jiayuan Li[1,2] Yuying Zhao[1,2] Ao Wang[1] Gaoyue Zhang[3] Jianchun Jiang[1] Mengmeng Fan[2] Kang Sun[1,4,5,6]

第一作者：Dichao Wu

机构：[1]Key Lab of Biomass Energy and Material,Jiangsu Province,National Engineering Lab for Biomass Chemical Utilization,Key and Open Lab on Forest Chemical Engineering,SFA,Institute of Chemical Industry of Forest Products,Chinese Academy of Forestry,Nanjing,China;[2]Jiangsu Co‐Innovation Center of Efficient Processing and Utilization of Forest Resources,International Innovation Center for Forest Chemicals and Materials,College of Chemical Engineering,Nanjing Forestry University,Nanjing,China;[3]School of Energy and Environment,Southeast University,Nanjing,China;[4]Department of Chemistry,Tsinghua University,Beijing,China;[5]Fujian Provincial Key Laboratory of Biomass Low‐Carbon Conversion,Academy of Advanced Carbon Conversion Technology,Huaqiao University,Xiamen,China;[6]Chinese Academy of Sciences Xinjiang Lihua Institute of Technology,Urumqi,China

年份：2024

卷号：6

期号：8

起止页码：232-247

中文期刊名：Carbon Energy

外文期刊名：碳能源（英文）

收录：CSTPCD;;Scopus;CSCD:【CSCD2023_2024】；

基金：Jiangsu Key Lab of Biomass Energy and Material,Grant/Award Number:JSBEMS‐202101;National Natural Science Foundation of China,Grant/Award Numbers:51902162,51902162;National Key R&D Program of China,Grant/Award Number:2022YFB4201904;Foundation of Jiangsu Key Lab of Biomass Energy and Material,Grant/Award Number:JSBEM‐S‐202101;National Key R&D Program,Grant/Award Number:2022YFB4201904;Jiangsu Co‐Innovation Center of Efficient Processing and Utilization of Forest Resources,the International Innovation Center for Forest Chemicals and Materials;anjing Forestry University。

语种：英文

中文关键词：high cycling stability;high energy density;lithium‐ion batteries;pyridinic N‐B species;sandwich structure carbon nanosheet

分类号：TB383

摘要：Biomass‐derived carbon is a promising electrode material in energy storage devices.However,how to improve its low capacity and stability,and slow diffusion kinetics during lithium storage remains a challenge.In this research,we propose a“self‐assembly‐template”method to prepare B,N codoped porous carbon(BN‐C)with a nanosandwich structure and abundant pyridinic N‐B species.The nanosandwich structure can increase powder density and cycle stability by constructing a stable solid electrolyte interphase film,shortening the Li^(+) diffusion pathway,and accommodating volume expansion during repeated charging/discharging.The abundant pyridinic N‐B species can simultaneously promote the adsorption/desorption of Li^(+)/PF_(6)^(?) and reduce the diffusion barrier.The BN‐C electrode showed a high lithium‐ion storage capacity of above 1140 mAh g^(?1) at 0.05 A g^(?1) and superior stability(96.5% retained after 2000 cycles).Moreover,owing to the synergistic effect of the nanosandwich structure and pyridinic N‐B species,the assembled symmetrical BN‐C//BN‐C full cell shows a high energy density of 234.7Wh kg^(?1),high power density of 39.38 kW kg?1,and excellent cycling stability,superior to most of the other cells reported in the literature.As the density functional theory simulation demonstrated,pyridinic N‐B shows enhanced adsorption activity for Li^(+) and PF_(6)^(?),which promotes an increase in the capacity of the anode and cathode,respectively.Meanwhile,the relatively lower diffusion barrier of pyridinic N‐B promotes Li^(+) migration,resulting in good rate performance.Therefore,this study provides a new approach for the synergistic modulation of a nanostructure and an active site simultaneously to fabricate the carbon electrode material in energy storage devices.