文献类型：期刊文献

英文题名：Double Reaction Initiated Self-Assembly Process Fabricated Hard Carbon with High Power Capability for Lithium Ion Capacitor Anodes

作者：Zhang, Gaoyue[1,2] Sun, Kang[2,3] Liu, Yanyan[2,4] Wu, Dichao[2] Zhu, Haotian[2] Sun, Yunjuan[2] Wang, Ao[2,3] Jiang, Jianchun[1,2,3]

第一作者：Zhang, Gaoyue

机构：[1] School of Energy and Environment, Southeast University, Nanjing, 210096, China; [2] Key Lab of Biomass Energy and Material, Jiangsu Province, Jiangsu Co-Innovation Center of Efficient Processing, Utilization of Forest Resources, Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing, 210042, China; [3] Jiangsu Co-Innovation Center of Efficient Processing, Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China; [4] College of Science, Henan Agricultural University, Henan, Zhengzhou, 450002, China

年份：2022

外文期刊名：SSRN

收录：EI(收录号：20220160991)

语种：英文

外文关键词：Activated carbon - Assembly - Convolution - Graphite - Graphitization - Ions - Lithium - Lithium-ion batteries - Pore structure - Porosity - Supercapacitor

摘要：Hard carbons(HCs) with potential high rate capability is an ideal anode material for lithium ion capacitors (LICs). The existence of a optimized graphitic degree, appropriate hierarchical pore structure and efficient heteroatom doping is indispensable for the power capability of hard carbons, but it is very difficult to achieve through simple synthetic strategies. Herein, An ingenious self-assembly strategy is presented for the preparation of N/P co-doped hierarchical porous graphitic HCs (DGPCs). The self-assembly process of chitosan, phytic acid and Ni 2+ was completed by one-pot method. Coupling of multiple modifications was achieved benefit from the activation sites for different modifications are separated through esterification and chelation reactions. the optimal sample presents excellent power performance and good cycling stability. The kinetic analysis demonstrates that the Li ion diffusion rate is effectively increased. Pre-lithiated GDPC-1 was optimally matched to commercial activated carbon cathode as the anode, and the assembled GDPC-1//AC LIC delivered a high energy density of 50.5 Wh kg ?1 at an ultra-high power density of 20 kW kg ?1 . The outstanding power capability is attributed to the synergistic effect between catalytic graphitization, hierarchical porous structure and N/P co-doping, which comprehensively improves the diffusion kinetics of Li + from multiple scales. ? 2022, The Authors. All rights reserved.