Spiro-based triphenylamine molecule with steric structure as a cathode material for high-stable all organic lithium dual-ion batteries

作     者：Liya Huang Zehao Yu Liubin Wang Bin Qin Fengshi Cai Zhihao Yuan Zhiqiang Luo Liya Huang;Zehao Yu;Liubin Wang;Bin Qin;Fengshi Cai;Zhihao Yuan;Zhiqiang Luo

作者机构：Tianjin Key Lab for Photoelectric Materials&DevicesTianjin Key Laboratory of Organic Solar Cells and Photochemical ConversionSchoolof Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China College of Chemistry&Materials ScienceHebei UniversityBaoding 071002HebeiChina Department of ChemistryThe University of Hong KongPokfulam RoadHong Kong 999077China Haihe Laboratory of Sustainable Chemical TransformationsTianjin 300192China 

出 版 物：《能源化学:英文版》 (Journal of Energy Chemistry)

年 卷 期：2023年第83卷第8期

页      面：24-31,I0003页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China (21905205 and 22109037) the Natural Science Foundation of Tianjin City (20JCYBJC00380) the Advanced Talents Incubation Program of Hebei University (521000981408) the Haihe Laboratory of Sustainable Chemical Transformations(YYJC202110) 

主　　题：Spiro-basedmolecule Cathodematerial P-typeorganiccompounds Longcycling life All organic lithiumdual-ionbatteries 

摘      要：Redox p-type organic compounds are promising cathode materials for dual-ion ***,the triphenylamine-based polymers usually with agglomerate and intertwined molecular chain nature limit the maximum reaction of their active sites with large-sized ***,we demonstrate the application of a small molecule with rigid spirofluorene structu re,namely 2,2’,7,7’-tetrakis(diphenylamine)-9,9’-spirobifluorene(Spiro-TAD),as a cathode material for lithium dual-ion *** inherent sterical structure endows the Spiro-TAD with good chemical stability and large internal space for fast diffusion kinetics of anions in the organic *** a result,the Spiro-TAD electrode shows significant insolubility and less steric hindrance,and gives a high actual capacity of 109 mA h g^(-1)(active groups utilization ratio approximately 100%) at 50 mA g^(-1)with a high discharge voltage of 3.6 V(***+/Li),excellent rate capability(60 mA h g^(-1)at 2000 mA g^(-1)) and extremely stable cycling life(98.4% capacity retention after 1400 cycles at 500 mA g^(-1)) in half *** good electrochemical performance is attributed to the robust and rapid adsorption/desorption of ClO4-anions,which can be proved by the in-situ FTIR and ***,an all-organic lithium dual-ion battery(a-OLDIBs) is constructed using the Spiro-TAD as cathode and 3,4,9,10-Perylenetetracarboxylic diimide(PTCDI) as anode and displays long-term cycling performance of 87.5 mA h g^(-1)after 800 *** study will stimulate further developments in designing all organic battery systems.