A low redox potential and long life organic anode material for sodium-ion batteries  

作　　者：Zhi Li Yang Wei Kang Zhou Xin Huang Xing Zhou Jie Xu Taoyi Kong Junwei Lucas Bao Xiaoli Dong Yonggang Wang 

机构地区：[1]Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials,Institute of New Energy,Collaborative Innovation Center of Chemistry for Energy Materials(iChEM),Fudan University,Shanghai 200433,China [2]Department of Chemistry,Boston College,Chestnut Hill,MA 02467,USA [3]School of Materials Science and Engineering,Anhui University of Technology,Ma’anshan 243002,Anhui,China

出　　处：《Journal of Energy Chemistry》2025年第1期557-564,共8页能源化学(英文版)

基　　金：National Key Research and Development Program of China (2022YFB2402200);National Natural Science Foundation of China (22225201,22379028);Fundamental Research Funds for the Central Universities (20720220010);Shanghai Pilot Program for Basic Research–Fudan University 21TQ1400100 (21TQ009);Key Basic Research Program of Science and Technology Commission of Shanghai Municipality (23520750400)。

摘　　要：Sodium-ion batteries (SIBs) with organic electrodes are an emerging research direction due to the sustainability of organic materials based on elements like C,H,O,and sodium ions.Currently,organic electrode materials for SIBs are mainly used as cathodes because of their relatively high redox potentials(>1 V).Organic electrodes with low redox potential that can be used as anode are rare.Herein,a novel organic anode material (tetrasodium 1,4,5,8-naphthalenetetracarboxylate,Na_(4)TDC) has been developed with low redox potential (<0.7 V) and excellent cyclic stability.Its three-sodium storage mechanism was demonstrated with various in-situ/ex-situ spectroscopy and theoretical calculations,showing a high capacity of 208 mAh/g and an average decay rate of merely 0.022%per cycle.Moreover,the Na_(4)TDC-hard carbon composite can further acquire improved capacity and cycling stability for 1200 cycles even with a high mass loading of up to 20 mg cm^(-2).By pairing with a thick Na_(3)V_(2)(PO_(4))_(3)cathode (20.6 mg cm^(-2)),the as-fabricated full cell exhibited high operating voltage (2.8 V),excellent rate performance and cycling stability with a high capacity retention of 88.7% after 200 cycles,well highlighting the Na_(4)TDC anode material for SIBs.

关 键 词：Organic anode material Low redox potential Composite anode Sodium-ion batteries 

分 类 号：TM912[电气工程—电力电子与电力传动] TB322[一般工业技术—材料科学与工程]