A non-aqueous Li/organosulfur semi-solid flow battery  

作　　者：Chenhui Wang Qinzhi Lai Pengcheng Xu Xianfeng Li Huamin Zhang 

机构地区：[1]Division of energy storage, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China [2]Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM), Dalian-116023, China [3]University of Chinese Academy of Sciences, Beijing 100039, China

出　　处：《Chinese Chemical Letters》2018年第5期716-718,共3页中国化学快报（英文版）

基　　金：supported by the financial support from the National Natural Science Foundation of China(Nos.21476224,21406219);the Key Project of Frontier Science,CAS(No.QYZDBSSW-JSC032);the National Youth Top-notch Talent Program and the Project of DICP-LCL

摘　　要：Non-aqueous flow batteries have attracted extensive attention due to the advantages of wide voltagewindow, high energy density and wide operating temperature and so on. Herein, tetramethylthiuramdisulfide （TMTD） with high intrinsic capacity （223 mAh/g） and high solubility （-1 mol/L in chloroform） isinvestigated as the positive active material of the non-aqueous LiJdisulfide semi-solid flow battery. Theelectrochemical activity and reversibility are investigated by cyclic voltammetry and linear scanvoltammetry. This Li/TMTD battery with a high cell voltage of 3.36 V achieves coulombic efficiency of 99%,voltage efficiency of 73% and energy efficiency of 72% at the current density of 5 mA/cm2 with activematerial concentration of 0.1 mol/L. Moreover, the LiJTMTD battery can operate for 100 cycles withoutobvious efficiency decay, indicating good stability.Non-aqueous flow batteries have attracted extensive attention due to the advantages of wide voltagewindow, high energy density and wide operating temperature and so on. Herein, tetramethylthiuramdisulfide （TMTD） with high intrinsic capacity （223 mAh/g） and high solubility （-1 mol/L in chloroform） isinvestigated as the positive active material of the non-aqueous LiJdisulfide semi-solid flow battery. Theelectrochemical activity and reversibility are investigated by cyclic voltammetry and linear scanvoltammetry. This Li/TMTD battery with a high cell voltage of 3.36 V achieves coulombic efficiency of 99%,voltage efficiency of 73% and energy efficiency of 72% at the current density of 5 mA/cm2 with activematerial concentration of 0.1 mol/L. Moreover, the LiJTMTD battery can operate for 100 cycles withoutobvious efficiency decay, indicating good stability.

关 键 词：Energy storage Batteries Organosulfur High energy density High cell voltage 

分 类 号：TM912[电气工程—电力电子与电力传动]