Chemistry, Applied
; Chemistry, Physical
; Energy & Fuels
; Engineering, Chemical
研究领域[WOS]:
Chemistry
; Energy & Fuels
; Engineering
英文摘要:
Flow batteries with high energy density and long cycle life have been pursued to advance the progress of energy storage and grid application. Non-aqueous batteries with wide voltage windows represent a promising technology without the limitation of water electrolysis, but they suffer from low electrolyte concentration and unsatisfactory battery performance. Here, a non-aqueous lithium bromine rechargeable battery is proposed, which is based on Br-2/Br and Li+/Li as active redox pairs, with fast redox kinetics and good stability. The Li/Br battery combines the advantages of high output voltage (similar to 3.1 V), electrolyte concentration (3.0 mol/L), maximum power density (29.1 mW/cm(2)) and practical energy density (232.6 Wh/kg). Additionally, the battery displays a columbic efficiency (CE) of 90.0%, a voltage efficiency (VE) of 88.0% and an energy efficiency (EE) of 80.0% at 1.0 mA/cm(2) after continuously running for more than 10 0 0 cycles, which is by far the longest cycle life reported for non-aqueous flow batteries. (C) 2017 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.
1.Chinese Acad Sci, Div Energy Storage, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 3.Collaborat Innovat Ctr Chem Energy Mat, Dalian 116023, Liaoning, Peoples R China
Recommended Citation:
Xi, Xiaoli,Li, Xianfeng,Wang, Chenhui,et al. Non-aqueous lithium bromine battery of high energy density with carbon coated membrane[J]. JOURNAL OF ENERGY CHEMISTRY,2017,26(4):639-646.
