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题名: LiNO3-free electrolyte for Li-S battery: A solvent of choice with low K-sp of polysulfide and low dendrite of lithium
作者: Qu, Chao1;  Chen, Yuqing1, 2;  Yang, Xiaofei1, 2;  Zhang, Hongzhang1, 3;  Li, Xianfeng1, 3;  Zhang, Huamin1, 3
关键词: K-sp of polysulfide ;  Shuttle effect inhibition ;  Lithium dendrite inhibition ;  Lithium sulfur battery ;  Practical soft package battery ;  Unmanned solar energy aircraft
刊名: NANO ENERGY
发表日期: 2017-09-01
DOI: 10.1016/j.nanoen.2017.07.002
卷: 39, 页:262-272
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary ;  Physics, Applied
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science ;  Physics
英文摘要: Although LiNO3 could effectively solve the polysulfide (PS) shuttle problem in Li-S battery, however, it causes explosive hazards with the cathode composition like gun powder (KNO3, Sulfur, and Carbon). Herein, a LiNO3-free electrolyte was designed to simultaneously inhibit the PS shuttle and lithium dendrite problem, with pure 1,3-dioxolane (DOL) as the solvent, due to the low K-sp of polysulfide as well as the stable SEI on lithium. As a synergistic effect, it enabled the Li-S batteries to achieve 95% coulombic efficiency, 3 times longer cycle life, and a slower self-discharging rate at 55 degrees C compared to the DOL/DME blend solvent. Four kinds of batteries, from coins to soft packages, were carried out to confirm the superiority of this electrolyte. Li-S soft package batteries with 4000 mAh capacity were assembled, achieving the specific energy of 350 Wh kg(-1) and specific power of 60 W kg(-1), which could cycle over 30 times at 0.2 C with high capacity retention of 80%. It is among the best comprehensive Li-S batteries performance reported using LiNO3-free electrolyte.
关键词[WOS]: HIGH-ENERGY-DENSITY ;  LONG CYCLE LIFE ;  SULFUR BATTERIES ;  C/S CATHODE ;  PERFORMANCE ;  CARBON ;  BINDER ;  1,3-DIOXOLANE ;  INTERPHASE ;  COMPOSITE
语种: 英语
WOS记录号: WOS:000408878200027
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/149910
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Div Energy Storage, Zhongshan Rd 457, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Collaborat Innovat Ctr Chem Energy Mat iChEM, Dalian 116023, Peoples R China

Recommended Citation:
Qu, Chao,Chen, Yuqing,Yang, Xiaofei,et al. LiNO3-free electrolyte for Li-S battery: A solvent of choice with low K-sp of polysulfide and low dendrite of lithium[J]. NANO ENERGY,2017,39:262-272.
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