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LiNO3-free electrolyte for Li-S battery: A solvent of choice with low K-sp of polysulfide and low dendrite of lithium
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
2017-09-01
DOI10.1016/j.nanoen.2017.07.002
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
关键词[WOS]HIGH-ENERGY-DENSITY ; LONG CYCLE LIFE ; SULFUR BATTERIES ; C/S CATHODE ; PERFORMANCE ; CARBON ; BINDER ; 1,3-DIOXOLANE ; INTERPHASE ; COMPOSITE
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.
语种英语
WOS记录号WOS:000408878200027
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/149910
专题中国科学院大连化学物理研究所
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
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GB/T 7714
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.
APA Qu, Chao,Chen, Yuqing,Yang, Xiaofei,Zhang, Hongzhang,Li, Xianfeng,&Zhang, Huamin.(2017).LiNO3-free electrolyte for Li-S battery: A solvent of choice with low K-sp of polysulfide and low dendrite of lithium.NANO ENERGY,39,262-272.
MLA Qu, Chao,et al."LiNO3-free electrolyte for Li-S battery: A solvent of choice with low K-sp of polysulfide and low dendrite of lithium".NANO ENERGY 39(2017):262-272.
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