On the Surface Chemical Aspects of Very High Energy Density, Rechargeable Li-Sulfur Batteries

被引：1231

作者：

Aurbach, Doron ^{[1
]}

Pollak, Elad ^{[1
]}

Elazari, Ran ^{[1
]}

Salitra, Gregory ^{[1
]}

Kelley, C. Scordilis ^{[2
]}

Affinito, John ^{[2
]}

机构：

[1] Bar Ilan Univ, Dept Chem, IL-52900 Ramat Gan, Israel

[2] Sion Power Inc, Tucson, AZ 85756 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2009年 / 156卷 / 08期

关键词：

additives; electrochemical electrodes; electrolytes; Fourier transform spectra; infrared spectra; lithium compounds; organic compounds; secondary cells; solvent effects; spectrochemical analysis; surface chemistry; X-ray photoelectron spectra; LITHIUM ELECTRODE; XPS; SPECTROSCOPY; BEHAVIOR; CATHODE; ETHER; CELLS; SALT;

D O I：

10.1149/1.3148721

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Li(metal)-sulfur (Li-S) systems are among the rechargeable batteries of the highest possible energy density due to the high capacity of both electrodes. The surface chemistry developed on Li electrodes in electrolyte solutions for Li-S batteries was rigorously studied using Fourier transform infrared and X-ray photoelectron spectroscopies. A special methodology was developed for handling the highly reactive Li samples. It was possible to analyze the contribution of solvents such as 1-3 dioxolane, the electrolyte LiN(SO2CF3)(2), polysulfide (Li2Sn), and LiNO3 additives to protective surface films that are formed on the Li electrodes. The role of LiNO3 as a critical component whose presence in solutions prevents a shuttle mechanism that limits the capacity of the sulfur electrodes is discussed and explained herein.

引用

页码：A694 / A702

页数：9

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