Origins of Dendrite Formation in Sodium-Oxygen Batteries and Possible Countermeasures

被引：57

作者：

Medenbach, Lukas ^{[1
,2
]}

Bender, Conrad L. ^{[1
]}

Haas, Ronja ^{[1
]}

Mogwitz, Boris ^{[1
,4
]}

Pompe, Constantin ^{[1
]}

Adelhelm, Philipp ^{[2
,3
]}

Schroeder, Daniel ^{[1
,4
]}

Janek, Juergen ^{[1
,4
]}

机构：

[1] Justus Liebig Univ Giessen, Phys Chem Inst, D-35392 Giessen, Germany

[2] Friedrich Schiller Univ Jena, Inst Tech Chem & Umweltchem, Philosophenweg 7a, D-07743 Jena, Germany

[3] Zentrum Energie & Umweltchem Jena CEEC Jena, Philosophenweg 7a, D-07743 Jena, Germany

[4] Justus Liebig Univ Giessen, Ctr Mat Res, Heinrich Buff Ring 16, D-35392 Giessen, Germany

来源：

ENERGY TECHNOLOGY | 2017年 / 5卷 / 12期

关键词：

dendrites; electrochemistry; reaction mechanisms; sodium; surface chemistry; LITHIUM-METAL BATTERIES; SUPEROXIDE NAO2 BATTERY; IN-SITU; LI METAL; ELECTROCHEMICAL IMPEDANCE; ELECTROLYTE INTERPHASE; LITHIUM/POLYMER CELLS; SECONDARY BATTERIES; DISCHARGE PRODUCTS; FAILURE MECHANISMS;

D O I：

10.1002/ente.201700326

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

One limiting phenomenon for the cycle life of metal-oxygen batteries is the growth of dendrites during metal plating (cell charging). For the relatively new sodium-oxygen cell, this subject has been scarcely investigated, until now. Therefore, dendrite formation is systematically investigated herein, with the aim of gaining a more detailed understanding of the underlying mechanisms and relevant control parameters. Electrochemical impedance spectroscopy, cycling experiments, and optical characterization techniques are applied in situ and ex situ; sodium dendrite growth is directly visualized, for the first time, by means of a tubular glass cell. The growth of instable surface morphologies is discussed from a theoretical perspective to comprehend the experimentally observed dendrite growth. Furthermore, countermeasures against issues with dendrites are discussed, with the aim of increasing the cycle life of sodium-oxygen batteries.

引用

页码：2265 / 2274

页数：10

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