Gas Evolution in All-Solid-State Battery Cells

被引：127

作者：

Bartsch, Timo ^{[1
]}

Strauss, Florian ^{[1
]}

Hatsukade, Toni ^{[1
]}

Schiele, Alexander ^{[1
]}

Kim, A-Young ^{[1
]}

Hartmann, Pascal ^{[1
,2
]}

Janek, Juergen ^{[1
,3
,4
]}

Brezesinski, Torsten ^{[1
]}

机构：

[1] Karlsruhe Inst Technol, Inst Nanotechnol, Battery & Electrochem Lab, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany

[2] BASF SE, D-67056 Ludwigshafen, Germany

[3] Justus Liebig Univ Giessen, Inst Phys Chem, Heinrich Buff Ring 17, D-35392 Giessen, Germany

[4] Justus Liebig Univ Giessen, Ctr Mat Sci ZfM LaMa, Heinrich Buff Ring 17, D-35392 Giessen, Germany

来源：

ACS ENERGY LETTERS | 2018年 / 3卷 / 10期

关键词：

OXYGEN RELEASE; CATHODE MATERIALS; LI; ELECTRODES; STABILITY; CAPACITY; NMC622; OXIDES; CO2;

D O I：

10.1021/acsenergylett.8b01457

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The formation of gaseous side products in liquid electrolyte-based lithium-ion batteries has been intensively studied in recent years and identified as being one of the sources of degradation (an indication of electrolyte and electrode instabilities). Herein, we demonstrate, to our knowledge for the first time, that gassing can also arise in all-solid-state battery cells made of Ni-rich layered oxide cathode materials and thiophosphate-based solid electrolytes. Combining isotopic labeling, titration for quantitative carbonate determination, and operando gas analysis, our findings reveal the evolution of CO2 stemming from carbonate species on the cathode surface as well as O-2 from the bulk of the oxide cathode at potentials above 4.5 V with respect to Li+/Li, among others.

引用

页码：2539 / 2543

页数：9

共 33 条

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