Reaction and transport in Ag/Ag2O gas diffusion electrodes of aqueous Li-O2 batteries: Experiments and modeling

被引：32

作者：

Danner, Timo ^{[1
,2
,3
,4
]}

Horstmann, Birger ^{[1
,2
,3
]}

Wittmaier, Dennis ^{[1
]}

Wagner, Norbert ^{[1
]}

Bessler, Wolfgang G. ^{[2
,4
]}

机构：

[1] Inst Tech Thermodynam, German Aerosp Ctr DLR, Stuttgart, Germany

[2] Univ Stuttgart, Inst Thermodynam & Thermal Engn, D-70174 Stuttgart, Germany

[3] Helmholtz Inst Ulm Electrochem Energy Storage HIU, Ulm, Germany

[4] Offenburg Univ Appl Sci, INES, Offenburg, Germany

来源：

JOURNAL OF POWER SOURCES | 2014年 / 264卷

关键词：

Lithium-oxygen (Li-O-2); Aqueous electrolyte (LiOH); Half-cell experiments; Modeling and simulation; Electrode design; VALIDATED LEVERETT APPROACH; LITHIUM-OXYGEN BATTERIES; PEM FUEL-CELL; CAPILLARY-PRESSURE; MULTIPHASE FLOW; SURFACE-TENSION; AIR BATTERIES; REDUCTION; OXIDATION; MEDIA;

D O I：

10.1016/j.jpowsour.2014.03.149

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：

Aqueous lithium-oxygen batteries are promising candidates for electric energy storage. In this paper we present and discuss a multiphase continuum model of an aqueous lithium-oxygen single cell including reactions and transport in a porous gas diffusion electrode (GDE). The model is parameterized using in-house half-cell experiments and available literature data on aqueous electrolytes. We validate our transport model with cyclic voltammetry and electrochemical impedance spectroscopy measurements over a wide range of temperatures (25, 40, 55 degrees C) and electrolyte concentrations (0.1-2 M). We observe very good agreement between simulations and measurements during oxygen reduction conditions. A sensitivity analysis of the validated model demonstrates the influence of the porous structure on GDE performance and gives directions for the future development of electrodes. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：320 / 332

页数：13

共 82 条

[11]

Bruce PG, 2012, NAT MATER, V11, P19, DOI [10.1038/nmat3191, 10.1038/NMAT3191]

[12] Dielectric relaxation of dilute aqueous NaOH, NaAl(OH)4, and NaB(OH)4 [J].

Buchner, R ;

Hefter, G ;

May, PM ;

Sipos, P .

JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (50) :11186-11190

[13]

Bulan A., 2006, DE Patent App., Patent No. [DE102005023615A1, 102005023615]

[14] Rapid room-temperature synthesis of nanocrystalline spinels as oxygen reduction and evolution electrocatalysts [J].

Cheng, Fangyi ;

Shen, Jian ;

Peng, Bo ;

Pan, Yuede ;

Tao, Zhanliang ;

Chen, Jun .

NATURE CHEMISTRY, 2011, 3 (01) :79-84

[15] A Critical Review of Li/Air Batteries [J].

Christensen, Jake ;

Albertus, Paul ;

Sanchez-Carrera, Roel S. ;

Lohmann, Timm ;

Kozinsky, Boris ;

Liedtke, Ralf ;

Ahmed, Jasim ;

Kojic, Aleksandar .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2012, 159 (02) :R1-R30

[16] MnxCu1-xCo2O4 used as bifunctional electrocatalyst in alkaline medium [J].

De Koninck, Mathieu ;

Marsan, Benoit .

ELECTROCHIMICA ACTA, 2008, 53 (23) :7012-7021

[17] ONE-STEP AND EXTRAPOLATION METHODS FOR DIFFERENTIAL-ALGEBRAIC SYSTEMS [J].

DEUFLHARD, P ;

HAIRER, E ;

ZUGCK, J .

NUMERISCHE MATHEMATIK, 1987, 51 (05) :501-516

[18] Measurement of Capillary Pressure-Saturation Relationships Under Defined Compression Levels for Gas Diffusion Media of PEM Fuel Cells [J].

Dwenger, Stefan ;

Eigenberger, Gerhart ;

Nieken, Ulrich .

TRANSPORT IN POROUS MEDIA, 2012, 91 (01) :281-294

[19]

Eberle D., 2014, UNPUB

[20] SOLUBILITIES OF HYDROGEN AND OXYGEN IN CONCENTRATED LITHIUM SALT-SOLUTIONS [J].

ELLIOT, AJ ;

CHENIER, MP ;

OUELLETTE, DC .

FUSION ENGINEERING AND DESIGN, 1990, 13 (01) :29-31

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