Mathematical Modeling of the Lithium, Thionyl Chloride Static Cell: II . Acid Electrolyte

Tsaur, Keh-Chang; Pollard, Richard

doi:10.1149/1.2115788

Cited by 21 publications

(36 citation statements)

References 9 publications

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“…As discharge progressed in a neutralized electrolyte, a lower discharge plateau of ~ 3.27 V appeared, corresponding to 4 Na + 2 SOCl 2 4 NaCl + S + SO 2 (2) with the NaCl product depositing onto the positive electrode and passivating the electrode. Similar twoplateau discharge was observed in Li/SOCl 2 cells in initially acidic electrolytes 11,17 .…”

Section: Na + Alcl 3 + 2 Socl 2 Naalcl + S + So 2 (1)supporting

confidence: 78%

A Rechargeable Na/Cl Battery

Dai¹,

Zhu²,

Tian³

et al. 2020

Preprint

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Sodium is a promising anode material for batteries due to its low standard electrode potential, high abundance and low cost. In this work, we report a new rechargeable ~ 3.5 V sodium ion battery using Na anode, amorphous carbon-nanosphere cathode and a starting electrolyte comprised of AlCl3 in SOCl2 with fluoride-based additives. The battery, exhibiting ultrahigh ~ 2800 mAh/g first discharge capacity, could cycle with a high reversible capacity up to ~ 1000 mAh/g. Through battery cycling, the electrolyte evolved to contain NaCl, various sulfur and chlorine species that supported anode’s Na/Na+ redox and cathode’s chloride/chlorine redox. Fluoride-rich additives were important in forming a solid-electrolyte interface, affording reversibility of the Na anode for a new class of high capacity secondary Na battery.

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Section: Na + Alcl 3 + 2 Socl 2 Naalcl + S + So 2 (1)supporting

confidence: 78%

A Rechargeable Na/Cl Battery

Dai¹,

Zhu²,

Tian³

et al. 2020

Preprint

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“…The cell temperature change with time is predicted using an overall energy balance. Tsaur and Pollard (15,16) extend their model to include the additional species present when an acid electrolyte is utilized, such as in reserve cells (25 tery as a homogeneous phase having effective average properties. Therefore, the model cannot be used to predict the effects of the arrangement of the cell components on the temperature distribution.…”

Section: Ormentioning

confidence: 99%

A Thermal Analysis of a Spirally Wound Battery Using a Simple Mathematical Model

Evans

White

1989

J. Electrochem. Soc.

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A two‐dimensional thermal model for spirally wound batteries has been developed. The governing equation of the model is the energy balance. Convective and insulated boundary conditions are used, and the equations are solved using a finite element code called TOPAZ2D. The finite element mesh is generated using a preprocessor to TOPAZ2D called MAZE. The model is used to estimate temperature profiles within a spirally wound D‐size cell. The model is applied to the lithium/thionyl chloride cell because of the thermal management problems that this cell exhibits. Simplified one‐dimensional models are presented that can be used to predict best and worst temperature profiles. The two‐dimensional model is used to predict the regions of maximum temperature within the spirally wound cell. Normal discharge as well as thermal runaway conditions are investigated.

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“…In addition, there are cross terms, viz., the fluxes depend on the gradients of both independent compositions ce and c~, as a consequence of the species interactions described by the multicomponent transport relation, Eq. [49] and [50] yields Eq. These terms also appear in the corresponding material balance equations.…”

Section: • [F~sin(~nx)im('cfl Dx] [44]mentioning

confidence: 99%

“…[B-7]-[B-11] for electrolytes containing three and four species, respectively. [48] and the binary interaction parameters D~ are presented elsewhere (50)(51)(52). Therefore, a change in a transference number may also affect the coefficients in Eq.…”

Section: • [F~sin(~nx)im('cfl Dx] [44]mentioning

confidence: 99%

Determination of Transport Properties for Solid Electrolytes from the Impedance of Thin Layer Cells

Pollard¹,

Comte²

1989

J. Electrochem. Soc.

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A mathematical model has been developed that describes the transport of species across amorphous and single-crystal solid electrolytes during ac impedance experiments. The analysis is based on the multicomponent transport equation, and it includes not only the effects of ion-pairing reactions but also the possibility that a second, nonconducting phase is distributed through the electrolyte. Transient and steady-periodic equations for the low-frequency impedance are derived for concentrated binary and ternary electrolytes sandwiched between electrodes at which an electrochemical reaction takes place. General analytic expressions are presented which relate the characteristics of the impedance response to the diffusion coefficient(s) and transference number(s) representative of the solid ionic conductor. The results show that transient effects are usually small but that species interactions and activity coefficient corrections can significantly influence the steady-periodic impedance. Accurate information on reaction stoichiometries and the nature of the mobile species is a prerequisite for meaningful interpretation of the transport properties. With the model, consistency tests are established that help distinguish between dilute and concentrated electrolytes and also that indicate when the material should be treated as a four-species system rather than as a binary electrolyte. The utility of the approach is illustrated by comparing theoretical results with available experimental data for two solid polymer electrolytes.) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 129.170.195.149 Downloaded on 2015-01-02 to IP ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 129.170.195.149 Downloaded on 2015-01-02 to IP ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 129.170.195.149 Downloaded on 2015-01-02 to IP ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 129.170.195.149 Downloaded on 2015-01-02 to IP

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Mathematical Modeling of the Lithium, Thionyl Chloride Static Cell: II . Acid Electrolyte

Cited by 21 publications

References 9 publications

A Rechargeable Na/Cl Battery

A Rechargeable Na/Cl Battery

A Thermal Analysis of a Spirally Wound Battery Using a Simple Mathematical Model

Determination of Transport Properties for Solid Electrolytes from the Impedance of Thin Layer Cells

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