STABLE Kick-off meeting Torino – October 25 th - 26 th,2012 Synthesis and optimization of...

STABLE Kick-off meetingTorino – October 25th- 26th ,2012

Synthesis and optimization of electrolyte of Li-air cells

David AmantiaChristophe AucherLEITAT

STABLE kick-off meetingTorino - October 25th- 26th, 2012


Summary

Overview

o Overall goals

o Workplan

o Deliverables

o Milestones


Overview Information available from page 6 to 51 of Annex I

Work package number WP 3 Start date or starting event:

M32

Work package title Synthesis and optimization of electrolyte of Li-air cells

Activity Type RTD

Participant id

POLITO

LEITAT

LUREDERRA

IVF UCCSA

U

CEGASA

ELAPHE

Person-months per beneficiary:

14 20 6 0 0 8 6 2

Start date or starting event: M1End date: M32


Summary

o Overview

Overall goals

o Workplan

o Deliverables

o Milestones


Overall goals Information available from page 6 to 51 of Annex I

Objectives - Synthesis and characterization of stable electrolyte with low

viscosity and high oxygen solubility to increase the discharge current density.

- Synthesis, characterization and evaluation of the performance of the electrolyte with different additives in terms of their effect to volatility, viscosity and conductivity of electrolyte.

- Determination of the most suitable lithium air battery materials and technology for the use in EVs.


Summary

o Overview

o Overall goals

Workplan

o Deliverables

o Milestones


Workplan Information available from page 6 to 51 of Annex I

Work will be focused on:-the preparation/characterization of IL/solvent/additives/salt melts -studies on SEI

-Optimization of PC/EC/DEC/DMC melts-Build new ILs by ions exchange from conventional RTILs or other precursors.-Additives for by-products and oxygen solubility

Challenge = reach the best ratio between:Conductivity (& viscosity, temperature) ↑Solvent evaporation Electrolyte quantityOxygen & by-product solubility ↑Water content ↓, Hydrophobicity ↑Electrochemical windows ↑Stability (cycling) ↑Safety ↑


Workplan Information available from page 6 to 51 of Annex I

Task 3.1: Synthesis and optimization of room temperature ionic liquids (RTILs) or combinations solvents properties for the aim of obtaining good performance electrolyte solvents (Month 1- Month 32, POLITO (14 MM), LEITAT (12 MM) and CEG (6 MM)).

Task 3.2: Investigation on influence of aprotic additives to RTILs on properties and oxygen solubility etc. (Month1- Month 32, 8MM, SAU).

Task 3.3: Investigation and evaluation of physical properties of RTILs and the optimum filling amount of electrolyte (Month 1- Month 32, LEITAT (8MM), LUREDERRA (6MM), Elaphe (2MM))

Milestones (M7, M8, M9)Deliverables (D3.1, D3.2, D3.3)


Summary

o Overview

o Overall goals

o Workplan

Deliverables

o Milestones


Deliverables Information available from page 6 to 51 of Annex I

Title Description Date

D1.1 Electrolyte solvent synthesis and optimization (I): Report on description of preparation and characterizationof lithium air battery electrolytes:

1) Preparation and characterization of salt and different compositions of ionic liquids with physical and chemical specifications

2) Preparation and characterization of suitable additives or fillers to RTILs 3) Investigation of suitable conditions for electrolyte such as filling amount and environment impact specifications such as temperature and pressure etc.

M12


Summary

o Overview

o Overall goals

o Workplan

o Deliverables

Milestones


Milestones Information available from page 6 to 51 of Annex I

Milestone number: 3Milestone name: MS7, MS8, MS9Lead beneficiary: LEITAT

Delivery date: M12, M24, M32 STABLE Annex1: Description of work – 2012-03-26

Realization of electrolyte with: (1)water content < 2% (Karl Fisher, TG), (2) electrochemical windows between 2 to 4.3V versus Li.

(1) Realization of suitable additives of RTILs; (2) Electrolyte has viscosity of (1- 6 mPas), and O2 solubility of (2-12mg/L).

Realization of optimum electrolytes with thermal stability of -40°-110°and ion conductivities (2-11mS/cm).


Milestones Information available from page 6 to 51 of Annex I

Milestone number: 3Milestone name: MS7, MS8, MS9Lead beneficiary: LEITAT

Delivery date: M12, M24, M32Organization proposed

MS7 - Realization of electrolyte with: (1)water content < 2% (Karl Fisher, TG), (2) electrochemical windows between 2 to 4.3V versus Li. (3) Physical characteristic: viscosity of (1- 6 mPas), ion conductivities (2-11mS/cm), purity (IC )

MS8 - (1) Realization of suitable additives of RTILs; (2) Electrolyte has viscosity of (1- 6 mPas), and O2 solubility of (2-12mg/L). (3) Up scaling mL - 100 mL

MS9 (1) Realization of optimum electrolytes with thermal stability of -40°-110°and ion conductivities (2-11mS/cm).(2) Up scaling 100mL - ½ L


Proposed deadlines

M6/7 – March / April: Exchange of samples Poltio (solvent melts) <-> SAU (Additives)<-> Leitat (RTILs)

M9 - June: Input Elaphe, Material and production techniques analysis (up scaling ?) - All

M9 - June: Transfert of samples Poltio, SAU, Leitat - CEG, LUREDERRA


Thank you for your attention


Synthesis and optimization of electrolyte of Li-air cells

Le

itat

Toolb

ox

Designation Utility EquipmentGlove box Rate of O2 and H2O > 0.1 ppm

1) Preparation of the electrolyte (i.e. salt of lithium+ solvent.)2) Assembly of the electrochemical cell3) Electrochemical test inside the glove box (Electrolyte electrochemical Windows)

Glove Box UNILAB (4 gloves)

IC Ionic ChromatographyCl-, BF4

-, TFSI-, TFO-, PF6-, NO3

-, CH3COO-, NH3-…

(detection limit = 0,1 ppm – 10 ppm)

Dionnex ics 300Sample charger As-DV

Karl Fisher High precision for the determination of the water content.10 – 1000 µg, ± 3 µg

Coulometer KF 831

Potentiostat / Galvanostat

2 potentiostat / galvanostat are available for testing, (1) electrolyte (conductivity, O2 reduction, potentials windows) and (2) complete cell in a Swagelok system where the purity and gas pressure could be controlled.

VMP3Autolab

TGA Thermal Gravimetric AnalyzeConventional method for determining the temperature of the degradation of the solvent and the water content.

TGA Q500

DSC Differential Scanning CalorimeterConventional method for determining the physical properties of the solvent (melting, freezing points…)

DSC Q20

FTIR Fourier Transform InfraRed spectrophotometerConventional method for determining the nature of the different bonds.

IRAffinity-1

Conductimeter Conventional method for determining the conductivity of the solvent and electrolyte. Possibility for checking the conductivity at different temperature.

Ec-Meter Basic 30+Titanium cell for viscous liquid and Platinum cell for conventional liquid.

Viscosimeter Conventional method for determining the viscosity of the solvent and electrolyte. Possibility for checking the viscosity at different temperature.

Brookfield LVDV-E VicometerLV spindle set (from 61 to 64)

STABLE Kick-off meeting Torino – October 25 th - 26 th,2012 Synthesis and optimization of...

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