Life Organic Battery with PI: Dr. Jeremy Neubauer, NREL, Quick Charge - - PowerPoint PPT Presentation

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Project: High Energy, Long Life Organic Battery with Quick Charge Capability

Team: NREL, EIC Laboratories, Chemtura Corporation PI: Dr. Jeremy Neubauer, NREL, jeremy.neubauer@nrel.gov

Technology Overview:

• Non-aqueous liquid organic battery chemistry.
• Non-aqueous = high energy.
• Organic = low cost, domestically

sustainable.

• Liquid = fast mechanical recharge

capability

• Chemistries <$80/kWh and >100 Wh/kg are

within sight, even better in the long term

Current Status:

• PROVEN: Proof of concept via demonstration
• f full cell with organic catholyte and anolyte
• NEXT TECHNOLOGY STEPS: Demonstrate

higher concentration operation of current compounds, identify and demonstrate new higher energy compounds

• TECHNICAL HELP: Separators, flow cell design
• NEXT COMMERCIAL STEPS, HELP: Technology

is still immature, need to bridge the gap to commercial readiness Award Amount $1M Award Timeline 1/2014 – 1/2015 Next Stage Target: Demonstrate >100 Wh/kg Secure $2M funding Collaborations Sought: Separators, Cell Design

Project Statistics:

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Motivation, Vision, Objective

• Traditional Li-Ion active materials are

not domestically sustainable, and cost more than $100/kWh on their

• wn.
• Less than 45% of drivers can

complete all of their travel with a 300 mile BEV

• Vision: Liquid, non-aqueous organic

chemistries are domestically sustainable and could be quick- chargeable while meeting automotive performance requirements.

• Objective: Provide proof-of-concept

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Major Accomplishment: Chemistry Databasing

• Compiled a list of hundreds of organic redox compound

reactions with data on molecular weight, number of electrons transferred, redox potential, cost, NFPA ratings, and other info available from literature.

• Compiled a list of dozens of organic solvents with data on

density, cost, melting, boiling, and flash points, viscosity, dielectric constant, NFPA ratings, and other info available from literature.

• Approaching 100 screening tests of select compound and

solvent combinations in the lab (e.g. cyclic voltammetry, solubility, solvent stability, conductivity, etc.)

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Major Accomplishment: Computational Investigation

• Developed DFT

methodologies for predicting reaction type, redox potentials and solubilities, and reversibility

• Applied high throughput

tools to screen 4,000+

• rganic redox

compounds

• Selected promising

candidates based on projected cell-level performance and cost

Reduced Oxidized

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Major Accomplishment: Cell Development & Testing

• Developed a cell design for

testing cells up to hundreds

• f mAh, addressing

multiple issues with sealing, separation, and current collectors

• Performed cycle life tests
• n numerous compounds

in a half cell configuration

• Demonstrated a full cell

with non-aqueous organic redox compounds for both catholyte and anolyte

Full Cell cycling results Example voltage response for candidate cathode compound

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Moving Forward

• What we have now:
• Strong capabilities for model-based design and laboratory-based

validation of organic battery compounds

• A long list of compounds that don’t work
• A short list of compounds that do work

» Currently estimating chemistry at <$400/kWh » Projecting that <$80/kWh is possible

• What to do next:
• Our 1 year RANGE seedling project is over
• Seeking new funding to (1) expand the search for new promising

candidates and (2) continue development of identified promising candidates.

• Seeking collaborations on separator technology, flow cell design,

and bridging the gap to commercial readiness