Project: High Energy, Long Team: NREL, EIC Laboratories, Chemtura Corporation Life Organic Battery with PI: Dr. Jeremy Neubauer, NREL, Quick Charge Capability jeremy.neubauer@nrel.gov Technology Overview: Current Status: • • Non-aqueous liquid organic battery chemistry. PROVEN: Proof of concept via demonstration o Non-aqueous = high energy. of full cell with organic catholyte and anolyte • o Organic = low cost, domestically NEXT TECHNOLOGY STEPS: Demonstrate sustainable. higher concentration operation of current o Liquid = fast mechanical recharge compounds, identify and demonstrate new capability higher energy compounds • • Chemistries <$80/kWh and >100 Wh/kg are TECHNICAL HELP: Separators, flow cell design • within sight, even better in the long term NEXT COMMERCIAL STEPS, HELP: Technology is still immature, need to bridge the gap to commercial readiness Project Statistics: Award Amount $1M Award Timeline 1/2014 – 1/2015 Next Stage Target: Demonstrate >100 Wh/kg Secure $2M funding Collaborations Sought: Separators, Cell Design 1
Motivation, Vision, Objective • Traditional Li-Ion active materials are not domestically sustainable, and cost more than $100/kWh on their own. • 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 2
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.) 3
Major Accomplishment: Computational Investigation • Developed DFT methodologies for predicting reaction type, redox potentials and solubilities, and reversibility Reduced Oxidized • Applied high throughput tools to screen 4,000+ organic redox compounds • Selected promising candidates based on projected cell-level performance and cost 4
Major Accomplishment: Cell Development & Testing • Developed a cell design for testing cells up to hundreds of mAh, addressing multiple issues with sealing, separation, and current collectors Example voltage response for • Performed cycle life tests candidate cathode compound on 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 5
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 6
Recommend
More recommend
