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Electrochemistry and Electric Grid > Batteries for Advanced TransportationHigh-Energy Organic Battery Electrodes
Start Date: August 2008
Jean-Marie Tarascon, Michel Armand, G. Demailly, Franck Dolhem, Philippe Poizot, University of Picardie Jules Verne, France
While inorganic lithium-ion battery approaches have achieved reasonable energy density, radical new approaches are required to enable batteries with the high energy density, low cost, and the environmental compatibility required to penetrate the transportation sector. This effort seeks to develop a new class of organic battery electrodes with outstanding properties in each of these three respects.
Battery performance in electric vehicles has improved primarily from increased penetration and development of lithium-ion technology within the field of electrochemical energy storage. Nevertheless, today’s Li-ion electro-active components, such as LiCoO2 and LiMn2O4, are not produced through renewable resources but from ores that can be limited or hazardous. The raw materials extraction and electrode processing techniques require large amounts of energy. Additionally, the rechargeable batteries must be recycled from regular solid wastes. A thermal recovery process reclaims the metals and prepares them for use in new products. Supplementary energy consumption and CO2 gas emissions are associated with this process, which would not be negligible for a foreseeable annual production of 10 billion cells. Thus high performing, battery electrodes composed of organic materials would avoid many of the energy costs associated with processing and recovering inorganic cathode materials. Additionally preliminary data on oxocarbon molecules shows the feasibility of reacting up to four electrons per molecule which could have a significant impact on battery capacity.
There are two main components to this program; 1) Creating a new bank of scientific knowledge in designing and synthesizing organic molecules and polymers electrochemically active towards Li, and 2) Practical integration of these materials into laboratory test cells for increased performance and evaluation. To accomplish these objectives, the research tasks are set up around innovative, rapid, and efficient synthesis processes using cheap and clean methods.
Task 1: Synthesis of new electrochemically active organic molecules
Figure 1: Reversible insertion and removal of Li+ ions at four redox centers of a polyquinone.
Task 2: Theoretical Analysis
Task 3: Learning from bio-inspired materials
Task 4: Electrochemical characterization: Cell Performance
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