High-Energy, Long-Life Lithium-Sulfur Batteries
Navy SBIR FY2015.2
Sol No.: |
Navy SBIR FY2015.2 |
Topic No.: |
N152-093 |
Topic Title: |
High-Energy, Long-Life Lithium-Sulfur Batteries |
Proposal No.: |
N152-093-0540 |
Firm: |
TDA Research, Inc. 12345 W. 52nd Ave.
Wheat Ridge, Colorado 80033 |
Contact: |
Steven Dietz |
Phone: |
(303) 940-2312 |
Abstract: |
Batteries with multi-electron redox materials offer promise for increased performance relative to state of the art lithium-ion batteries. Lithium-sulfur (Li-S) batteries have two electron cathode materials (in addition to a lithium metal anode) and better than two times the specific energy of Li-ion batteries. However, several issues have prevented Li-S batteries from becoming more commercially viable. The sulfur cathode is both ionically and electronically insulating and so requires a conductive matrix. In addition, cycle life is limited by diffusion of polysulfides to the anode where they are reduced to Li-S2 and become inactive; historically the cycle life has been relatively poor ( |
Benefits: |
Batteries with multi-electron redox materials offer promise for increased performance relative to state of the art lithium-ion batteries. Lithium-sulfur (Li-S) batteries have two electron cathode materials (in addition to a lithium metal anode) and better than two times the specific energy of Li-ion batteries. However, several issues have prevented Li-S batteries from becoming more commercially viable. The sulfur cathode is both ionically and electronically insulating and so requires a conductive matrix. In addition, cycle life is limited by diffusion of polysulfides to the anode where they are reduced to Li-S2 and become inactive; historically the cycle life has been relatively poor ( |
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