High Energy-Density Polymer Electrolytes for Batteries and Energy Storage
Greater conductivities than the current standard Operation at room temperature or colder without additives Decreased complexity of battery design Improved battery energy density Increased battery safety
Lithium-ion batteries Energy storage devices
Researchers at the University of California, Santa Barbara have developed a novel composition for a non-volatile polymer electrolyte that is applicable in batteries. At room temperature and without additives, it has conductivities orders of magnitude higher than the standard polymer electrolyte PEO. This allows for an additive-free and thus less complex design that operates at room temperature or below. In addition, the non-volatile polymer electrolyte may be incorporated in a solid material that provides safe separation of the cathode and anode, both increasing the energy density and safety of batteries.
Patent Number: US20120326073A1
Application Number: US13329179A
Inventor: Lynd, Nathaniel A. | Fredrickson, Glenn H. | Hawker, Craig J. | Kramer, Edward J. | Barteau, Kate
Priority Date: 16 Dec 2010
Priority Number: US20120326073A1
Application Date: 16 Dec 2011
Publication Date: 27 Dec 2012
IPC Current: H01G0009025 | H01G0009035 | H01M001004 | H01M0010056
US Class: 2520622 | 0295921 | 429309 | 429314 | 429316 | 429317
Title: POLYMER ELECTROLYTES BASED ON POLY(GLYCIDYL ETHER)S
Usefulness: POLYMER ELECTROLYTES BASED ON POLY(GLYCIDYL ETHER)S
Summary: (A) is useful in a device comprising a battery (preferred), a capacitor, a transistor, and an electrochromic window (all claimed).
Novelty: Polymer electrolyte composition, useful in device e.g. battery, capacitor and transistor, comprises metal salt and polymer comprising poly(glycidyl ether), which is amorphous at ambient temperature
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Background As our energy economy begins to rely on renewable, but more intermittent, energy sources such as solar and wind, high energy density storage will become increasingly important. Polymer electrolytes hold promise for the development of higher energy density lithium-ion batteries. The current standard uses polyethylene oxide (PEO) containing block polymers, which have good electrode separation but poor conductivity at room temperature. Ion solvent additives raise the conductivity at room temperature, but decrease the integrity of the electrode separation and thus decrease the attainable energy density. Therefore, there is a need for battery materials that allow for operation at room temperature and high energy densities. Additional Technologies by these Inventors Tech ID/UC Case 21352/2011-072-0 Related Cases 2011-072-0
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