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US 9,520,618 B2Granted
Electrochemical energy storage devices
AssigneeAmbri Inc.
InventorsDavid J. Bradwell, Alex T. Vai, Tom Kinney, Sean Theriault, Garrett Lau
Life of this patent
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Abstract
Pressure relief mechanisms can provide an outlet for cathode pressure buildup during battery operation. Mechanical cathode modifications can control cathode interfaces during battery operation. Pressure relief mechanisms and mechanical modifications can be utilized to improve performance, longevity and/or to prevent failure of batteries, such as during cycling of liquid metal batteries.
Claims20
An energy storage device, comprising:
- a first electrode comprising a first material, a second electrode comprising a second material, and a liquid electrolyte between said first and second electrodes, wherein said liquid electrolyte is capable of conducting ions from said first material at an operating temperature of said energy storage device, wherein upon discharge of said energy storage device said first and second materials react to form an intermetallic layer at an interface between said second electrode and said electrolyte, which intermetallic layer is solid or semi-solid at said operating temperature;
- a sheath or liner adjacent to said second electrode, wherein said sheath or liner is non-wetting with respect to said second material;
- and
- wherein said sheath or liner comprises graphite.
1 more element
Dependencies are inferred from the claim text.