Carbon fabric supercapacitor structure
First Claim
1. A supercapacitor structure comprising in contiguity a positive electrode member, a negative electrode member, and a separator member interposed therebetween characterized in that a) each of said electrode members comprises an activated carbon fabric element to which is bonded an electrically-conductive current collector element, b) said separator member comprises a micro-fibrillar ultra-high molecular weight polyolefin membrane, and c) each said member is bonded to one or more contiguous members at its respective interface to form a unitary flexible laminate structure.
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Accused Products
Abstract
Supercapacitor cell electrode (13, 17) and separator (15) elements are fabricated from activated carbon fabric and membranes of microporous fibrillar ultra-high molecular weight polyethylene and are laminated with electrically conductive current collector elements (11, 19) to form a flexible, unitary supercapacitor structure (10). The micro-fibrillar laminar structure of the separator membrane material enables direct application of cell lamination temperatures without resulting collapse of separator microporosity and attendant loss of essential electrolyte retention and ionic conductivity. The superior functional materials enable the fabrication of flexible, self-supporting cell structures which yield improved specific energy capacity and increased voltage output for utilization demands.
20 Citations
8 Claims
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1. A supercapacitor structure comprising in contiguity a positive electrode member, a negative electrode member, and a separator member interposed therebetween characterized in that
a) each of said electrode members comprises an activated carbon fabric element to which is bonded an electrically-conductive current collector element, b) said separator member comprises a micro-fibrillar ultra-high molecular weight polyolefin membrane, and c) each said member is bonded to one or more contiguous members at its respective interface to form a unitary flexible laminate structure.
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6. A method of making a supercapacitor structure which comprises arranging contiguously a positive electrode member, a negative electrode member, and a separator member interposed therebetween characterized in that
a) each of said electrode members is formed of an activated carbon fabric element bonded to an electrically-conductive current collector element, b) said separator member is formed of a micro-fibrillar ultra-high molecular weight polyolefin membrane, and c) each said member is bonded to one or more contiguous members at its respect interface to form a unitary flexible laminate structure.
Specification