High capacitance energy storage device

Details High capacitance energy storage device High capacitance energy storage device

H - Electricity

01

G

H01G 9/155 (2006.01)

Patent

CA 2347224

A high capacitance energy storage device where electrodes (20, 22) are formed of layers of a carbonised, activated woven fabric that has been impregnated with an electrolyte. The electrolyte is absorbed by active centers at the surface of the carbonised, activated material. The prepared fabric is sandwiched between alternating graphite-based separators (16, 18) and non- conductive membranes (24) to form a capacitor structure exhibiting very high capacitance, non-degradation over multiple charging/discharging cycles, and, in AC installations, reliable and reproducible characteristics. In addition, the materials in the device are environmentally friendly.

Cette invention se rapporte à un dispositif de stockage d'énergie de forte capacitance, dans lequel des électrodes (20, 22) sont formées de couches d'une toile tissée activée carbonisée, ayant été imprégnée avec un électrolyte. L'électrolyte est absorbé par des centres actifs à la surface du matériau activé carbonisé. La toile ainsi préparée est prise en sandwich entre des séparateurs à base de graphite (16, 18) et des membranes non conductrices (24) qui alternent, de façon à former une structure de condensateur présentant une très forte capacitance, l'avantage de ne pas subir de dégradations après de multiples cycles de charge/décharge et, dans des installations à courant alternatif, des caractéristiques fiables et reproductibles. En outre, les matériaux de ce dispositif sont non polluants.

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