| 摘要 |
A rechargeable battery is provided comprising a flexible elongate electron conductive core ( 1 ) surrounded by a first electrochemically active layer ( 2 ), and a second electrochemically active layer ( 4 ), separated by a separation layer ( 3 ) and where an electron conducting element ( 5 ) contacts the outer surface of the second electrochemically active layer, whereby at least one of the two electrochemically active layers ( 2, 4 ) and the separation layer ( 3 ) are comprised of thin-film layers. Further a hearing aid is provided wherein a battery comprising thin film layers is provided. Such a battery may be curled or wound to accommodate an irregular space inside the hearing aid.
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