CPC H01M 10/052 (2013.01) [H01M 4/0445 (2013.01); H01M 4/134 (2013.01); H01M 4/1395 (2013.01); H01M 4/38 (2013.01); H01M 4/405 (2013.01); H01M 10/0562 (2013.01); H01M 10/0585 (2013.01); H01M 10/44 (2013.01); H01M 4/382 (2013.01)] | 17 Claims |
1. A thin-film lithium ion battery, comprising:
a LiPON-type electrolyte layer;
a copper electrode;
a metal lithium layer between the LiPON-type electrolyte layer and the copper electrode; and
in both a charged state and a discharged state, a plurality of metal lithium pillars spaced apart from one another and each extending from a surface of the copper electrode that contacts the metal lithium layer into the copper electrode, the plurality of metal lithium pillars being formed by:
slowly charging the battery under a constant current for a first time period; and
a homogenous metal lithium layer between the plurality of metal lithium pillars and the electrolyte layer, the homogenous metal lithium layer being formed by:
quickly charging the battery for a second time period after the first time period.
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