Synthesis and Properties of a Photopatternable Lithium-Ion Conducting Solid Electrolyte.
basic_science · Level V
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- Record sourced from PubMed, PMID 29134699.
- Also identified by DOI 10.1002/adma.201703772.
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Abstract
One of the important considerations for the development of on-chip batteries is the need to photopattern the solid electrolyte directly on electrodes. Herein, the photopatterning of a lithium-ion conducting solid electrolyte is demonstrated by modifying a well-known negative photoresist, SU-8, with LiClO<sub>4</sub> . The resulting material exhibits a room temperature ionic conductivity of 52 µS cm<sup>-1</sup> with a wide electrochemical window (>5 V). Half-cell galvanostatic testing of 3 µm thin films spin-coated on amorphous silicon validates its use for on-chip energy-storage applications. The modified SU-8 possesses excellent mechanical integrity, is thermally stable up to 250 °C, and can be photopatterned with micrometer-scale resolution. These results present a promising direction for the integration of electrochemical energy storage in microelectronics.