EN

S.H. Zheng, J.M. Ma, Z.-S. Wu*, F. Zhou, Y. B. He*, F. Y. Kang, H.-M. Cheng, X. H. Bao
Energy & Environmental Science, 2018, 11, 2001-2009.
DOI:10.1039/C8EE00855H [PDF]

发布时间:2018-05-31    栏目名称:2018

S.H. Zheng, J.M. Ma, Z.-S. Wu*, F. Zhou, Y. B. He*, F. Y. Kang, H.-M. Cheng, X. H. Bao
Energy & Environmental Science, 2018, 11, 2001-2009.
DOI:10.1039/C8EE00855H [PDF]


The ever-increasing boom in smart yet miniaturized electronics urgently requires on-chip energy storage systems with high performance, safety, flexibility, and robust integration, but tremendous challenges exist. Here we demonstrate the first prototype of all-solid-state planar lithium ion micro-capacitors (LIMCs) based on interdigital patterns of lithium titanate nanospheres as anode and activated graphene as cathode. The interdigital LIMCs were fabricated via layer-by-layer mask-assisted deposition of graphene and electrode materials, without metal current collector, additive and polymer binder. The as-assembled LIMCs delivered the record volumetric energy density of 53.5 mWh cm-3. Furthermore, they exhibited outstanding mechanical flexibility without performance degradation under repeated bending, superior electrochemical metrics and safety at high temperature of 80 oC due to high-stable ionogel electrolyte and free of separator, and remarkably modular integration of constructing bipolar cells for boosting high voltage, thereby holding great potential for future flexible and wearable electronics.

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