期刊
ADVANCED FUNCTIONAL MATERIALS
卷 29, 期 50, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201902860
关键词
flexibility; graphene; integrated micro-supercapacitors; performance uniformity; scalable fabrication
类别
资金
- National Key R&D Program of China [2016YFA0200200]
- National Natural Science Foundation of China [51572259, 51872283, 21805273]
- LiaoNing Revitalization Talents Program [XLYC1807153]
- Natural Science Foundation of Liaoning Province [20180510038]
- Dalian National Laboratory For Clean Energy (DNL), CAS, DICP [DICP ZZBS201708, DICP ZZBS201802]
- DICPQIBEBT [UN201702]
- DNL Cooperation Fund, CAS [DNL180310, DNL180308]
The rapid development of miniature electronics has accelerated the demand for simplified and scalable production of micro-supercapacitors (MSCs); however, the preparation of active materials, patterning microelectrodes, and subsequent modular integration of the reported MSCs are normally separated and are involved in multiple complex steps. Herein, a one-step, cost-effective strategy for fast and scalable fabrication of patterned laser-induced graphene (LIG) for all-solid-state planar integrated MSCs (LIG-MSCs) with various form factors of designable shape, exceptional flexibility, performance uniformity, superior modularization, and high-temperature stability is demonstrated. Notably, using the conductive and porous LIG patterns composed of randomly stacked graphene nanosheets simultaneously acting as both microelectrodes and interconnects, the resulting LIG-MSCs represent typical electrical double capacitive behavior, having an impressive areal capacitance of 0.62 mF cm(-2) and long-term stability without capacitance degeneration after 10 000 cycles. Furthermore, LIG-MSCs display exceptional mechanical flexibility and adjustable voltage and capacitance output through arbitrary arrangement of cells connected in series and in parallel, indicative of exceptional performance customization. Moreover, all-solid-state LIG-MSCs working at ionogel electrolyte exhibit highly stable performance even at high temperature of 100 degrees C, with 90% capacitance retention over 3000 cycles, suggestive of outstanding reliability. Therefore, the LIG-MSCs offer tremendous opportunities for miniature power source-integrated microelectronics.
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