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Compact Assembly and Programmable Integration of Supercapacitors
Author(s) -
Lu Bing,
Liu Feng,
Sun Guoqiang,
Gao Jian,
Xu Tong,
Xiao Yukun,
Shao Changxiang,
Jin Xuting,
Yang Hongsheng,
Zhao Yang,
Zhang Zhipan,
Jiang Lan,
Qu Liangti
Publication year - 2020
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201907005
Subject(s) - materials science , supercapacitor , capacitance , capacitive sensing , optoelectronics , planar , volume (thermodynamics) , nanotechnology , electrical engineering , electrode , computer science , engineering , chemistry , computer graphics (images) , physics , quantum mechanics
Microsized supercapacitors (mSCs) with small volume, rapid charge–discharge rate, and ultralong cyclic lifetime are urgently needed to meet the demand of miniaturized portable electronic devices. A versatile self‐shrinkage assembling (SSA) strategy to directly construct the compact mSCs (CmSCs) from hydrogels of reduced graphene oxide is reported. A single CmSC is only 0.0023 cm 3 in volume, which is significantly smaller than most reported mSCs in fiber/yarn and planar interdigital forms. It exhibits a high capacitance of up to 68.3 F cm −3 and a superior cycling stability with 98% capacitance retention after 25 000 cycles. Most importantly, the SSA technique enables the CmSC as the building block to realize arbitrary, programmable, and multi‐dimensional integration for adaptable and complicated power systems. By design on mortise and tenon joint connection, autologous integrated 3D interdigital CmSCs are fabricated in a self‐holding‐on manner, which thus dramatically reduces the whole device volume to achieve the high‐performance capacitive behavior. Consequently, the SSA technique offers a universal and versatile approach for large‐scale on‐demand integration of mSCs as flexible and transformable power sources.