材料科学
超级电容器
阳极
面积密度
3D打印
阴极
储能
电解质
纳米技术
光电子学
电容
复合材料
电极
电气工程
物理化学
功率(物理)
工程类
化学
物理
量子力学
作者
Kai Shen,Junwei Ding,Shubin Yang
标识
DOI:10.1002/aenm.201800408
摘要
Abstract A 3D printing approach is first developed to fabricate quasi‐solid‐state asymmetric micro‐supercapacitors to simultaneously realize the efficient patterning and ultrahigh areal energy density. Typically, cathode, anode, and electrolyte inks with high viscosities and shear‐thinning rheological behaviors are first prepared and 3D printed individually on the substrates. The 3D printed asymmetric micro‐supercapacitor with interdigitated electrodes exhibits excellent structural integrity, a large areal mass loading of 3.1 mg cm −2 , and a wide electrochemical potential window of 1.6 V. Consequently, this 3D printed asymmetric micro‐supercapacitor displays an ultrahigh areal capacitance of 207.9 mF cm −2 . More importantly, an areal energy density of 73.9 µWh cm −2 is obtained, superior to most reported interdigitated micro‐supercapacitors. It is believed that the efficient 3D printing strategy can be used to construct various asymmetric micro‐supercapacitors to promote the integration in on‐chip energy storage systems.
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