Hierarchical Pore-Patterned Carbon Electrodes for High-Volumetric Energy Density Micro-Supercapacitors

ACS Applied Materials & Interfaces
Cheolho Kim, Jun Hyuk Moon

Abstract

Micro-supercapacitors (MSCs) are attractive for applications in next-generation mobile and wearable devices and have the potential to complement or even replace lithium batteries. However, many previous MSCs have often exhibited a low volumetric energy density with high-loading electrodes because of the nonuniform pore structure of the electrodes. To address this issue, we introduced a uniform-pore carbon electrode fabricated by 3D interference lithography. Furthermore, a hierarchical pore-patterned carbon (hPC) electrode was formed by introducing a micropore by chemical etching into the macropore carbon skeleton. The hPC electrodes were applied to solid-state MSCs. We achieved a constant volumetric capacitance and a corresponding volumetric energy density for electrodes of various thicknesses. The hPC MSC reached a volumetric energy density of approximately 1.43 mW h/cm3. The power density of the hPC MSC was 1.69 W/cm3. We could control the capacitance and voltage additionally by connecting the unit MSC cells in series or parallel, and we confirmed the operation of a light-emitting diode. We believe that our pore-patterned electrodes will provide a new platform for compact but high-performance energy storage devices.

References

Sep 15, 1996·Physical Review. B, Condensed Matter·J DíazF Comin
Apr 1, 1951·The Journal of Physical and Colloid Chemistry·P DELAHAY, G L STIEHL
Jul 21, 2006·Nature·Sasha StankovichRodney S Ruoff
Sep 16, 2008·Nano Letters·Meryl D StollerRodney S Ruoff
Oct 29, 2008·Nature Materials·Patrice Simon, Yury Gogotsi
Aug 8, 2009·Nature Nanotechnology·Jilin XiaNongjian Tao
Aug 17, 2010·Nature Nanotechnology·David PechPatrice Simon
May 14, 2011·Science·Yanwu ZhuRodney S Ruoff
Sep 18, 2013·Nature Communications·Zhong-Shuai WuKlaus Müllen
May 16, 2015·ACS Nano·Zhiwei PengJames M Tour
Aug 21, 2015·Advanced Materials·Dianpeng QiXiaodong Chen
Oct 1, 2015·Advanced Materials·Anaïs FerrisDavid Pech
May 24, 2016·Advanced Materials·Yuanlong ShaoRichard B Kaner

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Citations

Sep 10, 2020·ACS Applied Materials & Interfaces·Yurong WangBingan Lu

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