Flexible all solid state supercapacitor with high energy density employing black titania nanoparticles as a conductive agent

Nanoscale
Jian ZhiFuqiang Huang

Abstract

Increasing the electrical conductivity of pseudocapacitive materials without changing their morphology is an ideal structural solution to realize both high electrochemical performance and superior flexibility for an all solid state supercapacitor (ASSSC). Herein, we fabricate a flexible ASSSC device employing black titania (TiO2-x:N) decorated two-dimensional (2D) NiO nanosheets as the positive electrode and mesoporous graphene as the negative electrode. In this unique design, NiO nanosheets are used as pseudocapacitive materials and TiO2-x:N nanoparticles serve as the conductive agent. Owing to the excellent electrical conductivity of TiO2-x:N and well defined "particle on sheet" planar structure of NiO/TiO2-x:N composites, the 2D morphology of the decorated NiO nanosheets is completely retained, which efficiently reinforces the pseudocapacitive activity and flexibility of the whole all solid state device. The maximum specific capacitance of fabricated the NiO/TiO2-x:N//mesoporous graphene supercapacitor can reach 133 F g(-1), which is 2 and 4 times larger than the values of the NiO based ASSSC employing graphene and carbon black as the conductive agent, respectively. In addition, the optimized ASSSC displays intriguing perfor...Continue Reading

References

Jan 18, 2005·Chemical Communications : Chem Comm·Stefano LivraghiElio Giamello
May 4, 2005·Nature Materials·Antonino Salvatore AricòWalter van Schalkwijk
Sep 14, 2010·Nano Letters·Chuizhou MengShoushan Fan
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Mar 1, 2012·Nano Letters·Xihong LuYat Li
May 2, 2012·ACS Applied Materials & Interfaces·Hongcai GaoHongwei Duan
Oct 30, 2013·Journal of the American Chemical Society·Chongyin YangMianheng Jiang
Jan 21, 2015·Physical Chemistry Chemical Physics : PCCP·Jian ZhiFuqiang Huang

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Citations

Jan 28, 2017·Angewandte Chemie·Mario ChiesaGianfranco Pacchioni
Oct 24, 2017·Current Opinion in Nephrology and Hypertension·Usha Panchapakesan, Carol Pollock
Oct 4, 2017·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·Valentina MasolaMaurizio Onisto
Feb 14, 2018·Journal of the American Society of Nephrology : JASN·Maroua FerhatAntoine Thierry
Dec 8, 2020·Frontiers in Chemistry·Luminita Andronic, Alexandru Enesca
Sep 19, 2018·ACS Applied Materials & Interfaces·Reza KatalJiangyong Hu
Sep 4, 2021·ChemSusChem·Aikaterini TouniAthanasios Chatzitakis

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