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摘要
A flexible all-solid-state asymmetric micro-supercapacitor based on lamellar (K2Co3(P2O7)2·2H2O) nanocrystal whiskers and graphene nanosheets was successfully fabricated by inkjet printing in a simple and cost-effective way. A facile method to synthesize lamellar K2Co3(P2O7)2·2H2O nanocrystal whiskers under a mild hydrothermal condition was also established. The assembled micro-device exhibited a high specific capacitance (6.0 F cm−3), good rate/mechanical stability and a long cycling stability (5000 cycles) with a maximun energy density of 0.96 mW h cm−3, demonstrating great promise for applications in flexible all-solid-state micro-supercapacitors.
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FlexibilityHigh-performancePotassium cobalt phosphateSupercapacitorChoose an option to locate/access this article:
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Huan Pang received his Ph. D. degree from Nanjing University in 2011. He then founded his research group in Anyang Normal University where he was appointed as a distinguished professor in 2013. Now, he also jointed Yangzhou University as a distinguished professor. His research interests include the development of inorganic semiconductors nanostructures and their applications in flexible electronics and printable electronics.@#
@Yi-Zhou Zhang received his B.S.c from Department of Chemistry and Chemical Engineering of Nanjing University in 2010, after which he has been studying as a PhD candidate under Professor Wei Huang׳s and Professor Wen-Yong Lai׳s supervision. His current research focuses on flexible and stretchable energy storage devices with the special focus on supercapacitors. He is also interested in using inkjet printing as a fabrication tool for electronics.@#
@Wen-Yong Lai is a professor at Nanjing University of Posts and Telecommunications. He received his Ph.D from Fudan University in 2007. He then joined the Key Laboratory for Organic Electronics & Information Displays and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications. His research mainly focuses on the design, synthesis, and application of organic & polymer optoelectronic materials for organic/plastic electronics. He is also interested in the exploration of novel materials and processes for printed/flexible electronics.@#
@Zheng Hu received his BS (1985) and Ph.D. (1991) degrees in physics from Nanjing University. After two-year׳s postdoctoral research in Department of Chemistry, he became an associate professor in 1993, and subsequently acquired the professor position in 1999, and Cheung Kong Scholar professor in 2007. He is the owner of the highly competitive NSFC fund for outstanding young scientists of China (2005). As a guest scientist, he visited Research Center of Karlsruhe (Germany), University of Cambridge (UK), and MIT (USA) for two years. Hu is engaged in the research field of physical chemistry and materials chemistry addressing the growth mechanism, materials design and energy applications of a range of nano-/mesostructured materials, especially the carbon-based materials and group III nitrides.@#
@Wei Huang received his PhD degree from Peking University in 1992. In 1993, he began his postdoctoral research in the National University of Singapore (NUS) and then taught at the Department of Chemical Engineering, NUS. In 2001, he was appointed as Chair Professor with Fudan University, where he founded and chaired the Institute of Advanced Materials (IAM). In 2006, he was appointed as Deputy President of the Nanjing University of Posts and Telecommunications. 2012, he assumed his duty as the President of the Nanjing Tech University (NanjingTech). He was elected as Academician of the Chinese Academy of Sciences in 2011. His research interests include organic/plastic/flexible (opto)electronics, nanomaterials, nanotechnology, etc.
