Shape-Controlled Synthesis of NiCo2O4and Its Supercapacitive Performance

ChemistrySelectVolume 2, Issue 28 p. 8959-8964 Full Paper Shape-Controlled Synthesis of NiCo2O4 and Its Supercapacitive Performance Dr. Yanhua Li, Dr. Yanhua Li Hunan Province Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha, 410022 ChinaSearch for more papers by this authorProf. Xiahui Peng, Corresponding Author Prof. Xiahui Peng pxiahui630527@126.com Hunan Province Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha, 410022 ChinaSearch for more papers by this author Dr. Yanhua Li, Dr. Yanhua Li Hunan Province Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha, 410022 ChinaSearch for more papers by this authorProf. Xiahui Peng, Corresponding Author Prof. Xiahui Peng pxiahui630527@126.com Hunan Province Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha, 410022 ChinaSearch for more papers by this author First published: 05 October 2017 https://doi.org/10.1002/slct.201701970Citations: 3Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Graphical Abstract The morphology of NiCo2O4 was controlled by a hydrothermal method through changing surfactants and the effect of different surfactants on the capacitive properties of NiCo2O4 was studied. Compared with NiCo2O4 prepared without any surfactants, NiCo2O4 synthesized with addition of sodium dodecyl sulfate shows higher specific capacitance and good cycling stability. Whereas, NiCo2O4 prepared with addition of Triton X-100 or cetyl trimethyl ammonium bromide exhibits lower specific capacitance and relatively poor cycling stability. Abstract NiCo2O4 was obtained by a hydrothermal synthesis method through adjusting different types of surfactants, followed by calcining at 350 °C. X-ray diffraction analyses demonstrate that addition of surfactant affects the crystallite size and the phase purity of NiCo2O4. Scanning electron microscopy images show that addition of sodium dodecyl sulfate has a great influence on the morphology of NiCo2O4. However, the morphology of NiCo2O4 prepared with addition of Triton X-100 or cetyl trimethyl ammonium bromide slightly change. Cyclic voltammetry and chronopotentiometry of NiCo2O4 was studied by electrochemical workstation. Results show that addition of surfactants have a great influence on its capacitive performance. Compared with NiCo2O4 prepared without any surfactants, NiCo2O4 synthesized with addition of sodium dodecyl sulfate shows higher specific capacitance. However, NiCo2O4 obtained with addition of Triton X-100 or cetyl trimethyl ammonium bromide exhibits lower specific capacitance. Meanwhile, NiCo2O4 synthesized with addition of sodium dodecyl sulfate shows better cycling stability than that synthesized without any surfactants, with addition of Triton X-100 or cetyl trimethyl ammonium bromide. Conflict of interest The authors declare no conflict of interest. Citing Literature Supporting Information As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Filename Description slct201701970-sup-0001-misc_information.pdf136.8 KB Supplementary Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. Volume2, Issue28September 29, 2017Pages 8959-8964 RelatedInformation