期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 199, 期 -, 页码 543-551出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2017.07.050
关键词
CeO2-LaMnO3; Negative electrode; Asymmetric device; Supercapacitor
资金
- Priority Research Centers Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology (MEST) of the Korean government [2009-0093818]
CeO2 mixed LaMnO3 nanocomposites were synthesized using a hydrothermal route. Sodium dodecyl sulfate was used as the surfactant. Cerium oxide was mixed in the LaMnO3 perovskite nanoparticles and the crystal structure was confirmed by X-ray diffraction and X-ray photoelectron spectroscopy. Field emission scanning electron microscopy and high-resolution transmission electron were used to identify the morphology of the prepared nanoparticles. The CeO2 mixedLaMnO(3) nanocomposites exhibited a mesopore size and high surface area in the N-2 adsorption/desorption measurements. Three electrode measurements indicate the CeO2 mixed LaMnO3 nanocomposites to be a suitable negative electrode material for supercapacitor device fabrication and exhibited a high specific capacitance of 262 F g(-1) at a specific current of 1 A g(-1). The asymmetric supercapacitor device showed a maximum energy density of 17.2 W h kg(-1) at a power density of 1015 w kg(-1). These electrochemical studies show that CeO2 mixed LaMnO3 nanocomposites are an appropriate negative electrode material for supercapacitor device fabrication. (C) 2017 Elsevier B.V. All rights reserved.
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