Journal
CERAMICS INTERNATIONAL
Volume 46, Issue 18, Pages 28200-28205Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2020.07.319
Keywords
In-situ growth; Manganese ferrites; Graphene; Supercapacitors
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Funding
- Key Research and Development Program of Shandong Province [2019GGX103050]
- Natural Science Foundation of Shandong Province [ZR2018BB046, ZR2017BB008]
- National Natural Science Foundation of China [21805168]
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Electrode materials play a key role in supercapacitors, and the structural design of electrode materials is supposed to be given priority to improve capacitive performances. Herein, manganese ferrite nanorods/graphene composites are fabricated by a one-step, in situ hydrothermal method. In situ growth of manganese ferrite nanorods ensures good interfacial contact between nanorods and graphene, endowing the composites with rapid charge transfer and superior cyclic performance. The as-synthesized composites yield specific capacitances of 537.7 and 187.7 F/g at current densities of 0.5 and 10 A/g, respectively. Furthermore, their capacity retention is 87.7% after 20000 cycles at 1 A/g, indicating exceptional cyclic performance. Such excellent capacitive performances are due to fast charge transport and good structural stability, which derived from the in-situ growth of manganese ferrite nanorods on the graphene.
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