Details

Autor(en) / Beteiligte

• Mai, Li-Qiang
• Yang, Fan
• Zhao, Yun-Long
• Xu, Xu
• Xu, Lin
• Luo, Yan-Zhu

Titel

Hierarchical MnMoO4/CoMoO4 heterostructured nanowires with enhanced supercapacitor performance

Ist Teil von

• Nature communications, 2011-07, Vol.2 (1), p.381, Article 381

Ort / Verlag

London: Nature Publishing Group

Erscheinungsjahr

2011

Link zum Volltext

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• Recent attention has been focused on the synthesis and application of complex heterostructured nanomaterials, which can have superior electrochemical performance than single-structured materials. Here we synthesize the three-dimensional (3D) multicomponent oxide, MnMoO 4 /CoMoO4 . Hierarchical heterostructures are successfully prepared on the backbone material MnMoO4 by a simple refluxing method under mild conditions; and surface modification is achieved. We fabricate asymmetric supercapacitors based on hierarchical MnMoO4 /CoMoO4 heterostructured nanowires, which show a specific capacitance of 187.1 F g-1 at a current density of 1 A g-1 , and good reversibility with a cycling efficiency of 98% after 1,000 cycles. These results further demonstrate that constructing 3D hierarchical heterostructures can improve electrochemical properties. 'Oriented attachment' and 'self-assembly' crystal growth mechanisms are proposed to explain the formation of the heterostructures.