Synthesis of polyaniline shell on nickel oxide nanoflake arrays for enhanced lithium ion storage
- Shandong Provincial Key Laboratory of Optics and Photonic device, School of Physics and Electronics, Shandong Normal University, Jinan, 250014 (China)
- Wenzhou Environmental Monitoring Center Station, Wenzhou, 35000 (China)
- Hang Zhou Institute of Calibration and Testing for Quality and Technical Supervision, Hangzhou, 310019 (China)
- Research Institute of Narada Power Source Co., Ltd., Hangzhou, 311305 (China)
Graphical abstract: Self-supported NiO/PANI core/shell arrays are prepared by successive electrodeposition methods and exhibit good lithium ion storage with high capacity & stable cycling life. - Highlights: • Construct self-supported porous NiO/PANI core/shell arrays. • Porous NiO/PANI composite arrays show high capacity and good cycling life. • Hierarchical porous structure is favorable for fast ion/electron transfer. - Abstract: Developing conducting polymer/oxide composites are of great importance to construct advanced electrochemical devices. In this work, we report a successive electrodeposition methods to fabricate polyaniline (PANI) on nickel oxide (NiO) nanoflake forming composite core-shell arrays. A thin layer of PANI of ∼10 nm is successfully coated on the surface of NiO nanoflake core. High porosity and enhanced conductivity are obtained in this composite electrode. As anode materials for lithium ion batteries, the NiO/PANI core-shell arrays exhibit weaker polarization and better cycling performance as compared to the bare NiO film. The second discharge capacity of NiO/PANI composite arrays is about 780 mAh g{sup −1} at 0.1 A g{sup −1}, higher than that of the bare NiO film (679 mAh g{sup −1}). The improvements of the electrochemical properties are attributed to the PANI, which forms a uniform conductive network leading to improved electrochemical performance.
- OSTI ID:
- 22730483
- Journal Information:
- Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 96; ISSN MRBUAC; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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