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NiO@MnO2 core–shell composite microtube arrays for high-performance lithium ion batteries
| Content Provider | Semantic Scholar |
|---|---|
| Author | Zhong, Yuan Huang, Huan Wang, Kai He, Zhishun Zhu, Shasha Chang, Ling Shao, Haibo Wang, Jianming Cao, Chunan |
| Copyright Year | 2017 |
| Abstract | Tubular array structures are very attractive for electrochemical energy storage and conversion systems due to their unique physicochemical properties. Herein, a NiO microtube array is fabricated via a facile oxalic acid corrosion method followed by heat treatment. A NiO@MnO2 core–shell composite microtube array is further achieved by the anodic electrodeposition using the NiO microtube array as substrate. When applied as self-supported electrode for lithium ion batteries (LIBs), the NiO@MnO2 core–shell composite microtube array electrode shows excellent lithium storage properties. The electrode delivers a reversible capacity of 510 mA h g−1 at a high rate of 5.1 A g−1, showing its good rate capability. In particular, a reversible capacity of 1573 mA h g−1 is observed after 500 cycles at a current density of 0.53 A g−1, demonstrating the superior cycling performance of the electrode. The electrodeposited MnO2 layer as a protective shell prevents the NiO microtubes from deformation during electrochemical cycling, responsible for the superior cycle stability of the NiO@MnO2 core–shell composite microtube array electrode. The prominent lithium storage performance of the composite microtube array electrode can be attributed to its unique structure characteristics. |
| Starting Page | 4840 |
| Ending Page | 4847 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C6RA25463B |
| Volume Number | 7 |
| Alternate Webpage(s) | https://pubs.rsc.org/en/content/articlepdf/2017/ra/c6ra25463b |
| Alternate Webpage(s) | https://doi.org/10.1039/C6RA25463B |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
