Cation and anion Co-doping synergy to improve structural stability of Li-and Mn-rich layered cathode materials for lithium-ion batteries
Article
Chen, Guorong, An, Juan, Meng, Yiming, Yuan, Changzhou, Matthews, Bryan, Dou, Fei, Shi, Liyi, Zhou, Yongfeng, Song, Pingan, Wu, Gang and Zhang, Dengsong. 2019. "Cation and anion Co-doping synergy to improve structural stability of Li-and Mn-rich layered cathode materials for lithium-ion batteries." Nano Energy. 57, pp. 157-165. https://doi.org/10.1016/j.nanoen.2018.12.049
| Article Title | Cation and anion Co-doping synergy to improve structural stability of Li-and Mn-rich layered cathode materials for lithium-ion batteries |
|---|---|
| ERA Journal ID | 201288 |
| Article Category | Article |
| Authors | Chen, Guorong (Author), An, Juan (Author), Meng, Yiming (Author), Yuan, Changzhou (Author), Matthews, Bryan (Author), Dou, Fei (Author), Shi, Liyi (Author), Zhou, Yongfeng (Author), Song, Pingan (Author), Wu, Gang (Author) and Zhang, Dengsong (Author) |
| Journal Title | Nano Energy |
| Journal Citation | 57, pp. 157-165 |
| Number of Pages | 9 |
| Year | 2019 |
| Publisher | Elsevier |
| Place of Publication | Netherlands |
| ISSN | 2211-2855 |
| 2211-3282 | |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.nanoen.2018.12.049 |
| Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S2211285518309625 |
| Abstract | Cobalt-free Li and Mn-rich layered cathode materials are promising for next generation lithium ion batteries due to their high specific capacity and low cost. However, these materials are facing serious issues, such as structural collapse due to volume shrinkage during Ni2+ oxidation to Ni4+ and oxygen vacancy generation over 4.5V. In this work, we report a strategy to address the issue of volume shrinkage caused by structural deformation via constructing a large-size rigid frame by simultaneously doping inactive and large radius atoms of Cd and S. This strategy significantly reduces the volume shrinkage when fully delithiated relative to the pristine material. The Cd- and S-doped cathode materials present a highly reversible structure, which were determined by using HAADF-STEM and in-situ XRD characterization. The doped Cd and S atoms act as supporting atoms and synergistically enlarge the layer spacing of crystalline from 0.455 to 0.483 nm. The in-situ XRD monitors the structural changes in real time during charging and discharging processes, further verifying structural stability during cycling. Due to the unique structural properites, an initial capacity of 268.5 mAh g−1 at 0.1 C along with a good rate capacity of 153.8 mAh g−1 at 5 C were achieved. Also, a capacity of 243.4 mAh g-1 at 0.1 C over 80 cycles indicate good cyclic stability of the co-doped Li- and Mn-rich layered cathode. |
| Keywords | lLayered cathode materials; doping; Li and Mn rich; inactive frame; lithium ion battery |
| Contains Sensitive Content | Does not contain sensitive content |
| ANZSRC Field of Research 2020 | 400899. Electrical engineering not elsewhere classified |
| Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
| Institution of Origin | University of Southern Queensland |
| Byline Affiliations | Shanghai University, China |
| University of Shanghai for Science and Technology, China | |
| University of Jinan, China | |
| State University of New York, United States | |
| Shanghai Jiao Tong University, China | |
| Centre for Future Materials |
Permalink -
https://research.usq.edu.au/item/q503q/cation-and-anion-co-doping-synergy-to-improve-structural-stability-of-li-and-mn-rich-layered-cathode-materials-for-lithium-ion-batteries
288
total views12
total downloads4
views this month0
downloads this month