| Download | - View final version: Accelerated removal of Fe-antisite defects while nanosizing hydrothermal LiFePO₄ with Ca²⁺ (PDF, 1.3 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1021/acs.nanolett.6b00334 |
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| Author | Search for: Paolella, Andrea; Search for: Turner, Stuart; Search for: Bertoni, Giovanni; Search for: Hovington, Pierre; Search for: Flacau, Roxana1; Search for: Boyer, Chad1; Search for: Feng, Zimin; Search for: Colombo, Massimo; Search for: Marras, Sergio; Search for: Prato, Mirko; Search for: Manna, Liberato; Search for: Guerfi, Abdelbast; Search for: Demopoulos, George P.; Search for: Armand, Michel; Search for: Zaghib, Karim |
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| Affiliation | - National Research Council Canada. Security and Disruptive Technologies
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| Format | Text, Article |
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| Subject | Antisite; LiFePO₄; calcium; surface; defects; hydrothermal |
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| Abstract | Based on neutron powder diffraction (NPD) and high angle annular dark field scanning transmission electron microscopy (HAADF-STEM), we show that calcium ions help eliminate the Fe-antisite defects by controlling the nucleation and evolution of the LiFePO₄ particles during their hydrothermal synthesis. This Ca-regulated formation of LiFePO₄ particles has an overwhelming impact on the removal of their iron antisite defects during the subsequent carbon-coating step since (i) almost all the Fe-antisite defects aggregate at the surface of the LiFePO₄ crystal when the crystals are small enough and (ii) the concomitant increase of the surface area, which further exposes the Fe-antisite defects. Our results not only justify a low-cost, efficient and reliable hydrothermal synthesis method for LiFePO₄ but also provide a promising alternative viewpoint on the mechanism controlling the nanosizing of LiFePO₄, which leads to improved electrochemical performances. |
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| Publication date | 2016-03-11 |
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| Publisher | ACS Publications |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 23000355 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 9c4e096d-0c16-4cab-a2cd-5894bdc25dec |
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| Record created | 2016-07-08 |
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| Record modified | 2020-06-02 |
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