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Author |
Wei, M.-T.; Wu, L.; Hu, Z.-Y.; Wu, K.-X.; Sun, J.-Y.; Yin, Z.-W.; Li, Z.-R.; Yang, X.-Y.; Li, Y.; Van Tendeloo, G.; Su, B.-L. |
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Title |
La doping LiNiO₂ cathode to immobilize the lattice oxygen for highly stable lithium-ion batteries |
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A1 Journal article |
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Year  |
2025 |
Publication |
Nano letters |
Abbreviated Journal |
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Volume |
25 |
Issue |
13 |
Pages |
5265-5273 |
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Keywords |
A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT) |
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Abstract |
LiNiO2 (LNO) with a high theoretical capacity and entirely free of cobalt has aroused much attention as a promising cathode material for lithium-ion batteries (LIBs). The rapid capacity decay, however, obstructs its commercialization. We first propose a strategy of La lattice-doping in the LNO (La-LNO) as a high-stability cathode for LIBs. Density-functional theory calculations suggest that the La dopant occupies the Ni-sites to stabilize the lattice oxygen due to a strengthening of the transition metal-oxygen bonds and mitigation of the charge compensation. La lattice-doped LNO cathode materials were fabricated successfully and had a specific capacity of 159.6 mAh g(-1) after 100 cycles at 1 C with a capacity retention of 94.2% and a voltage retention of 99.9%. Atomic characterization reveals that La-LNO effectively inhibits the oxygen release and phase transformation during the cycling process. Our strategy provides leading guidance for designing practical high-performance LNO cathode materials for advanced LIBs. |
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Wos |
WOS:001451869400001 |
Publication Date |
2025-03-25 |
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ISSN |
1530-6984 |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Open Access |
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no |
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Call Number |
UA @ admin @ c:irua:213173 |
Serial |
9444 |
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