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A P2/P3 Biphasic Layered Oxide Composite as a High-Energy and Long-Cycle-Life Cathode for Potassium-Ion Batteries.
Duan, Liping; Shao, Caoyang; Liao, Jiaying; Song, Lili; Zhang, Yingna; Li, Renke; Guo, Shaohua; Zhou, Xiaosi; Zhou, Haoshen.
Afiliación
  • Duan L; School of Chemistry and Materials Science, Nanjing Normal University, 210023, Nanjing, China.
  • Shao C; College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructures, Nanjing University, 210093, Nanjing, China.
  • Liao J; School of Chemistry and Materials Science, Nanjing Normal University, 210023, Nanjing, China.
  • Song L; School of Chemistry and Materials Science, Nanjing Normal University, 210023, Nanjing, China.
  • Zhang Y; School of Chemistry and Materials Science, Nanjing Normal University, 210023, Nanjing, China.
  • Li R; School of Chemistry and Materials Science, Nanjing Normal University, 210023, Nanjing, China.
  • Guo S; College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructures, Nanjing University, 210093, Nanjing, China.
  • Zhou X; School of Chemistry and Materials Science, Nanjing Normal University, 210023, Nanjing, China.
  • Zhou H; College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructures, Nanjing University, 210093, Nanjing, China.
Angew Chem Int Ed Engl ; 63(17): e202400868, 2024 Apr 22.
Article en En | MEDLINE | ID: mdl-38440859
ABSTRACT
Layered transition metal oxides are extensively considered as appealing cathode candidates for potassium-ion batteries (PIBs) due to their abundant raw materials and low cost, but their further implementations are limited by slow dynamics and impoverished structural stability. Herein, a layered composite having a P2 and P3 symbiotic structure is designed and synthesized to realize PIBs with large energy density and long-term cycling stability. The unique intergrowth of P2 and P3 phases in the obtained layered oxide is plainly characterized by X-ray diffraction refinement, high-angle annular dark field and annular bright field-scanning transmission electron microscopy at atomic resolution, and Fourier transformation images. The synergistic effect of the two phases of this layered P2/P3 composite is well demonstrated in K+ intercalation/extraction process. The as-prepared layered composite can present a large discharge capacity with the remarkable energy density of 321 Wh kg-1 and also manifest excellent capacity preservation after 600 cycles of K+ uptake/removal.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Alemania