Publications by authors named "Caoyang Shao"
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.
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- Layered oxides are promising materials for potassium-ion batteries (KIBs) but face challenges like slow kinetics and structural instability.
- The introduction of high-entropy design in layered KIB cathodes, exemplified by the HE-KMO compound, improves these issues through multielement doping.
- HE-KMO shows enhanced electronic properties, better electrochemical stability, and reduced capacity loss over cycles compared to traditional low-entropy materials.