| 标题 |
Boosting Fast-Charging Performance of Ni-Rich NCM9055 Cathodes with Nb2O5 Dual Functional Modification |
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| DOI | |
| 其它 | boundaries. This phase, forming before high-temperature grain growth, acts as a structural modulator to preserve the desirable radial alignment of primary particles by impeding random grain growth. It also functions as an interfacial conductor, creating fast Li+ diffusion pathways along the grain boundaries. These structural and interfacial modifications synergistically mitigate chemical inhomogeneity and relieve accumulated strain during cycling. Consequently, the Nb-modified NCM9055 exhibits superior electrochemical performance, delivering an excellent rate capacity (152.4 mA h g−1 at 10 C) and robust cycling stability under high-rate conditions (83.0% capacity retention after 500 cycles at 5C). These findings clarify the mechanism of Nb modulation and demonstrate a robust |
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(2025-6-4)