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Article Abstract
The O3-type NaNiFeMnO material is modified by introducing Sr into the Na sites and Al into the transition metal (TM) sites. The inactive Sr and Al serve as structural pillars within the NaO and TMO slabs, respectively, expanding the interlayer spacing and boosting the stability of the structure. The optimized cathode demonstrates a good rate performance of 117.8 mAh g at 5C and exhibits outstanding cycling stability of 88% after 200 cycles, significantly surpassing the pristine material (68%).
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