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Structure, Electrochemistry, and Phase Evolution of Al-Substituted Na2/3[Ni1/3‑yMn2/3‑zAl y+ z ]O2 as a Sodium-Ion Battery Cathode Material

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Sodium layered transition metal oxide is a promising cathode material for Na-ion batteries. The P2-type structure and especially the Na2/3[Ni1/3Mn2/3]-O2 (NaNM) composition are desirable for their rate capability and energy density. Unfortunately, these materi... ...