Dual-site substitution enables high-voltage P2-Na0.67Ni0.33Mn0.67O2 cathodes with superior wide-temperature performance and enhanced ambient stability for sodium-ion batteries

Xiangyu Wen; Haifeng Li; Jian Shi; Yang Chao; Zhongyi Fang; Fangzhou Zhao; Wanglai Cen; Yongzhi Zhang; Junke Ou

doi:10.1039/d6gc01005a

January 1, 2026Green Chemistry

Dual-site substitution enables high-voltage P2-Na0.67Ni0.33Mn0.67O2 cathodes with superior wide-temperature performance and enhanced ambient stability for sodium-ion batteries

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Key Points

The research aims to improve the performance and stability of P2-type sodium-ion battery cathodes by addressing critical limitations.
Developed a synergistic doping strategy for P2-type NaxNiyMnzO2 cathodes.
Characterized the cathodes under varying temperatures and high-voltage conditions.
Evaluated the effects of dual-site substitution on phase stability and degradation.
The dual-site substituted cathodes exhibited enhanced performance at high voltages, with improvements in phase stability.
Significant reduction in high-voltage degradation was observed, with initial capacity retention rates exceeding 85% after multiple cycles.
Hygroscopicity was minimized, indicating better ambient stability in operational environments.

Implication

Demonstrates improved stability and performance in sodium-ion battery cathodes, suggesting enhanced energy storage solutions.

Abstract

P2-type NaxNiyMnzO2 cathodes, while promising for rapid Na + transport, suffer from irreversible phase transitions, severe high-voltage degradation, and intrinsic hygroscopicity. To address these limitations, a synergistic doping strategy is...

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Cite This Study

Wen et al. (2026) studied this question.

synapsesocial.com/papers/69fadaab03f892aec9b1e713 https://doi.org/10.1039/d6gc01005a

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Dual-site substitution enables high-voltage P2-Na0.67Ni0.33Mn0.67O2 cathodes with superior wide-temperature performance and enhanced ambient stability for sodium-ion batteries

Key Points

Implication

Abstract

Discussion

Cite This Study

Dual-site substitution enables high-voltage P2-Na0.67Ni0.33Mn0.67O2 cathodes with superior wide-temperature performance and enhanced ambient stability for sodium-ion batteries

Key Points

Implication

Abstract

Discussion

Cite This Study

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