P2-Na0.61Ca0.03[Mg2/9Cu1/9Mn2/3]O2 as a High-Energy Oxygen Redox Cathode for Na-Ion Batteries: Investigation of Cu Substitution and Ca Doping to Enhance Cycling Stability (Adv. Funct. Mater. 39/2025)

IF 19 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Functional Materials Pub Date : 2025-09-30 DOI:10.1002/adfm.71551

Jin-Wei Kang, Hsu-Chen Cheng, Hsiang-Jung Chen, Shao-Chu Huang, Chih-Heng Lee, Chin-Lung Kuo, Sheng-Yu Yu, Heng-Liang Wu, Chia-Ching Lin, Chun-Han Kuo, Hao-Hsiang Chang, Chih-Wei Hu, Shu-Chih Haw, Hsin-Yi Tiffany Chen, Han-Yi Chen

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Abstract

Na-Ion Batteries

In their Research Article (10.1002/adfm.202504642), Shu-Chih Haw, Hsin-Yi Tiffany Chen, Han-Yi Chen, and co-workers develop a novel P2-Na_0.61Ca_0.03[Mg_2/9Cu_1/9Mn_2/3]O₂ cathode material for Na-ion batteries. Cu substitution in transition-metal layers stabilizes O ions during oxygen redox, while Ca doping in alkaline-metal layers acts as structural “pillars” to suppress phase transformation. Na_0.61Ca_0.03[Mg_2/9Cu_1/9Mn_2/3]O₂ exhibits a high specific capacity (205 mAh g⁻¹ at 0.1 C), good cyclic stability, and impressive rate capability (142 mAh g⁻¹ at 2.5 C), demonstrating its potential for high-energy Na-ion batteries.

Abstract Image

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P2-Na0.61Ca0.03[Mg2/9Cu1/9Mn2/3]O2作为na离子电池的高能氧氧化还原阴极：Cu取代和Ca掺杂提高循环稳定性的研究板牙。39/2025)

钠离子电池研究论文（10.1002/adfm）[202504642]，胡淑志，陈新义，陈汉义，等人研究了一种新型的钠离子电池正极材料P2-Na0.61Ca0.03[mg2 / 9cu1 / 9m2m /3]O2。过渡金属层中的Cu取代在氧氧化还原过程中稳定了O离子，而在碱金属层中掺杂Ca作为结构“支柱”抑制了相变。Na0.61Ca0.03[Mg2/9Cu1/9Mn2/3]O2具有较高的比容量（0.1℃时为205 mAh g−1）、良好的循环稳定性和令人印象深刻的倍率性能（2.5℃时为142 mAh g−1），显示了其作为高能钠离子电池的潜力。

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来源期刊

Advanced Functional Materials 工程技术-材料科学：综合

CiteScore

29.50

自引率

4.20%

发文量

2086

审稿时长

2.1 months

期刊介绍： Firmly established as a top-tier materials science journal, Advanced Functional Materials reports breakthrough research in all aspects of materials science, including nanotechnology, chemistry, physics, and biology every week. Advanced Functional Materials is known for its rapid and fair peer review, quality content, and high impact, making it the first choice of the international materials science community.