Na3.5(MnVFeTi)0.5(PO4)3: A Multi-Transition-Metal-Ion-Engineered NASICON-Type Cathodes for Sodium Ion Batteries

IF 5.1 4区材料科学 Q2 ELECTROCHEMISTRY

Batteries & Supercaps Pub Date : 2024-09-22 DOI:10.1002/batt.202400526

Vaiyapuri Soundharrajan, Ghalib Alfaza, Anindityo Arifiadi, Demelash Feleke, Subramanian Nithiananth, JunJi Piao, Zhiyuan Zeng, Duong Tung Pham, Chunjoong Kim, Jaekook Kim

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Abstract

Electrochemically active Na-superionic conductor (NASICON)-type cathodes have the structural flexibility to include various transition elements, thus enabling high power outputs benefited by multi-electron redox reactions. This study amalgamated multiple transition metal ions to construct a new NASICON-type cathode i. e., carbon coated Na_3.5(MnVFeTi)_0.5(PO₄)₃ (NMVFTP/C) for Na-ion batteries (NIBs). The NMVFTP/C cathode engineered in this study demonstrated stable Na⁺-storage capacity, including long-term cycling stability up to 4000 cycles at 3000 mA g⁻¹ with 96 % capacity retention and a high-rate output capacity of 85.16 mAh g⁻¹ at 2500 mA g⁻¹. To elucidate the ion transport process within the cathode, density functional theory modeling was employed. The low energy barrier for the diffusion of Na⁺ in the NMVFTP/C materials was proved to be a key factor supporting our material's superior electrochemical performances.

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Na3.5(MnVFeTi)0.5(PO4)3：用于钠离子电池的多过渡金属离子工程 NASICON 型阴极

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来源期刊

Batteries & Supercaps Multiple-

CiteScore

8.60

自引率

5.30%

发文量

223

期刊介绍： Electrochemical energy storage devices play a transformative role in our societies. They have allowed the emergence of portable electronics devices, have triggered the resurgence of electric transportation and constitute key components in smart power grids. Batteries & Supercaps publishes international high-impact experimental and theoretical research on the fundamentals and applications of electrochemical energy storage. We support the scientific community to advance energy efficiency and sustainability.