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Constructing Magnetic Ion Accelerator at Na2/3Ni1/3Mn2/3O2 Surface for Sodium Ion Batteries
ACS Energy Letters ( IF 19.3 ) Pub Date : 2023-09-26 , DOI: 10.1021/acsenergylett.3c01689
Shuwei Sun 1 , Xiaoning Li 2 , Liqin Yan 3 , Weixin Chen 4 , Xia Lu 4 , Ying Bai 1
ACS Energy Letters ( IF 19.3 ) Pub Date : 2023-09-26 , DOI: 10.1021/acsenergylett.3c01689
Shuwei Sun 1 , Xiaoning Li 2 , Liqin Yan 3 , Weixin Chen 4 , Xia Lu 4 , Ying Bai 1
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Surface ion transportation and structural stability are generally the key factors determining the electrochemical performance of a specific electrode for secondary batteries. Therefore, building an effective and stable interface layer becomes the bottleneck for long-life and high-performance batteries. This study is the first to design and construct a magnetic Fe3O4 interfacial layer on the Na2/3Ni1/3Mn2/3O2 surface. Preliminary analysis and calculations indicated that the the Fe3O4 magnetic layer played a role as a surface ion accelerator, which effectively ameliorated the interfacial kinetic behavior through dispersing the aggregated ions at a tangential orientation under the Lorentz force. Electrochemical tests substantiated that the decorated cathode delivered a high capacity of 87 mA h g–1 and a capacity retention of 76% after 500 cycles under a rate of 5 C. This finding in the surface magnetic ion accelerator provides insight into efficient electrode design and applications of surface physical fields to enhance ion transportation and structural stability for advanced secondary batteries.
中文翻译：
钠离子电池Na2/3Ni1/3Mn2/3O2表面构建磁离子加速器
表面离子传输和结构稳定性通常是决定二次电池特定电极电化学性能的关键因素。因此，构建有效稳定的界面层成为长寿命高性能电池的瓶颈。本研究首次在Na 2/3 Ni 1/3 Mn 2/3 O 2表面设计并构建了磁性Fe 3 O 4界面层。初步分析和计算表明，Fe 3 O 4磁性层起到了表面离子加速器的作用，在洛伦兹力作用下将聚集的离子沿切向方向分散，有效改善了界面动力学行为。电化学测试证实，装饰阴极可提供 87 mA hg –1的高容量，在 5 C 倍率下循环 500 次后容量保持率为 76%。表面磁离子加速器中的这一发现为高效电极设计和应用提供了深入的见解。表面物理场以增强先进二次电池的离子传输和结构稳定性。
更新日期：2023-09-26
中文翻译：
钠离子电池Na2/3Ni1/3Mn2/3O2表面构建磁离子加速器
表面离子传输和结构稳定性通常是决定二次电池特定电极电化学性能的关键因素。因此，构建有效稳定的界面层成为长寿命高性能电池的瓶颈。本研究首次在Na 2/3 Ni 1/3 Mn 2/3 O 2表面设计并构建了磁性Fe 3 O 4界面层。初步分析和计算表明，Fe 3 O 4磁性层起到了表面离子加速器的作用，在洛伦兹力作用下将聚集的离子沿切向方向分散，有效改善了界面动力学行为。电化学测试证实，装饰阴极可提供 87 mA hg –1的高容量，在 5 C 倍率下循环 500 次后容量保持率为 76%。表面磁离子加速器中的这一发现为高效电极设计和应用提供了深入的见解。表面物理场以增强先进二次电池的离子传输和结构稳定性。
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