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首页> 外文期刊>Energy & environmental science >High-performance symmetric sodium-ion batteries using a new, bipolar O3-type material, Na0.8Ni0.4Ti0.6O2
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High-performance symmetric sodium-ion batteries using a new, bipolar O3-type material, Na0.8Ni0.4Ti0.6O2

机译:使用新型双极O3型材料Na0.8Ni0.4Ti0.6O2的高性能对称钠离子电池

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摘要

Based on low-cost and rich resources, sodium-ion batteries have been regarded as a promising candidate for next-generation energy storage batteries in the large-scale energy applications of renewable energy and smart grids. However, there are some critical drawbacks limiting its application, such as safety and stability problems. In this work, a stable symmetric sodium-ion battery based on the bipolar, active O3-type material, Na0.8Ni0.4Ti0.6O2, is developed. This bipolar material shows a typical O3-type layered structure, containing two electrochemically active transition metals with redox couples of Ni4+/Ni2+ and Ti4+/Ti3+, respectively. This Na0.8Ni0.4Ti0.6O2-based symmetric cell exhibits a high average voltage of 2.8 V, a reversible discharge capacity of 85 mA h g(-1), 75% capacity retention after 150 cycles and good rate capability. This full symmetric cell will greatly contribute to the development of room-temperature sodium-ion batteries with a view towards safety, low cost and long life, and it will stimulate further research on symmetric cells using the same active materials as both cathode and anode.
机译:基于低成本和丰富的资源,在可再生能源和智能电网的大规模能源应用中,钠离子电池已被视为下一代储能电池的有希望的候选者。但是,存在一些限制其应用的关键缺陷,例如安全性和稳定性问题。在这项工作中,开发了基于双极性活性O3型材料Na0.8Ni0.4Ti0.6O2的稳定对称钠离子电池。这种双极材料显示出典型的O3型层状结构,包含两种电化学活性过渡金属,分别具有Ni4 + / Ni2 +和Ti4 + / Ti3 +的氧化还原对。这种基于Na0.8Ni0.4Ti0.6O2的对称电池具有2.8 V的高平均电压,85 mA h g(-1)的可逆放电容量,150次循环后的75%容量保持率和良好的倍率能力。从安全性,低成本和长寿命的角度来看,这种完全对称的电池将极大地促进室温钠离子电池的开发,并且将激发对使用与正极和负极相同的活性材料的对称电池的进一步研究。

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  • 来源
    《Energy & environmental science》 |2015年第4期|1237-1244|共8页
  • 作者单位

    Natl Inst Adv Ind Sci & Technol, Energy Technol Res Inst, Tsukuba, Ibaraki, Japan|Univ Tsukuba, Grad Sch Syst & Informat Engn, Tsukuba, Ibaraki 3058573, Japan;

    Natl Inst Adv Ind Sci & Technol, Energy Technol Res Inst, Tsukuba, Ibaraki, Japan;

    Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan;

    Argonne Natl Lab, Argonne, IL 60439 USA;

    Natl Inst Adv Ind Sci & Technol, Energy Technol Res Inst, Tsukuba, Ibaraki, Japan;

    Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan;

    Univ Tsukuba, Grad Sch Syst & Informat Engn, Tsukuba, Ibaraki 3058573, Japan;

    Natl Inst Adv Ind Sci & Technol, Energy Technol Res Inst, Tsukuba, Ibaraki, Japan|Univ Tsukuba, Grad Sch Syst & Informat Engn, Tsukuba, Ibaraki 3058573, Japan|Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China|Nanjing Univ, Dept Energy Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China;

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