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首页> 外文期刊>Advanced energy materials >Open-Structured V2O5 center dot nH(2)O Nanoflakes as Highly Reversible Cathode Material for Monovalent and Multivalent Intercalation Batteries
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Open-Structured V2O5 center dot nH(2)O Nanoflakes as Highly Reversible Cathode Material for Monovalent and Multivalent Intercalation Batteries

机译：开放结构的V2O5中心点nH（2）O纳米薄片作为用于单价和多价嵌入电池的高度可逆阴极材料

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摘要

The high-capacity cathode material V2O5 center dot nH(2)O has attracted considerable attention for metal ion batteries due to the multielectron redox reaction during electrochemical processes. It has an expanded layer structure, which can host large ions or multivalent ions. However, structural instability and poor electronic and ionic conductivities greatly handicap its application. Here, in cell tests, self-assembly V2O5 center dot nH(2)O nanoflakes shows excellent electrochemical performance with either monovalent or multivalent cation intercalation. They are directly grown on a 3D conductive stainless steel mesh substrate via a simple and green hydrothermal method. Well-layered nanoflakes are obtained after heat treatment at 300 degrees C (V2O5 center dot 0.3H(2)O). Nanoflakes with ultrathin flower petals deliver a stable capacity of 250 mA h g(-1) in a Li-ion cell, 110 mA h g(-1) in a Na-ion cell, and 80 mA h g(-1) in an Al-ion cell in their respective potential ranges (2.0-4.0 V for Li and Na-ion batteries and 0.1-2.5 V for Al-ion battery) after 100 cycles.
机译：由于电化学过程中的多电子氧化还原反应，高容量阴极材料V2O5中心点nH（2）O已引起金属离子电池的极大关注。它具有扩展层结构，可以容纳大离子或多价离子。然而，结构的不稳定性以及不良的电子和离子电导率极大地阻碍了其应用。在这里，在电池测试中，自组装V2O5中心点nH（2）O纳米片显示出优异的电化学性能，带有单价或多价阳离子嵌入。通过简单且绿色的水热法将它们直接生长在3D导电不锈钢网状基材上。在300摄氏度（V2O5中心点0.3H（2）O）进行热处理后，可获得层状纳米薄片。具有超薄花瓣的纳米薄片在锂离子电池中提供250 mA hg（-1）的稳定容量，在钠离子电池中提供110 mA hg（-1）的稳定容量，在Al-离子电池中提供80 mA hg（-1）的稳定容量。 100次循环后，其各自的电势范围（锂和钠离子电池为2.0-4.0 V，铝离子电池为0.1-2.5 V）处于各自的电位范围。

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  • 来源
    《Advanced energy materials》 |2017年第14期|1602720.1-1602720.8|共8页
  • 作者

    Wang Huali; Bi Xuanxuan; Bai Ying; Wu Chuan; Gu Sichen; Chen Shi; Wu Feng; Amine Khalil; Lu Jun;

  • 作者单位

    Beijing Inst Technol, Sch Mat Sci & Engn, Beijing Key Lab Environm Sci & Engn, Beijing 100081, Peoples R China;

    Argonne Natl Lab, Chem Sci & Engn Div, 9700 South Cass Ave, Lemont, IL 60439 USA|Ohio State Univ, Dept Chem & Biochem, 100 West 18th Ave, Columbus, OH 43210 USA;

    Beijing Inst Technol, Sch Mat Sci & Engn, Beijing Key Lab Environm Sci & Engn, Beijing 100081, Peoples R China;

    Beijing Inst Technol, Sch Mat Sci & Engn, Beijing Key Lab Environm Sci & Engn, Beijing 100081, Peoples R China|Collaborat Innovat Ctr Elect Vehicles Beijing, Beijing 100081, Peoples R China;

    Beijing Inst Technol, Sch Mat Sci & Engn, Beijing Key Lab Environm Sci & Engn, Beijing 100081, Peoples R China;

    Beijing Inst Technol, Sch Mat Sci & Engn, Beijing Key Lab Environm Sci & Engn, Beijing 100081, Peoples R China|Collaborat Innovat Ctr Elect Vehicles Beijing, Beijing 100081, Peoples R China;

    Beijing Inst Technol, Sch Mat Sci & Engn, Beijing Key Lab Environm Sci & Engn, Beijing 100081, Peoples R China|Collaborat Innovat Ctr Elect Vehicles Beijing, Beijing 100081, Peoples R China;

    Argonne Natl Lab, Chem Sci & Engn Div, 9700 South Cass Ave, Lemont, IL 60439 USA;

    Argonne Natl Lab, Chem Sci & Engn Div, 9700 South Cass Ave, Lemont, IL 60439 USA;

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  • 正文语种 eng
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  • 关键词

    Al-ion batteries; Li-ion batteries; Na-ion batteries; V2O5 center dot nH(2)O nanoflakes;

    机译：铝离子电池;锂离子电池;钠离子电池;V2O5中心点nH（2）O纳米薄片;

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