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首页> 外文期刊>Corrosion science >Acid-corrosion-formed amorphous phosphate surfaces improve electrochemical stability of LiNi_(0.80)Co_(0.15)Al_(0.05)O_2 cathodes
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Acid-corrosion-formed amorphous phosphate surfaces improve electrochemical stability of LiNi_(0.80)Co_(0.15)Al_(0.05)O_2 cathodes

机译：酸性腐蚀形成的无定形磷酸盐表面改善了LINI_（0.80）CO_（0.15）AL_（0.05）O_2阴极的电化学稳定性

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摘要

We report a surface modification of LiNi0.8Co0.15Al0.05O2 (NCA) materials with a phosphate layer via a room-temperature corrosion approach from H3PO4-ethanol solution. The phosphate layer is of amorphous nature with a thickness of 2 similar to 3 nm, and consequently, NCA maintains its bulk structure during cycling and possesses significantly enhanced rate property of 153.7 mA h g(-1) at 5C. Simultaneously, such a modified system demonstrates an excellent cycling stability (107.5 mA h g(-1)) and coulombic efficiency ( 90 %) after 300 cycles at 5C. The findings highlight that the acid corrosion treatment represents a facile and efficient way in developing advanced NCA cathodes.
机译：通过H3PO4-乙醇溶液通过室温腐蚀方法报告用磷酸盐层的LINI0.8CO0.15A10.05O2（NCA）材料的表面改性。磷酸盐层是厚度为2的无定形性，因此NCA在循环期间保持其堆积结构，并且在5℃下具有显着提高的153.7mA H（-1）的率特性。同时，这种改进的系统在5℃下循环后显示出优异的循环稳定性（107.5 mA H（-1））和库仑效率（> 90％）。该研究结果强调酸性腐蚀处理代表开发先进的NCA阴极方面有效，有效的方法。

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  • 来源
    《Corrosion science》 |2020年第5期|108553.1-108553.10|共10页
  • 作者

    Zhao Shuangshuang; Shao Li; Li Xiang; Yang Lishan; Wei Bin; Yang Yahui; Zhao Haihong; Yin Dulin; Ma Wenqing; Wang Zhongchang;

  • 作者单位

    Hunan Normal Univ Key Lab Assembly & Applicat Organ Funct Mol Hunan Natl & Local Joint Engn Lab New Petrochem Mat & F Minist Educ China Key Lab Chem Biol & Tradit Chin Changsha 410081 Hunan Peoples R China;

    Hunan Normal Univ Key Lab Assembly & Applicat Organ Funct Mol Hunan Natl & Local Joint Engn Lab New Petrochem Mat & F Minist Educ China Key Lab Chem Biol & Tradit Chin Changsha 410081 Hunan Peoples R China;

    Gen Res Inst Nonferrous Met Beijing 100088 Peoples R China;

    Hunan Normal Univ Key Lab Assembly & Applicat Organ Funct Mol Hunan Natl & Local Joint Engn Lab New Petrochem Mat & F Minist Educ China Key Lab Chem Biol & Tradit Chin Changsha 410081 Hunan Peoples R China|Int Iberian Nanotechnol Lab Dept Quantum & Energy Mat Ave Mestre Jose Veiga S-N P-4715330 Braga Portugal;

    Int Iberian Nanotechnol Lab Dept Quantum & Energy Mat Ave Mestre Jose Veiga S-N P-4715330 Braga Portugal;

    Hunan Normal Univ Key Lab Assembly & Applicat Organ Funct Mol Hunan Natl & Local Joint Engn Lab New Petrochem Mat & F Minist Educ China Key Lab Chem Biol & Tradit Chin Changsha 410081 Hunan Peoples R China;

    Hunan Normal Univ Key Lab Assembly & Applicat Organ Funct Mol Hunan Natl & Local Joint Engn Lab New Petrochem Mat & F Minist Educ China Key Lab Chem Biol & Tradit Chin Changsha 410081 Hunan Peoples R China;

    Hunan Normal Univ Key Lab Assembly & Applicat Organ Funct Mol Hunan Natl & Local Joint Engn Lab New Petrochem Mat & F Minist Educ China Key Lab Chem Biol & Tradit Chin Changsha 410081 Hunan Peoples R China;

    Qilu Univ Technol Shandong Acad Sci Sch Mat Sci & Engn Jinan 250353 Peoples R China;

    Int Iberian Nanotechnol Lab Dept Quantum & Energy Mat Ave Mestre Jose Veiga S-N P-4715330 Braga Portugal;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    LiNi0.8Co0.15Al0.05O2; Acid corrosion; Amorphous phosphate; Surface degradation; Lithium-ion battery;

    机译：LINI0.8CO0.15AL0.05O2;酸腐蚀;无定形磷酸盐;表面降解;锂离子电池;

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