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LiFePO4-Coated Li1.2Mn0.54Ni0.13CO0.13O2 as Cathode Materials with High Coulombic Efficiency and Improved Cyclability for Li-Ion Batteries
He Lei1; Xu Jun-Min1,2; Wang Yong-Jian1; Zhang Chang-Jin1,3
2017-06-14
发表期刊ACTA PHYSICO-CHIMICA SINICA
卷号33期号:8页码:1605-1613
摘要In this work, we present a new design for a surface protective layer formed by a facile aqueous solution process in which a nano-architectured layer of LiFePO4 is grown on a Li-rich cathode material, Li1.2Mn0.54Ni0.13Co0.13O2. The coated samples are then calcined at 400 or 500 degrees C for 5 h. The sample after calcination at 400 degrees C demonstrates a high initial columbic efficiency of 91.9%, a large reversible capacity of 295.0 mAh center dot g-1 at 0.1C (1C = 300 mA center dot g(-1)), and excellent cyclability with a capacity of 206.7 mAh center dot g(-1) after 100 cycles at 1C. Meanwhile, voltage fading of the coated sample is effectively suppressed by protection offered by a LiFePO4 coating layer. These superior electrochemical performances are attributed to the coating layer, which not only protects the Li-rich cathode material from side reaction with the electrolyte and maintains the stability of the interface structure, but also provides d excess reversible capacity.
文章类型Article
关键词Lithium-ion Battery Lithium-rich Cathode Materials Lifepo4 Coating High Columbic Efficiency Cyclability
WOS标题词Science & Technology ; Physical Sciences
资助者Scientific Research Grant of Hefei Science Center of Chinese Academy of Sciences(2015SRG-HSCO25) ; Scientific Research Grant of Hefei Science Center of Chinese Academy of Sciences(2015SRG-HSCO25) ; National Natural Science Foundation of China(U1532267 ; National Natural Science Foundation of China(U1532267 ; 11504379) ; 11504379) ; Scientific Research Grant of Hefei Science Center of Chinese Academy of Sciences(2015SRG-HSCO25) ; Scientific Research Grant of Hefei Science Center of Chinese Academy of Sciences(2015SRG-HSCO25) ; National Natural Science Foundation of China(U1532267 ; National Natural Science Foundation of China(U1532267 ; 11504379) ; 11504379)
DOI10.3866/PKU.WHXB201704145
关键词[WOS]SITU X-RAY ; ELECTROCHEMICAL PERFORMANCE ; SURFACE MODIFICATION ; SECONDARY BATTERIES ; CYCLING STABILITY ; RATE CAPABILITY ; RICH CATHODE ; CAPACITY ; LAYER ; ELECTRODES
收录类别SCI
语种英语
资助者Scientific Research Grant of Hefei Science Center of Chinese Academy of Sciences(2015SRG-HSCO25) ; Scientific Research Grant of Hefei Science Center of Chinese Academy of Sciences(2015SRG-HSCO25) ; National Natural Science Foundation of China(U1532267 ; National Natural Science Foundation of China(U1532267 ; 11504379) ; 11504379) ; Scientific Research Grant of Hefei Science Center of Chinese Academy of Sciences(2015SRG-HSCO25) ; Scientific Research Grant of Hefei Science Center of Chinese Academy of Sciences(2015SRG-HSCO25) ; National Natural Science Foundation of China(U1532267 ; National Natural Science Foundation of China(U1532267 ; 11504379) ; 11504379)
WOS研究方向Chemistry
WOS类目Chemistry, Physical
WOS记录号WOS:000405216100015
引用统计
文献类型期刊论文
条目标识符http://ir.hfcas.ac.cn:8080/handle/334002/33543
专题中科院强磁场科学中心
作者单位1.Chinese Acad Sci, High Field Magnet Lab, Hefei 230031, Peoples R China
2.Zhengzhou Univ, Sch Phys Engn, Key Lab Mat Phys, Minist Educ China, Zhengzhou 450052, Peoples R China
3.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China
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He Lei,Xu Jun-Min,Wang Yong-Jian,et al. LiFePO4-Coated Li1.2Mn0.54Ni0.13CO0.13O2 as Cathode Materials with High Coulombic Efficiency and Improved Cyclability for Li-Ion Batteries[J]. ACTA PHYSICO-CHIMICA SINICA,2017,33(8):1605-1613.
APA He Lei,Xu Jun-Min,Wang Yong-Jian,&Zhang Chang-Jin.(2017).LiFePO4-Coated Li1.2Mn0.54Ni0.13CO0.13O2 as Cathode Materials with High Coulombic Efficiency and Improved Cyclability for Li-Ion Batteries.ACTA PHYSICO-CHIMICA SINICA,33(8),1605-1613.
MLA He Lei,et al."LiFePO4-Coated Li1.2Mn0.54Ni0.13CO0.13O2 as Cathode Materials with High Coulombic Efficiency and Improved Cyclability for Li-Ion Batteries".ACTA PHYSICO-CHIMICA SINICA 33.8(2017):1605-1613.
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