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Highly conductive CrNb11O29 nanorods for use in high-energy, safe, fast-charging and stable lithium-ion batteries.

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Title: Highly conductive CrNb11O29 nanorods for use in high-energy, safe, fast-charging and stable lithium-ion batteries.
Authors: Fu, Qingfeng1,2,3, Liu, Xin1,2,3, Hou, Jingrong1,2,3, Pu, Yiran1,2,3, Lin, Chunfu1,2,3 linchunfu@hainu.edu.cn, Yang, Liang3, Zhu, Xiangzhen1,2,3, Hu, Lei1,2,3, Lin, Shiwei2,3, Luo, Lijie2,3, Chen, Yongjun2,3
Source: Journal of Power Sources. Sep2018, Vol. 397, p231-239. 9p.
Subjects: Negative electrode, Electric conductivity, Intercalation reactions, Electrons, X-ray diffraction
Abstract: Ti 2 Nb 2 x O 4+5 x compounds are very popular negative-electrode materials for lithium-ion batteries due to their high specific capacities, safe operating potentials and high cycling stability. Nevertheless, their poor electronic conductivities and insufficient Li + diffusion coefficients limit the rate capabilities. Herein, we explore highly conductive CrNb 11 O 29 with a high theoretical capacity (401 mAh g −1 ) and an open Wadsley–Roth shear structure as a new intercalating negative-electrode material having the same advantages of Ti 2 Nb 2 x O 4+5 x but a high rate capability. CrNb 11 O 29 nanorods (CrNb 11 O 29 -R) with lengths of 500–1000 nm and very small diameters of 30–50 nm are prepared based on a novel hydrothermal method. Due to the free electrons in Cr-3d orbitals and the large ionic radius of Cr 3+ , CrNb 11 O 29 exhibits a high electronic conductivity and large Li + diffusion coefficients, respectively. In-situ X-ray diffraction analyses confirm its high structural stability. These conductivity, structural and architectural advantages in CrNb 11 O 29 -R lead to its significant pseudocapacitive contribution (82.0% at 1.1 mV s −1 ), prominent rate capability (high reversible capacities of 343 mAh g −1 at 0.1C and 228 mAh g −1 at 10C), and outstanding cycling stability (only 8.9% capacity loss at 10C over 400 cycles). [ABSTRACT FROM AUTHOR]
Copyright of Journal of Power Sources is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 130857993
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Highly conductive CrNb11O29 nanorods for use in high-energy, safe, fast-charging and stable lithium-ion batteries.
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  Data: <searchLink fieldCode="AR" term="%22Fu%2C+Qingfeng%22">Fu, Qingfeng</searchLink><relatesTo>1,2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Liu%2C+Xin%22">Liu, Xin</searchLink><relatesTo>1,2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Hou%2C+Jingrong%22">Hou, Jingrong</searchLink><relatesTo>1,2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Pu%2C+Yiran%22">Pu, Yiran</searchLink><relatesTo>1,2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Lin%2C+Chunfu%22">Lin, Chunfu</searchLink><relatesTo>1,2,3</relatesTo><i> linchunfu@hainu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Yang%2C+Liang%22">Yang, Liang</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhu%2C+Xiangzhen%22">Zhu, Xiangzhen</searchLink><relatesTo>1,2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Hu%2C+Lei%22">Hu, Lei</searchLink><relatesTo>1,2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Lin%2C+Shiwei%22">Lin, Shiwei</searchLink><relatesTo>2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Luo%2C+Lijie%22">Luo, Lijie</searchLink><relatesTo>2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Chen%2C+Yongjun%22">Chen, Yongjun</searchLink><relatesTo>2,3</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Power+Sources%22">Journal of Power Sources</searchLink>. Sep2018, Vol. 397, p231-239. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Negative+electrode%22">Negative electrode</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+conductivity%22">Electric conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Intercalation+reactions%22">Intercalation reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Electrons%22">Electrons</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+diffraction%22">X-ray diffraction</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Ti 2 Nb 2 x O 4+5 x compounds are very popular negative-electrode materials for lithium-ion batteries due to their high specific capacities, safe operating potentials and high cycling stability. Nevertheless, their poor electronic conductivities and insufficient Li + diffusion coefficients limit the rate capabilities. Herein, we explore highly conductive CrNb 11 O 29 with a high theoretical capacity (401 mAh g −1 ) and an open Wadsley–Roth shear structure as a new intercalating negative-electrode material having the same advantages of Ti 2 Nb 2 x O 4+5 x but a high rate capability. CrNb 11 O 29 nanorods (CrNb 11 O 29 -R) with lengths of 500–1000 nm and very small diameters of 30–50 nm are prepared based on a novel hydrothermal method. Due to the free electrons in Cr-3d orbitals and the large ionic radius of Cr 3+ , CrNb 11 O 29 exhibits a high electronic conductivity and large Li + diffusion coefficients, respectively. In-situ X-ray diffraction analyses confirm its high structural stability. These conductivity, structural and architectural advantages in CrNb 11 O 29 -R lead to its significant pseudocapacitive contribution (82.0% at 1.1 mV s −1 ), prominent rate capability (high reversible capacities of 343 mAh g −1 at 0.1C and 228 mAh g −1 at 10C), and outstanding cycling stability (only 8.9% capacity loss at 10C over 400 cycles). [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Power Sources is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.jpowsour.2018.07.020
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 9
        StartPage: 231
    Subjects:
      – SubjectFull: Negative electrode
        Type: general
      – SubjectFull: Electric conductivity
        Type: general
      – SubjectFull: Intercalation reactions
        Type: general
      – SubjectFull: Electrons
        Type: general
      – SubjectFull: X-ray diffraction
        Type: general
    Titles:
      – TitleFull: Highly conductive CrNb11O29 nanorods for use in high-energy, safe, fast-charging and stable lithium-ion batteries.
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            NameFull: Fu, Qingfeng
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            NameFull: Liu, Xin
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          Dates:
            – D: 01
              M: 09
              Text: Sep2018
              Type: published
              Y: 2018
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              Value: 397
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            – TitleFull: Journal of Power Sources
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