Multi-Core-shell structured LiFePO4@Na3V2(PO4)3@C composite for enhanced low-temperature performance of lithium ion batteries

Xingxing Gu; Shuang Qiao; Xiaolei Ren; Xingyan Liu; Youzhou He; Terence Liu; Tiefeng Liu

doi:10.1007/s12598-020-01669-x

Multi-Core-shell structured LiFePO4@Na3V2(PO4)3@C composite for enhanced low-temperature performance of lithium ion batteries

Xingxing Gu^*, Shuang Qiao, Xiaolei Ren, Xingyan Liu, Youzhou He, Terence Liu, Tiefeng Liu^*

^*Corresponding author for this work

Mechanical and Construction Engineering

Research output: Contribution to journal › Article › peer-review

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Abstract

In this work, a multi-core-shell structured LiFePO4@Na3V2(PO4)3@C (LFP@NVP@C) composite is successfully designed and prepared to address inferior low-temperature performance of LiFePO4 cathode for lithium ion batteries. TEM confirms the inner NVP and outer carbon layers co-existed on the surface of LFP particle. When evaluated at low-temperature operation, LFP@NVP@C composite exhibits an evidently enhanced electrochemical performance in term of higher capacity and lower polarization, compared with LFP@C. Even at -10 oC with 0.5 C, LFP@NVP@C delivers a discharge capacity of ca. 96.9 mAh·g-1 and discharge voltage of ca. 3.3 V, which is attributed to the beneficial contribution of NVP coating. NASICON-structured NVP with an open framework for readily insertion/desertion of Li+ will effectively reduce the polarization for the electrochemical reactions of the designed LFP@NVP@C composite.

Original language	English
Pages (from-to)	828–836
Number of pages	9
Journal	Rare Metals
Volume	40
Issue number	4
Early online date	12 Jan 2021
DOIs	https://doi.org/10.1007/s12598-020-01669-x
Publication status	Published - 1 Apr 2021

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title = "Multi-Core-shell structured LiFePO4@Na3V2(PO4)3@C composite for enhanced low-temperature performance of lithium ion batteries",

abstract = "In this work, a multi-core-shell structured LiFePO4@Na3V2(PO4)3@C (LFP@NVP@C) composite is successfully designed and prepared to address inferior low-temperature performance of LiFePO4 cathode for lithium ion batteries. TEM confirms the inner NVP and outer carbon layers co-existed on the surface of LFP particle. When evaluated at low-temperature operation, LFP@NVP@C composite exhibits an evidently enhanced electrochemical performance in term of higher capacity and lower polarization, compared with LFP@C. Even at -10 oC with 0.5 C, LFP@NVP@C delivers a discharge capacity of ca. 96.9 mAh·g-1 and discharge voltage of ca. 3.3 V, which is attributed to the beneficial contribution of NVP coating. NASICON-structured NVP with an open framework for readily insertion/desertion of Li+ will effectively reduce the polarization for the electrochemical reactions of the designed LFP@NVP@C composite.",

keywords = "LiFePO4@Na3V2(PO4)3@C omposite, Multi-Core-shell, ow-temperature, lithium ion batteries",

author = "Xingxing Gu and Shuang Qiao and Xiaolei Ren and Xingyan Liu and Youzhou He and Terence Liu and Tiefeng Liu",

note = "This work was financially supported by the National Natural Science Foundation of China (No. 51902036), the Natural Science Foundation of Chongqing Science & Technology Commission (No. cstc2019jcyj-msxm1407), the Natural Science Foundation of Chongqing Technology and Business University (No. 1952009), the Science and Technology Research Program of Chongqing Municipal Education Commission (Nos. KJQN201900826 and KJQN201800808), the Venture & Innovation Support Program for Chongqing Overseas Returnees (No. CX2018129), the Innovation Group of New Technologies for Industrial Pollution Control of Chongqing Education Commission (No. CXQT19023), the Engineering and Physical Sciences Research Council (EPSRC) (No. EP/S032886/1) and the Key Disciplines of Chemical Engineering and Technology in Chongqing Colleges and Universities during the 13th Five Year Plan.",

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doi = "10.1007/s12598-020-01669-x",

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T1 - Multi-Core-shell structured LiFePO4@Na3V2(PO4)3@C composite for enhanced low-temperature performance of lithium ion batteries

AU - Gu, Xingxing

AU - Qiao, Shuang

AU - Ren, Xiaolei

AU - Liu, Xingyan

AU - He, Youzhou

AU - Liu, Terence

AU - Liu, Tiefeng

N1 - This work was financially supported by the National Natural Science Foundation of China (No. 51902036), the Natural Science Foundation of Chongqing Science & Technology Commission (No. cstc2019jcyj-msxm1407), the Natural Science Foundation of Chongqing Technology and Business University (No. 1952009), the Science and Technology Research Program of Chongqing Municipal Education Commission (Nos. KJQN201900826 and KJQN201800808), the Venture & Innovation Support Program for Chongqing Overseas Returnees (No. CX2018129), the Innovation Group of New Technologies for Industrial Pollution Control of Chongqing Education Commission (No. CXQT19023), the Engineering and Physical Sciences Research Council (EPSRC) (No. EP/S032886/1) and the Key Disciplines of Chemical Engineering and Technology in Chongqing Colleges and Universities during the 13th Five Year Plan.

PY - 2021/4/1

Y1 - 2021/4/1

N2 - In this work, a multi-core-shell structured LiFePO4@Na3V2(PO4)3@C (LFP@NVP@C) composite is successfully designed and prepared to address inferior low-temperature performance of LiFePO4 cathode for lithium ion batteries. TEM confirms the inner NVP and outer carbon layers co-existed on the surface of LFP particle. When evaluated at low-temperature operation, LFP@NVP@C composite exhibits an evidently enhanced electrochemical performance in term of higher capacity and lower polarization, compared with LFP@C. Even at -10 oC with 0.5 C, LFP@NVP@C delivers a discharge capacity of ca. 96.9 mAh·g-1 and discharge voltage of ca. 3.3 V, which is attributed to the beneficial contribution of NVP coating. NASICON-structured NVP with an open framework for readily insertion/desertion of Li+ will effectively reduce the polarization for the electrochemical reactions of the designed LFP@NVP@C composite.

AB - In this work, a multi-core-shell structured LiFePO4@Na3V2(PO4)3@C (LFP@NVP@C) composite is successfully designed and prepared to address inferior low-temperature performance of LiFePO4 cathode for lithium ion batteries. TEM confirms the inner NVP and outer carbon layers co-existed on the surface of LFP particle. When evaluated at low-temperature operation, LFP@NVP@C composite exhibits an evidently enhanced electrochemical performance in term of higher capacity and lower polarization, compared with LFP@C. Even at -10 oC with 0.5 C, LFP@NVP@C delivers a discharge capacity of ca. 96.9 mAh·g-1 and discharge voltage of ca. 3.3 V, which is attributed to the beneficial contribution of NVP coating. NASICON-structured NVP with an open framework for readily insertion/desertion of Li+ will effectively reduce the polarization for the electrochemical reactions of the designed LFP@NVP@C composite.

KW - LiFePO4@Na3V2(PO4)3@C omposite

KW - Multi-Core-shell

KW - ow-temperature

KW - lithium ion batteries

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U2 - 10.1007/s12598-020-01669-x

DO - 10.1007/s12598-020-01669-x

M3 - Article

AN - SCOPUS:85099252860

VL - 40

SP - 828

EP - 836

JO - Rare Metals

JF - Rare Metals

SN - 1001-0521

IS - 4

ER -

Multi-Core-shell structured LiFePO4@Na3V2(PO4)3@C composite for enhanced low-temperature performance of lithium ion batteries

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