TY - JOUR
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
UR - http://www.scopus.com/inward/record.url?scp=85099252860&partnerID=8YFLogxK
U2 - 10.1007/s12598-020-01669-x
DO - 10.1007/s12598-020-01669-x
M3 - Article
AN - SCOPUS:85099252860
SN - 1001-0521
VL - 40
SP - 828
EP - 836
JO - Rare Metals
JF - Rare Metals
IS - 4
ER -
