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Title: The effect of cobalt doping on the morphology and electrochemical performance of high-voltage spinel LiNi0.5Mn1.5O4 cathode material

Abstract

In this paper, to reveal the effects of Co-doping on the electrochemical performance of micro-sized LiNi0.5Mn1.5O4 (LNMO), undoped LNMO and Co-doped LiCo0.1Ni0.45Mn1.45O4 (LCoNMO) are synthesized via a PVP-combustion method and calcined at 1000 °C for 6 h. SEM and XRD analyses suggest that Co-doping decreases the particle size and the LizNi1-zO2 impurity at the calcination temperature of 1000 °C. LCoNMO has much better rate capability while its specific capacity at C/5 is 10% lower than that of LNMO. At 15 C rate, their specific capacities are closed, and the LCoNMO delivers 86.2% capacity relative to C/5, and this value for LNMO is only 77.0%. The DLi + values determined by potential intermittent titration technique (PITT) test of LCoNMO are 1–2 times higher than that of LNMO in most SOC region. The LCoNMO shows very excellent cycling performance, which is the best value compared with literatures. After 1000 cycles, the LCoNMO still delivers 94.1% capacity. Finally, moreover, its coulombic efficiency and energy efficiency keep at 99.84% and over 97.3% during 1 C cycling, respectively.

Authors:
 [1];  [2];  [2];  [2]; ORCiD logo [2];  [3];  [4];  [3]
  1. Zhengzhou Univ. (China). School of Materials Science and Engineering. International Joint Research Lab. for Low-Carbon & Environmental Materials of Henan Province; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Energy Storage and Distributed Resource Division. Energy Technologies Area
  2. Zhengzhou Univ. (China). School of Materials Science and Engineering. International Joint Research Lab. for Low-Carbon & Environmental Materials of Henan Province
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Energy Storage and Distributed Resource Division. Energy Technologies Area
  4. Northeastern Univ., Shenyang (China). School of Materials and Metallurgy; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Energy Storage and Distributed Resource Division. Energy Technologies Area
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); National Natural Science Foundation of China (NNSFC); Fundamental Research Funds for the Central Universities of China; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office
OSTI Identifier:
1433095
Alternate Identifier(s):
OSTI ID: 1326447
Grant/Contract Number:  
AC02-05CH11231; 51204038; U1504521; N110802002; L1502004
Resource Type:
Accepted Manuscript
Journal Name:
Solid State Ionics
Additional Journal Information:
Journal Volume: 292; Journal ID: ISSN 0167-2738
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; high-voltage spinel; lithium nickel manganese oxide; lithium chemical diffusion coefficient; cycling performance; rate performance

Citation Formats

Mao, Jing, Ma, Mengze, Liu, Panpan, Hu, Junhua, Shao, Guosheng, Battaglia, Vince, Dai, Kehua, and Liu, Gao. The effect of cobalt doping on the morphology and electrochemical performance of high-voltage spinel LiNi0.5Mn1.5O4 cathode material. United States: N. p., 2016. Web. doi:10.1016/j.ssi.2016.05.008.
Mao, Jing, Ma, Mengze, Liu, Panpan, Hu, Junhua, Shao, Guosheng, Battaglia, Vince, Dai, Kehua, & Liu, Gao. The effect of cobalt doping on the morphology and electrochemical performance of high-voltage spinel LiNi0.5Mn1.5O4 cathode material. United States. doi:10.1016/j.ssi.2016.05.008.
Mao, Jing, Ma, Mengze, Liu, Panpan, Hu, Junhua, Shao, Guosheng, Battaglia, Vince, Dai, Kehua, and Liu, Gao. Fri . "The effect of cobalt doping on the morphology and electrochemical performance of high-voltage spinel LiNi0.5Mn1.5O4 cathode material". United States. doi:10.1016/j.ssi.2016.05.008. https://www.osti.gov/servlets/purl/1433095.
@article{osti_1433095,
title = {The effect of cobalt doping on the morphology and electrochemical performance of high-voltage spinel LiNi0.5Mn1.5O4 cathode material},
author = {Mao, Jing and Ma, Mengze and Liu, Panpan and Hu, Junhua and Shao, Guosheng and Battaglia, Vince and Dai, Kehua and Liu, Gao},
abstractNote = {In this paper, to reveal the effects of Co-doping on the electrochemical performance of micro-sized LiNi0.5Mn1.5O4 (LNMO), undoped LNMO and Co-doped LiCo0.1Ni0.45Mn1.45O4 (LCoNMO) are synthesized via a PVP-combustion method and calcined at 1000 °C for 6 h. SEM and XRD analyses suggest that Co-doping decreases the particle size and the LizNi1-zO2 impurity at the calcination temperature of 1000 °C. LCoNMO has much better rate capability while its specific capacity at C/5 is 10% lower than that of LNMO. At 15 C rate, their specific capacities are closed, and the LCoNMO delivers 86.2% capacity relative to C/5, and this value for LNMO is only 77.0%. The DLi + values determined by potential intermittent titration technique (PITT) test of LCoNMO are 1–2 times higher than that of LNMO in most SOC region. The LCoNMO shows very excellent cycling performance, which is the best value compared with literatures. After 1000 cycles, the LCoNMO still delivers 94.1% capacity. Finally, moreover, its coulombic efficiency and energy efficiency keep at 99.84% and over 97.3% during 1 C cycling, respectively.},
doi = {10.1016/j.ssi.2016.05.008},
journal = {Solid State Ionics},
number = ,
volume = 292,
place = {United States},
year = {2016},
month = {6}
}

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