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Title: Effect of calcination temperature on the electrochemical properties of nickel-rich LiNi 0.76Mn 0.14Co 0.10O 2 cathodes for lithium-ion batteries

Abstract

High energy density, nickel (Ni)-rich, layered LiNi xMn yCo zO 2 (NMC, x ≥ 0.6) materials are promising cathodes for lithium-ion batteries. However, several technical challenges, such as fast capacity fading and high voltage instability, hinder their large-scale application. Herein, we identified an optimum calcining temperature range for the Ni-rich cathode LiNi 0.76Mn 0.14Co 0.10O 2 (NMC76). NMC76 calcined at 750–775 °C exhibits a high discharge capacity (~215 mAh g –1 when charged to 4.5 V) and retains ca. 79% of its initial capacity after 200 cycles. It also exhibits an excellent high-rate capability, delivering a capacity of more than 160 mAh g –1 even at a 10 C rate. The high performance of NMC76 is directly related to the optimized size of its primary particles (100–300 nm) (which onstitute the spherical secondary particles of >10 µm) and cation mixing. Higher calcination temperature (≥800 °C) leads to rapid increase of primary particle size, poor cycling stability, and inferior rate capability of NMC76 due to severe micro-strain and -crack formation upon repeated lithium-ion de/intercalations. Furthermore, NMC76 calcined at 750–775 °C is a very good candidate for the next generation of Li ion batteries.

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1437027
Report Number(s):
PNNL-SA-132502
Journal ID: ISSN 2211-2855; PII: S2211285518303148
Grant/Contract Number:  
AC02–05CH11231; AC05-76RL01830
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nano Energy
Additional Journal Information:
Journal Volume: 49; Journal Issue: C; Journal ID: ISSN 2211-2855
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Nickel-rich cathodes; Calcination temperature; Cycling stability; Micro-strain; Crack formation; Lithium-ion batteries

Citation Formats

Zheng, Jianming, Yan, Pengfei, Estevez, Luis, Wang, Chongmin, and Zhang, Ji -Guang. Effect of calcination temperature on the electrochemical properties of nickel-rich LiNi0.76Mn0.14Co0.10O2 cathodes for lithium-ion batteries. United States: N. p., 2018. Web. doi:10.1016/j.nanoen.2018.04.077.
Zheng, Jianming, Yan, Pengfei, Estevez, Luis, Wang, Chongmin, & Zhang, Ji -Guang. Effect of calcination temperature on the electrochemical properties of nickel-rich LiNi0.76Mn0.14Co0.10O2 cathodes for lithium-ion batteries. United States. doi:10.1016/j.nanoen.2018.04.077.
Zheng, Jianming, Yan, Pengfei, Estevez, Luis, Wang, Chongmin, and Zhang, Ji -Guang. Tue . "Effect of calcination temperature on the electrochemical properties of nickel-rich LiNi0.76Mn0.14Co0.10O2 cathodes for lithium-ion batteries". United States. doi:10.1016/j.nanoen.2018.04.077. https://www.osti.gov/servlets/purl/1437027.
@article{osti_1437027,
title = {Effect of calcination temperature on the electrochemical properties of nickel-rich LiNi0.76Mn0.14Co0.10O2 cathodes for lithium-ion batteries},
author = {Zheng, Jianming and Yan, Pengfei and Estevez, Luis and Wang, Chongmin and Zhang, Ji -Guang},
abstractNote = {High energy density, nickel (Ni)-rich, layered LiNixMnyCozO2 (NMC, x ≥ 0.6) materials are promising cathodes for lithium-ion batteries. However, several technical challenges, such as fast capacity fading and high voltage instability, hinder their large-scale application. Herein, we identified an optimum calcining temperature range for the Ni-rich cathode LiNi0.76Mn0.14Co0.10O2 (NMC76). NMC76 calcined at 750–775 °C exhibits a high discharge capacity (~215 mAh g–1 when charged to 4.5 V) and retains ca. 79% of its initial capacity after 200 cycles. It also exhibits an excellent high-rate capability, delivering a capacity of more than 160 mAh g–1 even at a 10 C rate. The high performance of NMC76 is directly related to the optimized size of its primary particles (100–300 nm) (which onstitute the spherical secondary particles of >10 µm) and cation mixing. Higher calcination temperature (≥800 °C) leads to rapid increase of primary particle size, poor cycling stability, and inferior rate capability of NMC76 due to severe micro-strain and -crack formation upon repeated lithium-ion de/intercalations. Furthermore, NMC76 calcined at 750–775 °C is a very good candidate for the next generation of Li ion batteries.},
doi = {10.1016/j.nanoen.2018.04.077},
journal = {Nano Energy},
issn = {2211-2855},
number = C,
volume = 49,
place = {United States},
year = {2018},
month = {5}
}

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