A Study of High-Voltage LiNi0.5Mn1.5O4 and High-Capacity Li1.5Ni0.25Mn0.75O2.5 Blends

Xiaofeng Zhang; Rui Xu; Li Li; Cun Yu; Yang Ren; IIias Belharouak

doi:10.1149/2.014308jes

A Study of High-Voltage LiNi_0.5Mn_1.5O₄ and High-Capacity Li_1.5Ni_0.25Mn_0.75O_2.5 Blends

Xiaofeng Zhang, Rui Xu, Li Li, Cun Yu, Yang Ren, IIias Belharouak

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

13 Scopus citations

Abstract

Spinel-layered (S-L) cathode blends of LiNi_0.5Mn_1.5O_4- and Li_1.5Ni_0.25Mn_0.75O_2.5 were prepared by physical mixing during electrode fabrication. The incorporation of the spinel component in the blends (S:L ratio = 1:1) has led to the following advantages: 1) the initial-cycle efficiency, which is usually lower than 80% for the layered component, increased to 90% as the extra capacity of the spinel below 3.0 V could be utilized in the blends; 2) the rate capability of the cells was improved and reached a maximum for the blend; 3) the cycling behavior of the cells was comparable to that of the pure layered component, but superior to that of the pure spinel component cycled between 2.0 and 4.8 V. The study revealed that the introduction of the spinel component in the blends could mitigate some of the weaknesses of the layered component, and vice versa.

Original language	English
Pages (from-to)	A1079-A1083
Journal	Journal of the Electrochemical Society
Volume	160
Issue number	8
DOIs	https://doi.org/10.1149/2.014308jes
State	Published - Jan 2013
Externally published	Yes

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title = "A Study of High-Voltage LiNi0.5Mn1.5O4 and High-Capacity Li1.5Ni0.25Mn0.75O2.5 Blends",

abstract = "Spinel-layered (S-L) cathode blends of LiNi0.5Mn1.5O4- and Li1.5Ni0.25Mn0.75O2.5 were prepared by physical mixing during electrode fabrication. The incorporation of the spinel component in the blends (S:L ratio = 1:1) has led to the following advantages: 1) the initial-cycle efficiency, which is usually lower than 80% for the layered component, increased to 90% as the extra capacity of the spinel below 3.0 V could be utilized in the blends; 2) the rate capability of the cells was improved and reached a maximum for the blend; 3) the cycling behavior of the cells was comparable to that of the pure layered component, but superior to that of the pure spinel component cycled between 2.0 and 4.8 V. The study revealed that the introduction of the spinel component in the blends could mitigate some of the weaknesses of the layered component, and vice versa.",

author = "Xiaofeng Zhang and Rui Xu and Li Li and Cun Yu and Yang Ren and IIias Belharouak",

year = "2013",

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T1 - A Study of High-Voltage LiNi0.5Mn1.5O4 and High-Capacity Li1.5Ni0.25Mn0.75O2.5 Blends

AU - Zhang, Xiaofeng

AU - Xu, Rui

AU - Li, Li

AU - Yu, Cun

AU - Ren, Yang

AU - Belharouak, IIias

PY - 2013/1

Y1 - 2013/1

N2 - Spinel-layered (S-L) cathode blends of LiNi0.5Mn1.5O4- and Li1.5Ni0.25Mn0.75O2.5 were prepared by physical mixing during electrode fabrication. The incorporation of the spinel component in the blends (S:L ratio = 1:1) has led to the following advantages: 1) the initial-cycle efficiency, which is usually lower than 80% for the layered component, increased to 90% as the extra capacity of the spinel below 3.0 V could be utilized in the blends; 2) the rate capability of the cells was improved and reached a maximum for the blend; 3) the cycling behavior of the cells was comparable to that of the pure layered component, but superior to that of the pure spinel component cycled between 2.0 and 4.8 V. The study revealed that the introduction of the spinel component in the blends could mitigate some of the weaknesses of the layered component, and vice versa.

AB - Spinel-layered (S-L) cathode blends of LiNi0.5Mn1.5O4- and Li1.5Ni0.25Mn0.75O2.5 were prepared by physical mixing during electrode fabrication. The incorporation of the spinel component in the blends (S:L ratio = 1:1) has led to the following advantages: 1) the initial-cycle efficiency, which is usually lower than 80% for the layered component, increased to 90% as the extra capacity of the spinel below 3.0 V could be utilized in the blends; 2) the rate capability of the cells was improved and reached a maximum for the blend; 3) the cycling behavior of the cells was comparable to that of the pure layered component, but superior to that of the pure spinel component cycled between 2.0 and 4.8 V. The study revealed that the introduction of the spinel component in the blends could mitigate some of the weaknesses of the layered component, and vice versa.

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A Study of High-Voltage LiNi_0.5Mn_1.5O₄ and High-Capacity Li_1.5Ni_0.25Mn_0.75O_2.5 Blends

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