Abstract
Li-rich layered cathode materials are very promising candidates for next generation high energy lithium ion batteries. One of the Li-rich layered cathode materials, Li1.167Ni0.233Co0.100Mn 0.467Mo0.033O2 is prepared by a co-precipitation method. In this report, we focus on anomalous changes upon cycling in Li1.167Ni0.233Co0.100Mn 0.467Mo0.033O2 cathode material in a voltage range of 2.0-4.55 V at room temperature. The structural transitions upon cycling are analyzed by ex situ X-ray diffraction. In addition, the changes in local structure during cycling are studied by X-ray absorption near edge structure. With differential capacity plots by controlling the cut-off voltage, the voltage decay during cycling is intensively studied. The continuous activation process of the residual Li2MnO3 component during cycling is correlated with voltage decay during cycling, and increasing capacity during the initial several cycles. Also, the electrochemical performance in Li 1.167Ni0.233Co0.100Mn0.467Mo 0.033O2 cathode material below 4.4 V is discussed. Furthermore, cycle performance is improved by reassembling Li 1.167Ni0.233Co0.100Mn0.467Mo 0.033O2 into another cell after washing.
| Original language | English |
|---|---|
| Pages (from-to) | 2833-2839 |
| Number of pages | 7 |
| Journal | Journal of Materials Chemistry A |
| Volume | 1 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2013 Feb 28 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Chemistry(all)
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
Cite this
Continuous activation of Li2MnO3 component upon cycling in Li1.167Ni0.233Co0.100Mn 0.467Mo0.033O2 cathode material for lithium ion batteries. / Yu, Seung-Ho; Yoon, Taeho; Mun, Junyoung; Park, Sangjin; Kang, Yoon Sok; Park, Jin Hwan; Oh, Seung M.; Sung, Yung Eun.
In: Journal of Materials Chemistry A, Vol. 1, No. 8, 28.02.2013, p. 2833-2839.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Continuous activation of Li2MnO3 component upon cycling in Li1.167Ni0.233Co0.100Mn 0.467Mo0.033O2 cathode material for lithium ion batteries
AU - Yu, Seung-Ho
AU - Yoon, Taeho
AU - Mun, Junyoung
AU - Park, Sangjin
AU - Kang, Yoon Sok
AU - Park, Jin Hwan
AU - Oh, Seung M.
AU - Sung, Yung Eun
PY - 2013/2/28
Y1 - 2013/2/28
N2 - Li-rich layered cathode materials are very promising candidates for next generation high energy lithium ion batteries. One of the Li-rich layered cathode materials, Li1.167Ni0.233Co0.100Mn 0.467Mo0.033O2 is prepared by a co-precipitation method. In this report, we focus on anomalous changes upon cycling in Li1.167Ni0.233Co0.100Mn 0.467Mo0.033O2 cathode material in a voltage range of 2.0-4.55 V at room temperature. The structural transitions upon cycling are analyzed by ex situ X-ray diffraction. In addition, the changes in local structure during cycling are studied by X-ray absorption near edge structure. With differential capacity plots by controlling the cut-off voltage, the voltage decay during cycling is intensively studied. The continuous activation process of the residual Li2MnO3 component during cycling is correlated with voltage decay during cycling, and increasing capacity during the initial several cycles. Also, the electrochemical performance in Li 1.167Ni0.233Co0.100Mn0.467Mo 0.033O2 cathode material below 4.4 V is discussed. Furthermore, cycle performance is improved by reassembling Li 1.167Ni0.233Co0.100Mn0.467Mo 0.033O2 into another cell after washing.
AB - Li-rich layered cathode materials are very promising candidates for next generation high energy lithium ion batteries. One of the Li-rich layered cathode materials, Li1.167Ni0.233Co0.100Mn 0.467Mo0.033O2 is prepared by a co-precipitation method. In this report, we focus on anomalous changes upon cycling in Li1.167Ni0.233Co0.100Mn 0.467Mo0.033O2 cathode material in a voltage range of 2.0-4.55 V at room temperature. The structural transitions upon cycling are analyzed by ex situ X-ray diffraction. In addition, the changes in local structure during cycling are studied by X-ray absorption near edge structure. With differential capacity plots by controlling the cut-off voltage, the voltage decay during cycling is intensively studied. The continuous activation process of the residual Li2MnO3 component during cycling is correlated with voltage decay during cycling, and increasing capacity during the initial several cycles. Also, the electrochemical performance in Li 1.167Ni0.233Co0.100Mn0.467Mo 0.033O2 cathode material below 4.4 V is discussed. Furthermore, cycle performance is improved by reassembling Li 1.167Ni0.233Co0.100Mn0.467Mo 0.033O2 into another cell after washing.
UR - http://www.scopus.com/inward/record.url?scp=84876583178&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84876583178&partnerID=8YFLogxK
U2 - 10.1039/c2ta00309k
DO - 10.1039/c2ta00309k
M3 - Article
VL - 1
SP - 2833
EP - 2839
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 8
ER -