Electrochemical performance of Li- and Mn- rich cathodes in full cells with prelithiated graphite negative electrodes

Prasant Kumar Nayak; Tirupathi Rao Penki; Boris Markovsky; Doron Aurbach

doi:10.1021/acsenergylett.7b00007

Electrochemical performance of Li- and Mn- rich cathodes in full cells with prelithiated graphite negative electrodes

Prasant Kumar Nayak, Tirupathi Rao Penki, Boris Markovsky, Doron Aurbach

Department of Chemistry

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

47 Scopus citations

Abstract

Li- and Mn-rich layered oxide cathodes are known to suffer from capacity fading and average discharge voltage decay upon cycling. In the present study, the improved cycling stability of a Liand Mn-rich cathode Li_1.2Ni_0.27Mn_0.40Co_0.13O₂ in full cells is reported. The electrochemical performance of the Li- and Mn-rich cathodes comprising Li_1.2Ni_0.13Mn_0.54Co_0.13O₂ and Li_1.2Ni_0.27Mn_0.40Co_0.13O₂ was tested in Li-ion full cells with graphite as anode material at 30 °C. The full cells with Li_1.2Ni_0.13Mn_0.54Co_0.13O₂ cathodes exhibited initially high capacities of about 250 mAh g1, which fades rapidly to 130 mAh g^-1 after 120 cycles at C/5 rate. However, full cells comprising Li_1.2Ni_0.27Mn_0.40Co_0.13O₂ cathodes exhibited an initial capacity of about 190 mAh g-1 with very stable cycle-life, i.e., about 185 mAh g-1 after 150 cycles at C/5 rate. Also, these cathodes possess higher rate c a pabilityas compared to full cell scomprising Li_1.2Ni_0.13Mn_0.54Co_0.13O₂ cathodes. Thus, the electrochemical performance of Li_1.2Ni_0.27Mn_0.40Co_0.13O₂ cathodes in full cells with prelithiated graphite anodes is promising for practical high energy density Li-ion batteries. These results indicate the positive influence of higher Ni content in Li- and Mn-rich cathodes for better electrochemical performance in practical Li-ion batteries.

Original language	English
Pages (from-to)	544-548
Number of pages	5
Journal	ACS Energy Letters
Volume	2
Issue number	3
DOIs	https://doi.org/10.1021/acsenergylett.7b00007
State	Published - 10 Mar 2017

Bibliographical note

Funding Information:
This work was partially supported by the Israel Science Foundation (ISF) as part of the INREP project and also by the Israel Ministry of Science and Technology in the framework of the Israel−India binational collaboration program.

Publisher Copyright:
© 2017 American Chemical Society.

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title = "Electrochemical performance of Li- and Mn- rich cathodes in full cells with prelithiated graphite negative electrodes",

abstract = "Li- and Mn-rich layered oxide cathodes are known to suffer from capacity fading and average discharge voltage decay upon cycling. In the present study, the improved cycling stability of a Liand Mn-rich cathode Li1.2Ni0.27Mn0.40Co0.13O2 in full cells is reported. The electrochemical performance of the Li- and Mn-rich cathodes comprising Li1.2Ni0.13Mn0.54Co0.13O2 and Li1.2Ni0.27Mn0.40Co0.13O2 was tested in Li-ion full cells with graphite as anode material at 30 °C. The full cells with Li1.2Ni0.13Mn0.54Co0.13O2 cathodes exhibited initially high capacities of about 250 mAh g1, which fades rapidly to 130 mAh g-1 after 120 cycles at C/5 rate. However, full cells comprising Li1.2Ni0.27Mn0.40Co0.13O2 cathodes exhibited an initial capacity of about 190 mAh g-1 with very stable cycle-life, i.e., about 185 mAh g-1 after 150 cycles at C/5 rate. Also, these cathodes possess higher rate c a pabilityas compared to full cell scomprising Li1.2Ni0.13Mn0.54Co0.13O2 cathodes. Thus, the electrochemical performance of Li1.2Ni0.27Mn0.40Co0.13O2 cathodes in full cells with prelithiated graphite anodes is promising for practical high energy density Li-ion batteries. These results indicate the positive influence of higher Ni content in Li- and Mn-rich cathodes for better electrochemical performance in practical Li-ion batteries.",

author = "Nayak, {Prasant Kumar} and Penki, {Tirupathi Rao} and Boris Markovsky and Doron Aurbach",

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AU - Aurbach, Doron

PY - 2017/3/10

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N2 - Li- and Mn-rich layered oxide cathodes are known to suffer from capacity fading and average discharge voltage decay upon cycling. In the present study, the improved cycling stability of a Liand Mn-rich cathode Li1.2Ni0.27Mn0.40Co0.13O2 in full cells is reported. The electrochemical performance of the Li- and Mn-rich cathodes comprising Li1.2Ni0.13Mn0.54Co0.13O2 and Li1.2Ni0.27Mn0.40Co0.13O2 was tested in Li-ion full cells with graphite as anode material at 30 °C. The full cells with Li1.2Ni0.13Mn0.54Co0.13O2 cathodes exhibited initially high capacities of about 250 mAh g1, which fades rapidly to 130 mAh g-1 after 120 cycles at C/5 rate. However, full cells comprising Li1.2Ni0.27Mn0.40Co0.13O2 cathodes exhibited an initial capacity of about 190 mAh g-1 with very stable cycle-life, i.e., about 185 mAh g-1 after 150 cycles at C/5 rate. Also, these cathodes possess higher rate c a pabilityas compared to full cell scomprising Li1.2Ni0.13Mn0.54Co0.13O2 cathodes. Thus, the electrochemical performance of Li1.2Ni0.27Mn0.40Co0.13O2 cathodes in full cells with prelithiated graphite anodes is promising for practical high energy density Li-ion batteries. These results indicate the positive influence of higher Ni content in Li- and Mn-rich cathodes for better electrochemical performance in practical Li-ion batteries.

AB - Li- and Mn-rich layered oxide cathodes are known to suffer from capacity fading and average discharge voltage decay upon cycling. In the present study, the improved cycling stability of a Liand Mn-rich cathode Li1.2Ni0.27Mn0.40Co0.13O2 in full cells is reported. The electrochemical performance of the Li- and Mn-rich cathodes comprising Li1.2Ni0.13Mn0.54Co0.13O2 and Li1.2Ni0.27Mn0.40Co0.13O2 was tested in Li-ion full cells with graphite as anode material at 30 °C. The full cells with Li1.2Ni0.13Mn0.54Co0.13O2 cathodes exhibited initially high capacities of about 250 mAh g1, which fades rapidly to 130 mAh g-1 after 120 cycles at C/5 rate. However, full cells comprising Li1.2Ni0.27Mn0.40Co0.13O2 cathodes exhibited an initial capacity of about 190 mAh g-1 with very stable cycle-life, i.e., about 185 mAh g-1 after 150 cycles at C/5 rate. Also, these cathodes possess higher rate c a pabilityas compared to full cell scomprising Li1.2Ni0.13Mn0.54Co0.13O2 cathodes. Thus, the electrochemical performance of Li1.2Ni0.27Mn0.40Co0.13O2 cathodes in full cells with prelithiated graphite anodes is promising for practical high energy density Li-ion batteries. These results indicate the positive influence of higher Ni content in Li- and Mn-rich cathodes for better electrochemical performance in practical Li-ion batteries.

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Electrochemical performance of Li- and Mn- rich cathodes in full cells with prelithiated graphite negative electrodes

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