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A High‐Capacity O2‐Type Li‐Rich Cathode Material with a Single‐Layer Li2MnO3 Superstructure

A high capacity cathode is the key to the realization of high‐energy‐density lithium‐ion batteries. The anionic oxygen redox induced by activation of the LiMnO domain has previously afforded an O3‐type layered Li‐rich material used as the cathode for lithium‐ion batteries with a notably high capacit... Full description

Journal Title: Advanced Materials April 2018, Vol.30(16), pp.n/a-n/a
Main Author: Zuo, Yuxuan
Other Authors: Li, Biao , Jiang, Ning , Chu, Wangsheng , Zhang, Hao , Zou, Ruqiang , Xia, Dingguo
Format: Electronic Article Electronic Article
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ID: ISSN: 0935-9648 ; E-ISSN: 1521-4095 ; DOI: 10.1002/adma.201707255
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recordid: wj10.1002/adma.201707255
title: A High‐Capacity O2‐Type Li‐Rich Cathode Material with a Single‐Layer Li2MnO3 Superstructure
format: Article
creator:
  • Zuo, Yuxuan
  • Li, Biao
  • Jiang, Ning
  • Chu, Wangsheng
  • Zhang, Hao
  • Zou, Ruqiang
  • Xia, Dingguo
subjects:
  • O2‐Type Li‐Rich Compounds
  • Reversible Capacity
  • Superstructure
  • Voltage Fading
ispartof: Advanced Materials, April 2018, Vol.30(16), pp.n/a-n/a
description: A high capacity cathode is the key to the realization of high‐energy‐density lithium‐ion batteries. The anionic oxygen redox induced by activation of the LiMnO domain has previously afforded an O3‐type layered Li‐rich material used as the cathode for lithium‐ion batteries with a notably high capacity of 250–300 mAh g. However, its practical application in lithium‐ion batteries has been limited due to electrodes made from this material suffering severe voltage fading and capacity decay during cycling. Here, it is shown that an O2‐type Li‐rich material with a single‐layer LiMnO superstructure can deliver an extraordinary reversible capacity of 400 mAh g (energy density: ≈1360 Wh kg). The activation of a single‐layer LiMnO enables stable anionic oxygen redox reactions and leads to a highly reversible charge–discharge cycle. Understanding the high performance will further the development of high‐capacity cathode materials that utilize anionic oxygen redox processes. is prepared by a simple ion‐exchange reaction. This promoted phase shows attractive electrochemical performances with a high capacity of 400 mAh g and a perfect first coulomb efficiency near 100%. In addition, the unique geometry structure of O2‐Li‐rich cathode can inhibit the migration of transition‐metal ions, indicating that this cathode can avoid suffering voltage decay.
language:
source:
identifier: ISSN: 0935-9648 ; E-ISSN: 1521-4095 ; DOI: 10.1002/adma.201707255
fulltext: fulltext
issn:
  • 0935-9648
  • 09359648
  • 1521-4095
  • 15214095
url: Link


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titleA High‐Capacity O2‐Type Li‐Rich Cathode Material with a Single‐Layer Li2MnO3 Superstructure
creatorZuo, Yuxuan ; Li, Biao ; Jiang, Ning ; Chu, Wangsheng ; Zhang, Hao ; Zou, Ruqiang ; Xia, Dingguo
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subjectO2‐Type Li‐Rich Compounds ; Reversible Capacity ; Superstructure ; Voltage Fading
descriptionA high capacity cathode is the key to the realization of high‐energy‐density lithium‐ion batteries. The anionic oxygen redox induced by activation of the LiMnO domain has previously afforded an O3‐type layered Li‐rich material used as the cathode for lithium‐ion batteries with a notably high capacity of 250–300 mAh g. However, its practical application in lithium‐ion batteries has been limited due to electrodes made from this material suffering severe voltage fading and capacity decay during cycling. Here, it is shown that an O2‐type Li‐rich material with a single‐layer LiMnO superstructure can deliver an extraordinary reversible capacity of 400 mAh g (energy density: ≈1360 Wh kg). The activation of a single‐layer LiMnO enables stable anionic oxygen redox reactions and leads to a highly reversible charge–discharge cycle. Understanding the high performance will further the development of high‐capacity cathode materials that utilize anionic oxygen redox processes. is prepared by a simple ion‐exchange reaction. This promoted phase shows attractive electrochemical performances with a high capacity of 400 mAh g and a perfect first coulomb efficiency near 100%. In addition, the unique geometry structure of O2‐Li‐rich cathode can inhibit the migration of transition‐metal ions, indicating that this cathode can avoid suffering voltage decay.
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titleA High‐Capacity O2‐Type Li‐Rich Cathode Material with a Single‐Layer Li2MnO3 Superstructure
descriptionA high capacity cathode is the key to the realization of high‐energy‐density lithium‐ion batteries. The anionic oxygen redox induced by activation of the LiMnO domain has previously afforded an O3‐type layered Li‐rich material used as the cathode for lithium‐ion batteries with a notably high capacity of 250–300 mAh g. However, its practical application in lithium‐ion batteries has been limited due to electrodes made from this material suffering severe voltage fading and capacity decay during cycling. Here, it is shown that an O2‐type Li‐rich material with a single‐layer LiMnO superstructure can deliver an extraordinary reversible capacity of 400 mAh g (energy density: ≈1360 Wh kg). The activation of a single‐layer LiMnO enables stable anionic oxygen redox reactions and leads to a highly reversible charge–discharge cycle. Understanding the high performance will further the development of high‐capacity cathode materials that utilize anionic oxygen redox processes. is prepared by a simple ion‐exchange reaction. This promoted phase shows attractive electrochemical performances with a high capacity of 400 mAh g and a perfect first coulomb efficiency near 100%. In addition, the unique geometry structure of O2‐Li‐rich cathode can inhibit the migration of transition‐metal ions, indicating that this cathode can avoid suffering voltage decay.
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abstractA high capacity cathode is the key to the realization of high‐energy‐density lithium‐ion batteries. The anionic oxygen redox induced by activation of the LiMnO domain has previously afforded an O3‐type layered Li‐rich material used as the cathode for lithium‐ion batteries with a notably high capacity of 250–300 mAh g. However, its practical application in lithium‐ion batteries has been limited due to electrodes made from this material suffering severe voltage fading and capacity decay during cycling. Here, it is shown that an O2‐type Li‐rich material with a single‐layer LiMnO superstructure can deliver an extraordinary reversible capacity of 400 mAh g (energy density: ≈1360 Wh kg). The activation of a single‐layer LiMnO enables stable anionic oxygen redox reactions and leads to a highly reversible charge–discharge cycle. Understanding the high performance will further the development of high‐capacity cathode materials that utilize anionic oxygen redox processes. is prepared by a simple ion‐exchange reaction. This promoted phase shows attractive electrochemical performances with a high capacity of 400 mAh g and a perfect first coulomb efficiency near 100%. In addition, the unique geometry structure of O2‐Li‐rich cathode can inhibit the migration of transition‐metal ions, indicating that this cathode can avoid suffering voltage decay.
doi10.1002/adma.201707255
pages1-5
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date2018-04