Journal ArticleDOI
A new type of protective surface layer for high-capacity Ni-based cathode materials: nanoscaled surface pillaring layer.
TLDR
This material showed excellent structural stability due to a pillar layer, corresponding to 85% capacity retention between 3.0 and 4.5 V at 60 °C after 100 cycles, and the amount of heat generation was decreased by 40%, compared to LiNi0.15O2.Abstract:
A solid solution series of lithium nickel metal oxides, Li[Ni1–xMx]O2 (with M = Co, Mn, and Al) have been investigated intensively to enhance the inherent structural instability of LiNiO2. However, when a voltage range of Ni-based cathode materials was increased up to >4.5 V, phase transitions occurring above 4.3 V resulted in accelerated formation of the trigonal phase (P3m1) and NiO phases, leading to and pulverization of the cathode during cycling at 60 °C. In an attempt to overcome these problems, LiNi0.62Co0.14Mn0.24O2 cathode material with pillar layers in which Ni2+ ions were resided in Li slabs near the surface having a thickness of ∼10 nm was prepared using a polyvinylpyrrolidone (PVP) functionalized Mn precursor coating on Ni0.7Co0.15Mn0.15(OH)2. We confirmed the formation of a pillar layer via various analysis methods (XPS, HRTEM, and STEM). This material showed excellent structural stability due to a pillar layer, corresponding to 85% capacity retention between 3.0 and 4.5 V at 60 °C after 10...read more
Citations
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Journal ArticleDOI
The effects of washing on LiNi0.83Co0.13Mn0.04O2 cathode materials
Shiguo Xu,Wang Xingning,Zhang Wenyan,Kaihua Xu,Zhou Xiaoyan,Zhang Yujun,Haibo Wang,Jianqing Zhao +7 more
TL;DR: In this article, the effects of washing on the structure and electrochemical properties of LiNi0.83Co0.13Mn0.04O2 cathode material were researched.
Journal ArticleDOI
A review of nickel-rich layered oxide cathodes: synthetic strategies, structural characteristics, failure mechanism, improvement approaches and prospects
Peter Steinmüller,Yao Lv,Shifei Huang,Naveed Iqbal,Yufeng Zhao,Swagata Roy,Xionggang Lu,Yanglong Hou,Jiujun Zhang +8 more
TL;DR: In this paper, the structural characteristics and synthetic methods of nickel-rich layered oxides are systematically reviewed from atomic scale to macro-scale along with the latest literature review, and a brief analysis of the perspectives is also presented with several possible research directions for technical and commercial success of nickel rich layered oxide cathodes.
Journal ArticleDOI
A review of nickel-rich layered oxide cathodes: synthetic strategies, structural characteristics, failure mechanism, improvement approaches and prospects
Peter Steinmüller,Naveed Iqbal +1 more
TL;DR: In this article , the structural characteristics and synthetic methods of nickel-rich layered oxides are systematically reviewed from atomic scale to macro-scale along with the latest literature review, and a brief analysis of the perspectives is also presented with several possible research directions for technical and commercial success of nickel rich layered oxide cathodes.
Journal ArticleDOI
Thiophene-initiated polymeric artificial cathode-electrolyte interface for Ni-rich cathode material
Bum-Jin Chae,Jun Hwa Park,Hye Ji Song,Seol Heui Jang,Kwangeun Jung,Yeong Don Park,Taeeun Yim +6 more
TL;DR: In this paper, a poly(thiophene)-based artificial cathode-electrolyte interphase (CEI)-immobilized Ni-rich NCM cathode material was synthesized using a simple and convenient one-step spin-coating process.
Journal ArticleDOI
Effects of Li2MnO3 coating on the high-voltage electrochemical performance and stability of Ni-rich layer cathode materials for lithium-ion batteries
TL;DR: In this article, Li2MnO3 was used as the coating layer of Ni-rich layer cathode material to improve the performance of highvoltage cathode materials, resulting in an improvement of the initial discharge capacities of 202.5 mA h g−1 and the capacity retention of 86.4% over 50 cycles at 3.0-4.5 V vs. Li/Li+.
References
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TL;DR: The effective ionic radii of Shannon & Prewitt [Acta Cryst. (1969), B25, 925-945] are revised to include more unusual oxidation states and coordinations as mentioned in this paper.
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Review of selected electrode–solution interactions which determine the performance of Li and Li ion batteries
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Journal ArticleDOI
Positive Electrode Materials for Li-Ion and Li-Batteries†
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Journal ArticleDOI
High-energy cathode material for long-life and safe lithium batteries
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