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
Nickel‐Rich Layered Lithium Transition‐Metal Oxide for High‐Energy Lithium‐Ion Batteries
TL;DR: The performance enhancement of Ni-rich cathode materials through structure tuning or interface engineering is summarized and the underlying mechanisms and remaining challenges will also be discussed.
Journal ArticleDOI
Guidelines and trends for next-generation rechargeable lithium and lithium-ion batteries.
TL;DR: This review summarizes the current trends and provides guidelines towards achieving next-generation rechargeable Li and Li-ion batteries with higher energy densities, better safety characteristics, lower cost and longer cycle life by addressing batteries using high-voltage cathodes, metal fluoride electrodes, chalcogen electrodes, Li metal anodes, high-capacity anodes as well as useful electrolyte solutions.
Journal ArticleDOI
High-voltage positive electrode materials for lithium-ion batteries
TL;DR: This review gives an account of the various emerging high-voltage positive electrode materials that have the potential to satisfy the requirements of lithium-ion batteries either in the short or long term, including nickel-rich layered oxides, lithium- rich layeredOxides, high- voltage spinel oxide compounds, and high- voltage polyanionic compounds.
Journal ArticleDOI
Prospect and Reality of Ni-Rich Cathode for Commercialization
TL;DR: In this paper, important stability issues and in-depth understanding of the nickel-rich cathode materials on the basis of the industrial electrode fabrication condition for the commercialization of the NRC-compliant cathode material are reviewed.
Journal ArticleDOI
A New Coating Method for Alleviating Surface Degradation of LiNi0.6Co0.2Mn0.2O2 Cathode Material: Nanoscale Surface Treatment of Primary Particles
TL;DR: This approach resulted in improved structural and thermal stability in the severe cycling-test environment at 60 °C between 3.0 and 4.45 V and at elevated temperatures, showing a rate capability that was comparable to that of the pristine sample.
References
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Journal ArticleDOI
Electrochemistry and Structural Chemistry of LiNiO2 (R3̅m) for 4 Volt Secondary Lithium Cells
TL;DR: LiNiO[sub 2] was used for a 4 V secondary lithium cell in this paper, which exhibited more than 150 mAh/g of rechargeable capacity in the voltage range between 2.5 and 4.2 V in 1M LiClO(sub 4] propylene carbonate solution.
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Performance of layered Li(Ni1/3Co1/3Mn1/3)O2 as cathode for Li-ion batteries
TL;DR: In this article, Li(Ni 1/3 Co 1/1/3 Mn 1 /3 )O 2 was prepared by mixed hydroxide method and characterised by means of X-ray diffraction, Xray photoelectron spectroscopy (XPS), cyclic voltammetry and charge-discharge cycling.
Journal ArticleDOI
Surface Characterization of Electrodes from High Power Lithium-Ion Batteries
A. M. Andersson,A. M. Andersson,Daniel P. Abraham,Richard T. Haasch,Scott MacLaren,Jun Liu,Khalil Amine +6 more
TL;DR: In this paper, X-ray photoelectron spectroscopy and scanning electron microscopy were used to study electrode samples obtained from 18650-type lithium-ion cells subjected to accelerated calendar-life testing at temperatures ranging from 25 to 70 C and at states of charge from 40 to 80%.
Journal ArticleDOI
The Current Move of Lithium Ion Batteries Towards the Next Phase
TL;DR: In this paper, the current market trends of lithium ion batteries are discussed as a primary topic, followed by an overview of anode and cathode material candidates of the battery for xEVs and ESSs based on their electrochemical properties.
Journal ArticleDOI
Higher, Stronger, Better…︁ A Review of 5 Volt Cathode Materials for Advanced Lithium-Ion Batteries
TL;DR: In this paper, the state of the art, achievements, and challenges in the field of high-voltage cathode materials for Li-ion cells are reviewed and analyzed, and some suggestions regarding possible approaches for future development are also presented.