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
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Dissertation
Multiscale Design of Na(Li1/3Mn2/3)O2 Cathode Material Operated by Anionic Redox Reactions for Sodium-Ion Batteries
TL;DR: In this paper, the authors propose a novel approach to solve the problem of homonymity in homonym-pairing: this paper ) and propose a solution: homonymization.
Journal ArticleDOI
One-step synthesis of WO3 coating-modified LiNi0.8Co0.15Al0.05O2 cathode material with long cycling stability for lithium-ion batteries
Journal ArticleDOI
A Comprehensive Solution for Ni-Rich Cathodes by Lithium Silicate Coating
Xin Deng,Kang Wu,Rongbin Dang,Na Li,Hong Zhang,Jianyue Jiao,Yulin Lee,Zhongbo Hu,Xiaoling Xiao +8 more
Journal ArticleDOI
Superior Li-storage behaviors of single crystal for Zr-substituted LiNi0.815Co0.15Al0.035O2 as cathode material for Li-ion battery
Shibo Shang,Neng Jiang +1 more
Journal ArticleDOI
Electrochemical investigation of double layer surface-functionalized Li-NMC cathode with nano-composite gel polymer electrolyte for Li-battery applications
Shishir Kumar Singh,Dimple P. Dutta,Himani Gupta,Nitin Srivastava,Raghvendra Raman Mishra,Dipika Meghnani,Rupesh K. Tiwari,Anupam Patel,Anurag Tiwari,Rajendra Kumar Singh +9 more
TL;DR: In this article , a double-layer (reduce graphene oxide and Li2MoO4) coated Li-NMC111 cathode is successfully synthesized which delivers improved electrochemical performance such as higher specific energy density and better rate capability.
References
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Journal ArticleDOI
Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides
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.
Journal ArticleDOI
Challenges Facing Lithium Batteries and Electrical Double‐Layer Capacitors
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TL;DR: The Review will consider some of the current scientific issues underpinning lithium batteries and electric double-layer capacitors.
Journal ArticleDOI
Review of selected electrode–solution interactions which determine the performance of Li and Li ion batteries
TL;DR: In this article, the performance of Li, Li-C anodes and Li x MO y cathodes depends on their surface chemistry in solutions, which either contribute to electrode stabilization or to capacity fading due to an increase in the electrodes' impedance.
Journal ArticleDOI
Positive Electrode Materials for Li-Ion and Li-Batteries†
TL;DR: In this article, positive electrodes for Li-ion and lithium batteries have been under intense scrutiny since the advent of the Li ion cell in 1991, and a growing interest in developing Li−sulfur and Li−air batteries that have the potential for vastly increased capacity and energy density, which is needed to power large scale systems.
Journal ArticleDOI
High-energy cathode material for long-life and safe lithium batteries
TL;DR: The results suggest that the cathode material reported on could enable production of batteries that meet the demanding performance and safety requirements of plug-in hybrid electric vehicles.