scholarly journals Pushing the limit of layered transition metal oxide cathodes for high-energy density rechargeable Li ion batteries

2018 ◽  
Vol 11 (5) ◽  
pp. 1271-1279 ◽  
Author(s):  
U.-H. Kim ◽  
D.-W. Jun ◽  
K.-J. Park ◽  
Q. Zhang ◽  
P. Kaghazchi ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Two Phase ◽  
Oxide Cathodes ◽  
Li Ion ◽  
Layered Transition Metal ◽  
Thermal Stability Of ◽  
W Doping

W-doping produced the two-phase (Fm3̄m and R3̄m) structure which improved the cycling and thermal stability of the Ni-rich layered cathodes.

scholarly journals Structure Evolution and Thermal Stability of High-Energy- Density Li-Ion Battery Cathode Li2VO2F

2017 ◽  
Vol 164 (7) ◽  
pp. A1552-A1558 ◽  
Author(s):  
Xiaoya Wang ◽  
Yiqing Huang ◽  
Dongsheng Ji ◽  
Fredrick Omenya ◽  
Khim Karki ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Structure Evolution ◽  
Li Ion Battery ◽  
Li Ion ◽  
Thermal Stability Of

scholarly journals Graphene/PVDF Composites for Ni-rich Oxide Cathodes toward High-Energy Density Li-ion Batteries

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2271
Author(s):  
Chang Won Park ◽  
Jung-Hun Lee ◽  
Jae Kwon Seo ◽  
Weerawat To A Ran ◽  
Dongmok Whang ◽  
...  
Keyword(s):  
Energy Density ◽  
Polyvinylidene Fluoride ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Force Microscopy ◽  
Atomic Force ◽  
Oxide Cathodes ◽  
Polymeric Binders ◽  
Li Ion

Li-ion batteries (LIBs) employ porous, composite-type electrodes, where few weight percentages of carbonaceous conducting agents and polymeric binders are required to bestow electrodes with electrical conductivity and mechanical robustness. However, the use of such inactive materials has limited enhancements of battery performance in terms of energy density and safety. In this study, we introduced graphene/polyvinylidene fluoride (Gr/PVdF) composites in Ni-rich oxide cathodes for LIBs, replacing conventional conducting agents, carbon black (CB) nanoparticles. By using Gr/PVdF suspensions, we fabricated highly dense LiNi0.85Co0.15Al0.05O2 (NCA) cathodes having a uniform distribution of conductive Gr sheets without CB nanoparticles, which was confirmed by scanning spreading resistance microscopy mode using atomic force microscopy. At a high content of 99 wt.% NCA, good cycling stability was shown with significantly improved areal capacity (Qareal) and volumetric capacity (Qvol), relative to the CB/PVdF-containing NCA electrode with a commercial-level of electrode parameters. The NCA electrodes using 1 wt.% Gr/PVdF (0.9:0.1) delivered a high Qareal of ~3.7 mAh cm−2 (~19% increment) and a high Qvol of ~774 mAh cm−3 (~18% increment) at a current rate of 0.2 C, as compared to the conventional NCA electrode. Our results suggest a viable strategy for superseding conventional conducting agents (CB) and improving the electrochemical performance of Ni-rich cathodes for advanced LIBs.

Optimized electron occupancy of solid-solution transition metals for suppressing the oxygen evolution of Li2MnO3

2021 ◽  
Vol 9 (14) ◽  
pp. 9337-9346
Author(s):  
Erhong Song ◽  
Yifan Hu ◽  
Ruguang Ma ◽  
Yining Li ◽  
Xiaolin Zhao ◽  
...  
Keyword(s):  
Solid Solution ◽  
Energy Density ◽  
Transition Metals ◽  
Oxygen Evolution ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Increasing Demand ◽  
Layered Cathodes

Li-rich layered cathodes based on Li2MnO3 have exhibited extraordinary promise to satisfy the rapidly increasing demand for high-energy density Li-ion batteries.

Novel low-cost, high-energy-density (>700 Wh kg−1) Li-rich organic cathodes for Li-ion batteries

2021 ◽  
Vol 415 ◽  
pp. 128509
Author(s):  
Qihang Yu ◽  
Wu Tang ◽  
Yang Hu ◽  
Jian Gao ◽  
Ming Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Li Ion

Fluorinated cyclic siloxane additives for high energy density Li-ion batteries with high nickel cathodes and silicon–carbon anodes

2021 ◽  
Vol 511 ◽  
pp. 230437
Author(s):  
Ningbo Xu ◽  
Yiou Sun ◽  
Jingwen Shi ◽  
Junning Chen ◽  
Gaopan Liu ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Cyclic Siloxane ◽  
Li Ion Batteries ◽  
Silicon Carbon ◽  
High Nickel ◽  
Li Ion ◽  
Carbon Anodes

Accordion-like stretchable Li-ion batteries with high energy density

2019 ◽  
Vol 17 ◽  
pp. 136-142 ◽  
Author(s):  
Changmin Shi ◽  
Tianyang Wang ◽  
Xiangbiao Liao ◽  
Boyu Qie ◽  
Pengfei Yang ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Li Ion

Thermal stability of LiPF6-based electrolyte and effect of contact with various delithiated cathodes of Li-ion batteries

2009 ◽  
Vol 191 (2) ◽  
pp. 575-581 ◽  
Author(s):  
H.F. Xiang ◽  
H. Wang ◽  
C.H. Chen ◽  
X.W. Ge ◽  
S. Guo ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Thermal Stability Of

Design and Realization of an Intelligent Protection Circuit for Li-Ion Batteries

2011 ◽  
Vol 282-283 ◽  
pp. 82-85
Author(s):  
Xiao Peng Ji ◽  
Xing Feng Guan ◽  
Zhen Hong Wang
Keyword(s):  
Energy Density ◽  
Circuit Design ◽  
Theoretical Basis ◽  
Safety Concern ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Safety Protection ◽  
Li Ion ◽  
Protection Circuit

Li-ion batteries have been widely used. However, the safety concern is always serious due to its high energy density. In order to improve the safety of the batteries, it is necessary to use the protection integration circuit. In this article, the concept for realizing the safety protection of Li-ion batteries during charging and discharging is described briefly. A circuit design using Seiko BMS chip S-8209 is purposed. Based on this, a simulation was performed and verified using Pspice program, which provides a theoretical basis for the circuit design.

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