Li-ion battery shut-off at high temperature caused by polymer phase separation in responsive electrolytes

2015 ◽  
Vol 51 (25) ◽  
pp. 5448-5451 ◽  
Author(s):  
Jesse C. Kelly ◽  
Nicholas L. Degrood ◽  
Mark E. Roberts
Keyword(s):  
Phase Separation ◽  
High Temperature ◽  
Constant Current ◽  
Li Ion Battery ◽  
Polymer Phase ◽  
Discharge Characteristics ◽  
Current Discharge ◽  
Thermally Responsive ◽  
Li Ion

Schematic of LTO/LFP battery with a thermally responsive electrolyte. The constant current discharge characteristics are shown at low and high temperature. The insets show the phase of the polymer in the cell at each temperature.

Cationic covalent organic framework based all-solid-state electrolytes

2020 ◽  
Vol 4 (4) ◽  
pp. 1164-1173 ◽  
Author(s):  
Zhen Li ◽  
Zhi-Wei Liu ◽  
Zhen-Jie Mu ◽  
Chen Cao ◽  
Zeyu Li ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid Electrolytes ◽  
Lithium Ion ◽  
Ion Conductivity ◽  
Li Ion Battery ◽  
Covalent Organic Framework ◽  
Li Ion ◽  
Lithium Ion Conductivity ◽  
Organic Framework

Two new imidazolium-based cationic COFs were synthesized and employed as all-solid electrolytes, and exhibited high lithium ion conductivity at high temperature. The assembled Li-ion battery displays preferable battery performance at 353 K.

scholarly journals PSO-based optimization for constant-current charging pattern for li-ion battery

2019 ◽  
Vol 5 (2) ◽  
pp. 72-78 ◽  
Author(s):  
Yixiao Wang ◽  
Yong Li ◽  
Li Jiang ◽  
Yuduo Huang ◽  
Yijia Cao
Keyword(s):  
Constant Current ◽  
Li Ion Battery ◽  
Li Ion ◽  
Constant Current Charging

Parameter-Free Gradient Correction for Positron States in Oxides

2017 ◽  
Vol 373 ◽  
pp. 35-40 ◽  
Author(s):  
Jan Kuriplach ◽  
Bernardo Barbiellini
Keyword(s):  
High Temperature ◽  
Positron Lifetime ◽  
High Temperature Superconductors ◽  
Computational Method ◽  
Li Ion Battery ◽  
Empirical Parameter ◽  
Positron States ◽  
Electron Positron ◽  
Li Ion ◽  
Gradient Correction

Recently, the theory of gradient-corrected electron-positron correlations in solids was improved and extended in order to avoid the adjustable, empirical parameter α which is now part of theory and a smooth function of the electron density.This new, parameter-free approach is applied to selected oxides in order to discuss their interstitial space morphology reflected by the positron charge distribution. In addition, the positron lifetime and affinity are calculated using a highly precise computational method. An attempt is made to correlate these quantities with the volume of the reduced formula unit.The results for some oxides - such as Li-ion battery cathode materials and high temperature superconductors - are discussed in detail and prospects for future experiments are given.

A high temperature operating nanofibrous polyimide separator in Li-ion battery

2013 ◽  
Vol 232 ◽  
pp. 44-48 ◽  
Author(s):  
Wen Jiang ◽  
Zhihong Liu ◽  
Qingshan Kong ◽  
Jianhua Yao ◽  
Chuanjian Zhang ◽  
...  
Keyword(s):  
High Temperature ◽  
Li Ion Battery ◽  
Temperature Operating ◽  
Li Ion

THE DESIGN OF A LI-ION BATTERY CHARGER BASED ON MULTIMODE LDO TECHNOLOGY

2009 ◽  
Vol 18 (05) ◽  
pp. 947-963 ◽  
Author(s):  
CHIA-CHUN TSAI ◽  
CHIN-YEN LIN ◽  
YUH-SHYAN HWANG ◽  
TRONG-YEN LEE
Keyword(s):  
Power Efficiency ◽  
Input Voltage ◽  
Constant Current ◽  
Voltage Regulator ◽  
Cmos Process ◽  
Li Ion Battery ◽  
Battery Charger ◽  
Charging Current ◽  
Li Ion ◽  
A Current

In this paper, we design a CMOS Li-Ion battery charger using the multimode low dropout (LDO) voltage regulator associated with a current sense to supply trickle current, constant current, and constant voltage for charging the battery in order. The protections from over charging and discharging are also considered by monitoring the charging current, reverse voltage, and battery temperature. The whole charger has been verified by HSPICE with TSMC 0.35 μm 2P4M CMOS process. The charger provides the trickle current of 150 mA, maximum charging current of 312 mA, and charging voltage of 4.2 V at the input voltage of 4.5 V. The power efficiency of 72.3% is acceptable under the power consumption of 1.28 W. The chip occupies an area of 1.78 mm × 1.77 mm including 2955 transistors.

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