Investigating oxidative stability of lithium-ion battery electrolytes using synthetic charge-discharge profile voltammetry

In this work, Fe2O3 nanooval is successfully synthesized with variation of glycine composition of 9, 12, and 15 mmol at hydrothermal temperature of 160 °C. The Fe2O3 nanooval is indexed by XRD as α-Fe2O3. SEM and TEM images show that the 12 mmol of glycine has the largest diameter with the perfect nanooval form. Nyquist plot shows that the 12 mmol of glycine sample has the best conductivity value of 8.26x10-5 S/m. The CV of sample 12 mmol delivers the best intercalate/de-intercalate with ΔV of 0.82 V. The 12 mmol sample shows the largest specific discharge capacity of 631.62 mAh/g. It is attributed to high conductivity and high kinetics reaction of Li ion during charge-discharge process. Therefore, Fe2O3 nanooval is a promising candidate as anode for lithium-ion battery.

Download Full-text

Theoretical Investigations on Oxidative Stability of Solvents and Oxidative Decomposition Mechanism of Ethylene Carbonate for Lithium Ion Battery Use

The Journal of Physical Chemistry B ◽

10.1021/jp9074064 ◽

2009 ◽

Vol 113 (52) ◽

pp. 16596-16602 ◽

Cited By ~ 163

Author(s):

Lidan Xing ◽

Weishan Li ◽

Chaoyang Wang ◽

Fenglong Gu ◽

Mengqing Xu ◽

...

Keyword(s):

Oxidative Stability ◽

Lithium Ion Battery ◽

Ethylene Carbonate ◽

Lithium Ion ◽

Decomposition Mechanism ◽

Oxidative Decomposition ◽

Theoretical Investigations

Download Full-text

Experimental Study on Depth of Discharge and Cycle Life of Lithium-Ion Battery

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.319.373 ◽

2013 ◽

Vol 319 ◽

pp. 373-377

Author(s):

Chan Ming Chen ◽

Song Hua Deng ◽

Zhen Po Wang

Keyword(s):

Experimental Data ◽

Lithium Ion Battery ◽

Lithium Ion ◽

Cycle Life ◽

Calculating Method ◽

Power Battery ◽

Depth Of Discharge ◽

Three Samples ◽

Life Model ◽

Charge Discharge

To find out how depth of discharge affecting cycle life of lithium-ion power battery, an experiment was conducted. Three samples of lithium-ion were tested separately with BAITE charge/discharge equipment. Condition of test was set as the same except depth of discharge. Capacity remaining of samples was recorded during testing. Based on processing and analysis of data of the testing, cycle life model of lithium-ion power battery with parameter of depth of discharge was deduced, which was verified by the experimental data. The model provided a theoretical calculating method of cycle life, which would be helpful for precise management of the lithium-ion battery.

Download Full-text

LiFe1-xMnxPO4/C COMPOSITE AS CATHODE MATERIAL FOR LITHIUM ION BATTERY

Functional Materials Letters ◽

10.1142/s1793604711002160 ◽

2011 ◽

Vol 04 (04) ◽

pp. 319-322 ◽

Cited By ~ 8

Author(s):

AI FANG LIU ◽

ZU BIAO WEN ◽

YA FEI LIU ◽

ZHONG HUA HU

Keyword(s):

Electron Microscope ◽

Electrochemical Performance ◽

Cathode Material ◽

Lithium Ion Battery ◽

Average Particle Size ◽

High Capacity ◽

Lithium Ion ◽

Carbon Layer ◽

Average Particle ◽

Charge Discharge

LiFe 1-x Mn x PO 4/ C composites were prepared as cathode material for lithium ion battery via solid-state reaction and using glucose as reducing agent and carbon source. The crystal structure and morphology were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM). The resultant samples were pure olivine compounds with an orthorhombic structure. Their electrochemical performance was studied by galvanostatic charge–discharge test and cyclic voltammetry. The results showed that the sample LiFe0.8Mn0.2PO4/C with an average particle size of 400 nm exhibited the largest discharge capacity of 150 mAh g-1, excellent reversibility of charge–discharge and high capacity retention of 97% after a 50-cycle CV scanning. The improved electrical conductivity corresponding to the fine carbon layer around the LiFe0.8Mn0.2PO4 individual particle can be responsible for all these excellent electrochemical performance.

Download Full-text