Electrochemical properties of reheated molten salt synthesized (M1/2Sb1/2Sn)O4 (M=V, Fe, In) cycled in the voltage range of 0.005–1.0 and 0.005–3.0V

A nonstoichiometric spinel phase (Li1.02Mn1.90Y0.02O4-yF0.08) was synthesized using natural polymer net method. It was characterized by XRD and XPS. The particle size and shape of the expected compounds were observed by Transmission Electron Microscopy technique. The composition of new spinel phase was checked by ICP. The electrochemical properties of the new spinel phase (Li1.02Mn1.90Y0.02O4-yF0.08) were also investigated. The results showed that the Li1.02Mn1.90Y0.02O4-yF0.08 behaved excellent recharge ability to compare with stoichiometric LiMn2O4. The initial discharge capacity of the battery was 128.5 mAh/g when current density was 1 mA·cm-2 over voltage range of 4.4 to 3.0V. The discharge capacity could retain about 96% after 100 cycles when metallic lithium was anode. The outstanding electrochemical properties of Li1.02Mn1.90Y0.02O4-yF0.08 make it possible as a promising cathode material. The novel synthesis method provides a simple and effective route for inorganic material synthesis.

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Electrochemical properties of PVP-derived carbon nanospheres with various porosity and heteroatom contents in anode voltage range over full-cell operation

Journal of Industrial and Engineering Chemistry ◽

10.1016/j.jiec.2021.09.012 ◽

2021 ◽

Author(s):

Yeonsong Kim ◽

Ho-Sung Yang ◽

Jihyun Yoon ◽

Myeong Jun Jo ◽

Ji Ho Youk ◽

...

Keyword(s):

Electrochemical Properties ◽

Anode Voltage ◽

Carbon Nanospheres ◽

Voltage Range ◽

Full Cell

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Electrochemical Properties and Structural Stability of Core-Shell Structure Cathode Material (Li[(Ni0.8Co0.15Mn0.05)1-x(Ni0.4Co0.15Mn0.45)x]O2) cycled in the high voltage range

ECS Meeting Abstracts ◽

10.1149/ma2008-02/1/86 ◽

2008 ◽

Keyword(s):

Cathode Material ◽

Electrochemical Properties ◽

Structural Stability ◽

High Voltage ◽

Shell Structure ◽

Core Shell ◽

Voltage Range ◽

Core Shell Structure

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Electrochemical Properties of Ca-Sb Alloys in Molten Salt Electrolytes

ECS Meeting Abstracts ◽

10.1149/ma2012-02/53/3678 ◽

2012 ◽

Keyword(s):

Electrochemical Properties ◽

Molten Salt ◽

Molten Salt Electrolytes

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The Effect of Cooling Rate in Molten Salt Electro-Carburisation Process

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.576.264 ◽

2012 ◽

Vol 576 ◽

pp. 264-267 ◽

Cited By ~ 2

Author(s):

Nancy J. Siambun ◽

Willey Y.H. Liew ◽

George Z. Chen ◽

Daniel A. Jewell ◽

Yeo K. Beng

Keyword(s):

Mild Steel ◽

Molten Salt ◽

Optical Microscopy ◽

Cooling Rate ◽

Molten Carbonate ◽

Micro Hardness ◽

Salt Mixture ◽

Voltage Range ◽

New Process ◽

Martensite Structure

In the recent development of a new process of electro-carburisation of mild steel in 800 °C molten carbonate based salts, further investigation has been carried out to study the effects of the cooling rate after the electro-carburisation process. In the process, the mild steel to be carburised was made the cathode and an inert SnO2 as anode. Salt mixture of Na2CO3-NaCl (mole ratio 4:1) was used as the electrolyte, and the process was carried out at voltage range of 1.0 to 2.5 V for 60 minutes, and thereafter cooled at certain rate. As revealed by the optical microscopy, the microstructural changes in samples that have been electro-carburised and thereafter cooled either rapidly or naturally in air, were featured by the increase of the carbon rich in the martensite structure at the expense of the original ferrite phase near the surface of the samples. Micro-hardness profiles measured from the surface to the centre of the electro-carburised sample presented clear evidence of carbon penetration as a function of the electrolysis voltage, and significant effects of cooling rate after the electro-carburisation process.

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