Direct Formation of β-Poly(vinylidene fluoride) Thin Films by Electrostatic Spray Deposition

2017 ◽  
Vol 17 (10) ◽  
pp. 7706-7710 ◽  
Author(s):  
Seung Hwangbo ◽  
Jong-Min Kang ◽  
Gyu-Tak Kim ◽  
Young-Sun Jeon ◽  
Kyu-Seog Hwang
Keyword(s):  
Thin Films ◽  
Vinylidene Fluoride ◽  
Spray Deposition ◽  
Electrostatic Spray Deposition ◽  
Poly Vinylidene Fluoride ◽  
Direct Formation ◽  
Electrostatic Spray

Composite Nanofiber Membrane for Lithium-Ion Batteries Prepared by Electrostatic Spun/Spray Deposition

2016 ◽  
Vol 13 (1) ◽  
Author(s):  
Bin Yu ◽  
Xiao-Ming Zhao ◽  
Xiao-Ning Jiao ◽  
Dong-Yue Qi
Keyword(s):  
Lithium Ion Batteries ◽  
Vinylidene Fluoride ◽  
Spray Deposition ◽  
Lithium Ion ◽  
Cycle Performance ◽  
Thermal Shrinkage ◽  
Electrostatic Spray Deposition ◽  
Electrolyte Uptake ◽  
Poly Vinylidene Fluoride ◽  
Electrostatic Spray

A new kind of sandwiched composite membrane (SCM) for lithium-ion batteries is prepared by depositing zirconia microparticle between two layers of electrospun poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP) nanofibers by electrostatic spray deposition. The thermal shrinkage, electrochemical properties of the separator, and cycle performance for batteries with the SCM were investigated. The results show that the SCM has a high electrolyte uptake and easily absorbs electrolyte to form gelled polymer electrolytes (GPEs). The SCM GPEs have a high ionic conductivity of up to 2.06 × 10−3 S cm−1 at room temperature and show a high electrochemical stability potential of 5.4 V. With LiCoCO2 as cathode, the cell with SCM GPEs exhibits a high initial discharge capacity of 149.7 mAh g−1.

Supercapacitive Properties of Cobalt Oxide Thin Films Prepared by Electrostatic Spray Deposition Technique at Different Substrate Temperature

2016 ◽  
Vol 675-676 ◽  
pp. 261-264
Author(s):  
Kasidid Chansaengsri ◽  
Korakot Onlaor ◽  
Thutiyaporn Thiwawong ◽  
Benchapol Tunhoo
Keyword(s):  
Thin Films ◽  
Phase Transformation ◽  
Substrate Temperature ◽  
Cobalt Oxide ◽  
Spray Deposition ◽  
High Specific Capacitance ◽  
Oxide Thin Films ◽  
Electrostatic Spray Deposition ◽  
Electrostatic Spray ◽  
Substrate Temperatures

In this work, cobalt oxide thin films were prepared by electrostatic spray deposition (ESD) technique. The influence of the substrate temperatures on properties of film was investigated. Phase transformation of cobalt oxide thin films due to the effect of different substrate temperature was also observed. Cyclic voltammetry was used to measure the performance of cobalt oxide supercapacitor. At higher substrate temperature, the cobalt oxide thin films exhibit the high specific capacitance due to the effect of phase transformation in cobalt oxide films.

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