Core–shell structured poly(vinylidene fluoride)-grafted-BaTiO3 nanocomposites prepared via reversible addition–fragmentation chain transfer (RAFT) polymerization of VDF for high energy storage capacitors

2019 ◽  
Vol 10 (7) ◽  
pp. 891-904 ◽  
Author(s):  
Fatima Ezzahra Bouharras ◽  
Mustapha Raihane ◽  
Gilles Silly ◽  
Cedric Totee ◽  
Bruno Ameduri
Keyword(s):  
Energy Storage ◽  
Chain Transfer ◽  
Vinylidene Fluoride ◽  
Raft Polymerization ◽  
High Energy ◽  
Core Shell ◽  
Reversible Addition ◽  
Poly Vinylidene Fluoride ◽  
High Energy Storage

Core–shell structured PVDF-g-BaTiO3 nanocomposites were prepared by surface-initiated RAFT of VDF from BaTiO3 nanoparticles.

Microfluidic-architected core–shell flower-like δ-MnO2@graphene fibers for high energy-storage wearable supercapacitors

2021 ◽  
Vol 372 ◽  
pp. 137827
Author(s):  
Yunming Jia ◽  
Xiaying Jiang ◽  
Arsalan Ahmed ◽  
Lan Zhou ◽  
Qinguo Fan ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Energy ◽  
Core Shell ◽  
High Energy Storage ◽  
Graphene Fibers

The high energy density and efficiency of PVDF-based composites with double-shell Nd-BaTiO3 particles as fillers

2020 ◽  
Vol 13 (06) ◽  
pp. 2051042
Author(s):  
Zhong Yang ◽  
Jing Wang ◽  
Long He ◽  
Chaoyong Deng ◽  
Kongjun Zhu
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Vinylidene Fluoride ◽  
Composite Films ◽  
High Energy ◽  
Maximum Energy ◽  
Dielectric Constants ◽  
High Energy Density ◽  
Element Simulation ◽  
Poly Vinylidene Fluoride

Flexible dielectric capacitors are becoming shining stars in modern electronic devices. Ceramic particles with large dielectric constants and benign compatibility are attractive candidates to enhance the energy storage density of pristine polymer capacitors while guaranteeing their flexibility. In this work, double-shell structure of Al2O3 (AO) and dopamine (PDA) were successively coated on the Nd-doped BaTiO3 (NBT) particles and then introduced into the Poly(vinylidene fluoride) (PVDF) matrix. Obvious enhancement in dielectric constants was observed while the dielectric loss remained nearly constant. For the composite films with 1–4[Formula: see text]vol.% NBT@AO@PDA NPs, the maximum energy density of 9.1[Formula: see text]J/cm3 and energy efficiency of 65% was achieved at 430[Formula: see text]MV/m in the sample with 1[Formula: see text]vol.% filling ratio, which are 1.4 and 1.3 times larger than those of pristine PVDF at 450[Formula: see text]MV/m. The finite element simulation reveals the effective relief of the electric field concentration in the composite film induced by the AO and PDA layers. The greater improvement in the energy storage performance could be anticipated if the dispersity of NBT@AO@PDA NPs was further improved.

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