Electroactive and High Dielectric Folic Acid/PVDF Composite Film Rooted Simplistic Organic Photovoltaic Self-Charging Energy Storage Cell with Superior Energy Density and Storage Capability

被引：48
作者：
Roy, Swagata [1 ]
Thakur, Pradip [1 ,2 ]
Hoque, Nur Amin [1 ]
Bagchi, Biswajoy [1 ,4 ]
Sepay, Nayim [3 ]
Khatun, Farha [1 ]
Kool, Arpan [1 ]
Das, Sukhen [1 ]
机构：
[1] Jadavpur Univ, Dept Phys, Kolkata 700032, India
[2] Netaji Nagar Coll Women, Dept Phys, Kolkata 700092, India
[3] Jadavpur Univ, Dept Chem, Kolkata 700032, India
[4] Cent Glass & Ceram Res Inst, Fuel Cell & Battery Div, Kolkata 700032, India
来源：
ACS APPLIED MATERIALS & INTERFACES | 2017年 / 9卷 / 28期
关键词：
electroactive PVDF; MWS interfacial polarization; dielectric relaxation; self-charging photovoltaics; energy storage; BETA-PHASE NUCLEATION; FLUORIDE) THIN-FILMS; POLY(VINYLIDENE FLUORIDE); POLYVINYLIDENE FLUORIDE; SILICA NANOPARTICLES; AC CONDUCTIVITY; LITHIUM-ION; SOLAR-CELL; NANOCOMPOSITES; SUPERCAPACITOR;
D O I：
10.1021/acsami.7b05540
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Herein we report a simplistic prototype approach to develop an organic photovoltaic self-charging energy storage cell (OPSESC) rooted with biopolymer folic acid (FA) modified high dielectric and electroactive beta crystal enriched poly(vinylidene fluoride) (PVDF) composite (PFA) thin film. Comprehensive and exhaustive characterizations of the synthesized PFA composite films validate the proper formation of beta-polymorphs in PVDF. Significant improvements of both beta-phase crystallization (F(beta) approximate to 71.4%) and dielectric constant (epsilon approximate to 218 at 20 Hz for PFA of 7.5 mass %) are the twosome realizations of our current study. Enhancement of beta-phase nucleation in the composites can be thought as a contribution of the strong interaction of the FA particles with the PVDF chains. Maxwell-Wagner-Sillars (MWS) interfacial polarization approves the establishment of thermally stable high dielectric values measured over a wide temperature spectrum. The optimized high dielectric and electroactive films are further employed as an active energy storage material in designing our device named as OPSESC. Self-charging under visible light irradiation without an external biasing electrical field and simultaneous remarkable self-storage of photogenerated electrical energy are the two foremost aptitudes and the spotlight of our present investigation. Our as fabricated device delivers an impressively high energy density of 7.84 mWh/g and an excellent specific capacitance of 61 F/g which is superior relative to the other photon induced two electrode organic self-charging energy storage devices reported so far. Our device also proves the realistic utility with good recycling capability by facilitating commercially available light emitting diode.
引用
收藏
页码：24198 / 24209
页数：12
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