A High Efficacy Self‐Charging MoSe2 Solid‐State Supercapacitor Using Electrospun Nanofibrous Piezoelectric Separator with Ionogel Electrolyte,Advanced Materials Interfaces

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A High Efficacy Self‐Charging MoSe2 Solid‐State Supercapacitor Using Electrospun Nanofibrous Piezoelectric Separator with Ionogel Electrolyte
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2018-03-07 , DOI: 10.1002/admi.201800055
Parthiban Pazhamalai ₁ , Karthikeyan Krishnamoorthy ₁ , Vimal Kumar Mariappan ₁ , Surjit Sahoo ₁ , Sindhuja Manoharan ₁ , Sang-Jae Kim _{1,

2}

Affiliation

Self‐charging supercapacitor power cell (SCSPC) received much attention for harvesting and storing energy in an integrated device, which paves the way for developing maintenance free autonomous power systems for various electronic devices. In this work, a new type of SCSPC device is fabricated comprising 2D molybdenum di‐selenide (MoSe₂) as an energy storing electrode with polyvinylidene fluoride‐co‐hexafluoropropylene/tetraethylammonium tetrafluoroborate (PVDF‐co‐HFP/TEABF₄) ion gelled polyvinylidene fluoride/sodium niobate (PVDF/NaNbO₃) as the piezopolymer electrolyte. The fabricated SCSPC delivers a specific capacitance of 18.93 mF cm⁻² with a specific energy of 37.90 mJ cm⁻² at a specific power density of 268.91 µW cm⁻² obtained at a constant discharge current of 0.5 mA. The MoSe₂ SCSPC device can be self‐charged with the aid of mechanical deformation induced using the applied compressive force, thus making it harvest and store energy. The MoSe₂ SCSPC device can be charged up to a maximum of 708 mV under a compressive force of 30 N in 100 s, and the mechanism of charge‐storage is discussed in detail. The experimental findings of this work demonstrate the high efficiency of the fabricated MoSe₂ SCSPC device, which can provide new insights for developing sustainable power sources for the next generation wearable electronic applications.

中文翻译：

使用电纺纳米纤维压电隔膜和离子凝胶电解质的高效自充电MoSe2固态超级电容器

自充电式超级电容器动力电池（SCSPC）在集成设备中收集和存储能量备受关注，这为开发用于各种电子设备的免维护自主电源系统铺平了道路。在这项工作中，制造了一种新型的SCSPC设备，其中包括二维硒化钼（MoSe ₂）作为储能电极，以及聚偏二氟乙烯-六氟丙烯/四氟硼酸四乙铵（PVDF-co-HFP / TEABF ₄）离子凝胶化的聚偏二乙烯氟化物/铌酸钠（PVDF / NaNbO ₃）作为压电聚合物电解质。所制造的SCSPC可提供18.93 mF cm ^-2的比电容和37.90 mJ cm ^-2的比能在0.5 mA的恒定放电电流下获得的比功率密度为268.91 µW cm ^-2。MoSe ₂ SCSPC设备可以借助施加的压缩力引起的机械变形进行自充电，从而使其能够收集和存储能量。MoSe ₂ SCSPC器件在100 N内的30 N压缩力下可充电至最大708 mV，并详细讨论了电荷存储的机理。这项工作的实验结果表明，制造的MoSe ₂ SCSPC器件具有很高的效率，可以为开发下一代可穿戴电子应用的可持续电源提供新的见解。

更新日期：2018-03-07

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