Coupling Energy Capture and Storage - Endeavoring to make a solar battery

Scientific Reports
Yukti AroraDeepa Khushalani

Abstract

Storage of solar radiation is currently accomplished by coupling two separate devices, one that captures and converts the energy into an electrical impulse (a photovoltaic cell) and another that stores this electrical output (a battery or a supercapacitor electrochemical cell). This configuration however has several challenges that stem from a complex coupled-device architecture and multiple interfaces through which charge transfer has to occur. As such presented here is a scheme whereby solar energy capture and storage have been coupled using a single bi-functional material. Two electroactive semiconductors BiVO4 (n-type) and Co3O4 (p-type) have been separately evaluated for their energy storage capability in the presence and absence of visible radiation. Each of these have the capability to function as a light harvester and also they have faradaic capability. An unprecedented aspect has been observed in that upon photo-illumination of either of these semiconductors, in situ charge carriers being generated play a pivotal role in perturbing the electroactivity of the redox species such that the majority charge carriers, viz. electrons in BiVO4 and holes in Co3O4, influence the redox response in a disproportionate manner. More i...Continue Reading

References

Aug 24, 2004·Nature Materials·C A MarianettiG Ceder
Jun 29, 2005·Chemical Communications : Chem Comm·Takurou N MurakamiTsutomu Miyasaka
Oct 13, 2006·The Journal of Physical Chemistry. B·Mingce LongYahui Wu
Feb 2, 2011·Physical Chemistry Chemical Physics : PCCP·Zongyan ZhaoZhigang Zou
Jun 28, 2011·Physical Chemistry Chemical Physics : PCCP·Charlene NgRose Amal
Oct 25, 2012·Chemical Society Reviews·Yiseul ParkKyoung-Shin Choi
Nov 4, 2016·Scientific Reports·Yukti AroraDeepa Khushalani

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Citations

Oct 27, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Yukti AroraDeepa Khushalani

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Methods Mentioned

BETA
electron diffraction
X-ray
irradiating
Scanning Electron Microscopy

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