【摘 要】
：
Energy storage is pivotal for the continuous utilization of solar energy suffering from the intermittency issue.Herein,we demonstrate a solar rechargeable flow cell (SRFC) based on photoelectrochemical regeneration of vanadium redox species for in-situ so
【机 构】
：
State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences
论文部分内容阅读
Energy storage is pivotal for the continuous utilization of solar energy suffering from the intermittency issue.Herein,we demonstrate a solar rechargeable flow cell (SRFC) based on photoelectrochemical regeneration of vanadium redox species for in-situ solar energy harvest and storage.In this device,TiO2 and MWCNT/acetylene black (MWCNT/AB) composite are served as the photoanode and the counter electrode,respectively,with all vanadium redox couples,VO2+/VO2+ and VO2+/V3+,as solar energy storage media.Benefitting from solar energy,the cell can be photocharged under a bias as low as 0.1 V,which is much lower than the discharge voltage of ～0.5 V.Photocharged under the optimized condition,the cell delivers a discharge energy of 23.0 mWh/L with 67.4％ input electric energy savings.This prototype work may inspire the rational design for cost-effective solar energy storage devices.
其他文献
Flower-like Ni3P2O8 and flower-like Fe3P2O8.8H2O have been successfully synthesized by a simple chemical precipitation method.X-ray diffraction (XRD) patterns reveal an amorphous phase formation of nickel phosphate (Ni3P2O8) and pure monoclinic phase of F
To ensure the infiltration of spiro-OMeTAD into the quantum dot-sensitized photoanode and to consider the limit of the hole diffusion length in the spiro-OMeTAD layer,a rutile TiO2 nanorod array with a length of 200 nm,a diameter of 20 nm and an areal den
Sorption enhanced steam methane reforming (SE-SMR) was performed to maximize hydrogen production and contemporary remove CO2 from the product stream using bi-functional sorbent-catalyst compounds.Samples were tested at two different scales:micro and labor
In this work we have studied the effect of 1,2-dimethoxyethane (1,2-DME) addition (from 0 to 90 vol％) on the electrochemical behaviour of 1-ethyl-3-methylimidazolium bis(trifluoromethylsulphonyl)imide (EMlmTFSI) as an electrolyte for supercapacitors,using
The increasing demand of high-performance supercapacitors has aroused great interest in developing specific capacitance and energy density.Active carbon (AC) has attracted much attention as a promising electrode material for electric double-layer capacito
Transition metal phosphides are a class of promising electrocatalysts for hydrogen evolution reaction (HER) to replace noble metals.In this work,we for the first time synthesize carbon supported CoP nanoparticles with the average particle sizes from 3.3 t
Pyrolyzed Fe-Nx/C materials derived from Fe-doped ZIF-8 are recently emerged as promising alternatives to noble metal platinum-based catalysts towards oxygen reduction reaction (ORR) and elucidating the dependacne of Fe source on the active site structure
Three new organic dyes based on triphenylamine with a structure of A-D-A-D-A (D1),A-D-A (D2) and D-A (D3) were designed,theoretically calculated and synthesized for dye-sensitized solar cells.Dye D1 exhibits a broader absorption than D2 and D3,due to the
Hybrid adsorbents for CO2 capture were prepared by coassembling laponite (LP) nanosheets and 1-nbutyl-3-methylimidazolium chloride (BMIMCl).The prepared BMIMCl/LP layered hybrids were systematically characterized.The interlayer distance of the BMIMCl/LP l
Controlling the concentration of defects in reduced graphene oxide (rGO) to tailor its electrical and physicochemical properties has remained a significant challenge.We report that extent of microwave (MW)-driven annealing of rGO is influenced significant