A microfluidic all-vanadium photoelectrochemical cell with multi-nanostructured TiO2 photoanode

Feng, Hao; Jiao, Xiaohong; Chen, Rong; Zhu, Xun; Liu, Qiang; Ye, Dingding; Zhang, Biao

doi:10.1016/j.jpowsour.2018.09.087

Cited by 23 publications

(8 citation statements)

References 29 publications

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“…Although the overall efficiency is still limited, this work has confirmed the possibility of combing the solar battery with commercialized all vanadium redox‐flow battery. To further enhance the solar energy storage, various photoanodes such as TiO 2 /WO 3 , TiO 2 nanobelt, N‐doped TiO 2 , CdS and Ti 2 O 3 were also investigated in all‐vanadium cell or microfluidic cell . In addition, Durant et al.…”

Section: Photo‐responsive Batteries With Dual‐solid Active Materialsmentioning

confidence: 99%

Integrated Photo‐Responsive Batteries for Solar Energy Harnessing: Recent Advances, Challenges, and Opportunities

Fang

2020

ChemPlusChem

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responsive batteries that enable the effective combination of solar harvesting and energy conversion/storage functionalities render a potential solution to achieve the large-scale utilization of unlimited and cost-effective solar energy and alleviate the limits of conventional energy storage devices. The internal integration of photo-responsive electrodes into rechargeable batteries with the simplest two-electrode configuration is regarded as a reliable and appealing strategy for highly-efficient and low-cost utilization of solar energy by simplifying the device architecture and improving the energy efficiency. This progress report provides a brief review on photo-responsive batteries with integrated two-electrode configuration that can achieve solar energy conversion/storage in one single device. The basic device architecture, operating principles and practical performance of various photo-responsive systems based on solar energy harvesting in various batteries including Li ion batteries, LiÀ S batteries, LiÀ I batteries, dual-liquid redox batteries, LiÀ O 2 batteries, non-Li anode-O 2 /air batteries are summarized and discussed. Finally, the future opportunities and challenges regarding the two-electrode photo-responsive batteries are proposed.[a] Dr.

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Section: Photo‐responsive Batteries With Dual‐solid Active Materialsmentioning

confidence: 99%

Integrated Photo‐Responsive Batteries for Solar Energy Harnessing: Recent Advances, Challenges, and Opportunities

Fang

2020

ChemPlusChem

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“…[ 50 ] A typical structure is nanotube, where the larger active surface area and more porous structure can intensify the proton and mass transport and avail the light scattering to deplete the photons, and the sufficient grain boundary plays a favorable role in promoting electron transfer. [ 51 ] The other resultful strategies are to construct oriented arrays of nanowires, [ 52 ] nanorods, [ 53 ] nanobelts, [ 22a,54 ] etc., which could not only eliminate or minimize the grain boundaries to intensify the charge carrier diffusion coefficient and suppress the charge recombination but also exhibit abundant active sites and sufficient transfer pathways to promote the solar energy capture and transfer of the redox couple species.…”

Section: Energy Level Matching Between Redox Couples and Photoelectrodesmentioning

confidence: 99%

“…The summarized results are shown in Figure 13 , Tables 2 , and 3 , where Figure 13 compares the key performance parameters of SOEE and lifetime, Tables 2 and 3 present the detailed operating information of those PRBs with photoelectrode mode and solar cell mode, respectively. As shown, it can be found that, although PRBs using photoelectrode mode are easy to fabricate and various simple semiconductor photoelectrodes, including TiO 2 , WO 3 , CdS, BiVO 3 , WSe 2 , etc., [ 21a,31,47,51,154 ] have demonstrated their feasibility in early PRBs, a significant portion of these studies does not report SOEE and rare studies reached an SOEE higher than 1%. To date, the highest SOEE of 2.8% was achieved by McKone, [ 154b ] where a crystalline n ‐WSe 2 photoelectrode and I − /I 3 − ‐AQS/AQSH 2 redox couples were integrated with a lab‐scale device.…”

Section: Configurations and Performancesmentioning

confidence: 99%

Advances and Challenges in Photoelectrochemical Redox Batteries for Solar Energy Conversion and Storage

Feng

Liu

Zhang

et al. 2022

Advanced Energy Materials

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The photoelectrochemical redox battery (PRB) has been regarded as an alternative candidate for large‐scale solar energy capture, conversion, and storage as it combines the superior advantages of photoelectrochemical devices and redox batteries. As an emerging solar energy utilization technology, significant progress has been made towards promoting and proliferating the practical applications of PRBs. However, wide market penetration of PRBs is still being significantly inhibited by limited photocatalytic activity, low efficiency, among other critical issues. Furthermore, the integration of each component, including solar materials, redox couples, and membranes and their interaction in PRBs play vital roles towards achieving smooth operation and high performance. Herein, the materials, mechanisms, recent advances, and challenges in the use of PRBs are presented. The crucial influence of redox couples, photoelectrode materials, membranes on the performance of the system including how they affect solar energy capture, reaction kinetics, and internal losses are systematically discussed. In addition, the recent advances of a single‐battery of photoelectrode mode and an integrated device of solar cell mode are summarized. Furthermore, the state of the art performance of PRBs and their upscaling progress are also discussed. Finally, the challenges and perspectives for the future development of PRBs are highlighted.

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“…The inherent defects of low surface area and absent pore structure, as well as terrible transport efficiency of electron, photon, and reactants of such compact structure, significantly inhibit the photoelectrochemical conversion of the solar energy [18][19][20]. Because of this, the synthesis of TiO 2 nanostructures with sufficiently high surface area, the construction of the spatial photoanode structure for furnishing adequate active sites, and promoting the transport of both the reactants and photons as well as charger carriers become valid strategies for the photocatalytic performance improvement [21,22]. Therefore, it would be of great benefit to exploit and integrate the nanostructured TiO 2 photocatalysts in VPECs to realize efficient solar energy conversion and storage.…”

Section: Introductionmentioning

confidence: 99%

Solar Energy Storage in an All-Vanadium Photoelectrochemical Cell: Structural Effect of Titania Nanocatalyst in Photoanode

et al. 2022

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Solar energy storage in the form of chemical energy is considered a promising alternative for solar energy utilization. High-performance solar energy conversion and storage significantly rely on the sufficient active surface area and the efficient transport of both reactants and charge carriers. Herein, the structure evolution of titania nanotube photocatalyst during the photoanode fabrication and its effect on photoelectrochemical activity in a microfluidic all-vanadium photoelectrochemical cell was investigated. Experimental results have shown that there exist opposite variation trends for the pore structure and crystallinity of the photocatalyst. With the increase in calcination temperature, the active surface area and pore volume were gradually declined while the crystallinity was significantly improved. The trade-off between the gradually deteriorated sintering and optimized crystallinity of the photocatalyst then determined the photoelectrochemical reaction efficiency. The optimal average photocurrent density and vanadium ions conversion rate emerged at an appropriate calcination temperature, where both the plentiful pores and large active surface area, as well as good crystallinity, could be ensured to promote the photoelectrochemical activity. This work reveals the structure evolution of the nanostructured photocatalyst in influencing the solar energy conversion and storage, which is useful for the structural design of the photoelectrodes in real applications.

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A microfluidic all-vanadium photoelectrochemical cell with multi-nanostructured TiO2 photoanode

Cited by 23 publications

References 29 publications

Integrated Photo‐Responsive Batteries for Solar Energy Harnessing: Recent Advances, Challenges, and Opportunities

Integrated Photo‐Responsive Batteries for Solar Energy Harnessing: Recent Advances, Challenges, and Opportunities

Advances and Challenges in Photoelectrochemical Redox Batteries for Solar Energy Conversion and Storage

Solar Energy Storage in an All-Vanadium Photoelectrochemical Cell: Structural Effect of Titania Nanocatalyst in Photoanode

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