Electrochromic performance of chromium-doped Co3O4 nanocrystalline thin films prepared by nebulizer spray technique

Dhas, C. Ravi; Venkatesh, R.; Sivakumar, R.; Dhandayuthapani, T.; Subramanian, B.; Sanjeeviraja, C.; Raj, A. Moses Ezhil

doi:10.1016/j.jallcom.2018.12.385

Cited by 22 publications

(6 citation statements)

References 45 publications

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“…Dhas et al reported a cathodic shift of pre-oxidation peak for Co 3 O 4 with Cr doping, where it is suggested that Cr dopant facilitates ion transport through Co 3 O 4 . [35] The Cr doped samples in the study by Dhas et al showed much poorer onset spinel, and checking its activity towards OER, showed that with increasing Cr content in the spinel framework, the Co 3 + oxidation peak shifted anodically. [15] It is difficult to interpret the results in the absence of standard materials and performance metrics.…”

Section: Electrochemical Testingmentioning

confidence: 96%

Promotion of Electrochemical Water Oxidation Activity of Au Supported Cobalt Oxide upon Addition of Cr: Insights using in situ Raman Spectroscopy

et al. 2021

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Mixed metal oxides based on cobalt oxide are important target material as water oxidation catalyst in alkaline media. Significant enhancement of electrochemical oxygen evolution activity was observed for Au supported cobalt oxide, upon addition of Cr. CoO x /Au and Co[Cr]O x /Au were studied side by side to understand the effects of the addition of Cr in such a system. The presence of Cr resulted in a significant lowering of onset potentials~150 mV. In-situ Raman spectroscopy was used to characterize the material. The catalyst was found to develop into oxide entirely in situ. Cr was found to stabilize lower oxidation states of Co, both during catalyst formation and oxygen evolution. Isotopic substitution studies alongside in situ Raman Spectroscopy showed that OER onset potential strongly correlated with the appearance of metastable AuÀ OOH peak.

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Section: Electrochemical Testingmentioning

confidence: 96%

Promotion of Electrochemical Water Oxidation Activity of Au Supported Cobalt Oxide upon Addition of Cr: Insights using in situ Raman Spectroscopy

et al. 2021

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“…[62] However, the material is still being widely used, [63,64] for example, recent work (Figure 2b) reports that incorporating WO 3 with Ag in nanowire-like assembly results in an excellent flexible ECD. Following WO 3 , oxides of the nearby materials (in the periodic table), such as molybdenum, [65] chromium, [66] and manganese, [67] too were examined for EC behavior. On the other hand in the category of organic polymers, PANI is one of the most widely studied materials due to its high conductivity, and easy synthesis among many.…”

Section: Active Chromophores' Categoriesmentioning

confidence: 99%

Recipe for Fabricating Optimized Solid‐State Electrochromic Devices and Its Know‐How: Challenges and Future

Ghosh

Kandpal

Rani

et al. 2023

Advanced Optical Materials

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Electrochromism, a well‐defined phenomenon of bias‐induced reversible color switching, has led to real applications in several smart devices including smart windows and self‐powered batteries and solar panels. For these applications, the electrochromic (EC) materials need to be integrated as solid‐state devices. Deciphering ways to recreate a conventional device requires understanding of basic structure and its working. A thorough discussion is provided here regarding various materials that can act as chromophores when treated with some electric bias in addition to a few parameters that dictatehow fairly the device performs. The next important aspect is the device design, the skeleton of which usually includes conducting substrates, EC active materials, and an electrolyte. Step‐by‐step, various available device paradigms are discussed starting from a single EC electrode then joining a blank substrate to fabricate a monolayer electrochromic device (ECD) moving onto bi‐layer ECDs, and finally, all‐in‐one EC gel, which is devoid of any proper layered pattern. A thorough discussion regarding various application‐oriented structural modifications is provided. Challenges and the areas that need to be addressed in immediate future are discussed.

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“…Zuo et al developed a Co 3 O 4 nanowall arrays with a noticeable porous structure and cross‐linked network to enhance porosity and accelerate the transport of ions/electrons, resulting in a large modulation in the range of 0.4–1 μm and a switching speed lower than 1 s. [ 127 ] Moreover, the active EC film showed excellent EC performance, such as high coloration efficiency and long cycling life. Dhas et al [ 128 ] fabricated Cr‐doped Co 3 O 4 thin films and studied the influence of EC performance affected by Cr concentration. The results showed that the doped film had better optical modulation and higher coloration efficiency compared with pristine Co 3 O 4 film at 0.4–0.9 μm.…”

Section: Inorganic Dual‐band Ecms and Ecdsmentioning

confidence: 99%

Dual‐band electrochromic materials for energy‐saving smart windows

Zhao

Wang

Zhu

et al. 2022

Carbon Neutralization

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Smart windows refer to those which can dynamically modulate the transmitted light by changing their colors. Dual-band electrochromic materials (ECMs) refer to materials that can change their colors and regulate light transmission in both visible (VIS) and infrared (IR) regions under different voltages. The dual-band ECMs-based building windows can thus regulate the indoor temperature to reduce the energy consumption for heating and airconditioning systems. Therefore, the wide application of ECMs in building windows will contribute a lot to establishing an energy-saving society. During the past decades, enormous efforts have been made to improve the performance of dual-band ECMs. This review presents a summary of the recent progress of dual-band ECMs, focusing on their modulation mechanism, material design, and performance optimization. Finally, the challenges and outlook of dual-band ECMs are also discussed.

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Electrochromic performance of chromium-doped Co3O4 nanocrystalline thin films prepared by nebulizer spray technique

Cited by 22 publications

References 45 publications

Promotion of Electrochemical Water Oxidation Activity of Au Supported Cobalt Oxide upon Addition of Cr: Insights using in situ Raman Spectroscopy

Promotion of Electrochemical Water Oxidation Activity of Au Supported Cobalt Oxide upon Addition of Cr: Insights using in situ Raman Spectroscopy

Recipe for Fabricating Optimized Solid‐State Electrochromic Devices and Its Know‐How: Challenges and Future

Dual‐band electrochromic materials for energy‐saving smart windows

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