Enhanced energy storage of a UV-irradiated three-dimensional nanostructured TiO2–Ni(OH)2 composite film and its electrochemical discharge in the dark

Zhang, Liying; Xu, Lei; Wang, Jianming; Cai, Jiwen; Xu, Jing; Zhou, Huan; Zhong, Yuan; Chen, Dan; Cao, Chenzhong

doi:10.1016/j.jelechem.2012.07.041

Cited by 12 publications

(3 citation statements)

References 55 publications

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“…Apart from application-oriented studies, conventional systems, such as TiO 2 ÀWO 3 , [75][76][77][78][79][80] and TiO 2 ÀNi(OH) 2 , [81][82][83][84][85] have been exclusively studied for their photocharging and discharging mechanisms, which could be potentially useful for the development of day-night-based photocatalytic systems. It is known that photocatalysis is being widely employed for pollutant degradation,w ater splitting, and fuel conversion applications.…”

Section: Other Applicationsmentioning

confidence: 99%

Materials and Mechanisms of Photo‐Assisted Chemical Reactions under Light and Dark Conditions: Can Day–Night Photocatalysis Be Achieved?

Sakar

Nguyen

et al. 2018

ChemSusChem

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The photoassisted catalytic reaction, conventionally known as photocatalysis, is expanding into the field of energy and environmental applications. It is widely known that the discovery of TiO2‐assisted photochemical reactions has led to several unique applications, such as degradation of pollutants in water and air, hydrogen production through water splitting, fuel conversion, cancer treatment, antibacterial activity, self‐cleaning glasses, and concrete. These multifaceted applications of this phenomenon can be enriched and expanded further if this process is equipped with more tools and functions. The term “photoassisted” catalytic reactions clearly emphasizes that photons are required to activate the catalyst; this can be transcended even into the dark if electrons are stored in the material for the later use to continue the catalytic reactions in the absence of light. This can be achieved by equipping the photocatalyst with an electron‐storage material to overcome current limitations in photoassisted catalytic reactions. In this context, this article sheds lights on the materials and mechanisms of photocatalytic reactions under light and dark conditions. The manifestation of such systems could be an unparalleled technology in the near future that could influence all spheres of the catalytic sciences.

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Section: Other Applicationsmentioning

confidence: 99%

Materials and Mechanisms of Photo‐Assisted Chemical Reactions under Light and Dark Conditions: Can Day–Night Photocatalysis Be Achieved?

Sakar

Nguyen

et al. 2018

ChemSusChem

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“…This approach can make more pore space usable in NF and the loading of active material can be dramatically increased as the available surface area is greatly enlarged for the deposition of active materials. Various materials, such as carbon-based nanomaterials 29 30 31 32 33 34 , TiN 35 , TiO 2 36 , FeO x 37 , NiS x 38 , Ni 39 , (Ni,Co)O x /(OH) x 39 40 41 , have been employed as cores for Ni(OH) 2 shell growth. The Ni, Co oxides based cores are of great interests, because they not just serve as an agent to increase the surface area but also contribute to the total capacitance owing to their own high electrochemical activities 40 42 43 44 45 46 47 48 49 .…”

mentioning

confidence: 99%

Chemical insights into the roles of nanowire cores on the growth and supercapacitor performances of Ni-Co-O/Ni(OH)2 core/shell electrodes

Yin

Tang

Zhang

et al. 2016

Sci Rep

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Nanostructured core/shell electrodes have been experimentally demonstrated promising for high-performance electrochemical energy storage devices. However, chemical insights into the significant roles of nanowire cores on the growth of shells and their supercapacitor behaviors still remain as a research shortfall. In this work, by substituting 1/3 cobalt in the Co3O4 nanowire core with nickel, a 61% enhancement of the specific mass-loading of the Ni(OH)2 shell, a tremendous 93% increase of the volumetric capacitance and a superior cyclability were achieved in a novel NiCo2O4/Ni(OH)2 core/shell electrode in contrast to a Co3O4/Ni(OH)2 one. A comparative study suggested that not only the growth of Ni(OH)2 shells but also the contribution of cores were attributed to the overall performances. Importantly, their chemical origins were revealed through a theoretical simulation of the core/shell interfacial energy changes. Besides, asymmetric supercapacitor devices and applications were also explored. The scientific clues and practical potentials obtained in this work are helpful for the design and analysis of alternative core/shell electrode materials.

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“…It has been rapidly developed in the past decade, largely stimulated by the TiO 2 −WO 3 system with anticorrosion effect in dark2. To date, several energy storage material systems have been developed, such as TiO 2 -WO 3 12346789, TiO 2 -MoO 3 10, Au:TiO 2 -WO 3 5, Au:TiO 2 -MoO 3 5, SrTiO 3 -WO 3 11, TiO 2 -Ni(OH) 2 1213 and TiO 2 -V 2 O 5 14, which have been widely used in photocatalysis, anticorrosion and sterilization in dark.…”

mentioning

confidence: 99%

A full-sunlight-driven photocatalyst with super long-persistent energy storage ability

Liu

Zhu

et al. 2013

Sci Rep

101

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A major drawback of traditional photocatalysts like TiO2 is that they can only work under illumination, and the light has to be UV. As a solution for this limitation, visible-light-driven energy storage photocatalysts have been developed in recent years. However, energy storage photocatalysts that are full-sunlight-driven (UV-visible-NIR) and possess long-lasting energy storage ability are lacking. Here we report, a Pt-loaded and hydrogen-treated WO3 that exhibits a strong absorption at full-sunlight spectrum (300–1,000 nm), and with a super-long energy storage time of more than 300 h to have formaldehyde degraded in dark. In this new material system, the hydrogen treated WO3 functions as the light harvesting material and energy storage material simultaneously, while Pt mainly acts as the cocatalyst to have the energy storage effect displayed. The extraordinary full-spectrum absorption effect and long persistent energy storage ability make the material a potential solar-energy storage and an effective photocatalyst in practice.

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Enhanced energy storage of a UV-irradiated three-dimensional nanostructured TiO2–Ni(OH)2 composite film and its electrochemical discharge in the dark

Cited by 12 publications

References 55 publications

Materials and Mechanisms of Photo‐Assisted Chemical Reactions under Light and Dark Conditions: Can Day–Night Photocatalysis Be Achieved?

Materials and Mechanisms of Photo‐Assisted Chemical Reactions under Light and Dark Conditions: Can Day–Night Photocatalysis Be Achieved?

Chemical insights into the roles of nanowire cores on the growth and supercapacitor performances of Ni-Co-O/Ni(OH)2 core/shell electrodes

A full-sunlight-driven photocatalyst with super long-persistent energy storage ability

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