Ni-doped ZnO nanocrystalline material for electrocatalytic oxygen reduction reaction

Mondal, Aniruddha; Chouke, Prashant B.; Sonkusre, Vaishali; Lambat, Trimurti L.; Abdala, Ahmed; Mondal, Sudip; Chaudhary, Ratiram Gomaji

doi:10.1016/j.matpr.2020.04.170

Cited by 11 publications

(5 citation statements)

References 23 publications

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“…NiO is normally a p-type semiconductor with good catalytic performance and is typically employed as an electrode material. ,− NiO and ZnO can form a p-n heterojunction, which has been extensively studied in the fields of photodetectors, , photocatalysis, , and gas sensors. − The fuel cell with ZnO–NiO as electrolyte shows appreciable cell performance, which is better than a pure ZnO cell as proved in this study. Nevertheless, such performance is not enough and the flawed stability of this electrolyte composite is also a problem, which may mainly be caused by the narrow space charge region and the reduction of NiO in hydrogen. , Furthermore, the narrow depletion region of the p-n junction , limits the efficiency of charge separation and the blockage of electrons.…”

Section: Introductionmentioning

confidence: 56%

Accelerated Proton Transport Based on a p-i-n Heterostructure Membrane for Low-Temperature Solid Oxide Fuel Cells

Jiang

Wang

et al. 2021

ACS Appl. Energy Mater.

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The p-i-n junction structure has garnered great interest from researchers due to its increased photoactive area and wider space charger region compared with that of the p-n junction. Herein the ultrawide bandgap (∼6.7 eV) semiconductor alumina (Al2O3) has been introduced to construct a p-i-n junction with ZnO and NiO. ZnO–Al2O3–NiO powders are suitable for electrolyte membrane material of low-temperature solid oxide fuel cells (LT-SOFCs). The insulating Al2O3 brings a doubled depletion region and more effective charge separation compared with the p-n junction consisting of ZnO and NiO. The fuel cell based on the p-i-n junction membrane material delivers an enhanced maximum power density (MPD) of 917 mW cm–2 along with a high open-circuit voltage (OCV) of 1.013 V at 550 °C. An analysis based on the space charge region and energy band alignment in the p-i-n junction is proposed to account for the appreciable cell performance and ionic conductivity, as well as the electron blocking and charge separation ability. This study presents a practical p-i-n junction design based on ZnO–Al2O3–NiO via a solution process for LT-SOFC electrolyte material and sheds light on the extensive exploration of p-i-n junctions applied in LT-SOFCs.

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Section: Introductionmentioning

confidence: 56%

Accelerated Proton Transport Based on a p-i-n Heterostructure Membrane for Low-Temperature Solid Oxide Fuel Cells

Jiang

Wang

et al. 2021

ACS Appl. Energy Mater.

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“…It was observed that the Ni-doped-ZnO nanomaterial acted as an electrocatalyst for oxygen reduction reactions (ORR) in fuel cells [119]. Other recent applications of ZnO NPs involve wound healing properties, inhibitors of osteoclasts formation, bone formation, and acting as an anti-nociception agent [20].…”

Section: Other Applicationsmentioning

confidence: 99%

Recent developments in phycosynthesis of zinc oxide nanoparticles for biomedicine and environmental applications

Chaudhary,

Bharadvaja

2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Nanoparticles are becoming integral components in every sector considering their unmatched properties with their counter bulk material. However, in the last couple of decades, several reports suggested metal nanoparticles are toxic to biological systems either directly or indirectly. Zinc oxide nanoparticles (ZnO NPs) possess excellent optical, electrical, food packaging properties, etc. Although, the use of chemically toxic reducing agents for the synthesis of ZnO NPs induces toxicity. Therefore, biogenic synthesis of ZnO NPs has been exploited using different sources such as plant leaves, stems, fungi algae, etc NPs synthesised via these methods are biodegradable, biocompatible, low toxic, and highly effective in different applications. Algae being widely available and easy to harvest becomes a suitable candidate for ZnO NPs synthesis. Algae mediated/phycosynthesis is a technique where algae accumulate zinc oxides and reduce them to zinc ions to form ZnO NPs. The ease of synthesis of ZnO NPs using this method produces NPs in abundant quantity and of variable sizes. Intracellular and extracellular syntheses are two mechanisms of phycosynthesis of ZnO NPs. These ZnO NPs have several beneficial properties like antimicrobial, anti-cancerous, antioxidant, larvicidal, antidiabetic, etc. Additionally, it has low scale-up cost, and low energy input. This article provides detailed information about the routes of phycosynthesis of ZnO NPs using different algal strains, properties, and their potential application in the biomedical field and environmental remediation.

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“…The battery may then be thrown away, recharged, or recycled if at all feasible. This decision is based on the kind of battery, of course (secondary cells) [3,10,16].…”

Section: Dischargingmentioning

confidence: 99%

“…At the anode: Zn + 2OH -ZnO + H2O + 2e -1.25 V (10) At the cathode: HgO + H2O + e -Hg + 2OH -0.0977 V (11) Overall reactions: Zn + HgO ZnO + Hg (12) An exhaustible amount of a practically weightless reactive component is carried by the cathode whenever a metal anode is electrochemically connected with an air (oxygen) cathode. At the cathode, there is no loss of material, the air is swiftly refilled by the environment around it, and while oxygen is lost at the cathode, it is soon restored by the air around it.…”

Section: Electrochemical Reactions During Dischargementioning

confidence: 99%

“…When energy is stored and processed in an efficient and eco-friendly manner, it has a noteworthy impact on the global economy as well as the environment. There are a lot of different types of EES and conversion systems that can be used instead of fossil fuels, which comprise of typical zinc-manganese dioxide (Zn-Mn) [8] and metalair (Mg/Al/Zn-air) batteries [9], rechargeable nickel-zinc oxide [10], lithium-ion (Li-ion) [11,12] and magnesium-ion (Mg-ion) [13] batteries, and fuel cells, as favorable substitutes [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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Emerging Nanomaterials in Energy Storage

Mondal

2023

Emerging Applications of Nanomaterials

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Continuous renewable technologies can only be adequate when coupled with efficient nanomaterial based energy storage systems. These gadgets can reliably provide electricity even on overcast days or at night. To power the majority of consumer devices regardless of environmental conditions, the battery business is thriving. Among electrochemical energy storage devices (EESD), lithium-ion batteries (LiBs) have been a popular option for many eras. Even LiBs with a greater energy density (ED) and strong charge-discharge behaviour still have safety, durability problems and are expensive. Thus, various battery technologies, have attracted the attention of scientists all around the globe. However, both main and secondary batteries are used to power numerous electronic equipment. Focus will be placed on optimising battery performance, cost, and mass manufacturing in order to commercialize the batteries. This chapter will explore several battery kinds with different nanomaterials and their characteristics. Extensive details will be provided on the regulating criteria for battery performance, its fundamental design, and the operating principle of energy storage. In addition to diverse electrodes and electrolytes, this chapter provides information on the benefits and downsides of various batteries as well as ideas for future advancements in smart electronics battery systems.

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Ni-doped ZnO nanocrystalline material for electrocatalytic oxygen reduction reaction

Cited by 11 publications

References 23 publications

Accelerated Proton Transport Based on a p-i-n Heterostructure Membrane for Low-Temperature Solid Oxide Fuel Cells

Accelerated Proton Transport Based on a p-i-n Heterostructure Membrane for Low-Temperature Solid Oxide Fuel Cells

Recent developments in phycosynthesis of zinc oxide nanoparticles for biomedicine and environmental applications

Emerging Nanomaterials in Energy Storage

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