Electrochemical investigation of niobium doped nickel selenide nanostructure for supercapacitor devices

Alshammari, Dalal A.; Ahmed, Inas A.; Alahmari, Saeed D.; Abdullah, Muhammad; Aman, Salma; Ahmad, Naseeb; Henaish, A.M.A.; Ahmad, Zubair; Farid, Hafiz Muhammad Tahir; El-Bahy, Zeinhom M.

doi:10.1016/j.est.2023.109886

Journal of Energy Storage

2024

DOI: 10.1016/j.est.2023.109886

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Electrochemical investigation of niobium doped nickel selenide nanostructure for supercapacitor devices

Dalal A. Alshammari,

Inas A. Ahmed,

Saeed D. Alahmari

et al.

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2024

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Cited by 24 publications

References 54 publications

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Coral reefs‐like shape AgI/polypyrrole nanocomposite through the intercalation of iodide ions in the network for optoelectronic applications

Rabia,

Elsayed,

Aldosari

et al. 2024

Env Prog and Sustain Energy

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A promising optoelectronic device for light sensing in both the UV and Vis regions is fabricated. This device consists of a nanocomposite resembling coral reefs, termed AgI/polypyrrole‐iodide (AgI/Ppy‐I). The resulting nanocomposite exhibits a hierarchical structure wherein larger particles, comprising smaller particles ~45 nm and an optical bandgap measuring 2.4 eV, form a coral reef‐like morphology. The sensitivity estimation of this constructed optoelectronic device relies on evaluating the current density (Jph) values. Under illumination, a remarkable augmentation in current density (Jph = 0.46 mA cm−2) with a promising value compared to the dark condition's 0.12 mA cm−2. The optical characteristics of this nanocomposite make it highly conducive to efficient UV–Vis light sensing. The values of D (detectivity), reflecting the device's sensitivity, are notably high at 4 × 108 and 3.82 × 108 Jones in the UV and Vis regions, correspondingly. The potential of this photodetector is reinforced by the computed R‐values, which denote the device's responsivity. With values of 1.8 and 1.72 mA W−1 across these two optical regions, correspondingly, it showcases the nanocomposite's effectiveness in transforming incident light into electrical current. Moreover, the appeal of this photodetector extends beyond its performance characteristics. Its cost‐effectiveness, eco‐friendliness, straightforward preparation methodology, scalability for mass production, and high stability collectively. The versatility of this material, coupled with its advantageous attributes, opens avenues for its widespread application, catering to the diverse needs of industries and contributing to the accessibility of efficient optoelectronic devices for a broader audience.

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Coral reefs‐like shape AgI/polypyrrole nanocomposite through the intercalation of iodide ions in the network for optoelectronic applications

Rabia,

Elsayed,

Aldosari

et al. 2024

Env Prog and Sustain Energy

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Partial Selenization Strategy for Fabrication of Ni_0.85Se@NiCr‐LDH Heterostructure as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting

Nitika,

Dutta

2024

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NiCr‐LDH and its partial selenization as Ni0.85Se@NiCr‐LDH heterostructure is established here as an alkaline water electrolyzer for achieving enhanced overall water splitting efficiency. The hydrothermally synthesized optimized batch of Ni0.85Se@NiCr‐LDH is thoroughly characterized to elucidate its structure, morphology, and composition. Compared to pristine NiCr‐LDH, the batch of Ni0.85Se@NiCr‐LDH exhibits exceptional alkaline OER and HER activity with low overpotentials of 258 and 85 mV at 10 mA cm−2, respectively. Besides, Ni0.85Se@NiCr‐LDH also exhibits excellent acidic HER with an overpotential of only 61 mV at 10 mA cm−2, indicating that Ni0.85Se@NiCr‐LDH can operate effectively across a wide pH range. The excellent electrochemical stability of Ni0.85Se@NiCr‐LDH for 24 h operation is attributed to the formation of a thin layer of SeOx during OER operation. The role of selenization and the effect of Cr in the LDH lattice toward enhanced electrocatalytic water splitting is discussed. The outstanding OER and HER performances of Ni0.85Se@NiCr‐LDH are attributed to the higher electrochemical active surface area, favorable conditions for adsorption of HER/OER intermediates, low charge transfer resistance, and improved conductivity. The practical application of Ni0.85Se@NiCr‐LDH as a bifunctional electrocatalyst for overall water splitting is reflected from the low cell voltage of 1.548 V at 10 mA cm−2.

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Synthesis and characterization of rGO/AgCeO2 nanocomposite for photocatalytic application

Vasanth,

Mathivanan,

Krishnasamy

2024

J Mater Sci: Mater Electron

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Electrochemical investigation of niobium doped nickel selenide nanostructure for supercapacitor devices

Cited by 24 publications

References 54 publications

Coral reefs‐like shape AgI/polypyrrole nanocomposite through the intercalation of iodide ions in the network for optoelectronic applications

Coral reefs‐like shape AgI/polypyrrole nanocomposite through the intercalation of iodide ions in the network for optoelectronic applications

Partial Selenization Strategy for Fabrication of Ni_0.85Se@NiCr‐LDH Heterostructure as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting

Synthesis and characterization of rGO/AgCeO2 nanocomposite for photocatalytic application

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Electrochemical investigation of niobium doped nickel selenide nanostructure for supercapacitor devices

Cited by 24 publications

References 54 publications

Coral reefs‐like shape AgI/polypyrrole nanocomposite through the intercalation of iodide ions in the network for optoelectronic applications

Coral reefs‐like shape AgI/polypyrrole nanocomposite through the intercalation of iodide ions in the network for optoelectronic applications

Partial Selenization Strategy for Fabrication of Ni0.85Se@NiCr‐LDH Heterostructure as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting

Synthesis and characterization of rGO/AgCeO2 nanocomposite for photocatalytic application

Contact Info

Product

Resources

About

Partial Selenization Strategy for Fabrication of Ni_0.85Se@NiCr‐LDH Heterostructure as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting