Catalytic efficiency of LDH@carbonaceous hybrid nanocomposites towards water splitting mechanism: Impact of plasma and its significance on HER and OER activity

Kulkarni, Rakesh; Lingamdinne, Lakshmi Prasanna; Karri, Rama Rao; Momin, Zahid Husain; Koduru, Janardhan Reddy; Chang, Yoon-Young

doi:10.1016/j.ccr.2023.215460

Cited by 39 publications

(5 citation statements)

References 123 publications

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“…Layered double hydroxide (LDH) has become a research hotspot due to its unique electronic distribution, high specific surface area, and layered structure, leading to remarkable catalytic performance [23,55,58]. However, LDH-coated electrodes have some inherent disadvantages, such as operational damage and poor durability under harsh conditions [59,60]. In the previous Section 3.1, the effects of different voltage waveforms on the performance of plate Ni cathode were explored, among which the square-wave voltage had the strongest effect.…”

Section: Surface Characterization Of Plate Ni Cathode With Fluctuatin...mentioning

confidence: 99%

Influence of Power Fluctuation on Ni-Based Electrode Degradation and Hydrogen Evolution Reaction Performance in Alkaline Water Splitting: Probing the Effect of Renewable Energy on Water Electrolysis

Liu,

Lin,

Zhang

et al. 2024

Catalysts

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The combination of water electrolysis and renewable energy to produce hydrogen is a promising way to solve the climate and energy crisis. However, the fluctuating characteristics of renewable energy not only present a significant challenge to the use of water electrolysis electrodes, but also limit the development of the hydrogen production industry. In this study, the effects of three different types of waveforms (square, step, and triangle, which were used to simulate the power input of renewable energy) on the electrochemical catalysis behavior of Ni plate cathodes for HER was investigated. During the test, the HER performance of the Ni cathode increased at first and then slightly decreased. The fluctuating power led to the degradation of the Ni cathode surface, which enhanced the catalysis effect by increasing the catalytic area and the active sites. However, prolonged operation under power fluctuations could have damaged the morphology of the electrode surface and the substances comprising this surface, potentially resulting in a decline in catalytic efficiency. In addition, the electrochemical catalysis behavior of the prepared FeNiMo-LDH@NiMo/SS cathode when subjected to square-wave potential with different fluctuation amplitudes was also extensively studied. A larger amplitude of fluctuating power led to a change in the overpotential and stability of the LDH electrode, which accelerated the degradation of the cathode. This research provides a technological basis for the coupling of water electrolysis and fluctuating renewable energy and thus offers assistance to the development of the “green hydrogen” industry.

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Section: Surface Characterization Of Plate Ni Cathode With Fluctuatin...mentioning

confidence: 99%

Influence of Power Fluctuation on Ni-Based Electrode Degradation and Hydrogen Evolution Reaction Performance in Alkaline Water Splitting: Probing the Effect of Renewable Energy on Water Electrolysis

Liu,

Lin,

Zhang

et al. 2024

Catalysts

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“…Non-precious metal catalytic materials have been widely studied due to their low cost, abundant reserves and excellent catalytic performance. 17–19 Transition metal chalcogenides, especially sulfides, have a strong redox ability, and their low electronegativity and excellent electrocatalytic performance make them some of the most desirable catalytic materials. 20,21 However, the low conductivity of transition metal sulfides and their long-term durability have hindered their widespread application in alkaline electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Reasonable regulation of flexible sulfur-based bifunctional catalytic electrodes for efficient seawater splitting

Lei,

Ma,

Shao

et al. 2024

Inorg. Chem. Front.

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“…Nonetheless, these kinds of precious metal catalysts are limited in their applications because of their high price, scarcity, and low bifunctional activities [11,12]. Therefore, designing an eco-friendly and energy-saving catalyst for water reduction and oxidation in a cathode and anode is very urgent [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Strong and Hierarchical Ni(OH)2/Ni/rGO Composites as Multifunctional Catalysts for Excellent Water Splitting

Wang,

Song,

et al. 2024

Catalysts

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The lack of efficient and non-precious metal catalysts poses a challenge for electrochemical water splitting in hydrogen and oxygen evolution reactions. Here, we report on the preparation of growing Ni(OH)2 nanosheets in situ on a Ni and graphene hybrid using supergravity electrodeposition and the hydrothermal method. The obtained catalyst displays outstanding performance with small overpotentials of 161.7 and 41 mV to acquire current densities of 100 and 10 mA cm−2 on hydrogen evolution reaction, overpotentials of 407 and 331 mV to afford 100 and 50 mA cm−2 on oxygen evolution reaction, and 10 mA·cm−2 at a cell voltage of 1.43 V for water splitting in 1 M KOH. The electrochemical activity of the catalyst is higher than most of the earth-abundant materials reported to date, which is mainly due to its special hierarchical structure, large surface area, and good electrical conductivity. This study provides new tactics for enhancing the catalytic performance of water electrolysis.

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Catalytic efficiency of LDH@carbonaceous hybrid nanocomposites towards water splitting mechanism: Impact of plasma and its significance on HER and OER activity

Cited by 39 publications

References 123 publications

Influence of Power Fluctuation on Ni-Based Electrode Degradation and Hydrogen Evolution Reaction Performance in Alkaline Water Splitting: Probing the Effect of Renewable Energy on Water Electrolysis

Influence of Power Fluctuation on Ni-Based Electrode Degradation and Hydrogen Evolution Reaction Performance in Alkaline Water Splitting: Probing the Effect of Renewable Energy on Water Electrolysis

Reasonable regulation of flexible sulfur-based bifunctional catalytic electrodes for efficient seawater splitting

Strong and Hierarchical Ni(OH)2/Ni/rGO Composites as Multifunctional Catalysts for Excellent Water Splitting

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