A review on consequences of flexible layered double hydroxide-based electrodes: fabrication and water splitting application

Nagappan, Sreenivasan; Yang, Seungmin; Adhikari, Arindam; Patel, Rajkumar; Kundu, Subrata

doi:10.1039/d3se00573a

Cited by 17 publications

(2 citation statements)

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“…1 Currently, more than 80% of the entire world's energy demand is fulfilled by the supply of carbonbased fuels. 2 This results in the emission of 90% of total CO 2 emitted by the world every year to fulfill the energy demand. 3 Furthermore, the world economy is growing rapidly, indicating the increase in energy consumption in the near future, 4 and hydrogen (H 2 ) can play a vital role in fulfilling the energy demand.…”

Section: Introductionmentioning

confidence: 99%

“…In the era of industrialization and technological advancement, energy demand is increasing sharply, and the depletion of fossil fuels and the alarming trend of climate change have given rise to deep concern . Currently, more than 80% of the entire world’s energy demand is fulfilled by the supply of carbon-based fuels . This results in the emission of 90% of total CO 2 emitted by the world every year to fulfill the energy demand .…”

Section: Introductionmentioning

confidence: 99%

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Review and Outlook of Hydrogen Production through Catalytic Processes

Kumar,

Singh,

Dutta

2024

Energy Fuels

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Hydrogen holds immense potential as a sustainable energy source as a result of its eco-friendliness and high energy density. Thus, hydrogen can solve the energy and environmental challenges. However, it is crucial to produce hydrogen using sustainable approaches in a cost-efficient manner. Currently, hydrogen can be produced by utilizing diverse feedstocks, such as natural gas, methane, ammonia, smaller organic molecules (methanol, ethanol, glycerol, and formic acid), biomass, and water. These feedstocks undergo conversion into hydrogen through different catalytic processes, including steam reforming, pyrolysis, catalytic decomposition, gasification, electrolysis, and photoassisted methods (photoelectrochemical, photocatalysis, and biophotolysis). Researchers have extensively explored various catalysts, including metals, alloys, oxides, non-oxides, carbon-based materials, and metal−organic frameworks, for these catalytic methods. The primary objectives have been to attain higher activity, selectivity, stability, and cost effectiveness in hydrogen generation. The efficacy of these catalytic processes is significantly dependent upon the performance of the catalysts, emphasizing the need for further research and development to create more efficient catalysts. However, during catalytic hydrogen production, gases like CO 2 , O 2 , CO, N 2 , etc. are produced alongside hydrogen. Separation techniques, such as pressure swing adsorption, metal hydride separation, and membrane separation, are employed to obtain high-purity hydrogen. Furthermore, a techno-economic analysis indicates that catalytic hydrogen production through steam reforming of natural gas/methane is currently viable and commercially successful. Photovoltaic electrolysis has been commercialized, but the cost of hydrogen production is still higher. Meanwhile, other photoassisted methods are in the development phase and hold the potential for future commercialization.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Review and Outlook of Hydrogen Production through Catalytic Processes

Kumar,

Singh,

Dutta

2024

Energy Fuels

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Catalysis for Carbon‐Circularity: Emerging Concepts and Role of Inorganic Chemistry

Centi,

Liu,

Perathoner

2024

ChemSusChem

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Carbon circularity is crucial for achieving a circular economy but has wider implications and impacts with respect to the circularity of materials. It has an in‐depth transformative effect on the economy. CO2 recycling is a critical component for this objective, with catalysis and inorganic chemistry playing a determining role in achieving this challenge. This concept paper presents some examples, as food for thought, of unconventional aspects in developing thermal and electro/photocatalysts for recycling CO2. The aspects discussed regard designing novel materials for CO2 thermo‐ or electro‐conversion and developing novel nanostructured electrodes.

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Unraveling the Synergistic Role of Sm³⁺ Doped NiFe‐LDH as High‐Performance Electrocatalysts for Improved Anion Exchange Membrane and Water Splitting Applications

Nagappan,

Gurusamy,

Minhas

et al. 2024

Small Methods

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Effective first‐row transition metal‐based electrocatalysts are crucial for large‐scale hydrogen energy generation and anion exchange membrane (AEM) devices in water splitting. The present work describes that SmNi0.02Fe‐LDH nanosheets on nickel foam are used as a bifunctional electrocatalyst for water splitting and AEM water electrolyzer study. Tuning the Ni‐to‐Fe ratios in NiFe‐LDH and doping with Sm ions improves the electrical structure and intrinsic activity. SmNi0.02Fe‐LDH has higher oxygen evolution reaction (OER), HER, and TWS activity, achieving 10 mA cm⁻2 current density at lower overpotentials (230 mV, 95 mV, and 1.62 V, respectively). In AEMWE cells, SmNi0.02Fe‐LDH as a cathode and anode pair exhibits outstanding activity (0.9 A cm⁻2 at 2 V) and stability over 120 h. Density Functional Theory (DFT) investigations reveal that the Sm doping in NiFe‐LDH surface enhances its bifunctional activity toward OER and HER. These findings emphasize the potential of non‐noble composites for long‐term water electrolysis in total water splitting and AEMWE applications.

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A review on consequences of flexible layered double hydroxide-based electrodes: fabrication and water splitting application

Abstract: Electrocatalytic water splitting is considered as the finest and the fastest way for the production pure hydrogen with no emission of undesired by-products. The efficiency of this reaction is highly...

Cited by 17 publications

References 158 publications

Review and Outlook of Hydrogen Production through Catalytic Processes

Review and Outlook of Hydrogen Production through Catalytic Processes

Catalysis for Carbon‐Circularity: Emerging Concepts and Role of Inorganic Chemistry

Unraveling the Synergistic Role of Sm³⁺ Doped NiFe‐LDH as High‐Performance Electrocatalysts for Improved Anion Exchange Membrane and Water Splitting Applications

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A review on consequences of flexible layered double hydroxide-based electrodes: fabrication and water splitting application

Abstract: Electrocatalytic water splitting is considered as the finest and the fastest way for the production pure hydrogen with no emission of undesired by-products. The efficiency of this reaction is highly...

Cited by 17 publications

References 158 publications

Review and Outlook of Hydrogen Production through Catalytic Processes

Review and Outlook of Hydrogen Production through Catalytic Processes

Catalysis for Carbon‐Circularity: Emerging Concepts and Role of Inorganic Chemistry

Unraveling the Synergistic Role of Sm3+ Doped NiFe‐LDH as High‐Performance Electrocatalysts for Improved Anion Exchange Membrane and Water Splitting Applications

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Unraveling the Synergistic Role of Sm³⁺ Doped NiFe‐LDH as High‐Performance Electrocatalysts for Improved Anion Exchange Membrane and Water Splitting Applications