Graphene-nanoplatelets-supported NiFe-MOF: high-efficiency and ultra-stable oxygen electrodes for sustained alkaline anion exchange membrane water electrolysis

Thangavel, Pandiarajan; Ha, Miran; Kumaraguru, S.; Meena, Abhishek; Singh, Aditya Narayan; Harzandi, Ahmad M.; Kim, Kwang S.

doi:10.1039/d0ee00877j

Cited by 226 publications

(177 citation statements)

References 74 publications

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“…To solve this, Thangavel et al synthesized nickel and iron graphene-nanoplatelets-supported metal organic framework (NiFe-BTC-GNPs MOF) as an electrocatalyst for OER. [84] The durability and current density for alkaline electrolysis in the present catalytic system outperformed the state-of-the-art OER electrocatalyst IrO 2 . The presence of higher electrochemically active surface area (ECSA) in NiFe-BTC-GNPs elevates charge-transfer kinetics and promotes an ideal electrode-electrolyte interaction during OER.…”

Section: Current Status Of Aemwesmentioning

confidence: 81%

“…To solve this, Thangavel et al. synthesized nickel and iron graphene‐nanoplatelets‐supported metal organic framework (NiFe‐BTC‐GNPs MOF) as an electrocatalyst for OER [84] . The durability and current density for alkaline electrolysis in the present catalytic system outperformed the state‐of‐the‐art OER electrocatalyst IrO 2 .…”

Section: Anion Exchange Membrane Fuel Cells and Electrolyzersmentioning

confidence: 98%

“…The fabricated MEAs using PGM‐free OER electrocatalyst (NiFe‐BTC‐GNPs) and MoNi 4 /MoO 2 as HER electrocatalyst showed a record high current density of 540 mA cm −2 at 1.85 V at 70 °C using ultra‐pure water as electrolyte (Figure 10). [84] A higher current density of 1150 mA cm −2 at 1.85 V was noticed when the electrolyte was changed from ultra‐pure water to 0.1 M aqueous KOH solution (Figure 10).…”

Section: Anion Exchange Membrane Fuel Cells and Electrolyzersmentioning

confidence: 99%

“…Anode: NiFe‐BTC‐GNPs MOF; Cathode: MoNi 4 /MoO 2 ; AEMs: FAA‐3‐PK‐130. Reproduced with permission from Ref [84] ,. Copyright (2020) Royal Society of Chemistry.…”

Section: Anion Exchange Membrane Fuel Cells and Electrolyzersmentioning

confidence: 99%

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Recent Advancement on Anion Exchange Membranes for Fuel Cell and Water Electrolysis

Mandal

2020

ChemElectroChem

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Highly conductive anion exchange membranes (AEMs) are one of the few requirements to produce high power during fuel cell operation and for efficient hydrogen production through water electrolysis. The use of chemically stable and cheap AEMs with platinum group metal (PGM)‐free catalysts is suitable for reducing the overall cost of hydrogen production and fuel cell operation. The in situ durability of anion exchange membrane fuel cells (AEMFCs) and anion exchange membrane water electrolyzers (AEMWEs) for several hundred hours is necessary for the widespread application of fuel cell and water electrolysis technologies. This Minireview highlights the best results reported recently in alkaline membrane fuel cells and water electrolysis. The achievable AEMFCs performances are noteworthy using Pt‐free anode and cathode electrocatalysts. Remarkable durability in AEMFCs is witnessed, although the durability is a concern for AEMWEs. Moreover, the current challenges and future directions of AEMFCs and AEMWEs are briefly summarized.

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Section: Current Status Of Aemwesmentioning

confidence: 81%

Section: Anion Exchange Membrane Fuel Cells and Electrolyzersmentioning

confidence: 98%

Section: Anion Exchange Membrane Fuel Cells and Electrolyzersmentioning

confidence: 99%

“…Anode: NiFe‐BTC‐GNPs MOF; Cathode: MoNi 4 /MoO 2 ; AEMs: FAA‐3‐PK‐130. Reproduced with permission from Ref [84] ,. Copyright (2020) Royal Society of Chemistry.…”

Section: Anion Exchange Membrane Fuel Cells and Electrolyzersmentioning

confidence: 99%

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Recent Advancement on Anion Exchange Membranes for Fuel Cell and Water Electrolysis

Mandal

2020

ChemElectroChem

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“…However, the problems with low electrical conductivity and relatively low stability of MOF are mitigated by using highly conductive and mechanically stable graphene [12] . Now, writing in the journal Energy & Environmental Science , [13] Kwang S. Kim and colleagues synthesized nickel and iron graphene‐nanoplatelets‐supported metal‐organic framework (NiFe−BTC−GNPs MOF) and used as an electrocatalyst for water splitting reactions (Figure 1B). The NiFe−BTC−GNPs MOF was synthesized by reacting Ni(NO 3 ) 2 ⋅ 6H 2 O, Fe(NO 3 ) 3 ⋅ 9H 2 O, graphene‐nanoplatelets (GNPs), and trimesic acid (1,3,5‐benzene tricarboxylic acid) in a mixture of solvents (H 2 O : DMF : EtOH=1 : 1 : 1).…”

Section: Figurementioning

confidence: 99%

Novel Electrocatalyst for Alkaline Membrane Water Electrolysis

Mandal

2020

ChemElectroChem

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The production of H2 has aroused considerable attention worldwide as a renewable and sustainable energy source for domestic, industrial, and automotive purposes. Currently, about 95 % of H2 is produced from the steam reforming of methane. However, this process leads to the burning of fossil fuels and emits greenhouse gases into the atmosphere. Water electrolysis is an effective strategy to produce H2 in high purity. Alkaline anion exchange membrane water electrolysis (AAEMWE) is preferred to proton exchange membrane water electrolysis (PEMWE) because of the flexibility to be able to use cheaper membranes as separators and non‐noble electrocatalysts. However, the sluggish oxygen evolution reaction (OER) kinetics in AAEMWE is a bottleneck for water splitting efficiency and decreases the overall performances. Now, a novel nickel and iron graphene‐nanoplatelets‐supported metal‐organic framework‐based electrocatalyst has been developed that shows excellent durability and record‐high current density for alkaline electrolysis that outperforms the state‐of‐the‐art OER electrocatalysts.

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Composition‐Dependent Morphology, Structure, and Catalytical Performance of Nickel–Iron Layered Double Hydroxide as Highly‐Efficient and Stable Anode Catalyst in Anion Exchange Membrane Water Electrolysis

Jiang

Faid

Gomes

et al. 2022

Adv Funct Materials

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Water splitting is an environmentally friendly strategy to produce hydrogen but is limited by the oxygen evolution reaction (OER). Therefore, there is an urgent need to develop highly efficient electrocatalysts. Here, NiFe layered double hydroxides (NiFe LDH) with tunable Ni/Fe composition exhibit corresponding dependent morphology, layered structure, and chemical states, leading to higher activity and better stability than that of conventional NiFe LDH-based catalysts. The characterization data show that the low overpotentials (249 mV at 10 mA cm -2 ), ultrasmall Tafel slopes (24 mV dec -1 ), and high current densities of Ni 3 Fe LDH result from the larger fraction of trivalent Fe 3+ and the optimized local chemical environment with more oxygen coordination and ordered atomic structure for the metal site. Owing to the active intermediate species, Ni(Fe)OOH, under OER conditions and a reversible dynamic phase transition during the cycling process, the Ni 3 Fe LDH achieves a high current density of over 2 A cm -2 at 2.0 V, and durability of 400 h at 1 A cm -2 in a single cell test. This work provides insights into the relationship between the composition, electronic structure of the layer, and electrocatalytic performance, and offers a scalable and efficient strategy for developing promising catalysts to support the development of the future hydrogen economy.

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Graphene-nanoplatelets-supported NiFe-MOF: high-efficiency and ultra-stable oxygen electrodes for sustained alkaline anion exchange membrane water electrolysis

Abstract: A simple and effective strategy for fabricating high-stability alkaline anion exchange membrane water electrolyzers for large-scale hydrogen production.

Cited by 226 publications

References 74 publications

Recent Advancement on Anion Exchange Membranes for Fuel Cell and Water Electrolysis

Recent Advancement on Anion Exchange Membranes for Fuel Cell and Water Electrolysis

Novel Electrocatalyst for Alkaline Membrane Water Electrolysis

Composition‐Dependent Morphology, Structure, and Catalytical Performance of Nickel–Iron Layered Double Hydroxide as Highly‐Efficient and Stable Anode Catalyst in Anion Exchange Membrane Water Electrolysis

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