Recent advances in proton exchange membrane water electrolysis

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(16), P. 5652 - 5683

Published: Jan. 1, 2023

This review scrutinizes recent progress in PEMWE system including mechanisms, the correlation among structure-composition–performance, manufacturing, design and operation protocols. The challenges perspectives for applications are proposed.

Language: Английский

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High-efficiency overall alkaline seawater splitting: using a nickel–iron sulfide nanosheet array as a bifunctional electrocatalyst

Journal of Materials Chemistry A, Journal Year: 2022, Volume and Issue: 11(3), P. 1116 - 1122

Published: Dec. 22, 2022

NiFeS nanosheet array on Ni foam (NiFeS/NF) behaves as a superb bifunctional electrocatalyst for overall seawater splitting, attaining commercially demanded current density of 500 mA cm −2 at low cell voltage 1.85 V with robust stability.

Language: Английский

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Multidiscipline Applications of Triboelectric Nanogenerators for the Intelligent Era of Internet of Things

Nano-Micro Letters, Journal Year: 2022, Volume and Issue: 15(1)

Published: Dec. 20, 2022

In the era of 5G and Internet things (IoTs), various human-computer interaction systems based on integration triboelectric nanogenerators (TENGs) IoTs technologies demonstrate feasibility sustainable self-powered functional systems. The rapid development intelligent applications TENGs mainly relies supplying harvested mechanical energy from surroundings implementing active sensing, which have greatly changed way human production daily life. This review introduced TENG in multidiscipline scenarios IoTs, including smart agriculture, industry, city, emergency monitoring, machine learning-assisted artificial intelligence applications. challenges future research directions toward also been proposed. extensive developments will push forward into an autonomy fashion.

Language: Английский

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State-of-the-art hydrogen generation techniques and storage methods: A critical review

Journal of Energy Storage, Journal Year: 2023, Volume and Issue: 64, P. 107196 - 107196

Published: March 27, 2023

Language: Английский

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Nano-metal diborides-supported anode catalyst with strongly coupled TaOx/IrO2 catalytic layer for low-iridium-loading proton exchange membrane electrolyzer

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Aug. 23, 2023

The sluggish kinetics of oxygen evolution reaction (OER) and high iridium loading in catalyst coated membrane (CCM) are the key challenges for practical proton exchange water electrolyzer (PEMWE). Herein, we demonstrate high-surface-area nano-metal diborides as promising supports iridium-based OER nanocatalysts realizing efficient, low-iridium-loading PEMWE. Nano-metal prepared by a novel disulphide-to-diboride transition route, which entropy contribution to Gibbs free energy generation gaseous sulfur-containing products plays crucial role. diborides, TaB2 particular, investigated support IrO2 nanocatalysts, finally forms TaOx/IrO2 heterojunction catalytic layer on surface. Multiple advantageous properties achieved simultaneously resulting composite material (denoted IrO2@TaB2), including electrical conductivity, improved mass activity enhanced corrosion resistance. As consequence, IrO2@TaB2 can be used fabricate electrode with low 0.15 mg cm-2, give an excellent performance (3.06 A [email protected] V@80 oC) PEMWE-the one that is usually inaccessible unsupported Ir-based vast majority existing supported catalysts at such loading.

Language: Английский

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Key Components and Design Strategy for a Proton Exchange Membrane Water Electrolyzer

Small Structures, Journal Year: 2022, Volume and Issue: 4(6)

Published: Oct. 27, 2022

As the most attractive energy carrier, hydrogen production through electrochemical water splitting (EWS) is promising for resolving serious environmental problems derived from rapid consumption of fossil fuels globally. The proton exchange membrane electrolyzer (PEMWE) one EWS technologies and has achieved great advancements. To offer a timely reference progress PEMWE system, latest advancements developments technology are systematically reviewed. key components, including electrocatalysts, PEM, porous transport layer (PTL) as well bipolar plate (BPP), first introduced discussed, followed by electrode assembly cell design. highlights put on design electrocatalyst relationship each component performance PEMWE. Moreover, current challenges future perspectives development also discussed. There hope that this review can provide directions in perspectives.

Language: Английский

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Advances in the Electrocatalytic Hydrogen Evolution Reaction by Metal Nanoclusters‐based Materials

Small, Journal Year: 2022, Volume and Issue: 18(52)

Published: Oct. 26, 2022

Abstract With the development of renewable energy systems, clean hydrogen is burgeoning as an optimal alternative to fossil fuels, in which its application promising retarding global and environmental crisis. The evolution reaction (HER), capable producing high‐purity rapidly electrocatalytic water splitting, has received much attention. Abundant research about HER been done, focusing on advanced electrocatalyst design with high efficiency robust stability. As potential catalysts, metal nanoclusters (MNCs) have studied extensively. They are composed several a hundred atoms, sizes being comparable Fermi wavelength electrons, that is, < 2.0 nm. Different from atoms/nanoparticles, they exhibit unique catalytic properties due their quantum size effect low‐coordination environment. In this review, activity‐enhancing approaches MNCs applied electrocatalysis mainly summarized. Furthermore, recent progress classified different stabilization strategies, freestanding MNCs, organic, carbon supports, introduced. Finally, current challenges deficiencies these for prospected.

Language: Английский

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RuO₂ nanoparticle-decorated TiO₂ nanobelt array as a highly efficient electrocatalyst for the hydrogen evolution reaction at all pH values

Inorganic Chemistry Frontiers, Journal Year: 2022, Volume and Issue: 9(24), P. 6602 - 6607

Published: Jan. 1, 2022

RuO 2 nanoparticles decorated TiO nanobelt on titanium plate is active for electrocatalytic hydrogen evolution, requiring overpotentials of 130, 143, and 380 mV to drive 100 mA cm −2 in 0.5 M H SO 4 , 1.0 KOH, PBS solution, respectively.

Language: Английский

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Design Principles of Single‐Atom Catalysts for Oxygen Evolution Reaction: From Targeted Structures to Active Sites

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(7)

Published: Sept. 14, 2023

Hydrogen production from electrolytic water electrolysis is considered a viable method for hydrogen with significant social value due to its clean and pollution-free nature, high efficiency, purity, but the anode oxygen evolution reaction (OER) process complex kinetically slow. Single-atom catalysts (SACs) 100% atom utilization homogeneous active sites often exhibit catalytic activity are expected be extensively applied. The performance of OER can further improved by precise regulation structure through electronic effects, coordination environment, heteroatomic doping, so on. In this review, mechanisms under different conditions introduced, latest research progress SACs in field systematically summarized, then effects various structural strategies on discussed, principles ideas design proposed. end, outstanding issues current challenges summarized.

Language: Английский

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Atomically Local Electric Field Induced Interface Water Reorientation for Alkaline Hydrogen Evolution Reaction

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(26)

Published: March 8, 2023

The slow water dissociation process in alkaline electrolyte severely limits the kinetics of HER. orientation H2 O is well known to affect process, but hard control because its random distribution. Herein, an atomically asymmetric local electric field was designed by IrRu dizygotic single-atom sites (IrRu DSACs) tune adsorption configuration and orientation, thus optimizing process. intensity DSACs over 4.00×1010 N/C. ab initio molecular dynamics simulations combined with situ Raman spectroscopy analysis on behavior show that M-H bond length (M=active site) shortened at interface due strong gradient optimized promotes interfacial water. This work provides a new way explore role single atomic hydrogen evolution reaction.

Language: Английский

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