International Journal of Hydrogen Energy, Год журнала: 2021, Номер 46(43), С. 22268 - 22276
Опубликована: Май 8, 2021
Язык: Английский
Advanced Materials, Год журнала: 2022, Номер 34(16)
Опубликована: Фев. 12, 2022
Electrolysis of costless and infinite seawater is a promising way toward grid-scale hydrogen production without causing freshwater stress. Practical potential this technology, however, hindered by low energy efficiency anode corrosion the detrimental chlorine chemistry in addition to unaffordable electricity expense. Herein, energy-saving reported chlorine-free splitting coupling sulfion oxidation. It yields at cell voltage 0.97 V, cutting consumption 2.32 kWh per m3 H2 300 mA cm-2 . Compared alkaline water electrolysis, expense primarily saved 60% with 50% lower equivalent input. Benefiting from ultralow voltage, hazardous fully avoided regardless Cl- crossover. Meanwhile, it also allows fast degradation S2- pollutant body value-added sulfur 80% efficiency, for further reducing cost protection ecosystem. Connecting such hybrid electrolyzer commercial solar can harvest better sustainability. This work may offer new opportunities low-cost unlimited ocean resources environmental protection.
Язык: Английский
Процитировано
210
Advanced Materials, Год журнала: 2022, Номер 35(6)
Опубликована: Ноя. 21, 2022
The regulation of atomic and electronic structures active sites plays an important role in the rational design oxygen evolution reaction (OER) catalysts toward electrocatalytic hydrogen generation. However, precise identification for surface reconstruction behavior during OER remains elusive water-alkali electrolysis. Herein, irreversible accompanied by copper dynamic cobalt iron layered double hydroxide (CoFe LDH) precatalyst to form CoFeCuOOH species with high-valent Co is reported, identifying origin reconstructed through operando UV-Visible (UV-vis), situ Raman, X-ray absorption fine-structure (XAFS) spectroscopies. Density functional theory analysis rationalizes this typical structure causing transfer intramolecular electrons ligand holes, promoting sites. Specifically, unambiguous explored 18 O isotope-labeling differential electrochemical mass spectrometry (DEMS) supported theoretical calculation, confirming mechanism switch oxygen-vacancy-site (OVSM) pathway on lattice oxygen. This work enables elucidate vital active-site generation representative contribution OVSM efficient performance.
Язык: Английский
Процитировано
190
Inorganic Chemistry Frontiers, Год журнала: 2021, Номер 8(12), С. 3007 - 3011
Опубликована: Янв. 1, 2021
Ni-MOF(bpdc) nanosheet array on nickel foam (Ni-MOF/NF) is a superior OER catalyst with requirement of an overpotential 350 mV to attain 20 mA cm−2 in 1.0 M KOH.
Язык: Английский
Процитировано
167
Trends in Food Science & Technology, Год журнала: 2021, Номер 118, С. 569 - 588
Опубликована: Окт. 28, 2021
Язык: Английский
Процитировано
167
Advanced Energy Materials, Год журнала: 2022, Номер 12(25)
Опубликована: Май 20, 2022
Abstract Exploring advanced technologies to efficiently produce green hydrogen energy is imperative alleviate the crisis and environmental pollution. Conventional overall water electrolysis (OWE) has been regarded as a promising approach for effective H 2 production, however, it largely restricted by sluggish kinetics of anodic oxygen evolution reaction (OER). Coupling kinetically favorable reactions, such biomass‐derived compound oxidation pollutant degradation, with (HER) in hybrid (HWE), can not only solve biomass recycling emission problems but also save cost clean generation. Hence, various earth‐abundant electrocatalysts have developed catalyze those yet some tedious preparation unsatisfactory performance still exist. Given gap between research practical applications, this review summarizes recent progress diverse alternative reactions over last five years together their application HWE systems. An in‐depth understanding different mechanisms assessments toward discussed further enhance efficiency. The advantages, differences, critical issues systems are thoroughly well, providing new avenue low‐voltage production from renewable resources waste products.
Язык: Английский
Процитировано
161
Advanced Energy Materials, Год журнала: 2022, Номер 12(45)
Опубликована: Сен. 30, 2022
Abstract The rational design and development of highly efficient oxygen evolution reaction (OER) electrocatalysts is vital for the application renewable energy devices. Recently, strategy defect engineering draws much attention due to its positive effect on regulating electronic structure, thus, promoting electrocatalytic performance various materials. In this review, main focus cation vacancy defects transition metal‐based electrocatalysts; latest progress in OER summarized. different effects are well discussed together with mechanism, mainly including improving conductivity, optimizing adsorption key intermediates, guiding surface reconstruction form active species, enhancing long‐term stability. Then, methods construct characterization vacancies systematically introduced. Finally, remaining challenges future prospects further proposed.
Язык: Английский
Процитировано
161
Nano-Micro Letters, Год журнала: 2023, Номер 15(1)
Опубликована: Фев. 16, 2023
The electrocatalytic water splitting technology can generate high-purity hydrogen without emitting carbon dioxide, which is in favor of relieving environmental pollution and energy crisis achieving neutrality. Electrocatalysts effectively reduce the reaction barrier increase efficiency. Facet engineering considered as a promising strategy controlling ratio desired crystal planes on surface. Owing to anisotropy, with different orientations usually feature facet-dependent physical chemical properties, leading differences adsorption energies oxygen or intermediates, thus exhibit varied activity toward evolution (HER) (OER). In this review, brief introduction basic concepts, fundamental understanding mechanisms well key evaluating parameters for both HER OER are provided. formation facets comprehensively overviewed aiming give scientific theory guides realize dominant planes. Subsequently, three strategies selective capping agent, etching coordination modulation tune summarized. Then, we present an overview significant contributions facet-engineered catalysts HER, OER, overall splitting. particular, highlight that density functional calculations play indispensable role unveiling structure–activity correlation between plane catalytic activity. Finally, remaining challenges provided future prospects designing advanced electrocatalysts discussed.
Язык: Английский
Процитировано
157
Chem, Год журнала: 2023, Номер 9(7), С. 1882 - 1896
Опубликована: Апрель 6, 2023
Язык: Английский
Процитировано
157
Advanced Energy and Sustainability Research, Год журнала: 2021, Номер 2(8)
Опубликована: Март 14, 2021
Metal–organic frameworks (MOFs), constructed from metal clusters/ions and organic ligands, are ideal materials for photo/electrocatalysis, mainly due to the advantages of large surface areas, high porosity, easily tunable optical electronic structures. Herein, recent important advances on MOF‐based photo/electrocatalysts including pristine MOFs, MOF composites, derivatives summarized. The novel strategies improve photo/electrocatalytic performances highlighted. Finally, current challenges future development MOFs photo/electrocatalysis discussed ad outlined.
Язык: Английский
Процитировано
155
Advanced Materials, Год журнала: 2023, Номер 35(39)
Опубликована: Янв. 14, 2023
Abstract The energy efficiency of metal–air batteries and water‐splitting techniques is severely constrained by multiple electronic transfers in the heterogenous oxygen evolution reaction (OER), high overpotential induced sluggish kinetics has become an uppermost scientific challenge. Numerous attempts are devoted to enabling activity, selectivity, stability via tailoring surface physicochemical properties nanocatalysts. Lattice‐strain engineering as a cutting‐edge method for tuning geometric configuration metal sites plays pivotal role regulating interaction catalytic surfaces with adsorbate molecules. By defining d‐band center descriptor structure–activity relationship, individual contribution strain effects within state‐of‐the‐art electrocatalysts can be systematically elucidated OER optimization mechanism. In this review, fundamentals advancements strain‐catalysts showcased innovative trigger strategies enumerated, particular emphasis on feedback mechanism between precise regulation lattice‐strain optimal activity. Subsequently, modulation various attributes categorized impediments encountered practicalization strained effect discussed, ending outlook future research directions burgeoning field.
Язык: Английский
Процитировано
148