Nano Energy, Journal Year: 2020, Volume and Issue: 78, P. 105270 - 105270
Published: Aug. 14, 2020
Language: Английский
Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(11), P. 4583 - 4762
Published: Jan. 1, 2022
Replacing fossil fuels with energy sources and carriers that are sustainable, environmentally benign, affordable is amongst the most pressing challenges for future socio-economic development.
Language: Английский
Citations
1022
ACS Catalysis, Journal Year: 2019, Volume and Issue: 9(11), P. 9973 - 10011
Published: Sept. 25, 2019
As a highly appealing technology for hydrogen generation, water electrolysis including oxygen evolution reaction (OER) at the anode and (HER) cathode largely depends on availability of efficient electrocatalysts. Accordingly, over past years, much effort has been made to develop various electrocatalysts with superior performance reduced cost. Among them, ruthenium (Ru)-based materials OER HER are very promising because their prominent catalytic activity, pH-universal application, cheapest price among precious metal family, so on. Herein, recent advances in this hot research field comprehensively reviewed. A general description about splitting is presented understand mechanism proposed scaling relations toward activities, key stability issues Ru-based further given. Subsequently, Ru-involving introduced classified into different groups improving or optimizing electrocatalytic properties, special focus several significant bifunctional along simulated electrolyzer. Finally, perspective existing challenges future progress catalysts provided. The main aim here shed some light design construction emerging energy storage conversion technologies.
Language: Английский
Citations
640
Advanced Materials, Journal Year: 2020, Volume and Issue: 33(6)
Published: June 24, 2020
Hydrogen has been deemed as an ideal substitute fuel to fossil energy because of its renewability and the highest density among all chemical fuels. One most economical, ecofriendly, high-performance ways hydrogen production is electrochemical water splitting. Recently, 2D transition metal dichalcogenides (also known TMDs) showed their utilization potentiality cost-effective evolution reaction (HER) catalysts in electrolysis. Herein, recent representative research efforts systematic progress made TMDs are reviewed, future opportunities challenges discussed. Furthermore, general methods synthesizing materials introduced detail advantages disadvantages for some specific provided. This explanation includes several important regulation strategies creating more active sites, heteroatoms doping, phase engineering, construction heterostructures, synergistic modulation which capable optimizing electrical conductivity, exposure catalytic barrier electrode material boost HER kinetics. In last section, current obstacles chances development electrocatalysts proposed provide insight into valuable guidelines fabricating effective electrocatalysts.
Language: Английский
Citations
527
Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 60(34), P. 18821 - 18829
Published: June 14, 2021
Abstract The oxygen evolution reaction (OER) is a key for many electrochemical devices. To date, OER electrocatalysts function well in alkaline media, but exhibit poor performances neutral and acidic especially the stability. Herein, sodium‐decorated amorphous/crystalline RuO 2 with rich vacancies (a/c‐RuO ) was developed as pH‐universal electrocatalyst. a/c‐RuO shows remarkable resistance to acid corrosion oxidation during OER, which leads an extremely high catalytic stability, confirmed by negligible overpotential increase after continuously catalyzing 60 h at pH=1. Besides, also exhibits superior activities commercial most reported catalysts under all pH conditions. Theoretical calculations indicated that introduction of Na dopant vacancy weakens adsorption strength intermediates engineering d ‐band center, thereby lowering energy barrier OER.
Language: Английский
Citations
512
Chemical Reviews, Journal Year: 2022, Volume and Issue: 122(13), P. 11830 - 11895
Published: April 20, 2022
This Review provides an overview of the emerging concepts catalysts, membranes, and membrane electrode assemblies (MEAs) for water electrolyzers with anion-exchange membranes (AEMs), also known as zero-gap alkaline electrolyzers. Much recent progress is due to improvements in materials chemistry, MEA designs, optimized operation conditions. Research on polymers (AEPs) has focused cationic head/backbone/side-chain structures key properties such ionic conductivity stability. Several approaches, cross-linking, microphase, organic/inorganic composites, have been proposed improve performance chemical mechanical stability AEMs. Numerous AEMs now exceed values 0.1 S/cm (at 60-80 °C), although specifically at temperatures exceeding 60 °C needs further enhancement. The oxygen evolution reaction (OER) still a limiting factor. An analysis thin-layer OER data suggests that NiFe-type catalysts highest activity. There debate active-site mechanism NiFe their long-term be understood. Addition Co increases these catalysts. same hydrogen (HER) shows carbon-supported Pt dominating, PtNi alloys clusters Ni(OH)
Language: Английский
Citations
475
Journal of Materials Chemistry A, Journal Year: 2021, Volume and Issue: 9(9), P. 5320 - 5363
Published: Jan. 1, 2021
This review summarizes recent advances relating to transition metal sulfide (TMS)-based bifunctional electrocatalysts, providing guidelines for the design and fabrication of TMS-based catalysts practical application in water electrolysis.
Language: Английский
Citations
462
International Journal of Hydrogen Energy, Journal Year: 2021, Volume and Issue: 46(63), P. 32284 - 32317
Published: July 30, 2021
Language: Английский
Citations
438
ACS Catalysis, Journal Year: 2019, Volume and Issue: 10(1), P. 412 - 419
Published: Nov. 26, 2019
Transition-metal phosphides have been shown to be promising electrocatalysts in water for both hydrogen evolution reaction (HER) and oxygen (OER). To maximize reactivity toward entails limiting the catalyst size while maintaining avoiding aggregation. Frame-like hollow nanostructures (nanoframes) provide required open structure with sufficient channels into interior volume. We demonstrate here design synthesis of CoP nanoframes (CoP NFs) by a strategy involving precipitation, chemical etching, low-temperature phosphidation steps. It results impressive bifunctional catalytic activities HER OER consequently enables highly efficient electrolyzer current density 10 mA cm–2 driven cell voltage only 1.65 V. The has generalized preparation nanoframe Co dichalcogenides CoX2 NFs, X = S, Se, Te. electrochemical measurements, supported functional theory calculations, show that series follow sequence: NFs > CoSe2 CoS2 CoTe2 NFs.
Language: Английский
Citations
430
Chemical Society Reviews, Journal Year: 2021, Volume and Issue: 50(17), P. 9817 - 9844
Published: Jan. 1, 2021
This review summarizes the recent progress related to field of doping regulation in transition metal compounds, aiming give an overview this strategy for designing high-performance catalysts towards electrocatalytic applications.
Language: Английский
Citations
428
Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 31(27)
Published: May 5, 2021
Abstract A new type of lanthanum‐based high entropy perovskite oxide (HEPO) electrocatalyst for the oxygen evolution reaction is reported. The B‐site lattices in HEPO consist five consecutive first‐row transition metals, including Cr, Mn, Fe, Co, and Ni. Equimolar non‐equimolar electrocatalysts are studied their OER electrocatalytic performance. In HEPOs, concentration one metals doubled individual samples. performances all HEPOs outperform single oxides. optimized La(CrMnFeCo 2 Ni)O 3 exhibits an outstanding overpotential 325 mV at a current density 10 mA cm −2 excellent electrochemical stability after 50 h testing.
Language: Английский
Citations
405