Bifunctional BiPd Alloy Particles Anchored on Carbon Matrix for Reversible Zn–CO₂ Battery

ACS Applied Nano Materials, Journal Year: 2022, Volume and Issue: 5(9), P. 12387 - 12394

Published: Sept. 7, 2022

Exploring reversible Zn–CO2 batteries holds great promising potential for future CO2 fixation and energy supply. Herein, the bifunctional PdBi alloy anchoring on carbon substrate (BiPdC) is proposed simultaneously catalyzing dioxide reduction reaction (CO2RR) formic acid oxidation (FAO). The synergistic effect between Pd Bi overcomes sluggish kinetics of CO2RR FAO, causing HCOOH Faraday efficiency (FEHCOOH) 63.4% 6.2 mA cm–2 current density FAO. Benefiting from CO2–HCOOH interconversion, homemade battery exhibits optimal 52.6% FEHCOOH 1.1 V voltage gap within 45 h cycling.

Language: Английский

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Multifunctional Separator Enables High‐Performance Sodium Metal Batteries in Carbonate‐Based Electrolytes

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(5)

Published: Nov. 22, 2023

Abstract Sodium metal has become one of the most promising anodes for next‐generation cheap and high‐energy‐density batteries; however, challenges caused by uncontrollable sodium dendrite growth fragile solid electrolyte interphase (SEI) restrict their large‐scale practical applications in low‐cost wide‐voltage‐window carbonate electrolytes. Herein, a novel multifunctional separator with lightweight high thinness is proposed, assembled cobalt‐based metal–organic framework nanowires (Co‐NWS), to replace widely applied thick heavy glass fiber separator. Benefitting from its abundant sodiophilic functional groups densely stacked nanowires, Co‐NWS not only exhibits outstanding wettability effectively induces uniform Na + ion flux as strong redistributor but also favors constructing robust N,F‐rich SEI layer. Satisfactorily, 10 µL electrolyte, Na|Co‐NWS|Cu half‐cell delivers stable cycling (over 260 cycles) average Coulombic efficiency 98%, symmetric cell shows long cycle life more than 500 h. Remarkably, full long‐term span 1500 cycles 92% capacity retention) at current density electrolyte. This work opens up strategy developing dendrite‐free, low‐cost, long‐life‐span batteries carbonate‐based

Language: Английский

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Ionic Liquid‐Assisted Electrocatalytic NO Reduction to NH₃ by P‐Doped MoS₂

ChemCatChem, Journal Year: 2022, Volume and Issue: 15(3)

Published: Dec. 9, 2022

Abstract Ambient NH 3 electrosynthesis from NO reduction reaction (NORR) is attractive in replacing the industrial Haber‐Bosch route; however, competitive hydrogen evolution (HER) aqueous electrolyte typically induces a limited selectivity and activity toward production. Herein, hierarchical P‐doped MoS 2 nanospheres are developed as NORR electrocatalyst an ionic liquid (IL) for catalyzing of to with maximal Faradaic efficiency 69 % (−0.6 V vs RHE) peak yield rate 388.3 μg h −1 mg cat. (−0.7 RHE), both which comparable best‐reported results. Moreover, catalyst also shows stable over 30 6 cycles. Theoretical analyses further reveal that P dopants facilitate activation hydrogenation NO. Besides, employment hydrophobic IL slows down HER kinetics effectively.

Language: Английский

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Amorphous NiB₂for electroreduction of NO to NH₃

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(14), P. 7409 - 7414

Published: Jan. 1, 2023

Amorphous NiB 2 is demonstrated as an efficient metal diboride catalyst for electrochemical NO reduction to NH 3 (NORR), which attributed the active Ni sites accelerate NORR energetics and retard hydrogen evolution.

Language: Английский

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Bimetallic phosphoselenide nanosheets as bifunctional catalysts for 5-hydroxymethylfurfural oxidation and hydrogen evolution

Inorganic Chemistry Frontiers, Journal Year: 2023, Volume and Issue: 10(8), P. 2423 - 2429

Published: Jan. 1, 2023

Here, Mn-doped FePSe 3 nanosheets are developed as an efficient bifunctional electrocatalyst, which shows high activity and good stability toward HMF oxidation hydrogen evolution.

Language: Английский

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