Flash Joule heating for synthesis, upcycling and remediation

Published: Jan. 15, 2025

Language: Английский

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Insights into the pH effect on hydrogen electrocatalysis

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

This review systematically provides various insights into the pH effect on hydrogen electrocatalysis, and thus providing a reference for future development of electrocatalysis based these insights.

Language: Английский

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N-doped carbonized lignin for electrocatalysts in seawater batteries

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 505, P. 159219 - 159219

Published: Jan. 5, 2025

Language: Английский

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Enhanced oxygen evolution reaction through improved lattice oxygen activity via carbon dots incorporation into MOFs

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 685, P. 361 - 370

Published: Jan. 19, 2025

Language: Английский

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Nonmetallic High‐Entropy‐Engineered Nanocarbons for Advanced ORR Electrocatalysis

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

High-entropy materials are poised to revolutionize science and industrial applications due their design flexibility, peculiar performance, broad applicability. In this study, we present a proof-of-concept high-entropy engineered nanocarbon (HENC) co-doped with five nonmetal elements (B, F, P, S, N), synthesized via in situ polymerization modification of ZIF-8 followed by pyrolysis. The HENC exhibits outstanding performance as electrocatalyst for the oxygen reduction reaction (ORR), activity on par benchmark Pt/C electrocatalysts superior cyclic stability. Simulations all-site calculations reveal that synergistic effects abundant heteroatoms increased system entropy facilitate formation *O2 species, N, S acting key active elements, while co-doping B F further enhances Notably, HENCs have been validated cathode catalysts zinc-air batteries, achieving an impressive peak power density 604 mW cm-2 demonstrating long-term stability over 16-day period, outpacing commercial catalyst (542 cm-2). This work not only enriches concept high advances understanding but also opens new avenue development high-performance low-cost catalysts.

Language: Английский

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Nonmetallic High‐Entropy‐Engineered Nanocarbons for Advanced ORR Electrocatalysis

Angewandte Chemie, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

Abstract High‐entropy materials are poised to revolutionize science and industrial applications due their design flexibility, peculiar performance, broad applicability. In this study, we present a proof‐of‐concept high‐entropy engineered nanocarbon (HENC) co‐doped with five nonmetal elements (B, F, P, S, N), synthesized via in situ polymerization modification of ZIF‐8 followed by pyrolysis. The HENC exhibits outstanding performance as electrocatalyst for the oxygen reduction reaction (ORR), activity on par benchmark Pt/C electrocatalysts superior cyclic stability. Simulations all‐site calculations reveal that synergistic effects abundant heteroatoms increased system entropy facilitate formation *O 2 species, N, S acting key active elements, while co‐doping B F further enhances Notably, HENCs have been validated cathode catalysts zinc–air batteries, achieving an impressive peak power density 604 mW cm −2 demonstrating long‐term stability over 16‐day period, outpacing commercial catalyst (542 ). This work not only enriches concept high advances understanding but also opens new avenue development high‐performance low‐cost catalysts.

Language: Английский

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Nano‐High Entropy Materials in Electrocatalysis

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 19, 2024

Abstract High entropy materials (HEMs) compositing of at least five elements have gained widespread attention in the field electrocatalysis due to their tunable activities and high stability. These intrinsic properties can be further highlighted when size HEMs comes nanoscale. In nanostructured HEMs, fascinating including large composition space, multi‐element synergy, configuration are expected endow nano‐HEMs with excellent catalytic activity stability, thus providing greater potential for design advanced electrocatalysts. this review, differentiated detail dimensions common synthesis methods summarized. Additionally, from perspective complex nanostructure‐performance relationship, applications systems, water‐splitting (hydrogen evolution reaction (HER), oxygen (OER)), hydrogen oxidation (HOR), reduction (ORR), carbon dioxide (CO 2 RR), nitrogen (NRR) alcohol (AOR) discussed. Finally, main challenges faced by underscored. This review is provide more insights into understanding developing efficient electrocatalytic practical applications.

Language: Английский

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High-Entropy Electrode Materials: Synthesis, Properties and Outlook

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)

Published: Sept. 27, 2024

Abstract High-entropy materials represent a new category of high-performance materials, first proposed in 2004 and extensively investigated by researchers over the past two decades. The definition high-entropy has continuously evolved. In last ten years, discovery an increasing number led to significant advancements their utilization energy storage, electrocatalysis, related domains, accompanied rise techniques for fabricating electrode materials. Recently, research emphasis shifted from solely improving performance toward exploring reaction mechanisms adopting cleaner preparation approaches. However, current remains relatively vague, method is based on single metal/low- or medium-entropy It should be noted that not all methods applicable can directly applied this review, development are briefly reviewed. Subsequently, classification presented, followed discussion applications storage catalysis perspective synthesis methods. Finally, evaluation advantages disadvantages various production process different provided, along with proposal potential future directions

Language: Английский

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Tailoring Coordination Fields of Asymmetric MO₅S₁‐Type Metal–Organic Frameworks Catalysts for Accelerated Oxygen Evolution Reaction

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 27, 2024

Abstract Asymmetric coordination has emerged as a promising approach to enhance the oxygen evolution reaction (OER) activity, yet achieving controlled synthesis of asymmetric structures comprehensively understand structure‐activity relationship remains challenging. In this study, facile and effective symmetry‐breaking strategy is reported for tailoring MO 5 S 1 ‐type metal–organic frameworks (MOFs) catalyst, establishing correlation between sulfur (S)‐mediated electron rearrangement adsorption/desorption dynamics oxygen‐related intermediates in OER. Experimental theoretical calculations reveal that well‐designed structure can effectively lower d‐band center, optimizing adsorption behavior OH * significantly decreasing energy barrier rate‐determining step (OH → O ) with enhanced O–H bond cleavage process. The S‐NiFe‐MOF/CFP catalyst demonstrates remarkable OER performance an alkaline electrolyte environment. More importantly, self‐assembled anion exchange membrane water electrolysis cell showcases low voltage 1.84 V deliver current density A cm −2 , maintaining long‐term stability over 100 h. This study unveils precise employing S, highlighting critical role manipulating redistribution through promote catalytic activity develop advanced MOF‐based catalysts.

Language: Английский

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High-entropy heterostructure electrocatalyst with built-in electric field regulation for efficient oxygen evolution reaction

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 162626 - 162626

Published: Feb. 1, 2025

Language: Английский

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