Spin Manipulation of Co sites in Co9S8/Nb2CTx Mott–Schottky Heterojunction for Boosting the Electrocatalytic Nitrogen Reduction Reaction DOI Creative Commons
Shuai Zhang,

Weihua Zhao,

Jiameng Liu

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 3, 2024

Abstract Regulating the adsorption of an intermediate on electrocatalyst by manipulating electron spin state transition metal is great significance for promoting activation inert nitrogen molecules (N 2 ) during electrocatalytic reduction reaction (eNRR). However, achieving this remains challenging. Herein, a novel 2D/2D Mott–Schottky heterojunction, Co 9 S 8 /Nb CT x ‐P, developed as eNRR catalyst. This achieved through in situ growth cobalt sulfide (Co nanosheets over Nb MXene using solution plasma modification method. Transformation from low (t 2g 6 e g 1 to high 5 adjusting interface electronic structure and sulfur vacancy ‐P. The ability N optimized Co(II) with more unpaired electrons, significantly accelerating *N →*NNH kinetic process. ‐P exhibits NH 3 yield 62.62 µg h −1 mg cat. Faradaic efficiency (FE) 30.33% at −0.40 V versus reversible hydrogen electrode (RHE) 0.1 m HCl. Additionally, it achieves 41.47 FE 23.19% −0.60 RHE Na SO 4 . work demonstrates promising strategy constructing heterojunction electrocatalysts efficient eNRR.

Language: Английский

Advanced electrocatalysts with unusual active sites for electrochemical water splitting DOI Creative Commons
Hainan Sun, Xiaomin Xu, Hyunseung Kim

et al.

InfoMat, Journal Year: 2023, Volume and Issue: 6(1)

Published: Nov. 27, 2023

Abstract Electrochemical water splitting represents a promising technology for green hydrogen production. To design advanced electrocatalysts, it is crucial to identify their active sites and interpret the relationship between structures performance. Materials extensively studied as electrocatalysts include noble‐metal‐based (e.g., Ru, Ir, Pt) non‐noble‐metal‐based 3d transition metals) compounds. Recently, advancements in characterization techniques theoretical calculations have revealed novel unusual sites. The present review highlights latest achievements discovery identification of various unconventional electrochemical splitting, with focus on state‐of‐the‐art strategies determining true establishing structure–activity relationships. Furthermore, we discuss remaining challenges future perspectives development next‐generation By presenting fresh perspective reaction involved this aims provide valuable guidance study industrial applications. image

Language: Английский

Citations

98
Ambient Electrosynthesis toward Single‐Atom Sites for Electrocatalytic Green Hydrogen Cycling DOI
Xin Zhao, Daping He, Bao Yu Xia

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(14)

Published: Feb. 17, 2023

With the ultimate atomic utilization, well-defined configuration of active sites and unique electronic properties, catalysts with single-atom (SASs) exhibit appealing performance for electrocatalytic green hydrogen generation from water splitting further utilization via hydrogen-oxygen fuel cells, such that a vast majority synthetic strategies toward SAS-based (SASCs) are exploited. In particular, room-temperature electrosynthesis under atmospheric pressure offers novel, safe, effective route to access SASs. Herein, recent progress in ambient SASs sustainable future opportunities discussed. A systematic summary is started on three kinds electrochemically routes SASs, including electrochemical etching (ECE), direct electrodeposition (DED), leaching-redeposition (ELR), associated advanced characterization techniques. Next, their applications energy conversion evolution reaction, oxygen overall splitting, reduction reaction reviewed. Finally, brief conclusion remarks challenges regarding development high-performance cost-effective SASCs many other presented.

Language: Английский

Citations

71
Catalytic efficiency of LDH@carbonaceous hybrid nanocomposites towards water splitting mechanism: Impact of plasma and its significance on HER and OER activity DOI
Rakesh Kulkarni, Lakshmi Prasanna Lingamdinne, Rama Rao Karri

et al.

Coordination Chemistry Reviews, Journal Year: 2023, Volume and Issue: 497, P. 215460 - 215460

Published: Sept. 25, 2023

Language: Английский

Citations

56
Nanomaterials: paving the way for the hydrogen energy frontier DOI Creative Commons

Lina M. Shaker,

Ahmed A. Al‐Amiery, Waleed Khalid Al‐Azzawi

et al.

Discover Nano, Journal Year: 2024, Volume and Issue: 19(1)

Published: Jan. 3, 2024

Abstract This comprehensive review explores the transformative role of nanomaterials in advancing frontier hydrogen energy, specifically realms storage, production, and transport. Focusing on key like metallic nanoparticles, metal–organic frameworks, carbon nanotubes, graphene, article delves into their unique properties. It scrutinizes application elucidating both challenges advantages. The meticulously evaluates diverse strategies employed to overcome limitations traditional storage methods highlights recent breakthroughs nanomaterial-centric storage. Additionally, investigates utilization enhance emphasizing as efficient nanocatalysts boosting fuel cell efficiency. provides a overview various potential applications cells. exploration extends realm transport delivery, tanks pipelines, offering insights investigated for this purpose advancements field. In conclusion, underscores immense propelling energy frontier. emphasizes imperative continued research aimed at optimizing properties performance existing while advocating development novel with superior attributes serves roadmap, shedding light pivotal can play clean sustainable technologies.

Language: Английский

Citations

25
Polyolefin‐Based Separator with Interfacial Chemistry Regulation for Robust Potassium Metal Batteries DOI

Long Tu,

Zhijia Zhang,

Zelin Zhao

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(35)

Published: July 4, 2023

Abstract Potassium metal batteries (KMBs) are ideal choices for high energy density storage system owing to the low electrochemical potential and cost of K. However, practical KMB applications suffer from intrinsically active K anode, which would bring serious safety concerns due easier generation dendrites. Herein, explore a facile approach tackle this issue, we propose regulate plating/stripping via interfacial chemistry engineering commercial polyolefin‐based separator using multiple functional units integrated in tailored organic framework. As case study, MIL‐101(Cr) offer elastic modulus, facilitate dissociation potassium salt, improve + transfer number homogenize flux at electrode/electrolyte interface. Benefiting these favorable features, uniform stable is realized with regulated separator. Full battery assembled showed ∼19.9 % higher discharge capacity than that glass fiber 20 mA g −1 much better cycling stability rates. The generality our validated KMBs different cathodes electrolytes. We envision strategy suppress dendrite formation by surface tailor‐designed can be extended other metal/metal ion batteries.

Language: Английский

Citations

33
Tailoring hybrid CrCoSb-B nano-needles via Ar plasma: A path to sustainable water splitting and urea oxidation DOI
Rakesh Kulkarni, Lakshmi Prasanna Lingamdinne,

Zulfqar Ali Sheikh

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 486, P. 150352 - 150352

Published: March 13, 2024

Language: Английский

Citations

15
Carbon Fiber Film with Multi‐Hollow Channels to Expedite Oxygen Electrocatalytic Reaction Kinetics for Flexible Zn–Air Battery DOI
Tingzhen Li, Yijun Liu,

Yongfa Huang

et al.

Small, Journal Year: 2024, Volume and Issue: 20(31)

Published: March 5, 2024

Abstract The high oxygen electrocatalytic overpotential of flexible cathodes due to sluggish reaction kinetics result in low energy conversion efficiency wearable zinc–air batteries (ZABs). Herein, lignin, as a 3D carbon‐rich macromolecule, is employed for partial replacement polyacrylonitrile and constructing freestanding air electrodes (FFAEs) with large amount mesopores multi‐hollow channels via electrospinning combined annealing strategy. presence lignin disordered structure decreases the graphitization carbon fibers, increases structural defects, optimizes pore structure, facilitating enhancement electron‐transfer kinetics. This unique effectively improves accessibility graphitic‐N/pyridinic‐N reduction (ORR) activity pyridinic‐N evolution (OER) FFAEs, accelerating mass transfer process oxygen‐active species. resulting N‐doped hollow fiber films (NHCFs) exhibit superior bifunctional ORR/OER performance potential difference only 0.60 V. rechargeable ZABs NHCFs metal‐free possess long‐term cycling stability. Furthermore, can be used FFAEs which have specific capacity good stability under different bending states. work paves way design produce highly active electrochemical devices.

Language: Английский

Citations

12
Plasma treatment of electrodeposited Sb2Se3 thin films for improvement of solar-driven hydrogen evolution reaction DOI
Magno Barcelos Costa, Moisés A. de Araújo, Robert Paiva

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 485, P. 149526 - 149526

Published: Feb. 20, 2024

Language: Английский

Citations

9
Defect Engineering To Tailor Metal Vacancies in 2D Conductive Metal–Organic Frameworks: An Example in Electrochemical Sensing DOI

Yang Luo,

Yinghong Wu, Artur Braun

et al.

ACS Nano, Journal Year: 2022, Volume and Issue: 16(12), P. 20820 - 20830

Published: Nov. 29, 2022

Two-dimensional conductive metal–organic frameworks (2D MOFs) with π–d conjugations exhibit high electrical conductivity and diverse coordination structures, making them constitute a desirable platform for new electronic devices. Defects are inevitable in the self-assembly process of 2D MOFs. Arguably, defect engineering that deliberately manipulates defects demonstrates great potential to enhance electrocatalytic activity this family novel materials. Herein, facile universal strategy is proposed demonstrated metal vacancy regulation benzenehexathiolato (BHT) polymer films. Controllable vacancies can be produced by simply tuning proton concentration during confined at liquid–liquid interface. This but design has been proven effective class materials including Cu-BHT, Ni-BHT, Ag-BHT physicochemical regulation. To further demonstrate feasibility practicality electrochemical applications, elaborately fabricated Cu-BHT films abundant Cu deliver competitive performance sensing H2O2. Mechanistic analysis revealed act as active sites adsorption reduction H2O2, tuned structure boosts reaction. The developed advanced confirms excellent commercial sensors findings provide insights into molecular conducting MOFs sensors.

Language: Английский

Citations

35
Excellent catalytic performance toward the hydrogen evolution reaction in topological semimetals DOI Creative Commons
Lirong Wang, Ying Yang, Jianhua Wang

et al.

EcoMat, Journal Year: 2022, Volume and Issue: 5(4)

Published: Dec. 7, 2022

Abstract Topological states of matter and their corresponding properties are classical research topics in condensed physics. Quite recently, the application materials that feature these has been extended to field electrochemical catalysis become an emerging topic is receiving increasing interest. In particular, several recent experimental studies performed on topological semimetals have already revealed high catalytic performance toward hydrogen evolution reaction (HER), strongly promoting acceptance fresh concept catalyst. This experienced rapid developments last few years, but rarely summarized. Herein, we offer a comprehensive review state‐of‐the‐art progress developing catalysts for HER process through such as Weyl semimetals, Dirac nodal line so on. The course development, general routes, fundamental mechanisms also systematically analyzed this review. image

Language: Английский

Citations

31