Teaching Electrochemical Energy Conversion and Storage through Active Learning: Insights from Science Workshops DOI
Raúl A. Márquez, Emma Kalokowski, Michael Espinosa

et al.

Journal of Chemical Education, Journal Year: 2024, Volume and Issue: 101(8), P. 3333 - 3343

Published: Aug. 1, 2024

Electrochemical energy conversion and storage devices are pivotal in transforming our society advancing sustainability. Therefore, educating students electrochemistry, the fundamental backbone of these technologies, is essential for preparing a new generation professionals raising public awareness role technologies mitigating environmental challenges. However, critical challenge lies teaching electrochemistry through captivating interactive approaches, particularly younger learners. Herein, we outline week-long workshop designed to immerse high school undergraduate world electrochemical storage. The was meticulously crafted ensure comprehensive exploration fundamentals, operational principles devices, real-world applications, their societal impacts. Through mini-lectures, demonstrations, class discussions, educational games, collaborative projects based on active learning, this aims improve students' understanding promote an appreciation its society. Course evaluations indicate that approach cultivates stimulating learning environment. This initiative serves as model future programs aiming equip with knowledge inspiration needed contribute sustainable future.

Language: Английский

Transforming Adsorbate Surface Dynamics in Aqueous Electrocatalysis: Pathways to Unconstrained Performance DOI Open Access
Viet‐Hung Do, Jong‐Min Lee

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

Abstract Developing highly efficient catalysts to accelerate sluggish electrode reactions is critical for the deployment of sustainable aqueous electrochemical technologies, yet remains a great challenge. Rationally integrating functional components tailor surface adsorption behaviors and adsorbate dynamics would divert reaction pathways alleviate energy barriers, eliminating conventional thermodynamic constraints ultimately optimizing flow within systems. This approach has, therefore, garnered significant interest, presenting substantial potential developing that simultaneously enhance activity, selectivity, stability. The immense promise rapid evolution this design strategy, however, do not overshadow challenges ambiguities persist, impeding realization breakthroughs in electrocatalyst development. review explores latest insights into principles guiding catalytic surfaces enable favorable contexts hydrogen oxygen electrochemistry. Innovative approaches tailoring adsorbate‐surface interactions are discussed, delving underlying govern these dynamics. Additionally, perspectives on prevailing presented future research directions proposed. By evaluating core identifying gaps, seeks inspire rational design, discovery novel mechanisms concepts, ultimately, advance large‐scale implementation electroconversion technologies.

Language: Английский

Citations

3
Regulation of d‐Band Center of Ruthenium Sites via Electronic Complementary Effect of C60 Fullerene Molecules and Manganese Atoms for Efficient Alkaline Hydrogen Evolution DOI
Qi Huang, Wenhao Yang, Yingying Yan

et al.

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

Published: July 7, 2024

Abstract Developing advanced electrocatalysts is crucial for alkaline hydrogen evolution reaction (HER). A balance in adsorption energy each intermediate on the catalyst determines overall catalytic rate. This closely linked to d‐band center, which is, turn, controlled by electronic structure of active sites. Herein, C 60 molecules with electron‐withdrawing properties and manganese (Mn) atoms electron‐donating drive charge redistribution Ru sites are strategically utilized. The synergistic complementary effects Mn regulate centers an optimal position, optimizing both water desorption synthesized catalysts. constructed MnRu/C ‐3 exhibits a low overpotential 8 mV at 10 mA cm −2 , large TOF value 15.5 s −1 high mass activity 2.39 mg 100 1.0 m KOH. anion exchange membrane electrolyzer, assembled as cathode, demonstrates excellent electrolysis performance stability under industrial operational conditions. work offers fresh perspective design principles manipulating using two components.

Language: Английский

Citations

6
Recent Advances in Revealing the Electrocatalytic Mechanism for Hydrogen Energy Conversion System DOI

Mingxin Cai,

Yiran Zhang,

Peilei He

et al.

Small, Journal Year: 2024, Volume and Issue: 20(45)

Published: July 29, 2024

In light of the intensifying global energy crisis and mounting demand for environmental protection, it is vital importance to develop advanced hydrogen conversion systems. Electrolysis cells production fuel cell devices utilization are indispensable in conversion. As one electrolysis cells, water splitting involves two electrochemical reactions, evolution reaction oxygen reaction. And reduction coupled with oxidation reaction, represent core electrocatalytic reactions devices. However, inherent complexity lack a clear understanding structure-performance relationship these have posed significant challenges advancement research this field. work, recent development revealing mechanism systems reviewed, including situ characterization theoretical calculation. First, working principles applications operando measurements unveiling systematically introduced. Then application calculations design catalysts investigation discussed. Furthermore, opportunities also summarized discussed paving

Language: Английский

Citations

5
Oxygen Defect Site Filling Strategy Induced Moderate Enrichment of Reactants for Efficient Electrocatalytic Biomass Upgrading DOI Creative Commons

Baixue Cheng,

Haoyu Zhan,

Yankun Lu

et al.

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

Published: Nov. 4, 2024

Abstract The electrocatalytic oxidation of 5‐hydroxymethylfurfural (HMF) provides a feasible approach for the efficient utilization biomass. Defect regulation is an effective strategy in field biomass upgrading to enhance adsorption capacity reactants and thus increase activity. However, how select appropriate strategies regulate over‐enrichment induced by excessive oxygen vacancy still huge challenge. In this work, defect‐filling design construct element‐filled site layered double hydroxide (S─Ov─LDH) adopted, which achieves significant reduction electrolysis potential platform molecule HMF reaction current density. Physical characterizations, electrochemical measurements, theoretical calculations prove that formation metal─S bond second shell effectively regulates electronic structure material, weakening over‐strong OH − vacancy, promoting high‐valence Co 3+ during reaction, forming new sites. This work discusses catalytic enhancement mechanism defect filling detail, fills gap upgrading, favorable guidance further development strategies.

Language: Английский

Citations

5
Correlating Substrate Reactivity at Electrified Interfaces with the Electrolyte Structure in Synthetically Relevant Organic Solvent/Water Mixtures DOI
Florian Dorchies, Alessandra Serva,

Astrid Sidos

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(25), P. 17495 - 17507

Published: June 11, 2024

Optimizing electrosynthetic reactions requires fine tuning of a vast chemical space, including charge transfer at electrocatalyst/electrode surfaces, engineering mass transport limitations, and complex interactions reactants products with their environment. Hybrid electrolytes, in which supporting salt ions substrates are dissolved binary mixture organic solvent water, represent new piece this puzzle as they offer unique opportunity to harness water the oxygen or proton source electrosynthesis. In work, we demonstrate that modulating water–organic drastically impacts solvation properties hybrid electrolytes. Combining various spectroscopies synchrotron small-angle X-ray scattering (SAXS) force field-based molecular dynamics (MD) simulations, show size composition aqueous domains forming electrolytes can be controlled. We is more reactive for hydrogen evolution reaction (HER) than when strongly interacting molecules, originates from change kinetics rather thermodynamic effect. exemplify novel opportunities arising knowledge optimizing For proceeding first via activation potentially selectivity reaction. Instead, reacting prior have no impact on kinetics, while may affected. believe such comprehension transposed numerous reactions.

Language: Английский

Citations

4
Understanding the interplay between electrocatalytic C(sp3)‒C(sp3) fragmentation and oxygenation reactions DOI
Christine Lucky, Shengli Jiang, C. N. Shih

et al.

Nature Catalysis, Journal Year: 2024, Volume and Issue: 7(9), P. 1021 - 1031

Published: Aug. 29, 2024

Language: Английский

Citations

4
Surface coverage and reconstruction analyses bridge the correlation between structure and activity for electrocatalysis DOI Creative Commons
Zhongyuan Guo, Tianyi Wang, Jiang Xu

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Electrocatalysis is key to realizing a sustainable future for our society. However, the complex interface between electrocatalysts and electrolytes presents an ongoing challenge in electrocatalysis, hindering accurate identification of effective/authentic structure-activity relationships determination favourable reaction mechanisms. Surface coverage reconstruction analyses are important address each conjecture and/or conflicting viewpoint on surface-active phases their corresponding electrocatalytic origin,

Language: Английский

Citations

4
Regulating sulfonic acid group adsorption for enhanced oxygen reduction reaction activity at Pt(111)-Nafion DOI
Haowen Cui, Yanxia Chen

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 643, P. 237083 - 237083

Published: April 16, 2025

Language: Английский

Citations

0
Tailoring the oxidation of benzyl alcohol and its derivatives with (photo)electrocatalysis DOI Creative Commons
Jingjing Qiu,

Tucker Forbes,

Timothy Lin

et al.

Chemical Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The electrochemical oxidation of benzyl alcohol and its derivatives has gained significance as a key anode reaction, offering an alternative to the oxygen evolution reaction (OER) for hydrogen (H 2 ) production carbon dioxide (CO reduction.

Language: Английский

Citations

0
Tracking Local pH Dynamics during Water Electrolysis via In-Line Continuous Flow Raman Spectroscopy DOI
Raúl A. Márquez, Jay T. Bender, Shashwati C. da Cunha

et al.

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 2075 - 2083

Published: April 3, 2025

Language: Английский

Citations

0