Опубликована: Янв. 1, 2024
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Язык: Английский
Energy & Environmental Science, Год журнала: 2024, Номер 17(18), С. 6594 - 6605
Опубликована: Янв. 1, 2024
Strong transboundary electron transfer in high-entropy quantum-dots significantly accelerates the Tafel kinetics HER, which effectively reduces cost of cathode catalyst proton exchange membrane water electrolysis (PEMWE).
Язык: Английский
Процитировано
11
Journal of the American Chemical Society, Год журнала: 2025, Номер unknown
Опубликована: Март 4, 2025
The polymetallic alloy nanostructure has received widespread attention in electrocatalytic reactions due to the variability composition and excellent performance. However, controllable synthesis of one-dimensional (1D) nanomaterials remains a significant challenge. Herein, we propose new general low-temperature method prepare library binary septenary nanotubes, this can be used synthesize 18 kinds nanotube (NT), including eight high-entropy (HEA) NT. A representative Cu30Ni26Co19Ru14Ir11 HEA NT demonstrates efficient stable catalytic performance for both oxygen evolution reaction (OER) hydrogen (HER). exhibits an overpotential only 121 mV HER 272 OER, respectively, when measured at current density 100 mA cm-2. In addition, two-electrode system comprising impressive efficiency cm-2 during overall water splitting, requiring potential 1.67 V. high activity is attributed downward shift d-band center. HER, center reduce binding energy with *H, which beneficial desorption process hydrogen. also barrier associated rate-determining step from *O *OOH. This work seeks offer synthesizing nanotubes structures compositions under mild conditions.
Язык: Английский
Процитировано
1
Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161519 - 161519
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
1
Small Methods, Год журнала: 2024, Номер unknown
Опубликована: Сен. 17, 2024
Abstract Green hydrogen (H 2 ) is an essential component of global plans to reduce carbon emissions from hard‐to‐abate industries and heavy transport. However, challenges remain in the highly efficient H production water electrolysis powered by renewable energies. The sluggish oxygen evolution restrains splitting. Rational electrocatalyst designs for are pivotal electrolysis. With development high‐performance electrolyzers, scale‐up industrial‐level related activity can be achieved. This review summarizes recent advances such as proton exchange membrane electrolyzer (PEMWE) anion (AEMWE). critical PEMWE AEMWE high cost noble‐metal catalysts their durability, respectively. highlights anode cathode improving catalytic performance electrocatalysts, electrolyte engineering electrode assembly (MEA) optimizations, stack systems most promising electrolyzers Besides, advantages integrating fuel cells (FC), regenerative (RFC) into ecosystem introduced. Finally, perspective with superior presented.
Язык: Английский
Процитировано
5
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Март 3, 2025
Abstract Wearable sensors hold significant promise for continuous, real‐time, and non‐invasive analysis in biofluids. However, current wearable sensor technologies suffer from low accuracy detecting trace analytes, inevitable signal distortion due to deformation, inadequate biofluid replenishment. Herein, a electrochemical is developed by integrating designed metal‐organic frameworks (MOFs) modified graphene fiber (GF) microelectrode into flexible microfluidic chip. The proposed atomically precise phthalocyanine‐based MOFs, with high‐density dual‐redox sites intrinsic conductivity, ensure highly sensitive selective detection of the metabolite uric acid (UA) tyrosine (Tyr) freestanding, functionalized GF assembled nanosheets. Therefore, it exhibits excellent mechanical flexibility, large surface area, high temporal/spatial resolution. This contributes robust bio‐interface adaptable various skin areas improves vivo detection. Consequently, high‐performance sensing system based on dual‐redox‐sites integrated chip efficient collection rapid replenishment raw biofluids, results practical real‐time monitoring UA Tyr sweat saliva, which are utilized gout management tracking levels patients healthy controls during purine‐rich dietary challenge.
Язык: Английский
Процитировано
0
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Май 9, 2025
Abstract Utilizing dual active sites in electrocatalysts creates a synergistic effect, enabling the independent optimization of H 2 O dissociation and intermediate adsorption/desorption, which turn enhances efficiency hydrogen evolution reaction (HER). Herein, porous NiW bimetallic alloy electrocatalyst using dynamic bubble template (DHBT) strategy is fabricated. This capitalizes on effect sites, achieving industrial‐level current densities 500 1000 mA cm −2 for HER 1.0 M KOH, with low overpotentials 198 264 mV, respectively. It also demonstrates excellent stability over 200 h test. Theoretical studies reveal that alloying Ni W shifts d‐band center ( ε d ) 5d orbital downward, *OH desorption promotes adsorption at site, leading to increased site availability. Meanwhile, this shift provides more accessible H* intermediates, further enhancing production 1 hollow site. When implemented solar‐driven water splitting system, it achieves high solar‐to‐hydrogen (STH) conversion 16.59%. work underscores effectiveness sustainable production.
Язык: Английский
Процитировано
0
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Май 30, 2025
Abstract Integrating renewable electricity and concentrated CO 2 from direct air capture, electrochemical reduction reactions (eCO RR) offer a promising pathway for converting into fuel chemicals, enabling the closure of carbon loop in sustainable manner. The clean H produced via hydrogen evolution reaction (HER) during water electrolysis can replace traditional fossil fuels without additional emissions. Achieving large‐scale high‐efficiency eCO RR HER requires development rational electrolyzer designs, which are crucial industrial implementation. This review examines recent innovations system designs RR, HER, latest advances situ cell operando characterization reactions. It focuses on improvements flow patterns, membrane electrode assemblies, electrolyte engineering to maximize catalytic activities at level. Besides, discusses optimizing counter‐anodic improve energy efficiency electrolysis, offering insights design systems with efficient utilization. Furthermore, it explores integration other (e.g., cells), highlighting their potential role decarbonization future processes. Finally, summary, challenge, outlook industrial‐scale concluded.
Язык: Английский
Процитировано
0
Journal of Colloid and Interface Science, Год журнала: 2024, Номер 683, С. 312 - 321
Опубликована: Дек. 12, 2024
Язык: Английский
Процитировано
3
Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер unknown, С. 124638 - 124638
Опубликована: Сен. 1, 2024
Язык: Английский
Процитировано
1
Опубликована: Янв. 1, 2024
Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI
Язык: Английский
Процитировано
0