Water electrolysis for hydrogen production: from hybrid systems to self-powered/catalyzed devices

Energy & Environmental Science, Год журнала: 2023, Номер 17(1), С. 49 - 113

Опубликована: Ноя. 7, 2023

This perspective highlights recent advancements in innovative strategies to provide valuable insights into the potential for energy-saving hydrogen production through water electrolysis.

Язык: Английский

---

Recent Advancements in Electrochemical Hydrogen Production via Hybrid Water Splitting

Advanced Materials, Год журнала: 2023, Номер 36(4)

Опубликована: Окт. 10, 2023

Abstract As one of the most promising approaches to producing high‐purity hydrogen (H 2 ), electrochemical water splitting powered by renewable energy sources such as solar, wind, and hydroelectric power has attracted considerable interest over past decade. However, electrolysis process is seriously hampered sluggish electrode reaction kinetics, especially four‐electron oxygen evolution at anode side, which induces a high overpotential. Currently, emerging hybrid strategy proposed integrating thermodynamically favorable electro–oxidation reactions with cathode, providing new opportunity for energy–efficient H2 production. To achieve highly efficient cost–effective toward large–scale practical H production, much work been continuously done exploit alternative anodic oxidation cutting–edge electrocatalysts. This review will focus on recent developments production coupled reactions, including choice substrates, investigation electrocatalytic materials, deep understanding underlying mechanisms. Finally, some insights into scientific challenges now standing in way future advancement technique are shared, hope inspiring further innovative efforts this rapidly growing field.

Язык: Английский

---

Scalable electrosynthesis of commodity chemicals from biomass by suppressing non-Faradaic transformations

Nature Communications, Год журнала: 2023, Номер 14(1)

Опубликована: Сен. 12, 2023

Electrooxidation of biomass platforms provides a sustainable route to produce valuable oxygenates, but the practical implementation is hampered by severe carbon loss stemming from inherent instability substrates and/or intermediates in alkaline electrolyte, especially under high concentration. Herein, based on understanding non-Faradaic degradation, we develop single-pass continuous flow reactor (SPCFR) system with ratio electrode-area/electrolyte-volume, short duration time reactor, and separate feeding substrate solution, thus largely suppressing degradation. By constructing nine-stacked-modules SPCFR system, achieve electrooxidation glucose-to-formate 5-hydroxymethylfurfural (HMF)-to-2,5-furandicarboxylic acid (FDCA) conversion efficiency (SPCE; 81.8% 95.8%, respectively) selectivity (formate: 76.5%, FDCA: 96.9%) at concentrations 562.8 mM, 556.9 mM). Furthermore, demonstrate kilogram-scale electrosynthesis potassium diformate (0.7 kg) wood soybean oil, FDCA (1.17 HMF. This work highlights importance providing opportunities for scalable upgrading using electrochemical technology.

Язык: Английский

---

Electrocatalytic upcycling of polyethylene terephthalate plastic to formic acid coupled with energy-saving hydrogen production over hierarchical Pd-doped NiTe nanoarrays

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 340, С. 123236 - 123236

Опубликована: Авг. 28, 2023

Язык: Английский

---

Bio-based hyperbranched epoxy resins: synthesis and recycling

Chemical Society Reviews, Год журнала: 2023, Номер 53(2), С. 624 - 655

Опубликована: Дек. 18, 2023

This review provides a comprehensive overview of the synthesis, degradation, and recycling bio-based hyperbranched epoxy resins.

Язык: Английский

---

Pulse potential mediated selectivity for the electrocatalytic oxidation of glycerol to glyceric acid

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Март 18, 2024

Abstract Preventing the deactivation of noble metal-based catalysts due to self-oxidation and poisonous adsorption is a significant challenge in organic electro-oxidation. In this study, we employ pulsed potential electrolysis strategy for selective electrocatalytic oxidation glycerol glyceric acid over Pt-based catalyst. situ Fourier-transform infrared spectroscopy, quasi-in X-ray photoelectron finite element simulations reveal that could tailor catalyst’s surface micro-environment. This prevents overaccumulation poisoning intermediate species frees up active sites re-adsorption OH adsorbate glycerol. The results higher selectivity (81.8%) than constant-potential electrocatalysis with 0.7 V RHE (37.8%). work offers an efficient mitigate electrocatalysts.

Язык: Английский

---

Electrochemical Production of Glycolate Fuelled By Polyethylene Terephthalate Plastics with Improved Techno‐Economics

Small, Год журнала: 2023, Номер 19(39)

Опубликована: Май 25, 2023

Electrochemical valorization of polyethylene terephthalate (PET) waste streams into commodity chemicals offers a potentially sustainable route for creating circular plastic economy. However, PET wastes upcycling valuable C2 product remains huge challenge by the lack an electrocatalyst that can steer oxidation economically and selectively. Here, it is reported catalyst comprising Pt nanoparticles hybridized with γ-NiOOH nanosheets supported on Ni foam (Pt/γ-NiOOH/NF) favors electrochemical transformation real-word hydrolysate glycolate high Faradaic efficiency (> 90%) selectivity across wide reactant (ethylene glycol, EG) concentration ranges under marginal applied voltage 0.55 V, which be paired cathodic hydrogen production. Computational studies combined experimental characterizations elucidate Pt/γ-NiOOH interface substantial charge accumulation gives rise to optimized adsorption energy EG decreased barrier potential determining step. A techno-economic analysis demonstrates that, nearly same amount resource investment, electroreforming strategy towards production raise revenue up 2.2 times relative conventional chemical process. This work may thus serve as framework process net-zero carbon footprint economic viability.

Язык: Английский

---

Electrochemical Co-Production of Ammonia and Biodegradable Polymer Monomer Glycolic Acid via the Co-Electrolysis of Nitrate Wastewater and Waste Plastic

ACS Catalysis, Год журнала: 2023, Номер 13(15), С. 10394 - 10404

Опубликована: Июль 25, 2023

Electrochemical reformation of nitrate wastewater and poly(ethylene terephthalate) (PET) plastic waste into ammonia (NH3) fine chemicals is a sustainable strategy for resource utilization. Herein, co-production system glycolic acid (GA, degradable polymer monomer) constructed by coupling reduction ethylene glycol (EG, in PET hydrolysate) oxidation. Low-crystalline CoOOH (LC-CoOOH/CF) Pd nanothorns (Pd NTs/NF) grown situ on the metal foam substrates are employed as cathode anode, respectively. The high density amorphous regions LC-CoOOH/CF enables enhanced adsorption provides abundant active sites, ultimately leading to an Faradic efficiency (FE) 97.38 ± 1.0% at −0.25 V vs reversible hydrogen electrode (RHE). Meanwhile, unique nanothorn morphology endows NTs/NF with high-curvature tip, triggering tip effect (TE) promote highly selective oxidation EG GA. Furthermore, two-electrode system, NH3 GA operated low energy consumption (onset voltage: 0.5 V), much lower than traditional electrolysis process (1.4 V). This study method utilization co-produce value-added chemicals.

Язык: Английский

---

Pd/NiMoO4/NF electrocatalysts for the efficient and ultra-stable synthesis and electrolyte-assisted extraction of glycolate

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Апрель 4, 2024

Abstract Electrocatalytic conversion of organic small molecules is a promising technique for value-added chemical productions but suffers from high precious metal consumption, poor stability electrocatalysts and tedious product separation. Here, Pd/NiMoO 4 /NF electrocatalyst with much lowered Pd loading amount (3.5 wt.%) has been developed efficient, economic, ultra-stable glycolate synthesis, which shows Faradaic efficiency (98.9%), yield (98.8%), ultrahigh (1500 h) towards electrocatalytic ethylene glycol oxidation. Moreover, the obtained glycolic acid converted to sodium by in-situ acid-base reaction in NaOH electrolyte, atomic efficient needs no additional addition weak adsorption on catalyst surface plays significant role avoiding excessive oxidation achieving selectivity. This work may provide instructions design as well separation conversions alcohols.

Язык: Английский

---

Upcycling of Plastic Waste Using Photo-, Electro-, and Photoelectrocatalytic Approaches: A Way toward Circular Economy

ACS Catalysis, Год журнала: 2024, Номер 14(7), С. 4865 - 4926

Опубликована: Март 18, 2024

Rapid industrialization and development have led to a tremendous increase in the use of various types plastic commodities daily life. For past several years, pollution has become global issue, posing serious threat mankind. The primary issue with increasing is lack proper management which created huge havoc environment. From initial phase waste management, been discarded, recycled, downcycled, or dumped into landfills large proportion, causing extreme damage ecosystem. Conventionally, treated via thermal processes such as pyrolysis incineration plants require amount capital and, therefore, harms aim circular economy. Chemical upcycling gaining attention high-potential catalytic strategy convert plastics, polyethylene terephthalate, polyethylene, polystyrene, etc. fuels, functionalized polymers, other value-added chemicals having direct impact on affordability viability. In this review, we focused photocatalysis, electrocatalysis, photoelectrocatalysis effective efficient technologies. These approaches can lower dependence nonrenewable resources are more environmentally friendly contrast conventional approaches. This review elaborately discusses pros cons provides detailed overview potential renewable energy-driven for conversion wastes valuable fuels commodity chemicals, along challenges future directions emerging approach treatment.

Язык: Английский

---