PVT4EU’s Post

Grand Scale Green Hydrogen by Electrolysis Today's horizontally stacked Alkaline Water Electrolyser (AWE) design and electro-chemistry is outdated. It could use a chemical process engineering vertical design upgrade for future lofty green hydrogen production goals. The following paper presents my conceptual idea of a novel Vertical Column Electrolyzer (VCE) consisting of a multitude of vertical Electrolysis Tubes (ETs) incorporating "state-of-the-art" Proton Exchange Membrane (PEM) electro-chemistry. The process design and mechanical configurations are intended as "food-for-thought" to challenge those skilled in the field of green hydrogen production by water electrolysis. Enjoy the read.

Read and download for FREE 👉 https://lnkd.in/dD8R2t7T   📜 Modification of Cu-Based Current Collectors and Their Application in High-Performance Zn Metal Anode: A Review   🔑 #Znmetalanode; #currentcollector (CC); #modification; #Zndeposition; #coulombicefficiency (CE)   🎓 By Xiujie Gao, Fei Wang, Yibo Xing, Chunyang Kong, Yumeng Gao, Zhihui Jia, Guangbin Wang, Yifei Pei and Yong Liu   🏛 Henan University of Science and Technology 🏛 Huanghe Science & Technology University   Zinc-based batteries (ZBBs) have proven to be tremendously plausible for large-scale electrochemical energy storage applications due to their merits of desirable safety, low-cost, and low environmental impact. Nevertheless, the zinc metal anodes in ZBBs still suffer from many issues, including dendrite growth, hydrogen evolution reactions (HERs), corrosion, passivation, and other types of undesirable side reactions, which severely hinder practical application. The modification of Cu-based current collectors (CCs) has proven to be an efficient method to regulate zinc deposition and prevent dendritic growth, thereby improving the Coulombic efficiency (CE) and lifespan of batteries (e.g., up to 99.977% of CE over 6900 cycles after modification), which is an emerging research topic in recent years. In this review, we provide a systematic overview of the modification of copper-based CCs and their application in zinc metal anodes. The relationships between their modification strategies, nano-micro-structures, and electrochemical performance are systematically reviewed. Ultimately, their promising prospects for future development are also proposed. We hope that this review could contribute to the design of copper-based CCs for zinc-based batteries and facilitate their practical application.   #review #article #peerreviewed #openaccess #callforreading #scientificpublishing #mdpi #mdpicoatings

Happy to share our latest work just published in Separation and Purification Technology. "Effect of Li-Na sorbent phase in Ru/Al2O3 Dual Function Materials for the Integrated CO2 Capture and Methanation" Stefano Cimino, Elisabetta Maria Cepollaro, Francesco Frusteri, Luciana Lisi CNR-STEMS, CNR ITAE Available here (open access): https://lnkd.in/d_2Ra69n This work is dedicated to our co-author, friend and colleague Dr. Francesco Frusteri who suddenly passed away on April 2024. We would like to pay a tribute to his remarkable contributions to the heterogeneous catalysis community as a committed researcher and distinguished scientist. To many of us he was a desired companion of scientific and social life of conferences and congresses. The design of highly performing dual functional materials (#DFM) is the key to the successful deployment of Integrated Carbon Capture and Methanation (#ICCM) process that combines both steps into a single unit operation with high energy efficiency. Intending to enhance the CO2 working capacity while preserving high catalytic #methanation activity, herein we set out to investigate the effect of combining Li and Na as the CO2 sorbent phase in Ru/Al2O3 DFMs. ICCM tests in a fixed bed reactor operated with alternate feeds indicated that combining Na with Li effectively increases the CO2 capture capacity and methane production. However, this generally requires higher temperatures to properly activate the catalytic methanation and to regenerate the DFM compared to a pure Li-based formulation. Transient operando #DRIFTS and catalytic kinetic experiments provided mechanistic insights into the activation/inhibition of different reaction paths on those DFMs containing only Li and/or Na.

I am excited to present our paper "Modification of TNF@UiO-66 composite by amine functionalized (TEPA) to improve photoconversion of CO2 using visible light: Investigation of intrinsic kinetic study and optimization" at the Journal of CO2 utilization on July 2024. This paper focused on the 25 % weight percentages of UiO-66 in TiO2 nanoflower composite was treated with varying quantities of Tetraethylenepentamine (TEPA) to improve photoconversion of CO2 into fuel using visible light (VL). The results revealed that maximum production rates of CH4 and CH3OH on TNF@25 %U-TEPA(2) sample were 64.59 and 2.47 µmol gcat−1 h−1, respectively, at the optimum conditions of V-LP=150 W, PCO2 =73 KPa, PH2O =15 KPa and T=332.15 K. 15 LHHW models were evaluated based on different assumptions of rate determining step and the most abundant surface intermediate to obtain kinetics of the CO2 photoconversion. The chosen model was the one that was closest to the experimental data. Furthermore, the kinetic rate and adsorption coefficients at T= 298.15–338.15 K and V-LP=150 W were obtained for the best-selected model. #Supervisors: Mohammadreza Khosravi-Nikou Ahmad Shariati looking forward to connecting and exchanging insights with everyone there. #CO2_photoreduction #photocatalyst #visible_light #nanocomposite #solar_energy #CCS #synthesis #TEPA #Amine_Functionalized #Kinetic_study

Read this highly accessed article for FREE 👉 https://lnkd.in/dQHPptxY 📜 Controllable Crystallization of Perovskite Films during the Blade-Coating Fabrication Process for Efficient and Stable Solar Cells 🔑 #perovskitefilm; #solarcells; #scalablefabrication; #vacuumassisteddeposition; #FAPbI3; #stability 🎓 By Zhaoyi Jiang, Jiaqi Li, Kun Li, Rui Zhang, Zhenxing Qin, Yufei Zhang, Boheng Wu, Qiang Ma, Yulong Zhang and Weijia Zhang 🏛 Taiyuan University of Science & Technology 🏛 Ningxia University 🏛 Officers College of PAP 🏛 Beihang University The scalable production of high-quality perovskite thin films is pivotal for the industrialization of perovskite thin film solar cells. Consequently, the solvent system employed for the fabrication of large-area perovskite films via coating processes has attracted significant attention. In this study, a solvent system utilizing a volatile solvent as the primary reagent has been developed to facilitate the rapid nucleation of volatile compounds. While adding the liquid Lewis base dimethylformamide (DMF) can help to improve the microstructure of perovskite films, its slow volatilization renders the crystal growth process uncontrollable. Based on the solvent system containing DMF and ethanol (EtOH), introducing a small amount of NH4Cl increases the proportion of the intermediate phase in the precursor films. This not only results in a controllable growth process for the perovskite crystals but also contributes to the improvement of the film microstructure. Under the simulated illumination (AM1.5, 1000 W/m2), the photoelectric conversion efficiency (PCE) of the inverted solar cells has been improved to 20.12%. Furthermore, after 500 hours of continuous illumination, the photovoltaic device can retain 95.6 % of the initial, indicating that the solvent system is suitable for the scalable fabrication of high-quality FAPbI3 thin films. #article #peerreviewed #openaccess #callforreading #openaccessjournal #scientificpublishing #mdpi #mdpicoatings

Molecule-triggered strain regulation strategy for efficient inverted perovskite solar cells. Researchers have addressed the issue of residual tensile strain - which impedes the improvement of efficiency and intrinsic stability of perovskite solar cells (PSCs) (resulting from the perovskite lattice distortion and different thermal expansion coefficients). To this end, they proposed a molecule-triggered strain regulation and interfacial passivation strategy to enhance the efficiency and stability (especially photostability) of PSCs. https://lnkd.in/dq3cpHGM #perovskite #perovskitesolarcells Chinese Academy of Sciences Beijing Institute of Technology

🚀 Excited to Share Our Latest Research Paper! 📝 Our research paper titled “The Effect of Doping TiO₂ Monolayer with Sn⁺⁴, Pb⁺⁴, and S⁻² Ions on H₂ Production by Photocatalytic Water Splitting: Periodic DFT Modeling” has just been published in the Iranian Journal of Science. 🔍 Key Findings: • Mono-doping with Sn⁺⁴ and Pb⁺⁴, as well as co-doping (Sn⁺⁴-S⁻² and Pb⁺⁴-S⁻²), modifies the band gap energy of the TiO₂ monolayer. • These structural adjustments enhance photocatalytic efficiency, making them promising candidates for hydrogen production. 🌱 Why It Matters: Our findings hold promise for more efficient and sustainable hydrogen production, contributing to the advancement of clean energy technologies. 🔗 Read the full paper here[https://lnkd.in/dTQUXiZE] #Research #CleanEnergy #HydrogenProduction #Photocatalysis #DFTModeling #SustainableTechnology

The chemistry of the 21st century will be founded on #synthons derived from #renewable_sources, significantly reducing the reliance on fossil-based starting materials. #5_Hydroxymethylfurfural (#HMF) is often regarded as the #sleeping_giant of #platform_chemicals for #sustainable_chemistry, offering an alternative to petroleum-based resources in #organic_synthesis. I am proud and honored to coordinate the #PRIN_2022 project #Seed4Green, where the versatility of #HMF is explored in combination with the sustainability of #deep_eutectic_solvents (#DES). We have just published one of the first scientific outcomes of this project, where we investigate the liquid state of #HMF for the first time—an essential step in studying its structure and reactivity in DES. This ambitious initiative is a collaborative effort with Politecnico di Milano CMICPolimi and other esteemed partners: Università di Pisa, Scuola Normale Superiore, CNR - ISM Istituto di Struttura della Materia I would like to extend my thanks to all the authors involved, especially the young scientists hired for the project, whose dedication and hard work have been invaluable: Giulia Adriana Bracchini, Emanuela Mangiacapre, Grazia Isa Carla Righetti

Tomorrow, our second FREE webinar will be hosted by Dr. Jason Keonhag Lee from the University of Victoria, Canada.   👉Abstract The widespread adoption of clean hydrogen production requires the large-scale deployment of water electrolyzers, with proton exchange membrane (PEM) water electrolyzers (PEMWE) offering appealing advantages for scale-ups. However, iridium (Ir)-based catalysts are currently the only practical choice for PEMWE, creating a bottleneck due to their low availability for establishing large-scale electrolyzer plants. In this webinar, Dr. Lee introduces high-performance ionomer-free porous transport electrodes (PTEs), showcasing their recyclability of both iridium and the porous transport layer (PTL). The fabrication of the ionomer-free PTEs requires less endeavors than fabrication of conventional PTEs, while demonstrating a voltage reduction of > 600 mV at 1.8 A cm−2 at ultra-low catalyst loading of 0.1 mgIr cm−2. Ionomer-free PTEs enable facile recycling of iridium and porous transport layers, which is beneficial to the scale up of water electrolyzer. Please register here 👉 https://lnkd.in/e4QQQ4Z4 Jason Keonhag Lee Prof. Dr. Bruno G. Pollet Institut de recherche sur l’hydrogène #hydrogen #electrolysers #researchanddevelopment #innovation #HRI #UQTR #HyROC #IAHE #IAHEGH2Division #GH2Lab #uvic

Hot off the press. We are delighted to share our recent article published in the Journal of Materials Chemistry A (JMCA). Materials #RSCMat In this article, we demonstrated a solar energy derived hybrid electrolysis (overall methanol splitting) system using nickel phosphide nanocrystals with some amount of chromium. Our outcomes reveal the change in shape and crystal orientation of nickel phosphide nanocrystals after chromium doping, which favors the thermodynamics of dehydrogenation process in MOR and hydrogen adsorption in HER. Our work opens a new avenues for the design & development of catalysts for energy-efficient electrosynthesis of valuable chemicals coupled with clean hydrogen production. Kudos to our fantastic team Dr. Uma Ghorpade Priyank Kumar Jodie A Y. Mayur Gaikwad Dr. Mahesh Suryawanshi Jin Hyeok Kim You can read the full article for more information here: https://lnkd.in/gNPWaqwM Chonnam National University UNSW UNSW SPREE UNSW Chemical Engineering University of Adelaide #renewableenergy #greenhydrogen #electrolysis #catalysts #pvelectrolysis #solarfuels