Weihan Li’s Post

I am excited to share another publication from the Dahn-Metzger-Yang group! Our high-temperature Li-ion battery electrolytes might have practical applications in unexpected fields. This paper, published open access in the ECS—The Electrochemical Society, delves into this question. You can find it at https://lnkd.in/e4ReFEqW. We investigated the performance of some high-temperature electrolytes under conditions similar to autoclave sterilization, as medical drills and devices using Li-ion cells undergo unique degradation due to high-temperature exposure. This project was quite challenging but a great learning experience for me. I want to credit Alison Clarke, Jessie Harlow, Sasha Martin Maher, Kenneth Tuul, Ethan Eastwood, Michel Johnson, and J. R. Dahn for their excellent work, without which this wouldn't have been possible. #battery #research #science

Importance of using real driving cycles to assess EV battery lifetime In a new paper by Alexis GESLIN, Le Xu, Devi Ganapathi and Kevin Moy (in partnership with Prof. Simona Onori), we systematically compared the effect of realistic driving against laboratory-based discharge cycles on battery aging, the latter being the industry standard when it comes to materials and cell development for lithium-ion batteries. ✅ "Dynamic discharge" (e.g., pulses, rests, regenerative breaking, etc.) leads to substantially longer cycle life when compared constant current discharge, by as much as 40%, for the same C-rate and charging profile. ✅ Using explainable machine learning, we identified key features of dynamic driving cycles that enhance cycle life. ✅ We recommend battery materials and cell developers to use dynamic discharge profiles to assess new chemistries and designs. ✅ Likewise, academics investigating the fundamentals of battery aging should consider dynamic discharge profile as a key lever for aging (alongside C-rate and temperature). ✅ Two years of battery aging data is available publicly as part of this study. This work was carried out at the SLAC-Stanford Battery Center, a joint center between Stanford University and SLAC National Accelerator Laboratory.

🔋 #BatteryResearch Updates: Researchers at Helmholtz-Zentrum Berlin (#HZB) and Justus Liebig University Giessen have made a breakthrough in understanding how #solidstatebatteries degrade over time. Using hard X-ray photoelectron spectroscopy (HAXPES) at BESSY II, they developed a method to monitor electrochemical reactions at the electrode-electrolyte interface in real time during battery operation. This innovative approach shows that decomposition reactions in Li6PS5Cl, a promising #solidelectrolyte, are only partially reversible. By using an ultra-thin current collector, researchers can now study buried interfaces, providing critical insight into the formation of interphases that hinder #lithiumion transport and reduce #batterycapacity. This work opens the door to improved materials and designs for solid-state batteries, possibly overcoming the limited lifetime issues that currently prevent them from being widely adopted. The technique can be extended to study various #batterymaterials and #electrolytes, opening new possibilities for improving the performance of next-generation #energystorage and #batterytechnologies. Source: https://lnkd.in/e9haGhe6

#analyticalchemistry news In recent years, the fascinating world of #chemistry has been continually unveiling the secrets that could revolutionise our understanding of materials at the nanoscale. A new study published in Analytical Methods reveals the mechanism by which Fe3+ ions influence luminescence quenching in carbon dots. The research team has meticulously examined how iron ions interact with carbon dots, affecting their photo-luminescent properties. Carbon dots, known for their exceptional optical properties and biocompatibility, have a wide array of applications from bioimaging to environmental monitoring. However, understanding factors that can quench their luminescence, such as the presence of Fe3+ ions, is pivotal for enhancing their performance and developing new applications. This study provides critical insights into the ion-induced luminescence quenching mechanism by employing advanced analytical techniques. Through this research, the authors have not only expanded the fundamental knowledge of carbon dot chemistry but also paved the way for the development of better sensors and fluorescent probes, potentially impacting diverse fields like medical diagnostics and environmental analysis. The findings underscore how intricate #chemistry principles can be harnessed to drive innovation and improvements in technology that we regularly interact with. With scientific advances such as these, we are inching closer to more efficient and effective solutions in both healthcare and environmental well-being, showcasing the profound effect #chemistry has on our daily lives. Explore more about this groundbreaking research here: https://lnkd.in/eqqh9QUz #Chemistry #CarbonDots #Luminescence #AnalyticalMethods #Innovation #ScienceForAll, If you want to know more about #analyticalchemistry news, follow me: https://lnkd.in/d29pbjb9

A failed experiment turned into a Nobel-winning discovery, transforming molecular motors into powerful tools in science and medicine. 🔬 What began as a failed attempt to create molecular switches led to the creation of a light-driven motor molecule. 🌟 This motor's key innovation: its ability to perform a full 360-degree rotation by utilizing light and heat. 🚗 Feringa's team later built a "nano car" using four molecular motors, powered by surface-generated electricity. 💊 The original molecular switch concept returned in a breakthrough for light-controlled medications, reducing side effects and environmental harm. ✈️ Feringa likens molecular motors' future impact to the Wright brothers' first airplane—a revolution just beginning. #Innovation #NobelPrize #Nanotechnology ⚙️ The molecular motor's development over 25 years reflects ongoing advances in materials science, catalysis, and drug delivery. 🧪 Research into molecular "handedness" or chirality also holds promise for understanding the origins of life. 🚀 As molecular motors become more efficient, their applications are expanding across diverse industries. https://lnkd.in/gnm3ghZ9

I am thrilled to share that our latest research has been published in the Journal of Energy Storage! 📑🔋 I am incredibly proud of the work we conducted and what we achieved. In this study, we utilized innovative techniques for electrode fabrication (magneto-electrophoretic deposition). Additionally, we introduced novel energy storage concepts through external stimuli forces (Magnetic field) to enhance the specific capacity and commercial feasibility of energy storage devices. These findings demonstrate that using the M-EPD method, the magnetic nanocomposite is uniformly supported on ferromagnetic nickel foam (NF) and shows an impressive specific capacitance. In addition, enhancing pseudo-capacitive behavior illustrated the impact of external magnetic fields on supercapacitor performance. Our work highlights that magneto-electrophoretic deposition (M-EPD) is a robust binder-free strategy. An external magnetic field facilitates ionic and electronic pathways, reduces cell polarization, and lowers internal resistance by thinning the Nernst layer. It also enhances the MHD effect on electrolyte ions and increases the diffusion coefficient. I am expressing my sincere gratitude to Dr. Kheibar Dashtian, Dr. Eskandar Kolvari, and Dr. Nadiya Koukabi for their valuable support and insightful feedback throughout this journey. I invite you all to read our paper and explore the detailed results and implications of our study. Read the full paper here: [https://lnkd.in/d6HjWbNJ] #Battery_Technology; #Electrochemistry; #Material_Science; #Magnetic_field_induced_supercapacitors; #Capacitive; #Ion_diffusion; #Asymmetric_pseudo_supercapacitors; #Innovation; #Magnetic_metal_organic_frameworks;

Editor’s Choice #Review Electrochemical vs. Optical Biosensors for Point-of-Care Applications: A Critical Review by Seyedeh Rojin Shariati Pour, et al. https://lnkd.in/dajgitR6   MDPI University of Bologna (Alma Mater Studiorum – Università di Bologna) #biosensor #electrochemicaldetection #opticaldetection #pointofcare #labonchip #microfluidicdevice #paperbaseddevice

🔬 Breaking Ground in Thermoelectric Research! 🔍 Our recent publication in Physical Review Letters, led by Prof. Steffen Hardt and Dr. Rajkumar Sarma, delves into the thermoelectric response of thermally activated electrolytes (TAEs) within a slit channel. TAEs, whose charge carrier concentration varies with temperature, show intriguing potential for significant thermoelectric effects, particularly impacting nanoporous materials. Discover the intricate details of our research on how electrolytes respond to heat in confined spaces and their potential impact on nanoporous materials. 📢 Featured in Technische Universität Darmstadt News: 🎉https://lnkd.in/eTYAhXsV 🌐 Read the English version: https://lnkd.in/eJ9B73aq 📚 Full Preprint Available: For an in-depth exploration, dive into the complete preprint here: https://lnkd.in/eqKy3ean Join us in unraveling the mysteries of thermoelectricity and its potential applications! 🌟 #ScientificResearch #Thermoelectricity #NanoporousMaterials #AcademicExcellence #TRANSLATEenergy #h2020 #publicationsuccess #sciencenews #energyefficiency #energysector #sustainabilitysolutions

Warsaw PhD School in Natural and BioMedical Sciences and Instytut Wysokich Ciśnień PAN invite you to a SPOTLIGHT TALK "Addressing the Gap Magnet Problem" given by Dr. Andriy Palasyuk (Critical Materials Institute, Ames National Laboratory, USA) on 21st May 2024, 11:00 at the IHPP PAS New Technologies building, al. Prymasa Tysiąclecia 98, seminar room, 2nd floor, or online via Zoom - get the link at [email protected]   All Warsaw-4-Phd students (and others) are very welcome! Abstract: A gap in the market exists between super strong neodymium magnets and less sensitive ferrite magnets. This gap means that compromises are made in engineering items like car sensors or wind turbine rotors. The Critical Materials Institute is working on a cerium-based magnet that will hit the sweet spot between powerful rare earth magnets and the much weaker ferrites. The magnet is process effective and less susceptible to supply chain disruptions. Its unique intra-granular coercivity mechanism does not require complicated microstructure developments and opens potential for advanced manufacturing.

<3 It is a really great pleasure to share our novel Research Article entitled "Nanostructured Cu/Zn/Al-based oxide as a new sensing material for NO2 detection", just published in the prestigious journal Sensors and Actuators B: Chemical of Elsevier!!! This article is the outcome of a fruitful collaboration with the groups coordinated by Profs. Jean-Marc Tulliani and Simelys Hernández at Polytechnic University of Turin, Italy! Enjoy its reading! :) #CuZnAloxide #Pnheterojunction #NO2detection #NH3detection https://lnkd.in/eshdcEv3