テキサスホールデム戦略

International Affairs Students Current Students Alumni Faculty/Staff Careers--> TOHOKU UNIVERSITYCREATING GLOBAL EXCELLENCE Search 日本語 Contact Tohoku University --> About Facts & Figures Facilities Organization Chart History President's Message Top Global University Project Designated National University Global Network Promotional Videos Academics Undergraduate Graduate Courses in English Exchange Programs Summer Programs Double Degree Programs Academic Calendar Syllabus Admissions Undergraduate Admissions Graduate Admissions Fees and Expenses Financial Aid Research Feature Highlights Research Releases University Research News Research Institutes Visitor Research Center Research Profiles Academic Research Staff Campus Life International Support Office IT Services Facilities Dining & Shops Campus Bus Clubs & Circles News University News Research--> Arts & Culture Health & Sports Campus & Community Press Release--> International Visit Alumni Careers Events Exhibits Music Special Event Lecture Alumni--> Map & Directions Campus Maps & Bus--> Facilities Map--> TOHOKUUNIVERSITY About Academics Admissions Research Campus Life News Events International Affairs Students Current Students Alumni Faculty/Staff Promotional Videos Subscribe to our Newsletter Map & Directions Contact Jobs & Vacancies Emergency Information Site Map 日本語 Close Home Research News Researchers Develop Framework to Guide Electrolyte Design for Advanced Batteries Research News Researchers Develop Framework to Guide Electrolyte Design for Advanced Batteries 2023-08-24 From cellphones to electric vehicles to microgrids, the future is battery powered. The current go-to lithium-ion batteries, however, require hard-to-find, expensive materials, and their liquid electrolytes can make for a volatile product. Solid-state batteries are a safer option that can hold even more energy, but effectively harnessing their structure-performance relationship has remained a complex barrier to better batteries. Now, however, researchers at Tohoku University's Advanced Institute for Materials Research (WPI-AIMR) and Institute for Materials Research in Japan have developed a framework to predict how the structure of solid-state electrolytes can affect the performance of a battery. They published their findings on July 26 in Chemistry of Materials, a journal of the American Chemical Society. CTCH structure search based on a genetic algorithm method. ©Hao Li et al. Experimental and simulated cation diffusion barriers of MB12H12·12H2O (M = Mg/Zn) closo-type materials. ©Hao Li et al. Correlation analyses between the diffusion activation energies of CTCHs and various descriptors. ©Hao Li et al. "Developing promising energy storage devices is critical to realize a sustainable future," said co-corresponding author Hao Li, associate professor at WPI-AIMR. "Over the past few decades, many attempts to find 'beyond lithium' battery electrolytes have been reported, and, in particular, divalent closo-type complex hydride (CTCH) electrolytes are valuable alternatives to overcome the safety and energy density limitations of lithium-ion technology." A typical battery consists of oppositely charged metal electrodes in a liquid electrolyte. Lithium ions diffuse the positively charged electrode and attach to carbon on the negatively charged electron. The process reverses when energy is used. CTCH electrolytes, according to the researchers, can accelerate the rate at which positive ions diffuse during the process. This increased conductivity is achieved by adding neutral molecules to the CTCH's structural lattice. "Neutral molecule-containing CTCHs are a class of promising but highly complicated materials," said co-corresponding author Shin-ichi Orimo, professor and director of WPI-AIMR. "The key determinants of their performance as battery electrolytes and their structure-performance relationships have been a big mystery that hampered the exploration of the ionic diffusion mechanism and the design of high-performance batteries." To address this challenge, the researchers -- a collaboration between the laboratories of Li and Orimo -- combined a genetic algorithm, which imitates the process of natural selection to refine a population's subjects, with computational modeling of how energy functions within a system. With this framework, the researchers found they could predict how adding neutral molecules to a CTCH would affect its performance. Without using any experimental information to set the parameters, the team used this strategy to successfully predict both structural information and diffusion activation energies. Their predictions compared nearly identically with experimental observations. "Based on these results, we developed robust structure-performance relationships that can precisely predict the divalent CTCH performance and identify the key factors that affect ionic conductivity," Li said. "This study paves a new avenue for building a precise structure-performance picture of complex materials starting from near-zero information." Next, the researchers said they plan to design and screen high-performance and cost-effective electrolytes, as well as apply the framework to better understand other classes of solid-state electrolytes. Publication Details: Title: Explore the Ionic Conductivity Trends on B12H12 Divalent Closo-Type Complex Hydride ElectrolytesAuthors: Egon Campos dos Santos, Ryuhei Sato, Kazuaki Kisu, Kartik Sau, Xue Jia, Fangling Yang, Shin-ichi Orimo, and Hao LiJournal: Chemistry of MaterialsDOI: 10.1021/acs.chemmater.3c00975 Contact: Name: Hao LiAffiliation: Advanced Institute for Materials Research (WPI-AIMR), Tohoku UniversityEmail: li.hao.b8tohoku.ac.jpWebsite: https://www.li-lab-cat-design.com/ Archives 2014&＃24180; 2015&＃24180; 2016&＃24180; 2017&＃24180; 2018&＃24180; 2019&＃24180; 2020&＃24180; 2021&＃24180; 2022&＃24180; 2023&＃24180; Page Top About Tohoku University Academics Admissions Research Campus Life News Events International Affairs Students Alumni Promotional Videos Subscribe to our Newsletter Map & Directions Contact Tohoku University Jobs & Vacancies Emergency Information Site Map Media Enquiries Parent & Family Support Public Facilities Contact Tohoku University