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A comprehensive review on the resynthesis of ternary cathode active materials from the leachate of Li-ion batteries

Journal of Energy Chemistry 2024年第8期95卷 446-463,I0010页

作者： Dongwoo Kim Hyeoncheol Joo Chanmin Kim Seoa Kim Wan-Yi Kim Sangwoo Han Joongkil park Soyeon park Heechul Jung sanghyuk park Kyungjung Kwon Department of Energy and Mineral Resources Engineering Sejong UniversitySeoul 05006Republic of Korea LIB Recycling Research Group LIB Materials R&D CenterPOSCO HoldingsPohang 37859Republic of Korea Department of Future Energy Convergence Seoul National University of Science&Technology232 Gongreung-roNowon-guSeoul 01811Republic of Korea Autonomous Intelligent Unmanned Flying Vehicles Institute Sejong UniversitySeoul 05006Republic of Korea

This review highlights the importance of recovering valuable metals from spent Li-ion battery(LIB)cathodes through the resynthesis of cathode active materials(CAMs).The resynthesis process of CAMs,a promising recycling method that directly produces CAM precursors from LIB leachate,is *** process encompasses six key steps,including pretreatment,leaching,purification,adjustment of metal concentrations,precursor synthesis,and *** review also investigates the potential introduction of impurity elements during CAM resynthesis and provides tolerance levels for these impurities based on thorough reference ***,it addresses challenges related to the commercialization of the resynthesis ***,this review represents the first comprehensive assessment of CAM resynthesis,including the systematic evaluation of 12 impurity elements(Fe,Li,Al,Cu,C,P,F,Na,Cl,S,Mg,and Zn).Overall,this comprehensive review is poised to support the commercial development of resynthesized CAMs by offering valuable guidelines for managing impurities and streamlining the purification process.

关键词： Li-ion battery Recycling Resynthesis Leachate Impurity

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On-skin ultrathin and stretchable multifunctional sensor for smart healthcare wearables

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npj Flexible Electronics 2022年第1期6卷 71-82页

作者： Shipeng Zhang Ashok Chhetry MdAbu Zahed Sudeep Sharma Chani park sanghyuk Yoon Jae Y.park Department of Electronic Engineering Kwangwoon University447-1 Wolgye-dongNowon-guSeoul 01897Republic of Korea

The flexible and stretchable multifunctional sensors for the precise monitoring of the human physiological health indicators is an emerging requirement of next-generation ***,the integration of multifunctional sensors into a common substrate for simultaneous detection of such signals without interfering with each other is the most challenging ***,we propose MXene-Ti_(3)C_(2)T_(x) and 3,4-ethylene dioxythiophene(EDOT)deposited on laser-induced graphene(LIG/MXene-Ti_(3)C_(2)T_(x)@EDOT)composite-based flexible and stretchable multifunctional sensors for strain,temperature,and electrocardiogram(ECG)***-situ electrophoretic deposition(EPD)of MXene-Ti_(3)C_(2)T_(x)@EDOT composite into LIG outperforms high strain sensitivity of 2,075,temperature coefficient of resistance(TCR)of 0.86%,and low skin-contact *** sensor platform is integrated into an ultrathin and highly resilient polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene(SEBS).Finally,we demonstrate onsite detection of human body-induced deformations and physiological health indicators,such as temperature and *** proposed approach paves a promising route to future wearables for smart skin and healthcare applications.

关键词： smart wear stretch

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Dipole-assisted carrier transport in bis(trifluoromethane) sulfonamide-treated O-ReS_(2) field-effect transistor

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Nano Research 2021年第7期14卷 2207-2214页

作者： Jae Young park sanghyuk Yoo Byeongho park Taekyeong Kim Young Tea Chun Jong Min Kim Keonwook Kang Soo Hyun Lee Seong Chan Jun Department of Mechanical Engineering Yonsei UniversitySeoul 03722Republic of Korea Center for Biomicrosystem Brain Science InstituteKorea Institute of Science and TechnologySeoul 02792Republic of Korea Sensor System Research Center Korea Institute of Science and TechnologySeoul 02792Republic of Korea Department of Physics Hankuk University of Foreign StudiesYongin 17035Republic of Korea Division of Electronics and Electrical Information Engineering Korea Maritime and Ocean UniversityBusan 49112Republic of Korea Electrical Engineering Division Engineering Department University of CambridgeCambridgeCB3 OFAUK

We demonstrate the dipole-assisted carrier transport properties of bis(trifluoromethane)sulfonamide(TFSI)-treated O-ReS_(2) field-effect *** ReS_(2) was compared with defect-mediated ReS_(2) to confirm whether the presence of defects on the interface enhances the interaction between O-ReS_(2) and TFSI *** to the experiment,density functional theory(DFT)calculation was performed,and the result indicated that the charge transfer between TFSI and O-ReS_(2) is more sensitive to external electric fields than that between TFSI and pristine ReS_(2).After TFSI treatment,the drain current of O-ReS_(2) FET was significantly increased up to 1,113.4 times except in the range of−0.32–0.76 V owing to Schottky barrier modulation from dipole polarization of TFSI molecules,contrary to a significant degradation in device performance in pristine ReS_(2) ***,in the treated O-ReS_(2) device,the dipole direction was highly influenced by the voltage sweep direction,generating a significant area of hysteresis in I–V and transfer characteristics,which was further verified by the surface potential ***,the dipole state was enhanced according to the wavelength of the light source and *** results indicate that TFSI-treated ReS_(2) FET has large potential for use as next-generation memristor,memory,and photodetector.

关键词： Two-dimensional material ReS_(2) field-effect transistor TFSI superacid dipole

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