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Effective Approaches to Preventing Dendrite Growth in Lithium Metal Anodes: A Review
( Jaeyun Ha ),( Jinhee Lee ),( Yong-tae Kim ),( Jinsub Choi ) 한국공업화학회 2023 공업화학 Vol.34 No.4
A lithium metal anode with high energy density has the potential to revolutionize the field of energy storage systems (ESS) and electric vehicles (EVs) that utilize rechargeable lithium-based batteries. However, the formation of lithium dendrites during cycling reduces the performance of the battery while posing a significant safety risk. In this review, we discuss various strategies for achieving dendrite-free lithium metal anodes, including electrode surface modification, the use of electrolyte additives, and the implementation of protective layers. We analyze the advantages and limitations of each strategy, and provide a critical evaluation of the current state of the art. We also highlight the challenges and opportunities for further research and development in this field. This review aims to provide a comprehensive overview of the different approaches to achieving dendrite-free lithium metal anodes, and to guide future research toward the development of safer and more efficient lithium metal anodes.
Kim, Jaeyun,Park, Sungjin,Lee, Ji Eun,Jin, Seung Min,Lee, Jung Hee,Lee, In Su,Yang, Ilseung,Kim, Jun-Sung,Kim, Seong Keun,Cho, Myung-Haing,Hyeon, Taeghwan WILEY-VCH Verlag 2006 Angewandte Chemie Vol.45 No.46
<B>Graphic Abstract</B> <P>Targeting cancer: Multifunctional magnetic gold nanoshells (Mag-GNS) are prepared by coating silica spheres with gold nanoshells embedded with Fe<SUB>3</SUB>O<SUB>4</SUB> nanoparticles. The Fe<SUB>3</SUB>O<SUB>4</SUB> nanoparticles allow magnetic resonance imaging (MRI) for diagnosis, and the gold nanoshells enable photothermal therapy. By attaching an antibody to the Mag-GNS by a poly(ethylene glycol) (PEG) linker, cancer cells can be targeted. <img src='wiley_img/14337851-2006-45-46-ANIE200602471-content.gif' alt='wiley_img/14337851-2006-45-46-ANIE200602471-content'> </P>
Multifunctional Silver-Embedded Magnetic Nanoparticles as SERS Nanoprobes and Their Applications
Jun, Bong-Hyun,Noh, Mi Suk,Kim, Jaeyun,Kim, Gunsung,Kang, Homan,Kim, Min-Soo,Seo, Young-Tae,Baek, Jongho,Kim, Jong-Ho,Park, Juyoung,Kim, Seongyong,Kim, Yong-Kweon,Hyeon, Taeghwan,Cho, Myung-Haing,Jeon WILEY-VCH Verlag 2010 Small Vol.6 No.1
<P>In this study, surface-enhanced Raman spectroscopy (SERS)-encoded magnetic nanoparticles (NPs) are prepared and utilized as a multifunctional tagging material for cancer-cell targeting and separation. First, silver-embedded magnetic NPs are prepared, composed of an 18-nm magnetic core and a 16-nm-thick silica shell with silver NPs formed on the surface. After simple aromatic compounds are adsorbed on the silver-embedded magnetic NPs, they are coated with silica to provide them with chemical and physical stability. The resulting silica-encapsulated magnetic NPs (M-SERS dots) produce strong SERS signals and have magnetic properties. In a model application as a tagging material, the M-SERS dots are successfully utilized for targeting breast-cancer cells (SKBR3) and floating leukemia cells (SP2/O). The targeted cancer cells can be easily separated from the untargeted cells using an external magnetic field. The separated targeted cancer cells exhibit a Raman signal originating from the M-SERS dots. This system proves to be an efficient tool for separating targeted cells. Additionally, the magnetic-field-induced hot spots, which can provide a 1000-times-stronger SERS intensity due to aggregation of the NPs, are studied.</P> <B>Graphic Abstract</B> <P>Multifunctional nanoparticles (M-SERS dots), which exhibit highly sensitive SERS signals, are used as SERS coding chemicals. The magnetically active SERS dots can be used for cancer-cell targeting, imaging, and separation (see image). <img src='wiley_img/16136810-2010-6-1-SMLL200901459-content.gif' alt='wiley_img/16136810-2010-6-1-SMLL200901459-content'> </P>
다양한 형태의 AAO membrane 제조 및 리튬이온 전지의 분리막 응용 연구
김문수(Moonsu Kim),임경민(Kyungmin Lim),하재윤(Jaeyun Ha),김용태(Yong-Tae Kim),최진섭(Jinsub Choi) 한국표면공학회 2021 한국표면공학회지 Vol.54 No.5
In order to improve the energy density and safety of Li-ion batteries, the development of a separator with high thermal stability and electrolyte wettability is an important desire. Thus, the ceramic separator to replace the polymer type is one of the most promising materials that can prevent short-circuit caused by the formation of dendrite and thermal deformation. In this study, we introduce the fabrication of various anodic aluminum oxide membranes for the application of Li-ion battery separators with the advantages of improved mechanical/thermal stability, wettability, and a high rate of Li+ migration through the membrane. Two different types of through-holes and branched anodic aluminum oxide membranes are well used in lithium-ion battery separators, however, branched anodic aluminum oxide membranes exhibit the most improved performance with capacity (126.0 mAh g<SUP>-1</SUP> @ 0.3C), capacity drop at the high C-rate (30.6 %), and low internal resistance (8.2 Ω).