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Progress in Natural Science:Materials International 2024年第1期34卷 194-206页

作者： Sung Cik Mun Yeong hoon Jeon jong ho won Battery Materials Research Center LG Chem Department of Energy Engineering Dankook University

With electric vehicles, energy storage systems, and portable electronic devices becoming increasingly popular, the demand for lithium-ion batteries has surged considerably. In the lithium-ion battery industry, n-methyl-2-pyrrolidone(NMP) is widely used as the solvent for cathode slurry, and polyvinylidene fluoride(PVDF) is used as the cathode binder. however, because of the harmful effect of NMP on the environment and human health, the use of NMP and PVDF for lithium-ion batteries will be highly regulated in the future. Therefore, developing eco-friendly alternatives is crucial for formulating systems using new solvents and binders. Despite numerous efforts, these alternatives have not been widely adopted across the lithium-ion battery industry. It is due to their limited ability to compete on price or performance to replace the traditional NMP/PVDF slurry formulations. This review investigates developments in the search for new solvents and binders that can be used in cathode slurry compositions. The new systems can potentially decrease energy consumption and manufacturing costs associated with NMP recovery, energy-intensive drying processes, and material expenses. We discuss key factors and technical challenges from earlier studies and compare them with the current, optimized formulations based on NMP and PVDF.

关键词： Lithium-ion battery Eco-friendly alternative Slurry formulation Chemical regulation Binder performance

Realizing High Thermoelectric Performance in n-Type Se-Free Bi2Te3 Materials by Spontaneous Incorporation of FeTe2 Nanoinclusions

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Energy & Environmental Materials 2024年第4期7卷 344-354页

作者： Jamil Ur Rahman Woo Hyun Nam Yong-Jae Jung jong ho won jong-Min Oh Nguyen Van Du Gul Rahman Víctor M.García-Suárez Ran He Kornelius Nielsch Jung Young Cho won-Seon Seo jong Wook Roh Sang-il Kim Soonil Lee Kyu Hyoung Lee Hyun Sik Kim Weon ho Shin Leibniz Institute for Solid State and Materials Research Advanced Materials Convergence R&D Division Korea Institute of Ceramic Engineering & Technology Department of Electronic Materials Engineering Kwangwoon University Department of Energy Engineering Dankook University Faculty of Fundamental Science Phenikaa University Department of Physics Quaid-i-Azam University Departamento de Física Universidad de Oviedo Nanomaterials and Nanotechnology Research Center-CINN Department of Materials Science and Engineering Yonsei University School of Nano & Materials Science and Engineering Kyungpook National University Department of Materials Science and Engineering University of Seoul School of Materials Science and Engineering Changwon National University

Bi2Te3-based materials have drawn much attention from the thermoelectric community due to their excellent thermoelectric performance near room ***,the stability of existing n-type Bi2（Te,Se）3materials is still low due to the evaporation energy of Se (37.70 kJ mol-1) being much lower than that of Te (52.55 kJ mol-1).The evaporated Se from the material causes problems in interconnects of the module while degrading the efficiency.

关键词： Bi2Te3 energy harvesting FeTe2 nanoinclusion n-type materials thermoelectric

Compensating the impurities on the Cu surface by MOFs for enhanced hydrocarbon production in the electrochemical reduction of carbon dioxide

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Journal of Energy Chemistry 2022年第3期31卷 68-73,I0003页

作者： Shin Joon Kang jong ho won Hansaem Choi Woohyeong Sim Mun Kyoung Kim Siraj Sultan Youngkook Kwon Hyung Mo Jeong School of Mechanical Engineering and Department of Smart Fab.Technology Sungkyunkwan University2066 Seobu-roJangan-guSuwon 16419Republic of Korea Department of Chemistry Kookmin University77 Jeongneung-roSeongbuk-guSeoul 02707Republic of Korea School of Energy and Chemical Engineering Emergent Hydrogen Technology R&D CenterUlsan National Institute of Science and Technology50 UNIST-gilUlsan 44919Republic of Korea

Copper(Cu)provides a cost-effective means of producing value-added fuels through the electrochemical reduction of carbon dioxide(CO_(2)RR).however,we observed the production of hydrocarbons via CO_(2)RR on commercial Cu films is less efficient because of the surface impurities,i.e.,*** monoxide(CO),a reaction intermediate of CO_(2)RR to hydrocarbons,binds strongly to the Fe sites and interrupts the production of hydrocarbons,resulting in an active hydrogen evolution reaction(HER).Herein,we report a method of blocking the effect of Fe impurities on the Cu surface through the preferential growth of nano-sized metal-organic frameworks(MOFs)on Fe *** zirconium(Zr)-based MOFs(UiO-66)forms a compensating layer on Cu film via the terephthalic acid(TPA)-Fe coordination bond,the Ui O-66 coated Cu film(UiO-66@Cu)presents significantly improved hydrocarbon Faradaic efficiency(FE)of 37.59%compared to 14.68%FE on commercial Cu film(99.9%purity)by suppressing *** to X-ray photoelectron spectroscopy(XPS)analysis,the UiO-66 ligand binds to entire metallic Fe site on the Cu surface,while metallic Cu is ***,UiO-66@Cu provides active sites of Cu for CO_(2)RR and leads to highly efficient and selective production of hydrocarbons.

关键词： Impurity on Cu film Zr-based MOFs Electrocatalysts CO_(2)reduction Hydrocarbon

Porously Reduced 2-Dimensional Bi_(2)O_(2)CO_(3) Petals for Strain-Mediated Electrochemical CO_(2) Reduction to HCOOH

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Energy & Environmental Materials 2024年第1期7卷 215-221页

作者： won Seok Cho Dae Myung hong Wan Jae Dong Tae Hyung Lee Chul jong Yoo Donghwa Lee ho won Jang jong-Lam Lee Department of Materials Science and Engineering Pohang University of Science and Technology(POSTECH)Pohang Gyungbuk 37673Korea Department of Materials Science and Engineering Research Institute of Advanced Materials Seoul National UniversitySeoul 08826Korea

Here we introduce bismuth-based catalysts for the efficient electrochemical reduction of CO_(2)to formic acid(HCOOH),which are composed of petal-shaped Bi_(2)O_(2)CO_(3)(BOC)that spontaneously formed from Bi thin film in aqueous carbonate solution at room *** the electrochemical reduction process,the BOC petals transform to reduced BOC(R-BOC)consisting of individual BOC and Bi *** mismatch between both domains induces biaxial strain at the *** functional theory calculations suggest that the tensile strain on the Bi domain stabilizes the*OCho intermediate,reducing the thermodynamic barrier toward CO_(2)conversion to *** with the thermodynamic benefit and the unique nanoporous petal-shaped morphology,R-BOC petals have a superior Faradaic efficiency of 95.9%at-0.8 V_(RHE)for the electrochemical conversion of CO_(2)to *** work demonstrates that the spontaneously formed binary phases with desirable lattice strain can increase the activity of bismuth catalysts to the CO_(2)reduction reaction;such a strategy can be applicable in design of various electrocatalysts.

关键词： bismuth carbon dioxide reduction formic acid heterointerfaces strain

A review of understanding electrocatalytic reactions in energy conversion and energy storage systems via scanning electrochemical microscopy

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Journal of Energy Chemistry 2024年第4期91卷 155-177页

作者： Jihye Park jong Hwan Lim Jin-Hyuk Kang Jiheon Lim ho won Jang hosun Shin Sun Hwa Park Interdisciplinary Materials Measurement Institute Korea Research Institute of Standards and ScienceDaejeon 34113Republic of Korea Department of Material Science and Engineering Seoul National UniversitySeoul 08826Republic of Korea Department of Applied Measurement Science University of Science and TechnologyDaejeon 34113Republic of Korea

To address climate change and promote environmental sustainability,electrochemical energy conversion and storage systems emerge as promising alternative to fossil fuels,catering to the escalating demand for *** optimal energy efficiency and cost competitiveness in these systems requires the strategic design of electrocatalysts,coupled with a thorough comprehension of the underlying mechanisms and degradation behavior occurring during the electrocatalysis *** electrochemical microscopy(SECM),an analytical technique for studying surface electrochemically,stands out as a powerful tool offering electrochemical *** possesses remarkable spatiotemporal resolution,enabling the visualization of the localized electrochemical activity and surface *** review compiles crucial research findings and recent breakthroughs in electrocatalytic processes utilizing the SECM methodology,specifically focusing on applications in electrolysis,fuel cells,and metal–oxygen batteries within the realm of energy conversion and storage *** with an overview of each energy system,the review introduces the fundamental principles of SECM,and aiming to provide new perspectives and broadening the scope of applied research by describing the major research categories within SECM.

关键词： Scanning electrochemical microscopy Electrocatalyst Electrocatalysis Water splitting Fuel cell Metal-oxygen battery

Towards high-performance and robust anion exchange membranes(AEMs)for water electrolysis:Super-acid-catalyzed synthesis of AEMs

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Journal of Energy Chemistry 2024年第6期93卷 478-510,I0012页

作者： Geun Woong Ryoo Sun Hwa Park Ki Chang Kwon jong Hun Kang ho won Jang Min Sang Kwon Department of Materials Science and Engineering Research Institute of Advanced Materials(RIAM)Seoul National UniversitySeoul 08826Republic of Korea Interdisciplinary Materials Measurement Institute Korea Research Institute of Standards and Science(KRISS)Daejeon 34113Republic of Korea Department of Chemical and Biological Engineering and Institute of Chemical ProcessSeoul National UniversitySeoul 08826Republic of Korea Department of Applied Measurement Science University of Science and TechnologyDaejeon 34113Republic of Korea

The increasing demand for hydrogen energy to address environmental issues and achieve carbon neutrality has elevated interest in green hydrogen production,which does not rely on fossil *** various hydrogen production technologies,anion exchange membrane water electrolyzer(AEMWE)has emerged as a next-generation technology known for its high hydrogen production efficiency and its ability to use non-metal ***,this technology faces significant challenges,particularly in terms of the membrane durability and low ionic *** address these challenges,research efforts have focused on developing membranes with a new backbone structure and anion exchange groups to enhance durability and ionic ***,the super-acid-catalyzed condensation(SACC)synthesis method stands out due to its user convenience,the ability to create high molecular weight(MW)polymers,and the use of oxygen-tolerant organic *** the synthesis of anion exchange membranes(AEMs)using the SACC method began in 2015,and despite growing interest in this synthesis approach,there remains a scarcity of review papers focusing on AEMs synthesized using the SACC *** review covers the basics of SACC synthesis,presents various polymers synthesized using this method,and summarizes the development of these polymers,particularly their building blocks including aryl,ketone,and anion exchange *** systematically describe the effects of changes in the molecular structure of each polymer component,conducted by various research groups,on the mechanical properties,conductivity,and operational stability of the *** review will provide insights into the development of AEMs with superior performance and operational stability suitable for water electrolysis applications.

关键词： Green hydrogen production Water electrolysis Anion exchange membrane water electrolyzer(AEMWE) Anion exchange membranes(AEMs) Super-acid-catalyzed condensation(SACC)

Crystallographically vacancy‐induced MOF nanosheet as rational single‐atom support for accelerating CO_(2)electroreduction to CO

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Carbon Energy 2024年第8期6卷 49-62页

作者： Jin Hyuk Cho Joonhee Ma Chaehyeon Lee Jin Wook Lim Youngho Kim ho Yeon Jang Jaehyun Kim Myung‐gi Seo Youngheon Choi Youn Jeong Jang Sang Hyun Ahn ho won Jang Seoin Back jong‐Lam Lee Soo Young Kim Department of Materials Science and Engineering Korea UniversitySeoulRepublic of Korea Department of Chemical and Biomolecular Engineering Sogang UniversitySeoulRepublic of Korea Department of Materials Science and Engineering Pohang University of Science and Technology(POSTECH)PohangRepublic of Korea Department of Materials Science and Engineering Research Institute of Advanced MaterialsSeoul National UniversitySeoulRepublic of Korea Lotte Chemical R&D Center DaejeonRepublic of Korea Department of Chemical Engineering Hanyang UniversitySeoulRepublic of Korea School of Chemical Engineering and Material Science Chung‐Ang UniversitySeoulRepublic of Korea

To attain a circular carbon economy and resolve CO_(2)electroreduction technology obstacles,single‐atom catalysts(SACs)have emerged as a logical option for electrocatalysis because of their extraordinary catalytic *** SACs,metal–organic frameworks(MOFs)have been recognized as promising support materials because of their exceptional ability to prevent metal *** study shows that atomically dispersed Ni single atoms on a precisely engineered MOF nanosheet display a high Faradaic efficiency of approximately 100%for CO formation in H‐cell and three‐compartment microfluidic flow‐cell reactors and an excellent turnover frequency of 23,699 h−1,validating their intrinsic catalytic *** results suggest that crystallographic variations affect the abundant vacancy sites on the MOF nanosheets,which are linked to the evaporation of Zn‐containing organic linkers during ***,using X‐ray absorption spectroscopy and density functional theory calculations,a comprehensive investigation of the unsaturated atomic coordination environments and the underlying mechanism involving CO^(*)preadsorbed sites as initial states was possible and provided valuable insights.

关键词： 2‐dimensional material carbon dioxide reduction metal-organic frameworks single‐atom catalysts vacancy sites

Long cycle-life aqueous Zn battery enabled by facile carbon nanotube coating on Cu current collector

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Carbon Energy 2024年第6期6卷 151-164页

作者： Beom-Keun Cho Sung-ho Huh So Hee Kim Seungho Yu jong-Seong Bae Jung-Keun Yoo Seung-ho Yu Department of Chemical and Biological Engineering Korea UniversitySeoulRepublic of Korea Advanced Analysis Center Korea Institute of Science and Technology(KIST)SeoulRepublic of Korea Energy Storage Research Center Korea Institute of Science and Technology(KIST)SeoulRepublic of Korea KIST School Division of Energy and Environment TechnologyKorea University of Science and TechnologySeoulRepublic of Korea Busan Center Korea Basic Science Institute(KBSI)BusanRepublic of Korea Carbon Composites Department Composites Research DivisionKorea Institute of Materials Science(KIMS)ChangwonRepublic of Korea

As an alternative to Li-ion batteries,aqueous Zn batteries have gained attention due to the abundance of Zn metal,low reduction potential(-0.76 V *** hydrogen electrode),and high theoretical capacity(820 mAh g^(-1))of multivalent Zn2+***,the growth of Zn dendrites and the formation of irreversible surface reaction byproducts pose challenges for ensuring a long battery lifespan and ***,the Cu foil coated with a single-walled carbon nanotube(SWCNT)layer using a facile doctor blade casting method is *** SWCNT-coated Cu foil demonstrates a significantly longer battery lifespan compared to the bare Cu in the half-cell *** operando optical microscopy imaging,we are able to provide intuitive evidence that Zn deposition occurs between the carbon nanotube(CNT)coating and Cu substrate,in agreement with the computational ***,with various imaging techniques,the flat morphology and homogeneous distribution of Zn beneath the SWCNT layer are *** addition,the full-cell using CNT-coated Cu exhibits a long cycle life compared to the control group,thereby demonstrating improved electrochemical performance with limited Zn for the cycling process.

关键词： aqueous Zn battery carbon nanotube operando imaging surface coating

Magnetic resonance evaluation of human mesenchymal stem cells in corpus cavernosa of rats and rabbits

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Asian Journal of Andrology 2007年第3期9卷 361-367页

作者： Yun-Seob Song Ja-Hyeon Ku Eun-Seop Song Jung-hoon Kim Jin-Suck Jeon Kong-Hee Lee Sook-Ja Kim Hee-Jeong Cheong Ik-Sung Lim Dongho Choi jong-ho won Department of Urology Stem Cell therapy Center Soonchunhyang School of Medicine Seoul 140-743 Korea Department of Urology Seoul National University Hospital Seoul 110-744 Korea Department of Obstetrics and Gynecology Inha University School of Medicine Incheon 400-103 Korea Department of Radiology Soonchunhyang School of Medicine Seoul 140-743 Korea Department of Internal Medicine Soonchunhyang School of Medicine Seoul 140-743 Korea Department of Urology Soonchunhyang School of Medicine Seoul 140-743 Korea Stem Cell therapy Center Soonchunhyang School of Medicine Seoul 140-743 Korea Department of Industrial Management ＆ Engineering Namseoul University College of Engineering Cheonan 330-707 Korea Department of Surgery Stem Cell therapy Center Soonchunhyang School of Medicine Seoul 140-743 Korea Department of Internal Medicine Stem Cell therapy Center Soonchunhyang School of Medicine Seoul 140-743 Korea

Aim： To investigate whether the biological process of superparamagnetic iron oxide （SPIO）-labeled human mesenchymal stem cells （hMSCs） may be monitored non-invasively by using in vivo magnetic resonance （MR） imaging with conventional 1.5-T system examinations in corpus cavernosa of rats and rabbits. Methods： The labeling efficiency and viability of SP10-labeled hMSCs were examined with Prussian blue and Tripan blue, respectively. After SPIO-labeled hMSCs were transplanted to the corpus cavernosa of rats and rabbits, serial T2-weighted MR images were taken and histological examinations were carried out over a 4-week period. Results： hMSCs loaded with SPIO compared to unlabeled cells had a similar viability. For SPIO-labeled hMSCs more than lx 105 concentration in vitro, MR images showed a decrease in signal intensity. MR signal intensity at the areas of SPIO-labeled hMSCs in the rat and rabbit corpus cavernosa decreased and was confined locally. After injection of SPIO-labeled hMSCs into the corpus cavernosum, MR imaging demonstrated that hMSCs could be seen for at least 12 weeks after injection. The presence of iron was confirmed with Prussian blue staining in histological sections. Conclusion： SP10-labeled hMSCs in corpus cavernosa of rats and rabbits can be evaluated non-invasively by molecular MR imaging. Our findings suggest that MR imaging has the ability to test the long-term therapeutic potential of hMSCs in animals in the setting of erectile dysfunction.

关键词： human mesenchymal stem cells magnetic resonance stem cells penis cell labeling corpus cavemosa

边缘区淋巴瘤晚期患者R-CVP后利妥昔单抗维持治疗的Ⅱ期研究:一项改善淋巴瘤生存协会(CISL)的研究

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癌症 2020年第3期39卷 118-128页

作者： Sung Yong Oh won Seog Kim Jin Seok Kim Seok Jin Kim Dok Hyun Yoon Deok‑Hwan Yang won Sik Lee Hyo Jung Kim ho‑Young Yhim Seong Hyun Jeong jong ho won Suee Lee Jee Hyun Kong Sung‑Nam Lim Jun ho Ji Kyung A.Kwon Gyeong‑won Lee Jae hoon Lee ho Sup Lee ho‑Jin Shin Cheolwon Suh Department of Internal Medicine Dong-A University HospitalBusan 49201Republic of Korea Department of Medicine Samsung Medical CenterSungkyunkwan University School of MedicineSeoul 06351Republic of Korea Division of Hematology Department of Internal MedicineYonsei University College of MedicineSeoul 03722Republic of Korea Department of Oncology Asan Medical CenterUniversity of Ulsan College of MedicineSongpa‑guSeoul 05505Republic of Korea Department of Hematology‑Oncology Chonnam National University Hwasun HospitalHwasun 58128Republic of Korea Department of Hematology Busan Paik HospitalInje University College of MedicineBusan 04511Republic of Korea Department of Internal Medicine Hallym University Sacred Heart HospitalHallym University College of MedicineAnyang 14068Republic of Korea Department of Internal Medicine Chonbuk National University HospitalJeonju 54907Republic of Korea Department of Hematology‑Oncology Ajou University School of MedicineSuwon 16499Republic of Korea Department of Internal Medicine Soonchunhyang University Seoul HospitalSoonchunhyang University College of MedicineSeoul 04401Republic of Korea Division of Hematology‑Oncology Department of Internal MedicineWonju Severance Christian HospitalYonsei University College of MedicineWonju 26426Republic of Korea Department of Internal Medicine Haeundae Paik HospitalInje University College of MedicineBusan 48108Republic of Korea Division of Hematology and Oncology Department of Internal MedicineSamsung Changwon HospitalSungkyunkwan University School of MedicineChangwon 51353Republic of Korea Division of Hematology‑Oncology Department of Internal MedicineDongnam Institute of Radiological and Medical SciencesBusan 46033Republic of Korea Division of Hematology‑Oncology Department of Internal MedicineGyeongsang National University HospitalGyeongsang National University College of MedicineJinju 52727Republic of Korea Department of Internal Medicine Gachon University Gil Medical CenterIncheon 21565Republic of

背景与目的利妥昔单抗是一种靶向CD20的单克隆抗体,在治疗边缘区淋巴瘤(marginal zone lymphoma,MZL)中可以单药或联合化疗使用,可提高缓解率和生存率,但治疗后仍可能会复发。因此,仍需探索如何延长MZL患者的缓解期的治疗方案。这项多... 详细信息

背景与目的利妥昔单抗是一种靶向CD20的单克隆抗体,在治疗边缘区淋巴瘤(marginal zone lymphoma,MZL)中可以单药或联合化疗使用,可提高缓解率和生存率,但治疗后仍可能会复发。因此,仍需探索如何延长MZL患者的缓解期的治疗方案。这项多中心、单臂、开放标签的Ⅱ期研究评估了对一线R-CVP(rituximab,cyclophosphamide,vincristine,and prednisolone;利妥昔单抗、环磷酰胺、长春新碱和泼尼松龙)治疗有反应的Ⅲ–Ⅳ期CD20阳性MZL患者进行利妥昔单抗维持治疗2年的生存率。本研究旨在明确R-CVP后利妥昔单抗维持治疗的策略是否有进一步研究的价值。方法在利妥昔单抗维持治疗之前,Ⅲ–Ⅳ期MZL患者应接受6–8周期的R-CVP一线治疗。每个周期为3周,第1 d静脉输注利妥昔单抗(375 mg/m^2)、环磷酰胺(750 mg/m^2)和长春新碱(1.4 mg/m^2;最大2 mg),第1–5 d口服泼尼松龙(100 mg)。对R-CVP治疗达到完全缓解(complete response,CR)、部分缓解(part response,PR)或疾病稳定(stable response,SD)的患者进行利妥昔单抗维持治疗,每8周静脉注射利妥昔单抗375mg/m^2,直到12个周期。主要终点为无进展生存期(progression-free surviva,PFS),次要终点为总生存期(overall survival,OS)和治疗安全性。结果共纳入47例患者,其中45(96%)例接受了利妥昔单抗维持治疗。15(33%)例患者有淋巴结MZL。在进行R-CVP一线治疗后,分别有20(44%)例、22(49%)例和3(7%)例的患者达到了CR、PR和SD。中位随访38.2个月后,患者的3年PFS率为81%。在利妥昔单抗维持治疗期间,R-CVP治疗后有6例PR和1例SD患者获得CR。LDH升高和B症状是PFS的重要预后因素(P=0.003),3年OS率为90%。利妥昔单抗维持治疗的耐受性良好,常见的治疗性不良事件为感觉性神经病(18%)、肌痛(13%)、疲劳(9%)和中性粒细胞减少(9%)。结论一线R-CVP治疗后利妥昔单抗维持治疗在Ⅲ–Ⅳ期MZL患者中不仅表现出较好的PFS,而且药物毒性反应评价良好。

关键词：边缘区淋巴瘤晚期利妥昔单抗环磷酰胺长春新碱维持多中心开放标签生存