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Green and sustainably designed intercalation-type anodes for emerging lithium dual-ion batteries with high energy density

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Journal of Energy Chemistry 2023年第5期80卷 466-478,I0011页

作者： Tejaswi Tanaji Salunkhe Abhijit Nanaso Kadam Jaehyun Hur il tae kim Department of Chemical and Biological Engineering Gachon UniversitySeongnam-siGyeonggi-do 13120South Korea Department of Chemistry John Wilson Education Society'sWilson College(Autonomous)MumbaiMaharahtra 400007India

Lithium dual-ion batteries(LiDIBs)have attracted significant attention owing to the growing demand for modern anode materials with high energy ***,rust encapsulated in graphite was achieved by utilizing ammonium bicarbonate(ABC)as a template,which resulted in mesoporous Fe3O4embedded in expanded carbon(Fe3O4@G(ABC))via simple ball milling followed by *** self-assembly approach for graphite-encapsulated Fe3O4composites helps enhance the electrochemical performance,such as the cycling stability and superior rate stability(at 3 A/g),with improved conductivity in Li ***,Fe3O4@G-1:4(ABC)and Fe3O4@G-1:6(ABC)anodes in a half-cell at 0.1 A/g delivered initial capacities of 1390.6 and 824.4 mA h g^(-1),*** optimized anode(Fe3O4@G-1:4(ABC))coupled with the expanded graphite(EG)cathode in Li DIBs provided a substantial initial specific capacity of 260.9 mA h g^(-1)at 1 A/g and a specific capacity regain of 106.3 mA h g^(-1)(at 0.1 A/g)after 250 cycles,with a very high energy density of 387.9 Wh kg^(-1).The strategically designed Fe3O4@G accelerated Li-ion kinetics,alleviated the volume change,and provided an efficient conductive network with excellent mechanical flexibility,resulting in exceptional performance in Li *** postmortem analyses of the anode and cathode(XRD,Raman,EDS,and XPS)are presented to explain the intercalation-type electrochemical mechanisms of Li *** study offers several advantages,including safety,low cost,sustainability,environmental friendliness,and high energy density.

关键词： Lithium dual-ion batteries Rust encapsulated graphite Ammonium bicarbonate Intercalation-type anode Energy density

Clinical meaning of BRAF mutation in Korean patients with advanced colorectal cancer

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World Journal of Gastroenterology 2014年第15期20卷 4370-4376页

作者： Bun kim Soo Jung Park Jae Hee Cheon tae il kim Won Ho kim Sung Pil Hong Department of Internal Medicine Institute of GastroenterologyYonsei University College of MedicineSeoul 120-752South Korea

AIM: To evaluate the clinicopathological features of colorectal cancer (CRC) with a v-Raf murine sarcoma viral oncogene homolog B1 (BRAF) mutation and its molecular interaction with microsatellite instability (MSI) an... 详细信息

关键词： BRAF Colorectal cancer Molecular features Chemotherapy response Prognosis

Combination-based nanomaterial designs in single and double dimensions for improved electrodes in lithium ion-batteries and faradaic supercapacitors

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Journal of Energy Chemistry 2019年第11期28卷 119-146页

作者： Tuyet Nhung Pham Duckshin Park Yongil Lee il tae kim Jaehyun Hur You-Kwan Oh Young-Chul Lee Department of BioNano Technology Gachon University1342 SeongnamdaeroSujeong-guSeongnam-siGyeonggi-do 13120Republic of Korea Korea Railroad Research Institute(KRRI) 176 Cheoldobakmulkwan-roUiwang-si 16105Gyeonggi-doRepublic of Korea Department of Chemical and Biological Engineering Gachon UniversitySeongnam-siGyeonggi-do 13120Republic of Korea School of Chemical and Biomolecular Engineering Pusan National UniversityBusan 46241Republic of Korea

In the past decade, researchers in the fields of energy production have concentrated on the improvement of new energy storage devices. Lithium-ion batteries(LIBs) and faradaic supercapacitors(FSs) have attracted special attention as a result of the rapid development of new electrode nanomaterials, especially hybrid nanomaterials, which can meet the increasingly higher requirements for future energy, such as the capability to deliver high-power performance and an extremely long life cycle. In these hybrid nanostructures, a series of synergistic effects and unique properties arising from the combination of individual components are a major factor leading to improved charge/discharge capability, energy density, and system lifetime. This paper describes the most recent progress in the growth of hybrid electrode materials for LIBs and FSs systems, focusing on the combination of zero-dimensional(0 D), one-dimensional(1 D), two-dimensional(2 D), and three-dimensional(3 D) nanomaterials, respectively.

关键词： Hybrid nanomaterials Synergistic effects Zero-dimensional nanomaterials One-dimensional nanomaterials Two-dimensional nanomaterials Three-dimensional nanomaterials

Conventional endoscopic features are not sufficient to differentiate small, early colorectal cancer

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World Journal of Gastroenterology 2014年第21期20卷 6586-6593页

作者： Wan Park Bun kim Soo Jung Park Jae Hee Cheon tae il kim Won Ho kim Sung Pil Hong Department of Internal Medicine and Institute of Gastroenterology Yonsei University College of MedicineSeoul 120-752South Korea

AIM: To evaluate the depth of invasion of small, early colorectal cancers (ECCs) using conventional endoscopic features.

关键词： Colonoscopy Colorectal neoplasms Differential diagnosis

Avoiding heating interference and guided thermal conduction in stretchable devices using thermal conductive composite islands

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Nano Research 2021年第9期14卷 3253-3259页

作者： Seung Ji Kang Haeleen Hong Chanho Jeong Ju Seung Lee Hyewon Ryu Jae-hun Yang Jong Uk kim Yiel Jae Shin tae-il kim School of Chemical Engineering Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Department of Biomedical Engineering Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Biomedical Institute for Convergence(BICS) Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea

The miniaturization and high integration of devices demand significant thermal management *** technologies for the thermal management of electronics show some limitations in the case of multiple chip arrays.A device in multiple chip array is affected by heat from adjacent devices,along with thermal conductive *** address this problem,we present a nano composite of aligned boron nitride(BN)nanosheet islands with porous polydimethylsiloxane(PDMS)foam to have mechanical stability and non-thermal *** islands of tetrahedrally-structured BN in the composite have a high thermal conductivity of 1.219 W·m^(-1)·K^(-1) in the through-plane direction(11.234W·m^(-1)·K^(-1)in the in-plane direction)with 16 wt.%loading of *** the other hand,porous PDMS foam has a low thermal conductivity of 0.0328W·m^(-1)·K^(-1) in the through-plane direction at 70%*** pathways are then formed only in the structured BN islands of the *** porous PDMS foam can be applied as a thermal barrier between structured BN islands to inhibit thermal interference in multiple device ***,this composite can maintain selective thermal dissipation performance with 70%tensile *** beauty of the work is that it could have guided heat dissipation by assembling of multiple layers which have high vertical thermal conductive islands,while inhibiting thermal *** selective heat dissipating composite can be applied as a heatsink for multiple chip arrays electronics.

关键词： selective thermal conduction non-thermal interference thermal conductive composite island stretchable electronics structured boron nitride nanosheet(s-BN) porous polydimethylsiloxane(p-PDMS)

Nomogram for prediction of pathologic complete remission using biomarker expression and endoscopic finding after preoperative chemoradiotherapy in rectal cancer

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Chinese Journal of Cancer Research 2020年第2期32卷 228-241页

作者： Hyuk Hur Min Soo Cho Woong Sub Koom Joon Seok Lim tae il kim Joong Bae Ahn Hoguen kim Nam Kyu kim Division of Colon and Rectal Surgery Department of SurgerySeverance HospitalYonsei University College of MedicineSeoul 03722Korea Department of Radiation Oncology Severance HospitalYonsei University College of MedicineSeoul 03722Korea Departm ent of Radiology Research Institute of Radiological ScienceSeverance HospitalYonsei University College of MedicineSeoul 03722Korea Department of Internal Medicine Institute of Gastroenterology Department of Medical Oncology Severance HospitalYonsei University College of MedicineSeoul 03722Korea Department of Pathology Severance HospitalYonsei University College of MedicineSeoul 03722Korea

Objective:The aim of this study is to develop a nomogram for prediction of pathologic complete remission(p CR)after preoperative chemoradiotherapy(CRT)for rectal ***:m RNA expression levels of seven molecular markers[p53,p21,Ki-67,vascular endothelial growth factor(VEGF),CD133,CD24,CD44]were measured by reverse transcriptase polymerase chain reaction(RTPCR)in 120 rectal *** findings of clinical complete remission(c CR)and biologic variables were used to construct nomogram in the training group(n=80),which was validated in the validation group(n=40).Results:m RNA expression levels of four markers(p53,p21,Ki67,CD133)correlated with p CR(24/80,30.0%)in the training *** expression of p53 and/or high expression of p21,Ki67 and CD133 showed greater p CR rate.p CR was shown in 18(69.2%)of 26 cases showing endoscopic c CR in the training *** p CR rate was demonstrated in lower tumor location than middle tumor(19/49,38.8%vs.5/31,16.1%).A nomogram for prediction of p CR was developed from the multivariate prediction model using these six variables,which showed good discrimination ability in the training group[area under the curve(AUC)=0.945]and validation group(AUC=0.922).The calibration plot showed good agreement between actual and predicted p CR in both patient ***:Nomogram for assessment of p CR can be useful for making treatment decisions after CRT according to predicted responses.

关键词： Rectal cancer chemoradiotherapy treatment response molecular marker endoscopy nomogram

Fibrillary gelation and dedoping of PEDOT:PSS fibers for interdigitated organic electrochemical transistors and circuits

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npj Flexible Electronics 2022年第1期6卷 330-340页

作者： Young Jin Jo Soo Young kim Jeong Hun Hyun Byeonghak Park Seunghwan Choy Gyan Raj Koirala tae-il kim School of Chemical Engineering Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Biomedical Institute for Convergence(BICS) Sungkyunkwan University(SKKU)Suwon 16419Korea

As one of conducting polymers,PEDOT:PSS,is commonly used in organic electronics,especially for bioelectronics due to its advantages such as high electrical and ionic conductivity,solution-processability and *** bioelectronics with the PEDOT:PSS requires advanced techniques to obtain physical/chemical modification of the PEDOT:PSS for improved performance and various *** satisfy these demands,fibrillary gelation of PEDOT:PSS by injection to choline acetate,an ionic liquid,with a constant flow rate was used in this study to make a conductive fiber and improve characteristics of PEDOT:*** fibers by fibrillary gelation showed enhanced electrical conductivity of about 400 S cm^(-1) and volumetric capacitance of about 154 F cm^(−3) which would be strongly beneficial to be utilized for organic electrochemical transistors(OECTs),resulting in a high transconductance of 19 mS in a ***,dedoping of the conductive fibers by PEI(polyethyleneimine)enabled the creation of enhancement-mode *** inverters were then fabricated by connecting depletion and enhancement-mode *** results demonstrate that these conductive fibers and electronic-textiles are suitable candidates for applications in bio-integrated electronics.

关键词： fibers doping digit

Wearable EEG electronics for a Brain–AI Closed-Loop System to enhance autonomous machine decision-making

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npj Flexible Electronics 2022年第1期6卷 296-307页

作者： Joo Hwan Shin Junmo Kwon Jong Uk kim Hyewon Ryu Jehyung Ok SJoon Kwon Hyunjin Park tae-il kim School of Chemical Engineering Sungkyunkwan University(SKKU)Suwon 16419Republic of Korea Department of Electrical and Computer Engineering Sungkyunkwan University(SKKU)Suwon 16419Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan University(SKKU)Suwon 16419Korea Center for Neuroscience Imaging Research Institute for Basic ScienceSuwon 16419Korea Biomedical Institue for Convergence(BICS)SKKU Suwon 16419Korea

Human nonverbal communication tools are very ambiguous and difficult to transfer to machines or artificial intelligence(AI).If the AI understands the mental state behind a user’s decision,it can learn more appropriate decisions even in unclear *** introduce the Brain-AI Closed-Loop System(BACLoS),a wireless interaction platform that enables human brain wave analysis and transfers results to AI to verify and enhance AI *** developed a wireless earbud-like electroencephalography(EEG)measurement device,combined with tattoo-like electrodes and connectors,which enables continuous recording of high-quality EEG signals,especially the error-related potential(ErrP).The sensor measures the ErrP signals,which reflects the human cognitive consequences of an unpredicted machine *** AI corrects or reinforces decisions depending on the presence or absence of the ErrP signals,which is determined by deep learning classification of the received EEG *** demonstrate the BACLoS for AIbased machines,including autonomous driving vehicles,maze solvers,and assistant interfaces.

关键词： autonomous EEG enable

Intestinal Behet's disease appearing during treatment with adalimumab in a patient with ankylosing spondylitis

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World Journal of Gastroenterology 2013年第32期19卷 5389-5392页

作者： Sook Hee Chung Soo Jung Park Sung Pil Hong Jae Hee Cheon tae il kim Won Ho kim Department of Internal Medicine and Institute of Gastroenterology Yonsei University College of Medicine

Behet’s disease(BD)is a chronic inflammatory disease affecting multiple organ systems,such as the skin,joints,blood vessels,central nervous system,and gastrointestinal *** BD is characterized by intestinal ulcerations and gastrointestinal *** medical treatment of intestinal BD includes corticosteroids and *** have been several reports of tumor necrosis factor-α (TNF-α)blockers being successful in treatment of refractory intestinal ***,we report on a patient who was diagnosed with intestinal BD despite treatment with the fully humanized TNF-α blocker(adalimumab)for underlying ankylosing *** patient achieved clinical remission and complete mucosal healing through the addition of a steroid and azathioprine to the adalimumab regimen.

关键词： Intestinal Behet's disease Tumor necrosis factor-α Adalimumab