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Structural and electrochemical stabilization enabling high-energy P3-type Cr-based layered oxide cathode for K-ion batteries

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Carbon Energy 2024年第5期6卷 81-93页

作者： wonseok Ko Seokjin Lee Hyunyoung Park jungmin Kang Jinho Ahn Yongseok Lee Gwangeon Oh jung-Keun Yoo Jang-Yeon Hwang Jongsoon Kim Department of Energy Science Sungkyunkwan UniversitySuwonRepublic of Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan UniversitySuwonRepublic of Korea Department of Energy Engineering Hanyang UniversitySeoulRepublic of Korea Carbon Composites Department Korea Institute of Materials Science(KIMS)ChangwonRepublic of Korea Department of Battery Engineering Hanyang UniversitySeoulRepublic of Korea

Layered-type transition metal(TM)oxides are considered as one of the most promising cathodes for K-ion batteries because of the large theoretical gravimetric capacity by low molar ***,they suffer from severe structural change by de/intercalation and diffusion of K^(+)ions with large ionic size,which results in not only much lower reversible capacity than the theoretical capacity but also poor power ***,it is important to enhance the structural stability of the layered-type TM oxides for outstanding electrochemical behaviors under the K-ion battery ***,it is investigated that the substitution of the appropriate Ti^(4+)contents enables a highly enlarged reversible capacity of P3-type KxCrO_(2) using combined studies of first-principles calculation and various *** the pristine P3-type KxCrO_(2) just exhibits the reversible capacity of∼120 mAh g^(−1) in the voltage range of 1.5-4.0 V(vs.K^(+)/K),the∼0.61 mol K^(+)corresponding to∼150 mAh g^(−1) can be reversible de/intercalated at the structure of P3-type K0.71[Cr_(0.75)Ti_(0.25)]O_(2) under the same ***,even at the high current density of 788 mA g^(−1),the specific capacity of P3-type K0.71[Cr_(0.75)Ti_(0.25)]O_(2) is∼120 mAh g^(−1),which is∼81 times larger than that of the pristine P3-type KxCrO_(2).It is believed that this research can provide an effective strategy to improve the electrochemical performances of the cathode materials suffered by severe structural change that occurred during charge/discharge under not only K-ion battery system but also other rechargeable battery systems.

关键词： cathodes first-principles calculations layered-type oxide materials potassium-ion batteries structural stabilization

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Korean red ginseng alleviates benign prostatic hyperplasia by dysregulating androgen receptor signaling and inhibiting DRP1-mediated mitochondrial fission

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Chinese Journal of Natural Medicines 2024年第7期22卷 599-607页

作者： HONG Geum-Lan KIM Kyung-Hyun CHO Sung-Pil LEE Hui-Ju KIM Yae-Ji jung Ju-Young Department of Veterinary Medicine&Institute of Veterinary Science Chungnam National UniversityDaejeon 34134Korea Department of Anatomy College of MedicineKonyang UniversityDaejeon 35365Korea

Panax ginseng(***.)has been traditionally employed in Korea and China to alleviate fatigue and digestive *** particular,Korean red ginseng(KRG),derived from streamed and dried ***,is known for its anti-aging and anti-inflammatory ***,its effects on benign prostatic hyperplasia(BPH),a representative aging-related disease,and the underlying mechanisms remain *** study aims to elucidate the therapeutic effects of KRG on BPH,with a particular focus on mitochondrial dynamics,including fission and fusion *** effects of KRG on cell proliferation,apoptosis,and mitochondrial dynamics and morphology were evaluated in a rat model of testosterone propionate(TP)-induced BPH and TP-treated LNCaP cells,with mdivi-1 as a *** results revealed that KRG treatment reduced the levels of androgen receptors(AR)and prostate-specific antigens in the BPH *** inhibited cell proliferation by downregulating cyclin D and proliferating cell nuclear antigen(PCNA)levels,and it promoted apoptosis by increasing the ratio of B-cell lymphoma protein 2(Bcl-2)-associated X protein(Bax)to Bcl-2 ***,KRG treatment enhanced the phosphorylation of dynamin-related protein 1(DRP-1,serine 637)compared with that in the BPH group,which inhibited mitochondrial fission and led to mitochondrial *** modulation of mitochondrial dynamics was associated with decreased cell proliferation and increased *** dysregulating AR signaling and inhibiting mitochondrial fission through enhanced DRP-1(ser637)phosphorylation,KRG effectively reduced cell proliferation and induced *** findings suggest that KRG’s regulation of mitochondrial dynamics offers a promising clinical approach for the treatment of BPH.

关键词： Androgen Benign prostatic hyperplasia Fission Korean red ginseng Mitochondria

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[001]-texturing of(K,Na)NbO_(3)-based piezoceramics with a pseudocubic structure and their application to piezoelectric devices

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Journal of Materiomics 2024年第3期10卷 632-642页

作者： Su-Hwan Go Seok-jung Park Seung-Hyun Kim Seok-June Chae Eun-Ji Kim Geun-Su Lee Sahn Nahm Department of Materials Science and Engineering Korea UniversitySeoul02841Republic of Korea

0.96(K_(0.5)Na_(0.5-z)Li_(z))(Nb_(0.92)Sb_(0.08))O_(3)-0.04(Ca_(0.5)Sr_(0.5))ZrO_(3)[(KN_(0.5-z)L_(z))NS-CSZ]piezoceramics(0≤z≤0.04)were aligned in the[001]orientation using 3%(in mole)NaNbO_(3)templates with a large Lotgering factor(>97%).Their crystal structures transformed from the orthorhombic-pseudocubic(O-P)structure to the orthorhombic-tetragonal-pseudocubic(O-T-P)structure with an increasing *** P structure was interpreted as a rhombohedral R3m *** piezoelectricity of the compositions increased after[001]-texturing,and the enhancement was proportional to the O phase *** composition(z=0.03)exhibited the highest piezoelectric constant(d_(33);670 pC/N)and electromechanical coupling factor(k_(p);0.56).Piezoelectric energy harvesters were produced using the untextured and textured samples(z=0.03).The textured harvester delivered a large power density of 26.6 mW/mm^(3),which was larger than that of the untextured harvester owing to the enhanced kp and d_(33)×g_(33) of the textured piezoceramic.A multilayer actuator was produced using the textured sample(z=0.03),and it exhibited a large acceleration(44.2 G)and displacement(±3,730 mm)at±25 ***,the[001]-textured(KN_(0.47)L_(0.03))NS-CSZ piezoceramic is suitable for piezoelectric energy harvesters and actuators.

关键词： KNN-Based piezoceramic Lead-free Energy harvester Actuator Reactive template grain growth

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Effects of Flower Buds Extract of Tussilago farfara on Focal Cerebral Ischemia in Rats and Inflammatory Response in BV2 Microglia

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Chinese Journal of Integrative Medicine 2018年第11期24卷 844-852页

作者： Ji Hye Hwang Vinoth Kumar R Seok Yong Kang hyo won jung Yong-Ki Park Department of Acupuncture and Moxibustion Medicine College of Korean Medicine Gachon University Department of Herbology College of Korean Medicine Dongguk University

Objective： To investigate the effects of the flower buds extract of Tussilago farfara Linné（Farfarae Flos; FF） on focal cerebral ischemia through regulation of inflammatory responses in activated microglia. Methods： Brain ischemia was induced in Sprague-Dawley rats by a transient middle cerebral artery occlusion（t MCAO） for 90 min and reperfusion for 24 h. Twenty rats were randomly divided into 4 groups（n=5 per group）： normal, t MCAO-induced ischemic control, t MCAO plus FF extract 300 mg/kg-treated, and t MCAO plus MK-801 1 mg/kg-treated as reference drug. FF extract（300 mg/kg, p.o.） or MK-801（1 mg/kg, i.p.） was administered after reperfusion. Brain infarction was measured by 2,3,5,-triphenyltetrazolium chloride staining. Neuronal damage was observed by haematoxylin eosin, Nissl staining and immunohistochemistry using anti-neuronal nuclei（Neu N）, anti-glial fibril ary acidic protein（GFAP）, and antiCD11 b/c（OX42） antibodies in ischemic brain. The expressions of inducible nitric oxide synthase（i NOS）, tumor necrosis factor（TNF-α）, and hypoxia-inducible factor-1 a（HIF-1α） were determined by Western blot. BV2 microglial cel s were treated with FF extract or its main bioactive compound, tussilagone with or without lipopolysaccharide（LPS）. Nitric oxide（NO） production was measured in culture medium by Griess assay. The expressions of i NOS, COX-2 and pro-inflammatory cytokines mRNA were analyzed by reverse transcription-polymerase chain reaction. The expression of i NOS, and COX-2 proteins, the phosphorylation of ERK1/2, JNK, and p38 MAPK and the nuclear expression of NF-κB p65 in BV2 cells were determined by Western blot. Results： FF extract significantly decreased brain infarctions in ischemic rats（P〈0.01）. The neuronal death and the microglia/astrocytes activation in ischemic brains were inhibited by FF extract. FF extract also suppressed i NOS, TNF-α, and HIF-1α expression in ischemic brains. FF extract（0.2 and 0.5 mg/m L, P〈0.01） and tussilagone 20 and 50 μmol/L, P〈0

关键词： Tussilago farfara focal cerebral ischemia inflammation microglia tussilagone

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

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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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Potential industrial applications of photo/electrocatalysis: Recent progress and future challenges

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Green Energy & Environment 2024年第5期9卷 859-876页

作者： Jinhao Li Jing Ren Shaoquan Li Guangchao Li Molly Meng-jung Li Rengui Li Young Soo Kang Xiaoxin Zou Yong Luo Bin Liu Yufei Zhao State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing100029China Quzhou Institute for Innovation in Resource Chemical Engineering Quzhou324000China State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing100029China Department of Applied Physics The Hong Kong Polytechnic UniversityHong Kong999077China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian National Laboratory for Clean EnergyZhongshan Road 457Dalian116023China Environmental and Climate Technology Track of Korea Institute of Energy Korea Institute of Energy TechnologyNaju-siJeollanam do58217Republic of Korea State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun130012China

Nowadays,the rapid development of the social economy inevitably leads to global energy and environmental *** this reason,more and more scholars focus on the development of photocatalysis and/or electrocatalysis technology for the advantage in the sustainable production of high-value-added products,and the high efﬁciency in pollutants *** there is plenty of outstanding research has been put forward continuously,most of them focuses on catalysis performance and reaction mechanisms in laboratory *** industrial application of photo/electrocatalytic processes is still a challenge that needs to be overcome by social *** this regard,this review comprehensively summarized several explorations in theﬁeld of photo/electrocatalytic reduction towards potential industrial applications in recent *** attention is paid to the successful attempts and the current status of photo/electrocatalytic water splitting,carbon dioxide conversion,resource utilization from waste,etc.,by using advanced *** key problems and challenges of photo/electrocatalysis in future industrial practice are also discussed,and the possible development directions are also pointed out from the industry view.

关键词： Photocatalysis Electrocatalysis Industrial applications H2 economy

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ELK3-ID4 axis governs the metastatic features of triple negative breast cancer

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Oncology Research 2024年第1期32卷 127-138页

作者： JIN-HO CHOI JOO DONG PARK SEUNG HEE CHOI EUN-SU KO HYE jung JANG KYUNG-SOON PARK Department of Biomedical Science CHA UniversitySeongnamKorea

Purpose:Cancer cell metastasis is a multistep process,and the mechanism underlying extravasation remains ***3 is a transcription factor that plays a crucial role in regulating various cellular processes,including cancer *** on the finding that ELK3 promotes the metastasis of triple-negative breast cancer(TNBC),we investigated whether ELK3 regulates the extravasation of TNBC by forming the ELK3-ID4 ***4 functions as a transcriptional regulator that interacts with other transcription factors,inhibiting their activity and subsequently influencing various biological processes associated with cell differentiation,survival,growth,and ***:We assessed the correlation between the expression of ELK3 and that of ID4 in TNBCs using bioinformatics analyses,QRT-PCR,western blot analysis,luciferase reporter assays,and chromatin ***,adhesion,invasion,and lung metastasis assays were employed to determine whether the ELK3-ID4 axis regulates the metastatic features of ***:We found that ELK3 binds directly to a binding motif close to the ID4 promoter to repress promoter *** expression of E-cadherin in TNBC was regulated by the ELK3-ID4 *** vitro and in vivo analyses showed that inhibiting ID4 expression in ELK3-knockdown MDA-MB-231(ELK3KD)cells restored the ability to extravasate and ***:The results indicate that the ELK3 regulates ID4 promoter activity,and that the ELK3-ID4 axis regulates the metastatic characteristics of TNBC ***,the data suggest that the ELK3-ID4 axis regulates metastasis of TNBCs by modulating expression of E-cadherin.

关键词： E-cadherin Extravasation Colonization

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Impact of Transition Metal Layer Vacancy on the Structure and Performance of P2 Type Layered Sodium Cathode Material

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Nano-Micro Letters 2024年第11期16卷 340-358页

作者： Orynbay Zhanadilov Sourav Baiju Natalia Voronina Jun Ho Yu A.-Yeon Kim Hun‑Gi jung Kyuwook Ihm Olivier Guillon Payam Kaghazchi Seung‑Taek Myung Department of Nanotechnology and Advanced Materials Engineering and Sejong Battery Institute Hybrid Materials Research CenterSejong University98 Gunja‑DongGwangjin‑GuSeoul 05006South Korea Institute of Energy and Climate Research‑Materials Synthesis and Processing(IEK‑1) Forschungszentrum Jülich GmbH52425 JülichGermany Center for Energy Storage Research Korea Institute of Science and TechnologySeoul 02792South Korea KIST‑SKKU Carbon‑Neutral Research Center Sungkyunkwan UniversitySuwon 16419South Korea Department of Energy Science Sungkyunkwan UniversitySuwon 16419South Korea Pohang Accelerator Laboratory 80 Jigokro‑127‑BeongilNam‑GuPohangGyeongbuk 37673South Korea MESA+Institute for Nanotechnology University of Twente7500 AE EnschedeThe Netherlands

This study explores the impact of introducing vacancy in the transition metal layer of rationally designed Na_(0.6)[Ni_(0.3)Ru_(0.3)Mn_(0.4)]O_(2)(NRM)cathode *** incorporation of Ru,Ni,and vacancy enhances the structural stability during extensive cycling,increases the operation voltage,and induces a capacity increase while also activating oxygen redox,respectively,in Na_(0.7)[Ni_(0.2)V_(Ni0.1)Ru_(0.3)Mn_(0.4)]O_(2)(V-NRM)*** analytical techniques including transmission electron microscopy,X-ray absorption near edge spectroscopy,operando X-ray diffraction,and operando differential electrochemical mass spectrometry are employed to assess changes in the average oxidation states and structural *** results demonstrate that V-NRM exhibits higher capacity than NRM and maintains a moderate capacity retention of 81%after 100 ***,the formation of additional lone-pair electrons in the O 2p orbital enables V-NRM to utilize more capacity from the oxygen redox validated by density functional calculation,leading to a widened dominance of the OP4 phase without releasing O_(2) *** findings offer valuable insights for the design of advanced high-capacity cathode materials with improved performance and sustainability in sodium-ion batteries.

关键词： Layered oxide Oxygen evolution Sodium battery Vacancy Cathode

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The CUL3A–LFH1–UBC15 ubiquitin ligase complex mediates SHORT VEGETATIVE PHASE degradation to accelerate flowering at high ambient temperature

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Plant Communications 2024年第4期5卷 224-238页

作者： Suhyun Jin Geummin Youn Sun Young Kim Taewook Kang Hyun-young Shin Ji-Yul jung Pil Joon Seo Ji Hoon Ahn Department of Life Sciences Korea UniversitySeoul 02841Republic of Korea Department of Chemistry Seoul National UniversitySeoul 08826Republic of Korea These authors contributed equally to this article.

Ambient temperature affects flowering time in plants,and the MADS-box transcription factor SHORT VEGETATIVE PHASE(SVP)plays a crucial role in the response to changes in ambient *** protein stability is regulated by the 26S proteasome pathway and decreases at high ambient temperature,but the details of SVP degradation are ***,we show that SVP degradation at high ambient temperature is mediated by the CULLIN3–RING E3 ubiquitin ligase(CRL3)complex in Arabidopsis *** identified a previously uncharacterized protein that interacts with SVP at high ambient temperature and contains a BTB/POZ *** named this protein LATE FLOWERING AT HIGH TEMPERATURE 1(LFH1).Single mutants of LFH1 or CULLIN3A(CUL3A)showed late flowering specifically at 27***1 protein levels increased at high ambient *** found that LFH1 interacts with CUL3A in the cytoplasm and is important for SVP–CUL3A complex *** in CUL3A and/or LFH1 led to increased SVP protein stability at high ambient temperature,suggesting that the CUL3–LFH1 complex functions in SVP *** E2 ubiquitin-conjugating enzymes(UBCs)using RING-BOX PROTEIN 1(RBX1),a component of the CRL3 complex,as bait identified ***15 mutants also showed late flowering at high ambient *** vitro and in vivo ubiquitination assays using recombinant CUL3A,LFH1,RBX1,and UBC15 showed that SVP is highly ubiquitinated in an ATP-dependent ***,these results indicate that the degradation of SVP at high ambient temperature is mediated by a CRL3 complex comprising CUL3A,LFH1,and UBC15.

关键词： temperature-responsiveflowering SVP CUL3 proteasomal degradation ubiquitination

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Effect of the semen extract of Cuscuta chinensis on inflammatory responses in LPS-stimulated BV-2 microglia

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Chinese Journal of Natural Medicines 2014年第8期12卷 573-581页

作者： Seok Yong Kang hyo won jung Mi-Young Lee Hye won Lee Seong Wook Chae Yong-Ki Park Department of Herbology College of Korean Medicine Dongguk University 707 Sekjang-Dong Gyeongju Gyeongsangbuk- Do 780-714 Republic of Korea Korean Medicine R&D Center Dongguk University 707 Sekjang-Dong Gyeongju Gyeongsangbuk-Do 780-714 Republic of Korea Korea Institute of Oriental Medicine 1672 Yuseongdae-ro Yuseong-gu Daejeon 305-811 Republic of Korea

AIM: To investigate the anti-inflammatory activities of the semen extract of Cuscuta chinensis Lam.(Cuscutae Semen; CS) on the production of inflammatory mediators, nitric oxide(NO), prostaglandin 2(PGE2), and proinflammatory cytokines in lipopolysaccharide(LPS)-stimulated BV-2 microglia. METHOD: BV-2 cells were treated with CS extract for 30 min, and then stimulated with LPS or without for 24 h. The levels of NO, PGE2 and proinflammatory cytokines were measured by Griess assay and ELISA. The expression of inducible nitric oxide synthase(iNOS), and cyclooxygenase(COX)-2 mRNA and protein was determined by RT-PCR and Western blot, respectively. The phosphorylation of extracellular signal-regulated kinase 1/2(ERK1/2), Jun N-terminal kinase(JNK), and p38 mitogen-activated protein kinase(MAPK), and the nuclear expression of nuclear factor(NF)-κB p65 were investigated by Western blot analysis. RESULTS: CS extract significantly decreased the production of NO and PGE2 by suppressing the expression of iNOS and COX-2 in activated microglia. CS extract decreased the production of TNF-α, IL-1β, and IL-6 by down-regulating their transcription levels. In addition, CS extract suppressed the phosphorylation of ERK1/2, JNK, and p38 MAPK, and the nuclear translocation of NF-κB p65 in activated microglia. CONCLUSION: These results indicate that CS extract is capable of suppressing the inflammatory response by microglia activation, suggesting that CS extract has potential in the treatment of brain inflammation.

关键词： Cuscuta chinensis Cuscutae Semen Microglia Inflammation NF-κB pathway

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