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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

Genic C-Methylation in Soybean Is Associated with Gene Paralogs Relocated to Transposable Element-Rich Pericentromeres

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Molecular Plant 2018年第3期11卷 485-495页

作者： Moaine El Baidouri Kyung Do Kim Brian Abernathy Ying-Hui Li Li-Juan Qiu Scott A. Jackson Center for Applied Genetic Technologies University of Georgia 111 Riverbend Road Athens GA 30602 USA Corporate R&D LG Chem LG Science Park 30 Magokjungang 10-ro Gangseo-gu Seoul 07796 Republic of Korea The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI) Institute of Crop Science Chinese Academy of Agricultural SciencesBeijing China These authors contributed equally to this article.

Most plants are polyploid due to whole-genome duplications （WGD） and can thus have duplicated genes. Following a WGD, paralogs are often fractionated （lost） and few duplicate pairs remain. Little attention has been paid to the role of DNA methylation in the functional divergence of paralogous genes. Using high- resolution methylation maps of accessions of domesticated and wild soybean, we show that in soybean, a recent paleopolyploid with many paralogs, DNA methylation likely contributed to the elimination of ge- netic redundancy of polyploidy-derived gene paralogs. Transcriptionally silenced paralogs exhibit partic- ular genomic features as they are often associated with proximal transposable elements （TEs） and are pref- erentially located in pericentromeres, likely due to gene movement during evolution. Additionally, we provide evidence that gene methylation associated with proximal TEs is implicated in the divergence of expression profiles between orthologous genes of wild and domesticated soybean, and within populations.

关键词： soybean paralog gene methylation proximal transposable element methylation spreading

A systematic correlation between morphology of porous carbon cathode and electrolyte in lithium-sulfur battery

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Journal of Energy chemistry 2021年第10期30卷 561-573,I0014页

作者： Jihyeon Park Seoyoung Yoon Seoyeah Oh Jiyoon Kim Dongjun Kim Geonho Kim Jiyeon Lee Myeong Jun Song Ilto Kim Kwonnam Sohn Jiwon Kim School of Integrated Technology College of EngineeringYonsei University85 Songdogwahak-roYeonsu-guIncheon 21983Republic of Korea Integrated Science and Engineering Division Underwood International CollegeYonsei University85 Songdogwahak-roYeonsu-guIncheon 21983Republic of Korea Integrated Biotechnology and Translational Medicine Graduate SchoolYonsei University85 Songdogwahak-roYeonsu-guIncheon 21983Republic of Korea lg chem. LG Science Park30 Magokjungang 10-roGangseo-guSeoul 07796Republic of Korea

Porous carbon has been applied for lithium-sulfur battery cathodes,and carbonized metal-organic framework(MOF)is advantageous in tuning the ***,we have systematically synthesized water-distorted MOF(WDM)derived porous carbon via controlling the proportion of both water in a mixed solvent(dimethylformamide and water)and ligand in MOF-5 precursors(metal and ligand),which is categorized by its morphology(*** stone(closed),Tassel(open)and Intermediate(semi-open)).For example,decrease in water and increase in ligand content induce Cracked stone WDMs which showed the highest specific surface area(2742-2990 m^(2)/g)and pore volume(2.81-3.28 cm^(3)/g)after *** effect of carbonized WDMs(CWDMs)on battery performance was examined by introducing electrolytes with different sulfur reduction mechanisms(***/DME and ACN_(2) LiTFSITTE):Closed framework effectively confines polysulfide,whereas open framework enhances electrolyte *** initial capacities of the batteries were in the following order:Cracked stone>Intermediate>Tassel for DOL/DME and Intermediate>Tassel>Cracked stone for ACN_(2) *** note,Intermediate CWDM exhibited the highest initial capacity and retained capacity after 100 cycles(1398 and 747 mAh/g)in ACN_(2) LiTFSI-TTE electrolyte having advantages from both open and closed *** sum,we could correlate cathode morphology(openness and pore structure)and electrolyte type(*** solubility)with lithium-sulfur battery performance.

关键词： Lithium-sulfur battery Metal-organic framework Hierarchical porous carbon cathode Morphology control Electrolyte Lithium polysulfide solubility

Scheduling of Logistics for Polarizer Manufacturing

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Scheduling of Logistics for Polarizer Manufacturing

STUDIES　ON　CHIRAL　THIOPHOSPHORIC　ACIDS　AND　THEIR　DERIVATIVES　***　ASYMMETRIC　CYCLIZATION　OF　（＋）－SUBSTITUTED　CYCLOPENTANODIAMINE　WITH　O－ARYL　THIOPHOSPHOROCHLORIDATES

The 12th Asian Pacific Confederation of chemical Engineering Congress

作者： Kyung Tae Park Jun-Hyung Ryu Ho-Kyung Lee In-Beum Lee Department of chemical Engineering PostechPohangKorca lg chem Ltd./ Research ParkDeajeonSouth Korea Department of chemical Engineering PostcchPohangKorca

This paper presents a scheduling model for logistics of *** production can be divided into front-end and back-end *** the front-end process is mainly located in technical oriented sites,the back-end is located in sites where cheaper labor is *** front- end process produces intermediate *** completion of the front-end process,intermediate films are then transferred to the back-end *** back-end process produces finished Polar- izer using intermediate films.

关键词： polarizer core scenario-based approach

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Chinese chemical Letters 1996年第3期7卷 205-206页

作者： Tang, CC Lang, HF Wu, lg He, ZJ Chen, RY NANKAI UNIV INST ELEMENTOORGAN CHEMTIANJIN 300071PEOPLES R CHINA

The cyclizations of (+) -cis-1, 2, 2-trimethyl-l,3-diaminocyclopentrie 1derived from D-camphor with O-arylthiophosphorochloridates 2 give products, (+)-2,4,3-diazaphospha-bicyclo [3,2, 1] octane 3, containing two unequal amounts of diastereoisomers,a pair of which (R=OEt) has been successfully separated by silica gel columnchromatography.

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韩国lg化学悬浮法聚氯乙烯生产技术的特点

聚氯乙烯 2001年第2期29卷 17-19页

作者：黄国强姜军李英竹天津大学化工研究所天津300072 天津lg大沽化学有限公司天津300455

lg化学生产悬浮法聚氯乙烯采用 70 m3细长型聚合釜 ,生产强度可达 3 0 0 t/ (m3· a)以上 ;采用三叶后掠式和底伸式的搅拌装置 ,转速为 60～ 1 4 0 r/ min,无级可调 ,搅拌电机功率额定为 1 50 k W,双机械密封 ;使用气柜回收未反应单体 ... 详细信息

lg化学生产悬浮法聚氯乙烯采用 70 m3细长型聚合釜 ,生产强度可达 3 0 0 t/ (m3· a)以上 ;采用三叶后掠式和底伸式的搅拌装置 ,转速为 60～ 1 4 0 r/ min,无级可调 ,搅拌电机功率额定为 1 50 k W,双机械密封 ;使用气柜回收未反应单体 ,用节能型带内热管的多室卧式流化床干燥器 (以热风和热水为干燥热源 ) ;全过程采用集散控制系统 (DCS)控制、监测和生产调度管理 ;韩国 lg化学技术综合能耗稍次于美国 EVC技术 ,优于国内传统技术。

关键词：聚氯乙烯悬浮聚合法三叶后掠式底伸式搅拌装置

Visible-light photocatalytic H_2 evolution over a series of transition metal substituted Keggin-structure heteropoly blues

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Chinese Science Bulletin 2012年第18期57卷 2265-2268页

作者： ZhenLi Wang Ying Lu YangGuang Li ShiMing Wang EnBo Wang NE Normal Univ Dept Chem Minist Educ Key Lab Polyoxometalate Sci Changchun 130024 Peoples R China

The visible light photocatalytic H 2 evolution activities of a series of transition-metal substituted Keggin-structure heteropoly blues K 6 SiW 11 O 39 M(H 2 O)·nH 2 O (M=Co,Ni,Cu and Zn) were systematically studied with Pt nanoparticles as *** H 2 evolution rates were 150,98,65 and 48 mol h-1g-1 for SiW 11 Cu,SiW 11 Ni,SiW 11 Co and SiW 11 Zn,respectively,meaning that the order of photocatalytic activity of these heteropoly blues from transition-metal substituted polyoxometalates was:SiW 11 Cu > SiW 11 Ni > SiW 11 Co > SiW 11 *** catalysts could be efficiently reused for at least 5 cycles.

关键词： Keggin结构光催化活性过渡金属进化速率杂多蓝可见光氢气多金属氧酸盐

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双向拉伸聚乳酸薄膜的制备

合成树脂及塑料 2017年第1期34卷 36-40页

作者：罗焯欣董月平 lg化学(中国)投资有限公司华南技术中心广东省广州市510530

以国产聚乳酸(PLA)和进口PLA为原料,进行双向拉伸PLA(BOPLA)薄膜的中试生产,研究了PLA干燥条件、PLA拉伸前后的性能变化,以及工艺参数对BOPLA薄膜性能的影响,并摸索BOPLA薄膜的最佳成型工艺条件。结果表明:PLA的最佳干燥条件是80℃干燥5... 详细信息

以国产聚乳酸(PLA)和进口PLA为原料,进行双向拉伸PLA(BOPLA)薄膜的中试生产,研究了PLA干燥条件、PLA拉伸前后的性能变化,以及工艺参数对BOPLA薄膜性能的影响,并摸索BOPLA薄膜的最佳成型工艺条件。结果表明:PLA的最佳干燥条件是80℃干燥5 h;当温度升高时,经过拉伸的PLA厚片比未拉伸的PLA厚片更容易结晶。BOPLA薄膜成型的最佳工艺参数为:铸片辊温度20～25℃;纵向拉伸时,预热区温度40～75℃,拉伸区温度60～70℃,定型区温度20～30℃;横向拉伸时,预热区温度50～120℃,拉伸区温度60～130℃,定型区温度110～160℃;纵、横向拉伸比为3.0×3.0。

关键词：聚乳酸双向拉伸薄膜相对分子质量水分

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异常钙钛矿氧化物结构规律研究

异常钙钛矿氧化物结构规律研究

Super-elastic and mechanically durable MXene-based nanocomposite aerogels enabled by interfacial engineering with dual crosslinking strategy

中国化学会第七届全国结构化学学术会议

作者： Man-Rong Li Seung-Tae Hong David Walker Martha Greenblatt MOE Key Laboratory of Bioinorganic and Synthetic chemistry School of ChemistrySun Yat-sen University CR&D LG Chem Research Park Lamont Doherty Earth Observatory Columbia University

多功能钙钛矿氧化物因其多样性的结构和优异的物化性能,日益成为结构化学和材料科学领域的研究热点。常见的材料是ABO3型简单钙钛矿和ABB’O6型双钙钛矿,其结构和成相规律已广为研究,理想情况下A位为12配位的较大离子而B/B’位为6(八面...

多功能钙钛矿氧化物因其多样性的结构和优异的物化性能,日益成为结构化学和材料科学领域的研究热点。常见的材料是ABO3型简单钙钛矿和ABB’O6型双钙钛矿,其结构和成相规律已广为研究,理想情况下A位为12配位的较大离子而B/B’位为6(八面体)配位的小离子。随着A位离子变小,其结构随容忍因子(Tolerance factor,t)降低而发生畸变,对称性依次从六角变为立方、四方、菱方、单斜等。当A位和

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Nano Research 2023年第5期16卷 8025-8035页

作者： Yan Sun Xin Yang Ruonan Ding Sung Yong Hong Jinwoo Lee Zongfu An Mei Wang Yifei Ma Jae-Do Nam Jonghwan Suhr China Copper Institute of Engineering and Technology Chinalco Research Institute of Science and Technology Co.Ltd.Beijing 102200China Center for Composite Materials and Concurrent Design Sungkyunkwan UniversitySuwon 16419Republic of Korea Key Laboratory for Light-weight Materials Nanjing Tech UniversityNanjing 210009China Department of Energy Science Sungkyunkwan UniversitySuwon 16419Republic of Korea MPP PJT.PO R&D Center Polyolefin Business Petrochemicals DivisionLG ChemDaejeon 34122Republic of Korea Department of Polymer Science and Engineering Sungkyunkwan UniversitySuwon 16419Republic of Korea School of chemical Engineering Sungkyunkwan UniversitySuwon 16419Republic of Korea State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Laser SpectroscopyCollaborative Innovation Center of Extreme OpticsShanxi UniversityTaiyuan 030006China School of Mechanical Engineering Sungkyunkwan UniversitySuwon 16419Republic of Korea

Recently,MXenes have attracted considerable attention owing to their unique physical and chemical *** of MXenes to three-dimensional(3D)porous aerogel structures can play a critical role in realizing the profound implications of MXenes,especially for environmental ***,developing mechanically robust MXene-based aerogels with reversible compressibility under harsh conditions,such as liquid environments,remains challenging due to the insufficient interfacial strength between MXene ***,3D porous MXene-based nanocomposite aerogels are developed by dual physical and chemical crosslinking strategy with poly(vinyl alcohol)and formaldehyde in this *** developed MXenebased nanocomposite aerogels with designed interfacial engineering exhibit outstanding structural stability and extremely high reversible compressibility up to 98%strain as well as unprecedented mechanical durability(2000 cycles at 50%strain)in water ***,the aerogels show adaptable compressibility when exposed to different solvents,which is explained with the Hansen solubility *** to their high compressibility in water,the robust MXene-based aerogels exhibit excellent methylene blue adsorption performance(adsorption capacity of 117.87 mg·g^(−1))and superior recycling efficiency(89.48%at the 3rd cycle).The porous MXene-based nanocomposite aerogels are also demonstrated with outstanding thermal insulation ***,by synergistically taking their porous structure and super elasticity in liquid environment,the MXene-based aerogels show great promise in diverse applications including adsorption and separation,wastewater purification desalination,and thermal management.

关键词： MXenes-based nanocomposite aerogels dual crosslinking strategy reversible compressibility methylene blue adsorption thermal insulation