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Nanoconfinement effect of nanoporous carbon electrodes for ionic liquid-based aluminum metal anode

Journal of Energy Chemistry 2022年第11期31卷 121-127,I0005页

作者： Juhee Yoon Seongbak Moon Son Ha Hyung-Kyu Lim Hyoung-Joon Jin Young Soo Yun Program in Environmental and Polymer Engineering Inha UniversityIncheon 22212South Korea Department of Polymer Science and Engineering Inha UniversityIncheon 22212South Korea KU-KIST Graduate School of Converging Science and Technology Korea UniversitySeoul 02841South Korea Division of Chemical Engineering and Bioengineering Kangwon National UniversityGangwon-do 24341South Korea Department of Integrative Energy Engineering Korea UniversitySeoul 02841South Korea

Rechargeable aluminum batteries(RABs),which use earth-abundant and high-volumetric-capacity metal anodes(8040 m Ah cm-3),have great potential as next-generation power sources because they use cheaper resources to deliver higher energies,compared to current lithium ion ***,the mechanism of charge delivery in the newly developed,ionic liquid-based electrolytic system for RABs differs from that in conventional organic ***,targeted research efforts are required to address the large overpotentials and cycling decay encountered in the ionic liquid-based electrolytic *** this study,a nanoporous carbon(NPC)electrode with well-developed nanopores is used to develop a high-performance aluminum *** negatively charged nanopores can provide quenched dynamics of electrolyte molecules in the aluminum deposition process,resulting in an increased collision *** fast chemical equilibrium of anionic species induced by the facilitated anionic collisions leads to more favorable reduction reactions that form aluminum *** nanoconfinement effect causes separated nucleation and growth of aluminum nanoparticles in the multiple confined nanopores,leading to higher coulombic efficiencies and more stable cycling performance compared with macroporous carbon black and 2D stainless steel electrodes.

关键词： Nanoconfinement effect Nanoporous carbon Ionic liquid electrolyte Metal anode Aluminum batteries Multivalent batteries

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Dense carbon nanofiber self-supporting electrode fabricated by orientation/compaction strategy for high volumetric lithium storage capacity

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Progress in Natural science:Materials International 2025年第1期35卷 229-237页

作者： Haihui Liu Chaoqun Chen Qiang Xu Yan Song Xiangwu Zhang Chang Ma Tianjin Municipal Key Lab of Advanced Fiber and Energy Storage Technology Tiangong University CAS Key Laboratory of Carbon Materials Institute of Coal Chemistry Chinese Academy of Sciences Fiber and Polymer Science Program Department of Textile Engineering Chemistry and Science Wilson College of Textiles North Carolina State University

Low bulk density greatly restricts the large-scale application of electrospun carbon-based fiber membrane as electrode in energy storage devices. To solve the above challenges, herein an orientation-compaction densification strategy is proposed to enhance the bulk density and volumetric capacity of PAN-based carbon nanofiber membranes as self-supporting electrode used in lithium-ion batteries（LIBs）. Specifically, highly-oriented fibers are achieved by high-speed roller collecting during electrospinning, and compaction densification is conducted by hot-pressing treatment. The effects of collecting speed and hot-pressing pressure on the morphology, conductivity,bulk density, tensile strength, and flexibility of the obtained carbon nanofiber membrane are *** to conventional fiber membranes, of which fibers are disorderly stacked, the oriented fiber membrane is much easier to achieve dense stacking by compaction. The obtained dense carbon nanofiber membrane demonstrates a bulk density of 0.566 g cm-3, and shows a significantly-enhanced volumetric capacity(318.3 mA h cm-3), high-rate performance(86.6 mA h cm-3at 5 A g-1), and satisfactory cycling stability when used as selfsupporting electrode of LIBs.

关键词： Bulk density Densification Electrospinning Orientation-compaction Volumetric capacity

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Bio-inspired Smart Composites with Multi-scale Architecture and Surface engineering 23

Bio-inspired Smart Composites with Multi-scale Architecture ...

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23rd International Conference on Composite Materials, ICCM 2023

作者： Zeng, Songshan Shen, Kuangyu Li, Rui Smith, Andrew Zhang, Dianyun Sun, Luyi Polymer Program Institute of Materials Science Department of Chemical & Biomolecular Engineering University of Connecticut United States

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Polyacrylonitrile Nanofber‑Reinforced Flexible Single‑Ion Conducting polymer Electrolyte for High‑Performance,Room‑Temperature All‑Solid‑State Li‑Metal Batteries

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Advanced Fiber Materials 2022年第3期4卷 532-546页

作者： Hui Cheng Chaoyi Yan Raphael Orenstein Mahmut Dirican Shuzhen Wei Nakarin Subjalearndee Xiangwu Zhang Fiber and Polymer Science Program Department of Textile EngineeringChemistry and ScienceWilson College of TextilesNorth Carolina State UniversityRaleighNC 27695USA

Single-ion conducting polymer electrolytes(SIPEs)can be formed by anchoring charge delocalized anions on the side chains of a crosslinked polymer matrix,thereby eliminating the severe concentration polarization efect in conventional dual-ion polymer *** of a plasticizer into the polymer matrix confers advantages of both liquid and solid ***,plasticized SIPEs usually face a trade-of between conductivity and mechanical *** insufcient strength,potentially there is short-circuiting failure during *** address this challenge,a simple and mechanicallyrobust SIPE was developed by crosslinking monomer lithium(4-styrenesulfonyl)(trifuoromethylsulfonyl)imide(LiSTFSI)and crosslinker poly(ethylene glycol)diacrylate(PEGDA),with plasticizer propylene carbonate(PC),on electrospun polyacrylonitrile nanofbers(PAN-NFs).The well-fabricated polymer matrix provided fast and efective Li^(+) conductive pathways with a remarkable ionic conductivity of 8.09×10^(-4) S cm^(−1) and a superior lithium-ion transference number close to unity(t_(Li+)=0.92).The introduction of PAN-NFs not only improved the mechanical strength and fexibility but also endowed the plasticized SIPE with a wide electrochemical stability window(4.9 V ***^(+)/Li)and better cycling *** longterm lithium cycling stability and dynamic interfacial compatibility were demonstrated by lithium symmetric cell *** importantly,the assembled all-solid-state Li metal batteries showed stable cycling performance and remarkable rate capability both in low and high current ***,this straightforward and mechanically reinforced SIPE exhibits great potential in the development of advanced all-solid-state Li-metal batteries.

关键词： Single-ion conducting polymer electrolyte Electrospun nanofbers Mechanical properties All-solid-state batteries Rate capability

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Approach for enhancing sensitivity of tin-oxo cluster resist for high NA extreme UV lithography 41

Approach for enhancing sensitivity of tin-oxo cluster resist...

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Advances in Patterning Materials and Processes XLI 2024

作者： Ku, Yejin Kim, Gayoung Kim, Min Seung Lee, Jin-Kyun Kim, Jiho Park, Byeong-Gyu Lee, Sangsul Lee, Seohyeon Jung, Byung Jun Lee, Changhyeon Kim, Hyunseok Hur, Su-Mi Koh, Chawon Nishi, Tsunehiro Kim, Hyun-Woo Program in Environment and Polymer Engineering Inha University Incheon22212 Korea Republic of Department of Polymer Science and Engineering Inha University Incheon22212 Korea Republic of Pohang Accelerator Laboratory Postech Pohang37673 Korea Republic of Department of Materials Science and Engineering University of Seoul Seoul02504 Korea Republic of Department of Polymer Engineering Graduate School Chonnam National University Gwangju61186 Korea Republic of School of Polymer Science and Engineering Chonnam National University Gwangju61186 Korea Republic of Department of Materials Science and Engineering Yonsei University Seoul03722 Korea Republic of Samsung Electronics Co. Ltd. Semiconductor R&d Center Gyeonggi-do 18448 Korea Republic of

ISBN: (纸本)9781510672208

High numerical aperture (NA) EUV lithography is considered as the most-promising candidate for next generation lithography protocol that will play a crucial role in meeting the demand on the enhanced semiconductor performance and productivity. While this technology enables the fabrication of sub-10 nm patterns, the increased NA has posed challenges, such as reduced depth of focus and narrower process margins. To overcome these hurdles, it is essential to apply thinner resist films while ensuring that the resulting small patterns maintain sufficient physical and chemical durability. Moreover, considering that thinner films absorb fewer photons, the resist molecular structure should be designed to compensate sensitivity burdens. Here, an approach has been proposed to enhance sensitivity by accelerating the solubility change of a well-known tinbased nanocluster resist. To accomplish this goal, it is important to increase not only the number of secondary electrons but also reaction sites and promote radical-based chemical reactions. We aimed at experimentally validating this concept by utilizing elements with high EUV absorbance and highly reactive functional groups with tin radicals. As a model resist, we chose a tin-oxo cage material consisting of a divalent cation containing 12 tin atoms and two counter anions. Our findings indicate that the introduction of unsaturated groups capable of building bridging bonds with radicals leads to fast solubility change at a lower exposure dose, thus enhancing sensitivity. This research offers a promising direction for the development of resists tailored for High NA EUV lithography. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Tin

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High-performance solid-solution potassium-ion intercalation mechanism of multilayered turbostratic graphene nanosheets

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Journal of Energy Chemistry 2022年第4期31卷 814-823页

作者： Jiae Um Seung Uk Yoon Hoseong Kim Beom Sik Youn Hyoung-Joon Jin Hyung-Kyu Lim Young Soo Yun Program in Environmental and Polymer Engineering Inha Universityncheon 22212 South Korea Department of Polymer Science and Engineering Inha UniversityIncheon 22212South Korea Division of Chemical Engineering and Bioengineering Kangwon National University Chuncheon Gangwon-do 24341 South Korea KU-KIST Graduate School of Converging Science and Technologyea University 145 Anam-roSeongbuk-guSoul02841 South Korea Department of Integrative Energy Engineering 145 Anam-roSongbuk-guKorea UniversitySeoul 02841 South Korea

The solid-solution reaction between an alkali cation and an active host material is known as a singlephase redox mechanism,and it is typically accompanied by a continuous voltage *** is distinct from the typical alkali cation intercalation reaction at an equivalent site of the active host material,which exhibits a voltage ***,we report an unusual solid-solution potassium-ion intercalation mechanism with a low-voltage plateau capacity on multilayered turbostratic graphene nanosheets(T-GNSs).Despite the disordered graphitic structure with a broad range of d-spacings(3.65–4.18À),the T-GNSs showed a reversible plateau capacity of~200 m A h g^(-1),which is higher than that of a well-ordered graphite nanoplate(~120 m A h g^(-1)).In addition,a sloping capacity of~220 m A h g^(-1)was delivered with the plateau capacity,and higher rate capabilities,better reversibility,and a more stable cycling performance were confirmed on the turbostratic ***-principles calculations suggest that the multitudinous lattice domains of the T-GNSs contain diverse intercalation sites with strong binding energies,which could be the origin of the high-performance solid-solution potassium-ion intercalation behavior when the turbostratic graphene stacks have a d-spacing smaller than that of equilibrium potassium–graphite intercalation compounds(5.35À).

关键词： Turbostratic graphite Graphene nanosheet Defective carbon Anode Potassium-ion batteries

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Iodinated underlayer for enhanced chemically amplified resist performance 42

Iodinated underlayer for enhanced chemically amplified resis...

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Advances in Patterning Materials and Processes XLII

作者： Ku, Yejin Choi, Hyoeun Kim, Gayoung Lee, Jin-Kyun Kim, Jiho Lee, Sangsul Program in Environment and Polymer Engineering Inha University Incheon22212 Korea Republic of Department of Polymer Science and Engineering Inha University Incheon22212 Korea Republic of Program in Semiconductor Convergence Inha University Incheon22212 Korea Republic of Pohang Accelerator Laboratory POSTECH Pohang37673 Korea Republic of

ISBN: (纸本)9781510686427

High-numerical-aperture (NA) extreme ultraviolet lithography (EUVL) is essential for next-generation semiconductor manufacturing, requiring advanced photoresists (PRs) that can function effectively in ultra-thin films. However, ultra-thin PR films-primarily needed to meet stringent depth-of-focus constraints-face several challenges, including low photon absorption and reduced etch resistance. Additionally, as feature sizes shrink, the diminished PR-substrate contact area exacerbates pattern collapse issues in high NA EUVL. To mitigate these challenges, underlayers are increasingly employed to enhance patterning performance. In this study, we propose a supportive underlayer (SUL) to enhance the sensitivity of chemically-amplified photoresists (CARs) and improve adhesion between the CAR film and the SUL. As a preliminary step, we introduced a simple experimental protocol to identify high-absorption elements that could be more effective in the CAR system, exploiting a PR film-overcoat bi-layer structure. Overcoats containing hydrogen (H), iodine (I), and tin (Sn) were readily prepared on top of the CAR film by the help of solvent orthogonality. Our findings revealed that iodine atoms significantly reduced the exposure threshold compared to hydrogen or tin. Based on these results, hydrophobic iodinated materials were selected as SUL candidates, and a few materials were synthesized with different iodine contents. After fabricating the bi-layer stack, we evaluated the solubility changes of PR films under both positive- and negative-tone development (PTD and NTD) conditions. The incorporation of an iodinated SUL beneath the CAR films enhanced both lithographic sensitivity and substrate adhesion, regardless of the development type, with higher iodine content further amplifying these effects. These findings provide a promising pathway for implementing EUV underlayers specifically tailored for high-NA EUVL. © 2025 SPIE.

关键词： Extreme ultraviolet lithography

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Fire-retardant, anti-dripping, biodegradable and biobased polyurethane elastomers enabled by hydrogen-bonding with cellulose nanocrystals

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Nano Research 2024年第3期17卷 2186-2194页

作者： Yijiao Xue Tianchen Zhang Hong Peng Zhewen Ma Meng Zhang Mark Lynch Toan Dinh Zhezhe Zhou Yonghong Zhou Pingan Song Institute of Chemical Industry of Forest Products Chinese Academy of Forestry(CAF)Nanjing 210042China School of Chemical Engineering The University of QueenslandBrisbaneQld 4072Australia Department of Polymer Materials School of Materials Science and EngineeringTongji UniversityShanghai 201804China School of Agriculture and Environmental Science University of Southern QueenslandToowoombaQld 4300Australia Centre for Future Materials University of Southern QueenslandToowoombaQld 4300Australia

Thermoplastic polyurethane(PU)elastomers have attracted significant attention because of their many important industrial ***,the creation of fire-retardant and anti-dripping PU elastomers has remained a grant challenge due to the lack of crosslinking and weak interchain ***,we report a mechanically robust,biodegradable,fire-retardant,and anti-dripping biobased PU elastomer with excellent biodegradability using an abietic acid-based compound as hard segments and polycaprolactone diol(PCL)as soft segments,followed by physically crosslinking with cellulose nanocrystals(CNC)through dynamic *** resultant elastomer shows the balanced mechanical and fire-retardant properties,e.g.,a tensile strength and break strain of 9.1 MPa and 560%,a self-extinguishing ability(V-0 rating in UL-94 testing),and an anti-dripping ***,the as-developed PU can be completely degraded in 1.0 wt.%lipase solution at 37℃ in 60 days,arising from the catalytic and wicking effect of CNC on PU *** work provides an innovative and versatile strategy for constructing robust,fire-retardant,anti-dripping,and biodegradable PU elastomers,which hold great promise for practical applications in electronic and automobile sectors.

关键词： polyurethane elastomers cellulose nanocrystals fire retardancy anti-dripping biodegradation

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Green Fabrication of Underwater Superoleophobic Biopolymeric Nanofibrous Membranes for Effective Oil-Water Separation

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Advanced Fiber Materials 2023年第2期5卷 603-616页

作者： Subin Oh Junsik Bang Hyoung‑Joon Jin Hyo Won Kwak Program in Environmental and Polymer Engineering Inha University100 Inha‑RoMichuhol‑GuIncheon 22212South Korea Department of Agriculture Forestry and BioresourcesCollege of Agriculture and Life SciencesSeoul National University1 Gwanak‑RoGwanak‑GuSeoul 08826South Korea Department of Polymer Science and Engineering Inha University100 Inha‑RoMichuhol‑GuIncheon 22212South Korea Research Institute of Agriculture and Life Sciences Seoul National University1 Gwanak‑RoGwanak‑GuSeoul 08826South Korea

Currently,most of the materials for oil-water separation membranes are limited to fluorine-based polymers with low surface ***,it is not biodegradable and requires large amounts of organic and toxic solvents in the membrane manufacturing ***,interest in the development of a new eco-friendly oil-water separation membrane that does not cause secondary pollution and exhibits selective wettability characteristics in water or oil is *** biopolymeric nanofibrous membranes inspired by fish skin can provide specific underwater oleophobicity,which is effective for excellent oil-water separation efficiency and prevention of secondary *** gelatin,which is highly soluble in water and has a low gelation temperature,can be electrospun in an aqueous solution and has the same polar functional groups as the hydrophilic mucilage of fish *** addition,the micro/nanostructure of fish skin,which induces superoleophobicity in water,introduces a bead-on-string structure using the Rayleigh instability of *** solubility of fish gelatin in water was removed using an eco-friendly crosslinking method using reducing *** skin-mimicking materials successfully separated suspended oil and emulsified oil,with a maximum flux of 2086 Lm^(−2) h^(−1) and a separation efficiency of more than 99%.The proposed biopolymeric nanofibrous membranes use fish gelatin,which can be extracted from fish waste and has excellent biodegradability with excellent oil-water separation *** addition,polymer material processing,including membrane manufacturing and crosslinking,can be realized through eco-friendly ***,fish skin-inspired biopolymeric membrane is expected to be a promising candidate for a sustainable and effective oil-water separation membrane in the future.

关键词： Fish gelatin Nanofibrous membrane Superoleophobicity Superhydrophilicity Oil/water separation

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Wood-derived freestanding integrated electrode with robust interface-coupling effect boosted bifunctionality for rechargeable zinc-air batteries

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Green Energy & Environment 2024年第12期9卷 1835-1846页

作者： Benji Zhou Nengneng Xu Liangcai Wu Dongqing Cai Eileen HYu Jinli Qiao State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Environmental Science and EngineeringDonghua University2999 Ren'min North RoadShanghai201620China College of Science Donghua University2999 Ren'min North RoadShanghai201620China Shanghai Institute of Pollution Control and Ecological Security 1515 North Zhongshan RoadShanghai200092China Department of Chemical Engineering Loughborough UniversityLoughboroughLE113TUUK

Fabricating non-noble metal-based carbon air electrodes with highly efficient bifunctionality is big challenge owing to the sluggish kinetics of oxygen reduction/evolution reaction(ORR/OER).The efficient cathode catalyst is urgently needed to further improve the performance of rechargeable zinc-air ***,an activation-doping assisted interface modification strategy is demonstrated based on freestanding integrated carbon composite(CoNiLDH@NPC)composed of wood-based N and P doped active carbon(NPC)and CoNi layer double hydroxides(CoNiLDH).In the light of its large specific surface area and unique defective structure,CoNiLDH@NPC with strong interfacecoupling effect in 2D-3D micro-nanostructure exhibits outstanding *** carbon composites show half-wave potential of 0.85 V for ORR,overpotential of 320 mV with current density of 10 mA cm^(-2) for OER,and ultra-low gap of 0.70 ***,highly-ordered open channels of wood provide enormous space to form abundant triple-phase boundary for accelerating the catalytic ***,zinc-air batteries using CoNiLDH@NPC show high power density(aqueous:263 mW cm^(-2),quasi-solid-state:65.8 mW cm^(-2))and long-term stability(aqueous:500 h,quasi-solid-state:120 h).This integrated protocol opens a new avenue for the rational design of efficient freestanding air electrode from biomass resources.

关键词： Wood biomass Bifunctional air electrode Freestanding carbon composite Interface-coupling effect Zinc-air battery

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