Article
Chemistry, Physical
Peng Lv, Haiquan Cheng, Chenglong Ji, Wei Wei
Summary: The compressible graphitized-rGO/polyimide aerogel prepared by combining graphitized rGO and polyimide provides continuous heat transport paths and improved thermal conductivity suitable for thermal interface materials. The aerogel has high compressibility and high thermal conductivity, surpassing previously reported carbon-based TIMs.
Article
Polymer Science
Dohun Yoon, Hyunjung Lee, Taehoon Kim, Youngbin Song, Taeyeon Lee, Jongho Lee, Jae Hun Seol
Summary: Due to their remarkable properties, polymers are widely used in industry. However, the low thermal conductivity of polymers poses limitations. In this study, we demonstrate that increasing chain orientation and intermolecular interaction can enhance the thermal conductivity of polyimide (PI). Our results show that electrospun PI nanofibers and hot-pressed nanofibrous PI films have significantly higher thermal conductivity values compared to solution-casting PI films. Molecular-scale structural characterizations reveal the mechanisms behind the improved thermal conductivity.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Materials Science, Composites
Zepeng Chen, Shan Gao, Jingjing Zhang, Daoqing Liu, Jianhui Zeng, Yimin Yao, Jian-Bin Xu, Rong Sun
Summary: As flexible electronic devices become smaller and more powerful, the need for efficient thermal management becomes crucial due to the increased heat generation. However, the low thermal conductivity of flexible substrates poses a challenge for effective heat dissipation. This study successfully fabricated large-area flexible films using electrospinning technique, demonstrating notable thermal conductivity of up to 38.4 Wm-1K-1. At a filler concentration of 50 wt%, the film showed superior performance with a thermal conductivity of 28.6 Wm-1K-1, a tensile strength of 27.8 MPa, and an elongation of 8.1%. Furthermore, the film exhibited exceptional flexibility, meeting the requirements for next-generation flexible substrates.
COMPOSITES COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Bohai Liu, Yu Zhou, Lan Dong, Qinghua Lu, Xiangfan Xu
Summary: Polymers are widely used in modern technology, but their thermal conductivity is often limited. In this study, a copolymerization strategy is introduced to significantly increase the thermal conductivity of polyimide, making it a potential candidate for thermal management. The copolymerized polyimide also shows thermal stability after annealing, indicating its potential in future synthesis of interfacial thermal materials.
Article
Chemistry, Multidisciplinary
So Yoon Lee, Tae-Hwan Huh, Hye Rim Jeong, Young-Je Kwark
Summary: Silver/polyimide (Ag/PI) composite films with enhanced heat dissipation properties were prepared in this study. Ag particles were formed in various locations by reducing AgNO3, and two types of soluble polyimides, Matrimid and HPI, were utilized. The interaction between HPI and Ag ions led to uniform size distribution of Ag particles, affecting heat emission characteristics and improving heat dissipation properties of the composite films.
Article
Chemistry, Physical
Baokang Yu, Jie Fan, Jianxin He, Yong Liu, Rongwu Wang, Kun Qi, PengJu Han, Zhouai Luo
Summary: This study presents a new method for high-yield preparation of boron nitride nanosheets (BNNS) through high-temperature oxidation and hydrothermal exfoliation. Flexible, insulating, and highly thermally conductive BNNS/PI nanocomposite paper was successfully fabricated using this method. The nanocomposite paper exhibited ultrahigh in-plane thermal conductivity and holds great potential for applications in flexible electronic devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Biomedical
Yang Zhang, Lizhen Wang, Yan Wang, Linhao Li, Jin Zhou, Dandan Dou, Zebin Wu, Lu Yu, Yubo Fan
Summary: This study developed PLGA ureteral stents containing silver@graphdiyne through electrospinning, which showed excellent antibacterial properties and moderate biocompatibility, addressing the limitations of traditional stents.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Polymer Science
Zixuan Zheng, Guojie Liang, Li Li, Jing Liu, Xinbo Wang, Yi Sun, Kai Li
Summary: This study proposes an efficient approach for fabricating carbon foam-reinforced carbon aerogel composites. By compounding nanoporous polyimide aerogel with pre-carbonized phenolic resin-based carbon foam, co-shrinkage is achieved during co-carbonization, effectively utilizing the thermal insulation capacity of carbon aerogel and formability of pre-carbonized foam.
Article
Nanoscience & Nanotechnology
Peng Liu, Yingying Luo, Jiaman Liu, Sum Wai Chiang, Dang Wu, Wanyu Dai, Feiyu Kang, Wei Lin, Ching-Ping Wong, Cheng Yang
Summary: The study introduces a low-cost, high-performance porous copper-indium laminar structure as a thermal interface material with superior thermal conductivity and lower Young's modulus, providing better resistance to thermal-mechanical fatigue and exhibiting excellent performance in large die size packaging tests.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Junphil Hwang, Minju Lee, Byung-Kyu Yu, Mi-Kyung Han, Woochul Kim, Jungwon Kim, Rabih Al Rahal Al Orabi, Hongchao Wang, Somnath Acharya, Jiyong Kim, Yingshi Jin, Hwanjoo Park, Sujin Kim, So-Hyeon Yang, Sung-Jin Kim
Summary: A thermoelectric coated grain nanocomposite CuInTe2/SnTe was synthesized with eco-friendly elements, showing promising applications in the industrial field with significantly higher thermoelectric figure of merit.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Nanoscience & Nanotechnology
Pengtu Zhang, Xiaoyun Liu, Peiyuan Zuo, Puke Mi, Qixin Zhuang
Summary: By incorporating p-phenylenediamine-modified and L-ascorbic acid-reduced graphene oxide nanosheets into the polymer matrix, a composite material with significantly improved chemical functionalization and dispersity was obtained. The composite material has a high dielectric constant and breakdown strength, making it suitable for high-dielectric applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Gui Yang, Xiaodong Zhang, Duo Pan, Wei Zhang, Ying Shang, Fengmei Su, Youxin Ji, Chuntai Liu, Changyu Shen
Summary: In this study, highly thermally conductive PVA/BNNS@AgNW composites were fabricated by combining electrospinning and spraying techniques, showing excellent thermal conductivity and electrical insulating properties for potential applications in electrical packaging and thermal management.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Yanping Liu, Yuewen Wu, Shuo Zhao, Xu Wang, Jianliang Zheng, Wenli Zeng, Maoqing Yuan, Na Zhao, Qian Li, Zhen Wang, Nan Tian
Summary: Coaxial fiber membranes (CFMs) with poly(ethylene oxide) (PEO) encapsulated by biobased poly(L-lactic acid) (PLLA) were prepared and their thermal management capacity was investigated. The CFMs showed excellent thermal management capability, with remarkable thermal stability and energy storage observed in CFMs with PEO content of 49 wt %. The insulation efficiency of CFMs could be improved by more than 21% compared to pure PLLA membranes. The heating curves of CFMs were well described by a Fourier equation corrected by the melting enthalpy of PEO, indicating the primary and secondary effects from PEO melting and reduced thermal conductivity of PLLA.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Physical
C. Y. Zhao, Y. B. Tao, Y. S. Yu
Summary: The study shows that nanoparticles can enhance the thermal conductivity of NPCMs, with the enhancement effect increasing with nanoparticle mass fraction and NPCM temperature. Phonon scattering is minimal in nanoparticles, increases rapidly with distance to nanoparticle surface, but remains constant in a nanolayer around the nanoparticle. The existence of this nanolayer reduces phonon scattering and promotes heat transfer, contributing to the enhancement of thermal conductivity in NPCM.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Review
Engineering, Environmental
Zhijian Sun, Jiaxiong Li, Michael Yu, Mohanalingam Kathaperumal, Ching-Ping Wong
Summary: Thermal management is crucial in electronic encapsulation to dissipate heat from high density/high-power integrated circuits. Silver-epoxy nanocomposites, with their high thermal conductivity and resistance to oxidation, are widely used in electronic packaging industries. This mini review provides a comprehensive understanding of the thermal conductivity of epoxy resins based on different silver nanomaterials, as well as the factors influencing the thermal conductivity of silver-epoxy nanocomposites.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.