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Meso-porous silicon-coated carbon nanotube as an anode for lithium-ion battery

Nano Research 2016年第7期9卷 2174-2181页

作者： Won-Sik Kim jonghyun choi Seong-Hyeon Hong Department of Materials Science and Engineering and Research Institute of Advanced Materials Seoul National University Seoul 151-744 Republic of Korea

Meso-porous Si-coated carbon nanotube （CNT） composite powders were prepared by combining a sol-gel method and the magnesiothermic reduction process. Meso-porous Si-coated CNT electrodes exhibit excellent cycle and rate performances as anodes in Li-ion batteries （LIBs）, which can be attributed to the efficient accommodation of volume change from meso-porous Si structure and the enhanced electrical conductivity from CNT core. This simple synthesis and subsequent reduction process provide a scalable route for the large-scale production of Si-C composite nanostructures, which can be utilized in a variety of applications, such as in photocatalysis, photoelectrochemical cells （PECs）, and LIBs.

关键词： meso-porous carbon nanotube (CNT) magnesiothermic reduction battery

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Uniaxially crumpled graphene as a platform for guided myotube formation

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Microsystems & Nanoengineering 2019年第1期5卷 144-153页

作者： Junghoon Kim Juyoung Leem Hong Nam Kim Pilgyu Kang jonghyun choi Md Farhadul Haque Daeshik Kang SungWoo Nam Department of Mechanical Science and Engineering University of Illinois at Urbana-ChampaignUrbanaIL 61801USA Center for BioMicrosystems Brain Science InstituteKorea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea Division of Bio-Medical Science and Technology KIST SchoolKorea University of Science and TechnologySeoul 02792Republic of Korea Department of Mechanical Engineering George Mason UniversityFairfaxVA 22030USA Department of Mechanical Engineering Ajou UniversitySuwon 16499Republic of Korea Department of Materials Science and Engineering University of Illinois at Urbana-ChampaignUrbanaIL 61801USA

Graphene,owing to its inherent chemical inertness,biocompatibility,and mechanical flexibility,has great potential in guiding cell behaviors such as adhesion and ***,due to the two-dimensional(2D)nature of graphene,the microfabrication of graphene into micro/nanoscale patterns has been widely adopted for guiding cellular *** this study,we report crumpled graphene,i.e.,monolithically defined graphene with a nanoscale wavy surface texture,as a tissue engineering platform that can efficiently promote aligned C2C12 mouse myoblast cell *** imparted out-of-plane,nanoscale crumpled morphologies to flat graphene via compressive straininduced *** C2C12 mouse myoblast cells were seeded on the uniaxially crumpled graphene,not only were the alignment and elongation promoted at a single-cell level but also the differentiation and maturation of myotubes were enhanced compared to that on flat *** results demonstrate the utility of the crumpled graphene platform for tissue engineering and regenerative medicine for skeletal muscle tissues.

关键词： Uniaxial graphene alignment

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