演讲嘉宾-王斌

王斌
国家纳米科学中心,研究员,博士生导师
  王斌,国家纳米科学中心,研究员,博士生导师。主要从事多维纳米碳及复合材料的电化学与力学性质性能方面的研究工作。2014年博士毕业于国家纳米科学中心智林杰研究员课题组,2014至2019年相继在韩国基础科学研究所多维碳材料中心Rodney S. Ruoff 教授和澳大利亚新南威尔士大学戴黎明教授课题组做博士后研究。目前获得授权中国专利 7 项,发表论文60余篇,被引用4500余次,H因子36。
演讲题目:Assembly of CVD Graphene and Mechanical Properties
主题会场
开始时间
结束时间
内容摘要

On the basis of CVD techniques that can produce large-area, high-quality, and crystallinity-controlled graphene samples, we studied their deformation by stretching, folding, and stacking, and the related mechanical properties. Specifically, 1) we developed a camphor-assisted method to free-stand centimeter-long ultrathin films and do tensile test.[1] By involving CVD monolayer graphene, the results showed that the Young’s modulus of centimeter-long monolayer graphene was around 700 GPa and the fracture strength was 3~5 GPa, far lower than the values of ~100 GPa for the micron sized graphene; 2) A centimeter-sized monolayer graphene film was folded to get a bilayer graphene film that has tunable interlayer twist; [2] 3) A folding method was used to assemble a laminated composite that has rich graphene folds. From the bending tests and modeling, it was found that the graphene folds reinforced the composite; [3] 4) A stacking method was used to assemble 100 layers of monolayer CVD graphene films to get a new carbon material that has low defect density, pure carbon content, highly ordered stacking manner in c axis direction, and ~50% interlayer twist structure. [4] The mechanical tests showed that it had significantly higher stiffness and fracture strength than other macroscale films made of solely graphene or graphite, along with a high in-plane electrical conductivity and thermal conductivity. 5) Experiments showed that the single-crystal monolayer CVD graphene exhibited a structural-directing effect that is, the highly crystalline graphene accelerates the carbonization and graphitization of polymers in a ‘catalytic’ manner. [5]

References
[1] B. Wang, R. S. Ruoff*., et al. Camphor-Enabled Transfer and Mechanical Testing of Centimeter-Scale Ultrathin Films, Advanced Materials 30, 1800888, 2018.
[2] B. Wang, R. S. Ruoff*., et al. Controlled Folding of Single Crystal Graphene, Nano Letters 17, 1467, 2017.
[3] B. Wang, N. Pugno*, R. S. Ruoff*, et al. Folding Large Graphene-on-Polymer Films Yields Laminated Composites with Enhanced Mechanical Performance, Advanced Materials 30, 1707449, 2018.
[4] B. Wang, B. Cunning*, R. S. Ruoff*, et al. Ultra-Stiff, Strong, and Highly Thermally Conductive Crystalline Graphitic Films with Mixed Stacking Order, Advanced Materials 31, 1903039, 2019.
[5] B. V. Cunning†, B. Wang†, R. S. Ruoff*. et al. Structure-Directing Effect of Single Crystal Graphene Film on Polymer Carbonization and Graphitization, Materials Horizons 6, 796, 2019.

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E-mail: meeting@c-gia.cn   meeting01@c-gia.cn

参展电话:13646399362(苏老师)

主讲申请:19991951101(王老师)

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凯发_王斌

凯发

演讲嘉宾-王斌

王斌
国家纳米科学中心,研究员,博士生导师
  王斌,国家纳米科学中心,研究员,博士生导师。主要从事多维纳米碳及复合材料的电化学与力学性质性能方面的研究工作。2014年博士毕业于国家纳米科学中心智林杰研究员课题组,2014至2019年相继在韩国基础科学研究所多维碳材料中心Rodney S. Ruoff 教授和澳大利亚新南威尔士大学戴黎明教授课题组做博士后研究。目前获得授权中国专利 7 项,发表论文60余篇,被引用4500余次,H因子36。
演讲题目:Assembly of CVD Graphene and Mechanical Properties
主题会场
开始时间
结束时间
内容摘要

On the basis of CVD techniques that can produce large-area, high-quality, and crystallinity-controlled graphene samples, we studied their deformation by stretching, folding, and stacking, and the related mechanical properties. Specifically, 1) we developed a camphor-assisted method to free-stand centimeter-long ultrathin films and do tensile test.[1] By involving CVD monolayer graphene, the results showed that the Young’s modulus of centimeter-long monolayer graphene was around 700 GPa and the fracture strength was 3~5 GPa, far lower than the values of ~100 GPa for the micron sized graphene; 2) A centimeter-sized monolayer graphene film was folded to get a bilayer graphene film that has tunable interlayer twist; [2] 3) A folding method was used to assemble a laminated composite that has rich graphene folds. From the bending tests and modeling, it was found that the graphene folds reinforced the composite; [3] 4) A stacking method was used to assemble 100 layers of monolayer CVD graphene films to get a new carbon material that has low defect density, pure carbon content, highly ordered stacking manner in c axis direction, and ~50% interlayer twist structure. [4] The mechanical tests showed that it had significantly higher stiffness and fracture strength than other macroscale films made of solely graphene or graphite, along with a high in-plane electrical conductivity and thermal conductivity. 5) Experiments showed that the single-crystal monolayer CVD graphene exhibited a structural-directing effect that is, the highly crystalline graphene accelerates the carbonization and graphitization of polymers in a ‘catalytic’ manner. [5]

References
[1] B. Wang, R. S. Ruoff*., et al. Camphor-Enabled Transfer and Mechanical Testing of Centimeter-Scale Ultrathin Films, Advanced Materials 30, 1800888, 2018.
[2] B. Wang, R. S. Ruoff*., et al. Controlled Folding of Single Crystal Graphene, Nano Letters 17, 1467, 2017.
[3] B. Wang, N. Pugno*, R. S. Ruoff*, et al. Folding Large Graphene-on-Polymer Films Yields Laminated Composites with Enhanced Mechanical Performance, Advanced Materials 30, 1707449, 2018.
[4] B. Wang, B. Cunning*, R. S. Ruoff*, et al. Ultra-Stiff, Strong, and Highly Thermally Conductive Crystalline Graphitic Films with Mixed Stacking Order, Advanced Materials 31, 1903039, 2019.
[5] B. V. Cunning†, B. Wang†, R. S. Ruoff*. et al. Structure-Directing Effect of Single Crystal Graphene Film on Polymer Carbonization and Graphitization, Materials Horizons 6, 796, 2019.

关于主办方

联系我们
400-110-3655   

E-mail: meeting@c-gia.cn   meeting01@c-gia.cn

参展电话:13646399362(苏老师)

主讲申请:19991951101(王老师)

官方微信订阅号
Copyright © 中国国际石墨烯创新大会 版权所有     运营机构:北京现代华清材料科技发展中心
grapchina.org 京ICP备10026874号-12   grapchina.cn 京ICP备10026874号-23
京公网安备 11010802023402号
分享到: