TY - JOUR
T1 - Hydraulic Power Manufacturing for Highly Scalable and Stable 2D Nanosheet Dispersions and Their Film Electrode Application
AU - Jeong, Jae Min
AU - Kang, Heon Gyu
AU - Kim, Hyung Jin
AU - Hong, Seok Bok
AU - Jeon, Hyeonyeol
AU - Hwang, Sung Yeon
AU - Seo, Donghyuk
AU - Kwak, Byeong Eun
AU - Han, Young Kyu
AU - Choi, Bong Gill
AU - Kim, Do Hyun
N1 - Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2018/10/24
Y1 - 2018/10/24
N2 - As 2D-nanosheet dispersions greatly facilitate solution-based processes, the preparation of 2D nanosheets in various solvents offers considerable potential in many applications, from electronics to energy storage and conversion. However, significant improvements are required in production cost, scalability, yield, and processability to realize the full potential of 2D nanosheets. Herein, a fast, scalable, and versatile hydraulic power process for the large-scale production of 2D nanosheets (graphene, MoS2, and boron nitride) dispersed in water is presented. A controlled, wavy Taylor-vortex flow allows for a high-shear mixing process with efficient mass transfer. The use of an ionic liquid dramatically improves the exfoliation of 2D materials, resulting in an extremely high yield (76.9%), a high concentration (20 mg mL−1), and a high production rate (8.6 g h−1). The computational fluid dynamics simulations reveal that the improved exfoliation performance originates from the high-shear mixing process, and the first-principles calculations rationalize this performance via the high adsorption energies of ionic liquids on 2D nanosheets. The highly stable 2D nanosheet dispersions efficiently facilitating the postprocesses of vacuum filtration and inkjet printing, resulting in highly conductive circuits and high-performance film electrodes for energy-storage applications, are also demonstrated.
AB - As 2D-nanosheet dispersions greatly facilitate solution-based processes, the preparation of 2D nanosheets in various solvents offers considerable potential in many applications, from electronics to energy storage and conversion. However, significant improvements are required in production cost, scalability, yield, and processability to realize the full potential of 2D nanosheets. Herein, a fast, scalable, and versatile hydraulic power process for the large-scale production of 2D nanosheets (graphene, MoS2, and boron nitride) dispersed in water is presented. A controlled, wavy Taylor-vortex flow allows for a high-shear mixing process with efficient mass transfer. The use of an ionic liquid dramatically improves the exfoliation of 2D materials, resulting in an extremely high yield (76.9%), a high concentration (20 mg mL−1), and a high production rate (8.6 g h−1). The computational fluid dynamics simulations reveal that the improved exfoliation performance originates from the high-shear mixing process, and the first-principles calculations rationalize this performance via the high adsorption energies of ionic liquids on 2D nanosheets. The highly stable 2D nanosheet dispersions efficiently facilitating the postprocesses of vacuum filtration and inkjet printing, resulting in highly conductive circuits and high-performance film electrodes for energy-storage applications, are also demonstrated.
KW - 2D materials
KW - computational fluid dynamics
KW - density functional theory
KW - hydrodynamic exfoliation
KW - ionic liquids
UR - http://www.scopus.com/inward/record.url?scp=85052665287&partnerID=8YFLogxK
U2 - 10.1002/adfm.201802952
DO - 10.1002/adfm.201802952
M3 - Article
AN - SCOPUS:85052665287
SN - 1616-301X
VL - 28
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 43
M1 - 1802952
ER -