Glue-assisted grinding exfoliation of large-size 2D materials for insulating thermal conduction and large-current-density hydrogen evolution

Yang, Liusi; Wang, Dashuai; Liu, Minsu; Liu, Heming; Tan, Jing; Wang, Zhongyue; Zhou, Heyuan; Yu, Qiangmin; Wang, Jingyun; Lin, Junhao; Zou, Xiaolong; Qiu, Ling; Cheng, Hui‐Ming; Liu, Bilu

doi:10.1016/j.mattod.2021.08.009

Cited by 65 publications

(37 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nowadays, there have been increasing demands for developing environmental-friendly materials from existing natural materials because excessive use of petroleum-based materials has caused serious damage to the ecological environment. − Two-dimensional nanoclay exfoliated from natural clay minerals ( e.g. , montmorillonite, mica, and vermiculite) has excellent mechanical and functional properties and is a good building block for constructing environmentally friendly, high-performance materials because the natural minerals are cheap, nontoxic, and extremely abundant on Earth. − Assembling nanoclay into mulitilayered films promises broad applications ranging from mechanical reinforcement, , gas barrier, − flame retardency, heat insulation, , electrical insulation, , and ion transport to tissue engineering . The key is to increase nanosheet alignment in the multilayered nanostructure and improve interfacial interaction between the nanosheets for achieving high mechanical performance. , Huang et al provided an efficient strategy to substantially enhance the inter-nanosheet interactions using positive and negative charge adsorption generated by chemical adsorption .…”

Section: Introductionmentioning

confidence: 99%

“…1−4 Twodimensional nanoclay exfoliated from natural clay minerals (e.g., montmorillonite, mica, and vermiculite) has excellent mechanical and functional properties and is a good building block for constructing environmentally friendly, high-performance materials because the natural minerals are cheap, nontoxic, and extremely abundant on Earth. 5−8 Assembling nanoclay into mulitilayered films promises broad applications ranging from mechanical reinforcement, 9,10 gas barrier, 11−15 flame retardency, 16 heat insulation, 17,18 electrical insulation, 19,20 and ion transport to tissue engineering. 21 The key is to increase nanosheet alignment in the multilayered nanostructure and improve interfacial interaction between the nanosheets for achieving high mechanical performance.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Constrained Assembly Strategy for High-Strength Natural Nanoclay Film

Zhao

Huang

et al. 2022

ACS Nano

View full text Add to dashboard Cite

Developing high-performance materials from existing natural materials is highly desired because of their environmental friendliness and low cost; two-dimensional nanoclay exfoliated from layered silicate minerals is a good building block to construct multilayered macroscopic assemblies for achieving high mechanical and functional properties. Nevertheless, the efforts have been frustrated by insufficient internanosheet stress transfer and nanosheet misalignment caused by capillary force during solution-based spontaneous assembly, degrading the mechanical strength of clay-based materials. Herein, a constrained assembly strategy that is implemented by in-plane stretching a robust water-containing nanoclay network with hydrogen and ionic bonding is developed to adjust the 2D topography of nanosheets within multilayered nanoclay film. In-plane stretching overcomes capillary force during water removal and thus restrains nanosheet conformation transition from nearly flat to wrinkled, leading to a highly aligned multilayered nanostructure with synergistic hydrogen and ionic bonding. It is proved that inter-nanosheet hydrogen and ionic bonding and nanosheet conformation extension generate profound mechanical reinforcement. The tensile strength and modulus of natural nanoclay film reach up to 429.0 MPa and 43.8 GPa and surpass the counterparts fabricated by normal spontaneous assembly. Additionally, improved heat insulation function and good nonflammability are shown for the natural nanoclay film and extend its potential for realistic uses.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Constrained Assembly Strategy for High-Strength Natural Nanoclay Film

Zhao

Huang

et al. 2022

ACS Nano

View full text Add to dashboard Cite

show abstract

“…The h-BN shows a thermal conductivity as high as 400 W/(m·K) in the plane configuration, while it is limited to 2 W/(m·K) in the vertical direction . Current research shows that many methods are used to manipulate h-BN orientation or distribution to improve thermal conductivity, such as magnetic and electric field-assisted, glue-assisted, salt-mold, spray-assisted, and frozen orientation methods. − However, these methods exhibit limited influence on the micro-orientation. According to the literature, electrospinning is a preferred method in transforming the orientation of nano- and micron-sized fillers in polymer composites.…”

Section: Introductionmentioning

confidence: 99%

Constructing a High-Density Thermally Conductive Network through Electrospinning–Hot-Pressing of BN@PDA/GO/PVDF Composites

Liang

Luo

Zhang

et al. 2022

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

Polymer matrix composites with high thermal conductivity and elastic mechanical properties are promising materials for diverse practical applications. Herein, BN@PDA/ GO/PVDF (PG) composite materials with a highly dense thermally conductive network were prepared by combining electrospinning and hot-pressing methods. Dopamine was used to modify hexagonal boron nitride (h-BN). The π−π interaction between the crystal plane structure of h-BN and the benzene ring in the polydopamine (PDA) structure can increase the surface adhesion of polyvinylidene fluoride (PVDF) fibers, thereby reducing the thermal resistance of the interface between the filler and polymer matrix. The contact per unit area was further improved by utilizing graphene oxide (GO) with a large specific surface area to clad the adhered fibers of BN@PDA. The thermal conductivity of PG60 was shown to be as high as 12.04 W/(m•K) owing to the increased density of the heat conduction path. It realizes the heat transfer from a point-to-point to a three-dimensional interconnected structure, implying that a synergistic effect is achieved. Moreover, when the mass ratio of BN@PDA to PVDF was 0.3 (P30), GO was added on the basis of P30. When the mass ratio of GO to BN@PDA was 1:8, PG30 was obtained. PG30 and P30 achieved tensile strengths of 26.65 and 23.38 MPa, respectively. This study provides an approach for designing a highly thermal conductive film with potential applications for the improvement of heat dissipation in electronic devices.

show abstract

“…Furthermore, most techniques for the synthesis of 2D nanomaterials oen lead to crystalline nanostructures. [37][38][39] Therefore, realizing the scalable synthesis of ultrathin amorphous nanosheets still remains an open issue, especially for amorphous multiphase heterostructure nanosheets with multiple interfaces. 40,41 Herein, we have developed a universal and efficient two-step method, ball-milling insertion and pure-water exfoliation, for the preparation of ultrathin amorphous nanosheets composed of individual component, two components or multiple components with multiple interfaces, which briey consists of ball milling of layered bulk materials (BN, V 2 O 5 , graphite, WS 2 , MoS 2 or their composites) and alkali metals (Li, Na, or K), and subsequent mild hydrothermal treatment in pure water, resulting in efficient transformation of layered bulk materials into 2D amorphous heterostructure nanosheets with multiple interface.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, most techniques for the synthesis of 2D nanomaterials often lead to crystalline nanostructures. 37–39 Therefore, realizing the scalable synthesis of ultrathin amorphous nanosheets still remains an open issue, especially for amorphous multiphase heterostructure nanosheets with multiple interfaces. 40,41…”

Section: Introductionmentioning

confidence: 99%