Freestanding MXene-hydrogel via critical density controlled self-assembly: high performance energy storage with ultrahigh capacitive vs diffusion limited contribution

2021 ◽  
Author(s):  
Uday Narayan Maiti ◽  
Pronoy Dutta ◽  
Amalika Patra ◽  
Sujit Kumar Deb ◽  
Anirban Sikdar ◽  
...  
Keyword(s):  
Energy Storage ◽  
Self Assembly ◽  
High Performance ◽  
Critical Density ◽  
Two Dimensional ◽  
Macroscopic Scale ◽  
Diffusion Limited ◽  
Two Dimensional Materials ◽  
Full Utilization

Solvated network of two-dimensional materials in the form of hydrogel offers a unique platform for full utilization of surface dominated properties at the macroscopic scale. However, development of such hydrogels...

scholarly journals Polarization-sensitive photodetectors based on three-dimensional molybdenum disulfide (MoS2) field-effect transistors

Nanophotonics ◽  
2020 ◽  
Vol 9 (16) ◽  
pp. 4719-4728
Author(s):  
Tao Deng ◽  
Shasha Li ◽  
Yuning Li ◽  
Yang Zhang ◽  
Jingye Sun ◽  
...  
Keyword(s):  
Molybdenum Disulfide ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistors ◽  
Three Dimensional ◽  
Polarized Light ◽  
Optical Field ◽  
Two Dimensional ◽  
Polarization Ratio ◽  
Two Dimensional Materials

AbstractThe molybdenum disulfide (MoS2)-based photodetectors are facing two challenges: the insensitivity to polarized light and the low photoresponsivity. Herein, three-dimensional (3D) field-effect transistors (FETs) based on monolayer MoS2 were fabricated by applying a self–rolled-up technique. The unique microtubular structure makes 3D MoS2 FETs become polarization sensitive. Moreover, the microtubular structure not only offers a natural resonant microcavity to enhance the optical field inside but also increases the light-MoS2 interaction area, resulting in a higher photoresponsivity. Photoresponsivities as high as 23.8 and 2.9 A/W at 395 and 660 nm, respectively, and a comparable polarization ratio of 1.64 were obtained. The fabrication technique of the 3D MoS2 FET could be transferred to other two-dimensional materials, which is very promising for high-performance polarization-sensitive optical and optoelectronic applications.

scholarly journals Direct Patterning and Spontaneous Self-Assembly of Graphene Oxide via Electrohydrodynamic Jet Printing for Energy Storage and Sensing

Micromachines ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 13 ◽  
Author(s):  
Bin Zhang ◽  
Jaehyun Lee ◽  
Mincheol Kim ◽  
Naeeung Lee ◽  
Hyungdong Lee ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Energy Storage ◽  
Self Assembly ◽  
High Performance ◽  
Three Dimensional ◽  
Chemical Properties ◽  
Layer By Layer ◽  
Energy Storage Devices ◽  
Laminar Structure ◽  
Jet Printing

The macroscopic assembly of two-dimensional materials into a laminar structure has received considerable attention because it improves both the mechanical and chemical properties of the original materials. However, conventional manufacturing methods have certain limitations in that they require a high temperature process, use toxic solvents, and are considerably time consuming. Here, we present a new system for the self-assembly of layer-by-layer (LBL) graphene oxide (GO) via an electrohydrodynamic (EHD) jet printing technique. During printing, the orientation of GO flakes can be controlled by the velocity distribution of liquid jet and electric field-induced alignment spontaneously. Closely-packed GO patterns with an ordered laminar structure can be rapidly realized using an interfacial assembly process on the substrates. The surface roughness and electrical conductivity of the LBL structure were significantly improved compared with conventional dispensing methods. We further applied this technique to fabricate a reduced graphene oxide (r-GO)-based supercapacitor and a three-dimensional (3D) metallic grid hybrid ammonia sensor. We present the EHD-assisted assembly of laminar r-GO structures as a new platform for preparing high-performance energy storage devices and sensors.

Soft template assisted self-assembly: a general strategy toward two-dimensional molecular crystals for high-performance organic field-effect transistors

2022 ◽  
Author(s):  
Xinzi Tian ◽  
Jiarong Yao ◽  
Siyu Guo ◽  
Zhaofeng Wang ◽  
Yanling Xiao ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Self Assembly ◽  
High Performance ◽  
Field Effect Transistors ◽  
Molecular Crystals ◽  
Soft Template ◽  
General Strategy ◽  
Two Dimensional ◽  
Organic Field Effect Transistors ◽  
Intrinsic Properties

Two-dimensional molecular crystals (2DMCs) are highly desirable to probe the intrinsic properties in organic semiconductors and are promising candidates for constructing high-performance optoelectronic devices. Liquids such as water are favorable...

scholarly journals Molecular interaction balanced one- and two-dimensional hybrid nanoarchitectures for high-performance supercapacitors

2019 ◽  
Vol 21 (40) ◽  
pp. 22283-22292 ◽  
Author(s):  
Mingxia Lu ◽  
Gang Wang ◽  
Bo Li ◽  
Jing Chen ◽  
Jingchao Zhang ◽  
...  
Keyword(s):  
Molecular Interactions ◽  
Self Assembly ◽  
Molecular Interaction ◽  
High Performance ◽  
Charge Storage ◽  
Two Dimensional ◽  
Assembly Process ◽  
Equilibrium Thermodynamic ◽  
Good Separation ◽  
Ratio Dependent

Stepwise ultrasonication and self-assembly process enables good separation between disequilibrium and equilibrium thermodynamic molecular interactions, which allow excellent electrochemical charge storage based on ratio-dependent 1D–2D hybridisation.

Tunable energy storage capacity of two-dimensional Ti3C2Tx modified by a facile two-step pillaring strategy for high performance supercapacitor electrodes

Nanoscale ◽  
2019 ◽  
Vol 11 (45) ◽  
pp. 21981-21989 ◽  
Author(s):  
Yahui Li ◽  
Yanan Deng ◽  
Jianfeng Zhang ◽  
Ye Han ◽  
Weiwei Zhang ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Storage Capacity ◽  
Two Dimensional ◽  
Energy Storage Capacity

This paper proposed to tailor the layer microstructures of two-dimensional Ti3C2Txvia a facile Li+ pre-pillaring and successive pillaring strategy by various cations.

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