Constructing anion vacancy-rich MoSSe/G van der Waals heterostructures for high-performance Mg–Li hybrid-ion batteries

2021 ◽  
Author(s):  
Xianbo Yu ◽  
Guangyu Zhao ◽  
Canlong Wu ◽  
Huihuang Huang ◽  
Chao Liu ◽  
...  
Keyword(s):  
Adsorption Energy ◽  
High Performance ◽  
Diffusion Rate ◽  
Voltage Drop ◽  
Van Der Waals ◽  
Anion Vacancy ◽  
Diffusion Barriers ◽  
Ion Diffusion ◽  
Van Der Waals Heterostructures ◽  
Anion Vacancies

Anion vacancies riched MoSSe and graphene van der Waals heterostructures can reduce the ion diffusion barriers and increase the adsorption energy, thereby greatly enhancing the ion diffusion rate and suppressing the rapid voltage drop in discharge.

Layer-dependent photocatalysts of GaN/SiC-based multilayer van der Waals heterojunctions for Hydrogen Evolution

2021 ◽  
Author(s):  
Bojun Peng ◽  
Liang Xu ◽  
Jian Zeng ◽  
Xiaopeng Qi ◽  
Youwen Yang ◽  
...  
Keyword(s):  
Band Gap ◽  
Hydrogen Evolution ◽  
High Performance ◽  
Van Der Waals ◽  
Environmentally Friendly ◽  
Wide Band ◽  
Two Dimensional ◽  
Wide Band Gap ◽  
Van Der Waals Heterostructures ◽  
Composite Photocatalysts

The development of non-precious, high-performance and environmentally friendly wide band gap semiconductor composite photocatalysts is highly desirable. Here we report two-dimensional (2D) GaN/SiC-based multilayer van der Waals heterostructures for hydrogen...

Layered-spinel capped nanotube assembled 3D Li-rich hierarchitectures for high performance Li-ion battery cathodes

2016 ◽  
Vol 4 (47) ◽  
pp. 18416-18425 ◽  
Author(s):  
Fu-Da Yu ◽  
Lan-Fang Que ◽  
Zhen-Bo Wang ◽  
Yin Zhang ◽  
Yuan Xue ◽  
...  
Keyword(s):  
High Performance ◽  
Diffusion Rate ◽  
Li Ion Batteries ◽  
Li Ion Battery ◽  
Cycle Stability ◽  
Ion Diffusion ◽  
Irreversible Capacity ◽  
Capacity Loss ◽  
Li Ion ◽  
Resultant Material

We report an effective approach to fabricate layered-spinel capped nanotube assembled 3D Li-rich hierarchitectures as a cathode material for Li-ion batteries. The resultant material exhibits a reduced first-cycle irreversible capacity loss, rapid Li-ion diffusion rate and excellent cycle stability.

scholarly journals Manipulable Electronic and Optical Properties of Two-Dimensional MoSTe/MoGe2N4 van der Waals Heterostructures

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3338
Author(s):  
Jiali Wang ◽  
Xiuwen Zhao ◽  
Guichao Hu ◽  
Junfeng Ren ◽  
Xiaobo Yuan
Keyword(s):  
Optical Properties ◽  
Absorption Coefficient ◽  
High Performance ◽  
Density Functional ◽  
Van Der Waals ◽  
Two Dimensional ◽  
Van Der Waals Heterostructures ◽  
Electronic And Optical Properties ◽  
Wide Range ◽  
Direct Band

van der Waals heterostructures (vdWHs) can exhibit novel physical properties and a wide range of applications compared with monolayer two-dimensional (2D) materials. In this work, we investigate the electronic and optical properties of MoSTe/MoGe2N4 vdWH under two different configurations using the VASP software package based on density functional theory. The results show that Te4-MoSTe/MoGe2N4 vdWH is a semimetal, while S4-MoSTe/MoGe2N4 vdWH is a direct band gap semiconductor. Compared with the two monolayers, the absorption coefficient of MoSTe/MoGe2N4 vdWH increases significantly. In addition, the electronic structure and the absorption coefficient can be manipulated by applying biaxial strains and changing interlayer distances. These studies show that MoSTe/MoGe2N4 vdWH is an excellent candidate for high-performance optoelectronic devices.

scholarly journals Strongly coupled van der Waals heterostructures for high-performance infrared phototransistor

2019 ◽  
Vol 114 (10) ◽  
pp. 103501 ◽  
Author(s):  
Ningning Li ◽  
Yao Wen ◽  
Ruiqing Cheng ◽  
Lei Yin ◽  
Feng Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Van Der Waals ◽  
Van Der Waals Heterostructures ◽  
Strongly Coupled

scholarly journals Modulation Electronic Properties of Silicane/SnSe2 Van der Waals Heterostructures Using External Force and Electric Field

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Gang Xu ◽  
Yelu He
Keyword(s):  
Electric Field ◽  
Applied Electric Field ◽  
High Performance ◽  
Van Der Waals ◽  
Type I ◽  
Normal Strain ◽  
Van Der Waals Heterostructures ◽  
Electronic Band ◽  
Fundamental Research ◽  
Metal Phase Transition

In recent years, much interest in the study of Van der Waals heterostructures (vdWhs) has arisen. This has led to a significant amount of fundamental research being produced, from which novel optoelectronic applications have been established. By using first principles, we analyze the electronic structure of silicane/SnSe2 vdWhs in the response to an externally applied electric field and a normal strain. The results show that the silicane/SnSe2 vdWh acts as an indirect semiconductor when it is subjected to an applied electric field between −1 and 0.1 V/Å and becomes a metal in the 0.2 to 1 V/Å range. Significantly, the electronic band alignments of the silicane/SnSe2 vdWhs are modified from a type-II to a type-I when a field of −0.7 V/Å is applied. Furthermore, it is determined that the silicane/SnSe2 vdWhs appears to have a semiconductor-metal phase transition at a strain of −5%. Our results indicate that the silicane/SnSe2 vdWhs have the potential for applications in novel high-performance optoelectronic devices.

Printable Transfer-Free and Wafer-Size MoS2/Graphene van der Waals Heterostructures for High-Performance Photodetection

2017 ◽  
Vol 9 (14) ◽  
pp. 12728-12733 ◽  
Author(s):  
Qingfeng Liu ◽  
Brent Cook ◽  
Maogang Gong ◽  
Youpin Gong ◽  
Dan Ewing ◽  
...  
Keyword(s):  
High Performance ◽  
Van Der Waals ◽  
Van Der Waals Heterostructures ◽  
Wafer Size

Graphene van der Waals heterostructures for high-performance photodetectors

2019 ◽  
Vol 7 (36) ◽  
pp. 11056-11067 ◽  
Author(s):  
Huijuan Geng ◽  
Di Yuan ◽  
Zhi Yang ◽  
Zhenjie Tang ◽  
Xiwei Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
Recent Progress ◽  
Van Der Waals ◽  
Van Der Waals Heterostructures ◽  
Comprehensive Review ◽  
Vdw Heterostructure

We present a comprehensive review on the recent progress of graphene vdW heterostructure photodetectors and give further perspectives in this emerging field.

Selenium vacancy-rich and carbon-free VSe2 nanosheets for high-performance lithium storage

Nanoscale ◽  
2020 ◽  
Vol 12 (16) ◽  
pp. 8858-8866
Author(s):  
Qiwang Jiang ◽  
Jie Wang ◽  
Yan Jiang ◽  
Long Li ◽  
Xingzhong Cao ◽  
...  
Keyword(s):  
Active Sites ◽  
High Performance ◽  
Diffusion Rate ◽  
Lithium Ion ◽  
Ion Diffusion ◽  
Lithium Storage ◽  
Storage Performance ◽  
Lithium Ion Diffusion

Selenium vacancy-rich and carbon-free VSe2 nanosheets achieve excellent lithium storage performance due to significantly enhanced lithium-ion diffusion rate and electrochemical active sites induced by the Se vacancies.

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