3 Papers
1 Citations
Tian Tian is an academic researcher from Northwestern Polytechnical University. The author has contributed to research in topics: Vacancy defect & Interconnection. The author has an hindex of 2, co-authored 2 publications. Previous affiliations of Tian Tian include National University of Singapore.
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Papers
Structure, Stability, and Kinetics of Vacancy Defects in Monolayer PtSe2: A First-Principles Study.
Junfeng Gao,Yuan Cheng,Tian Tian,Xiaoling Hu,Kaiyang Zeng,Gang Zhang,Yong-Wei Zhang +6 more
- 05 Dec 2017
TL;DR: This article systemically explores the structure, stability, and kinetics of both Pt and Se vacancies in monolayer PtSe2 using first-principles calculations and reveals a new type of Se double vacancy structure with the lowest energy.
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Coordinated allocation of multi-station fusion substation based on power-gas system
TL;DR: In this paper , an optimal planning model for multi-station fusion substation that takes coordinated electricity-gas allocation into account is proposed for large-scale construction of ubiquitous power IOT.
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In situ study of Li-ions diffusion and deformation in Li-rich cathode materials by using scanning probe microscopy techniques
Abstract: In this paper, the scanning probe microscopy (SPM) based techniques, namely, conductive-AFM, electrochemical strain microscopy (ESM) and AM–FM (amplitude modulation–frequency modulation) techniques, are used to in situ characterize the changes in topography, conductivity and elastic properties of Li-rich layered oxide cathode (Li1.2Mn0.54Ni0.13Co0.13O2) materials, in the form of nanoparticles, when subject to the external electric field. Nanoparticles are the basic building blocks for composite cathode in a Li-ion rechargeable battery. Characterization of the structure and electrochemical properties of the nanoparticles is very important to understand the performance and reliability of the battery materials and devices. In this study, the conductivity, deformation and mechanical properties of the Li-rich oxide nanoparticles under different polarities of biases are studied using the above-mentioned SPM techniques. This information can be correlated with the Li+-ion diffusion and migration in the particles under external electrical field. The results also confirm that the SPM techniques are ideal tools to study the changes in various properties of electrode materials at nano- to micro-scales during or after the ‘simulated’ battery operation conditions. These techniques can also be used to in situ characterize the electrochemical performances of other energy storage materials, especially in the form of the nanoparticles.