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Article

A Novel Two-Dimensional ZnSiP2 Monolayer as an Anode Material for K-Ion Batteries and NO2 Gas Sensing

1
Henan International Joint Laboratory of MXene Materials Microstructure, College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, China
2
College of mechanical and electrical engineering, Nanyang Normal University, Nanyang 473061, China
3
College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China
*
Authors to whom correspondence should be addressed.
Molecules 2022, 27(19), 6726; https://doi.org/10.3390/molecules27196726
Submission received: 15 September 2022 / Revised: 4 October 2022 / Accepted: 5 October 2022 / Published: 9 October 2022
(This article belongs to the Special Issue Computational Chemistry for Material Research)

Abstract

Using the crystal-structure search technique and first-principles calculation, we report a new two-dimensional semiconductor, ZnSiP2, which was found to be stable by phonon, molecular-dynamic, and elastic-moduli simulations. ZnSiP2 has an indirect band gap of 1.79 eV and exhibits an anisotropic character mechanically. Here, we investigated the ZnSiP2 monolayer as an anode material for K-ion batteries and gas sensing for the adsorption of CO, CO2, SO2, NO, NO2, and NH3 gas molecules. Our calculations show that the ZnSiP2 monolayer possesses a theoretical capacity of 517 mAh/g for K ions and an ultralow diffusion barrier of 0.12 eV. Importantly, the ZnSiP2 monolayer exhibits metallic behavior after the adsorption of the K-atom layer, which provides better conductivity in a period of the battery cycle. In addition, the results show that the ZnSiP2 monolayer is highly sensitive and selective to NO2 gas molecules.
Keywords: two-dimensional ZnSiP2; first-principles calculations; K-ion batteries; gas sensing two-dimensional ZnSiP2; first-principles calculations; K-ion batteries; gas sensing

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MDPI and ACS Style

Pu, C.; Wang, Z.; Tang, X.; Zhou, D.; Cheng, J. A Novel Two-Dimensional ZnSiP2 Monolayer as an Anode Material for K-Ion Batteries and NO2 Gas Sensing. Molecules 2022, 27, 6726. https://doi.org/10.3390/molecules27196726

AMA Style

Pu C, Wang Z, Tang X, Zhou D, Cheng J. A Novel Two-Dimensional ZnSiP2 Monolayer as an Anode Material for K-Ion Batteries and NO2 Gas Sensing. Molecules. 2022; 27(19):6726. https://doi.org/10.3390/molecules27196726

Chicago/Turabian Style

Pu, Chunying, Zhuo Wang, Xin Tang, Dawei Zhou, and Jinbing Cheng. 2022. "A Novel Two-Dimensional ZnSiP2 Monolayer as an Anode Material for K-Ion Batteries and NO2 Gas Sensing" Molecules 27, no. 19: 6726. https://doi.org/10.3390/molecules27196726

APA Style

Pu, C., Wang, Z., Tang, X., Zhou, D., & Cheng, J. (2022). A Novel Two-Dimensional ZnSiP2 Monolayer as an Anode Material for K-Ion Batteries and NO2 Gas Sensing. Molecules, 27(19), 6726. https://doi.org/10.3390/molecules27196726

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