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Ahmed S, Ghani A, Muhammad I, Muhammad I, Mehmood A, Ullah N, Hassan A, Wang Y, Tian X, Yakobson B. Enhanced As-COF nanochannels as a high-capacity anode for K and Ca-ion batteries. Phys Chem Chem Phys 2024; 26:6977-6983. [PMID: 38344751 DOI: 10.1039/d3cp05171d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Covalent organic frameworks can be used for next-generation rechargeable metal-ion batteries due to their controllable spatial and chemical architectures and plentiful elemental reserves. In this study, the arsenic-based covalent organic framework (As-COF) is designed by employing the geometrical symmetry of a semiconducting phosphazene-based covalent organic framework that uses p-phenylenediamine as a linker and hexachorocyclotriphosphazene as an As-containing monomer in a C3-like spatial configuration. The As-COF with engineered nanochannels demonstrates exceptional anodic behavior for potassium (K) and calcium (Ca) ion batteries. It exhibits a high storage capacity of about 914(2039) mA h g-1, low diffusion barriers of 0.12(0.26) eV, low open circuit voltage of 0.23(0.18) V, and a minimal volume expansion of 2.41(2.32)% for K (Ca) ions. These attributes collectively suggest that As-COF could significantly advance high-capacity rechargeable batteries.
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Affiliation(s)
- Shehzad Ahmed
- College of Physics and Optoelectronic Engineering, Shenzhen University, Guangdong 518060, P. R. China.
| | - Awais Ghani
- Smart Materials for Architecture Research Lab, Innovation Center of Yangtze River Delta, Zhejiang University, Jiaxing 314100, P. R. China
| | - Imran Muhammad
- Department of Chemistry and Guangdong Provincial Key Laboratory of Catalytic Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Iltaf Muhammad
- College of Physics and Optoelectronic Engineering, Shenzhen University, Guangdong 518060, P. R. China.
| | - Andleeb Mehmood
- College of Physics and Optoelectronic Engineering, Shenzhen University, Guangdong 518060, P. R. China.
| | - Naeem Ullah
- College of Physics and Optoelectronic Engineering, Shenzhen University, Guangdong 518060, P. R. China.
| | - Arzoo Hassan
- College of Physics and Optoelectronic Engineering, Shenzhen University, Guangdong 518060, P. R. China.
| | - Yong Wang
- School of Physics, Nankai University, Tianjin 300071, P. R. China
| | - Xiaoqing Tian
- College of Physics and Optoelectronic Engineering, Shenzhen University, Guangdong 518060, P. R. China.
| | - Boris Yakobson
- Department of Materials Science and Nano Engineering, Department of Chemistry and the Smelly Institute for Nano Scale Science and Technology, Rice University, Houston, TX 77005, USA
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Liu S, Liu B, Yu M, Gao H, Guo H, Jiang D, Yang S, Wen Y, Wu Y. First principles study of a triazine-based covalent organic framework as a high-capacity anode material for Na/K-ion batteries. Phys Chem Chem Phys 2024; 26:1376-1384. [PMID: 38112129 DOI: 10.1039/d3cp04721k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
The rational design of high-performance anode materials is crucial for the development of rechargeable Na-ion batteries (NIBs) and K-ion batteries (KIBs). In this study, based on density functional theory (DFT) calculations, we have systematically investigated the possibility of a bilayer triazine-based covalent organic framework (bilayer TCOF) as an anode for NIBs and KIBs. The calculation of the electronic band structure shows that the bilayer TCOF is a direct band gap semiconductor with a band gap of 2.01 eV. After the adsorption of Na/K at the most favorable sites, the bilayer TCOF transitions from a semiconductor to a metal state, guaranteeing good electronic conductivity. The low diffusion barriers of the bilayer TCOF are 0.45 and 0.26 eV, respectively, indicating a fast diffusion rate of Na/K ions. In addition, the bilayer TCOF has a theoretical storage capacity of up to 628 mA h g-1. Finally, it is found that the average voltage of the bilayer TCOF for NIBs and KIBs is 0.53 and 0.48 V, respectively. Based on these results, we can conclude that the bilayer TCOF may be a suitable anode material for NIBs and KIBs.
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Affiliation(s)
- Sitong Liu
- College of Mathematics and Physics, Jinggangshan University, Ji'an, Jiangxi 343009, China.
| | - Bo Liu
- College of Mathematics and Physics, Jinggangshan University, Ji'an, Jiangxi 343009, China.
| | - Meidong Yu
- College of Mathematics and Physics, Jinggangshan University, Ji'an, Jiangxi 343009, China.
| | - Hanyu Gao
- College of Mathematics and Physics, Jinggangshan University, Ji'an, Jiangxi 343009, China.
| | - Haipeng Guo
- College of Mathematics and Physics, Jinggangshan University, Ji'an, Jiangxi 343009, China.
| | - Daguo Jiang
- College of Mathematics and Physics, Jinggangshan University, Ji'an, Jiangxi 343009, China.
| | - Shenbo Yang
- Hongzhiwei Technology (Shanghai) Co. Ltd., 1599 Xinjinqiao Road, Pudong, Shanghai, China
| | - Yufeng Wen
- College of Mathematics and Physics, Jinggangshan University, Ji'an, Jiangxi 343009, China.
| | - Yabei Wu
- Department of Materials Science and Engineering and Guangdong Provincial Key Lab for Computational Science and Materials Design, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
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