1
|
Wang Y, Wang D, Bai C, Zhu Y, Xu L, Xiao H, Shi Q, Li X, Chen X, Shao H, Fang G. Electrochemical Behaviors and Doping Rules of NaRhO 2 Cathode Materials for Sodium-Ion Batteries. Inorg Chem 2024; 63:15224-15235. [PMID: 39067007 DOI: 10.1021/acs.inorgchem.4c02819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2024]
Abstract
Sodium-ion batteries (SIBs) have great advantages for energy storage and conversion due to their low cost and large storage capacity. Currently, NaRhO2 is used as an electrode material for sodium-ion batteries. Doping first- and second-row transition metals has been carried out to comprehensively assess NaRhO2 as a cathode material. The geometric and electronic structures and electrochemical and doping behaviors of NaRhO2 cathode materials for SIBs have been investigated using density functional theory calculations. The results show that the bond lengths of Rh-O in NaRhO2 decrease during sodium deintercalation. The band gap of NaRhO2 with sodium extraction gradually reduces. The density of states of NaxRhO2 shows that the interaction between the Rh-4d and O-2p orbitals increases and the orbitals shift toward the right. The average intercalation voltage of NaxRhO2 cathode material increased from 2.7 to 3.9 eV. After doping with first- and second-row transition metal elements from Sc to Zn and Y to Cd, the changes in the band gaps of the doped NaRhO2 materials exhibit a W-type rule. In contrast, their magnetic moments show a reverse W-type rule. These findings on the pristine and doped NaRhO2 can provide theoretical guidance for the preparation of novel electrode materials suitable for sodium-ion batteries.
Collapse
Affiliation(s)
- Yu Wang
- Zhejiang Provincial Key Laboratory of Carbon Materials, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Danling Wang
- Zhejiang Provincial Key Laboratory of Carbon Materials, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Chenqi Bai
- Zhejiang Provincial Key Laboratory of Carbon Materials, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yuanyuan Zhu
- Zhejiang Provincial Key Laboratory of Carbon Materials, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Lina Xu
- Zhejiang Provincial Key Laboratory of Carbon Materials, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Hongping Xiao
- Zhejiang Provincial Key Laboratory of Carbon Materials, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Qian Shi
- Zhejiang Provincial Key Laboratory of Carbon Materials, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xinhua Li
- Zhejiang Provincial Key Laboratory of Carbon Materials, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xi'an Chen
- Zhejiang Provincial Key Laboratory of Carbon Materials, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Hezhu Shao
- Zhejiang Provincial Key Laboratory of Carbon Materials, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Guoyong Fang
- Zhejiang Provincial Key Laboratory of Carbon Materials, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| |
Collapse
|
2
|
Qin Y, Chai C, Si Z, Song Y, Yang Y. Six novel silicon carbide with direct bandgaps: A comprehensive study. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2022.111603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
3
|
Massaro A, Pecoraro A, Muñoz-García AB, Pavone M. First-Principles Study of Na Intercalation and Diffusion Mechanisms at 2D MoS 2/Graphene Interfaces. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2021; 125:2276-2286. [PMID: 33584936 PMCID: PMC7876776 DOI: 10.1021/acs.jpcc.0c10107] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 01/12/2021] [Indexed: 06/12/2023]
Abstract
Na-ion batteries (NIBs) are emerging as promising energy storage devices for large-scale applications. Great research efforts are devoted to design new effective NIB electrode materials, especially for the anode side. A hybrid 2D heterojunction with graphene and MoS2 has been recently proposed for this purpose: while MoS2 has shown good reversible capacity as a NIB anode, graphene is expected to improve conductivity and resistance to mechanical stress upon cycling. The most relevant processes for the anode are the intercalation and diffusion of the large Na ion, whose complex mechanisms are determined by the structural and electronic features of the MoS2/graphene interface. Understanding these processes and mechanisms is crucial for developing new nanoscale anodes for NIBs with high performances. To this end, here we report a state-of-the-art DFT study to address (a) the structural and electronic properties of heterointerfaces between the MoS2 monolayers and graphene, (b) the most convenient insertion sites for Na, and (c) the possible diffusion paths along the interface and the corresponding energy barrier heights. We considered two MoS2 polymorphs: 1T and 3R. Our results show that 1T-MoS2 interacts more strongly with graphene than 3R-MoS2. In both cases, the best Na host site is found at the MoS2 side of the interface, and the band structure reveals a proper n-type character of the graphene moiety, which is responsible for electronic conduction. Minimum-energy paths for Na diffusion show very low barrier heights for the 3R-MoS2/graphene interface (<0.25 eV) and much higher values for its 1T counterpart (∼0.7 eV). Analysis of structural features along the diffusion transition states allows us to identify the strong coordination of Na with the exposed S atoms as the main feature hindering an effective diffusion in the 1T case. These results provide new hints on the physicochemical details of Na intercalation and diffusion mechanisms at complex 2D heterointerfaces and will help further development of advanced electrode materials for efficient NIBs.
Collapse
Affiliation(s)
- Arianna Massaro
- Department
of Chemical Sciences, University of Naples
“Federico II”, via Cintia 21, 80126 Naples, Italy
| | - Adriana Pecoraro
- Department
of Chemical Sciences, University of Naples
“Federico II”, via Cintia 21, 80126 Naples, Italy
- Department
of Physics “E. Pancini”, University
of Naples “Federico II”, via Cintia 21, 80126 Naples, Italy
| | - Ana B. Muñoz-García
- Department
of Physics “E. Pancini”, University
of Naples “Federico II”, via Cintia 21, 80126 Naples, Italy
| | - Michele Pavone
- Department
of Chemical Sciences, University of Naples
“Federico II”, via Cintia 21, 80126 Naples, Italy
| |
Collapse
|