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Gvozdetskyi V, Wang R, Xia W, Zhang F, Lin Z, Ho KM, Miller G, Zaikina JV. How to Look for Compounds: Predictive Screening and in situ Studies in Na-Zn-Bi System. Chemistry 2021; 27:15954-15966. [PMID: 34472129 PMCID: PMC9293119 DOI: 10.1002/chem.202101948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Indexed: 11/12/2022]
Abstract
Here, the combination of theoretical computations followed by rapid experimental screening and in situ diffraction studies is demonstrated as a powerful strategy for novel compounds discovery. When applied for the previously “empty” Na−Zn−Bi system, such an approach led to four novel phases. The compositional space of this system was rapidly screened via the hydride route method and the theoretically predicted NaZnBi (PbClF type, P4/nmm) and Na11Zn2Bi5 (Na11Cd2Sb5 type, P1‾
) phases were successfully synthesized, while other computationally generated compounds on the list were rejected. In addition, single crystal X‐ray diffraction studies of NaZnBi indicate minor deviations from the stoichiometric 1 : 1 : 1 molar ratio. As a result, two isostructural (PbClF type, P4/nmm) Zn‐deficient phases with similar compositions, but distinctly different unit cell parameters were discovered. The vacancies on Zn sites and unit cell expansion were rationalized from bonding analysis using electronic structure calculations on stoichiometric “NaZnBi”. In‐situ synchrotron powder X‐ray diffraction studies shed light on complex equilibria in the Na−Zn−Bi system at elevated temperatures. In particular, the high‐temperature polymorph HT‐Na3Bi (BiF3 type, Fm3‾m) was obtained as a product of Na11Zn2Bi5 decomposition above 611 K. HT‐Na3Bi cannot be stabilized at room temperature by quenching, and this type of structure was earlier observed in the high‐pressure polymorph HP‐Na3Bi above 0.5 GPa. The aforementioned approach of predictive synthesis can be extended to other multinary systems.
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Affiliation(s)
- Volodymyr Gvozdetskyi
- Department of Chemistry, Iowa State University, Ames, Iowa, 50011, United States of Amerika
| | - Renhai Wang
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou, 510006, China.,Department of Physics, University of Science and Technology of China, Hefei, 230026, China
| | - Weiyi Xia
- Department of Physics and Astronomy, Iowa State University, Ames, Iowa, 50011, United States of Amerika
| | - Feng Zhang
- Ames Laboratory, U.S. Department of Energy, Ames, Iowa, 50011, United States of Amerika
| | - Zijing Lin
- Department of Physics, University of Science and Technology of China, Hefei, 230026, China
| | - Kai-Ming Ho
- Department of Physics and Astronomy, Iowa State University, Ames, Iowa, 50011, United States of Amerika
| | - Gordon Miller
- Department of Chemistry, Iowa State University, Ames, Iowa, 50011, United States of Amerika
| | - Julia V Zaikina
- Department of Chemistry, Iowa State University, Ames, Iowa, 50011, United States of Amerika
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Gao H, Niu J, Zhang C, Peng Z, Zhang Z. A Dealloying Synthetic Strategy for Nanoporous Bismuth-Antimony Anodes for Sodium Ion Batteries. ACS NANO 2018; 12:3568-3577. [PMID: 29608846 DOI: 10.1021/acsnano.8b00643] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Metal-based anodes have recently aroused much attention in sodium ion batteries (SIBs) owing to their high theoretical capacities and low sodiation potentials. However, their progresses are prevented by the inferior cycling performance caused by severe volumetric change and pulverization during the (de)sodiation process. To address this issue, herein an alloying strategy was proposed and nanoporous bismuth (Bi)-antimony (Sb) alloys were fabricated by dealloying of ternary Mg-based precursors. As an anode for SIBs, the nanoporous Bi2Sb6 alloy exhibits an ultralong cycling performance (10 000 cycles) at 1 A/g corresponding to a capacity decay of merely 0.0072% per cycle, due to the porous structure, alloying effect and proper Bi/Sb atomic ratio. More importantly, a (de)sodiation mechanism ((Bi,Sb) ↔ Na(Bi,Sb) ↔ Na3(Bi,Sb)) is identified for the discharge/charge processes of Bi-Sb alloys by using operando X-ray diffraction and density functional theory calculations.
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Affiliation(s)
- Hui Gao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering , Shandong University , Jingshi Road 17923 , Jinan 250061 , PR China
| | - Jiazheng Niu
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering , Shandong University , Jingshi Road 17923 , Jinan 250061 , PR China
| | - Chi Zhang
- School of Applied Physics and Materials , Wuyi University , 22 Dongcheng Village , Jiangmen 529020 , PR China
| | - Zhangquan Peng
- School of Applied Physics and Materials , Wuyi University , 22 Dongcheng Village , Jiangmen 529020 , PR China
- State Key Laboratory of Electroanalytical Chemistry , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , PR China
| | - Zhonghua Zhang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering , Shandong University , Jingshi Road 17923 , Jinan 250061 , PR China
- School of Applied Physics and Materials , Wuyi University , 22 Dongcheng Village , Jiangmen 529020 , PR China
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Nie T, Meng L, Li Y, Luan Y, Yu J. Phase transition studies of Na 3Bi system under uniaxial strain. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2018; 30:125502. [PMID: 29488472 DOI: 10.1088/1361-648x/aaad22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We investigated the electronic properties and phase transitions of Na3Bi in four structural phases (space groups P63/mmc, P [Formula: see text] c1, Fm [Formula: see text] m and Cmcm) under constant-volume uniaxial strain using the first-principles method. For P63/mmc and P [Formula: see text] c1-Na3Bi, an important phase transition from a topological Dirac semimetal (TDS) to a topological insulator appears under compression strain around 4.5%. The insulating gap increases with the increasing compressive strain and up to around 0.1 eV at a strain of 10%. However, both P63/mmc and P [Formula: see text] c1-Na3Bi still keep the properties of a TDS within a tensile strain of 0-10%, although the Dirac points move away from the Γ point along Γ-A in reciprocal space as the tensile strain increases. The Na3Bi with space group Fm [Formula: see text] m is identified as a topological semimetal with the inverted bands between Na-3s and Bi-6p and a parabolic dispersion in the vicinity of Γ point. Interestingly, for Fm [Formula: see text] m-Na3Bi, both compression and tensile strain lead to a TDS which is identified by calculating surface Fermi arcs and topological invariants at time-reversal planes (k z = 0 and k z = π/c) in reciprocal space. Additionally, we confirmed the high pressure phase Cmcm-Na3Bi is an ordinary insulator with a gap of about 0.62 eV. It is noteworthy that its gap almost keeps constant around 0.60 eV within a compression strain of 0-10%. In contrast, a remarkable phase transition from an insulator to a metal phase appears under tensile strain. Moreover, this phase transition is highly sensitive to tensile strain and takes place only at a strain 1.0%. These strain-induced electronic structures and phase transitions of the Na3Bi system in various phases are important due to their possible applications under high pressure in future electronic devices.
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Affiliation(s)
- Tiaoping Nie
- Hunan Key Laboratory for Micro-Nano Energy Materials and Devices, School of Physics and Optoelectronics, Xiangtan University, Xiangtan 411105, Hunan, People's Republic of China
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Saleh G, Oganov AR. Alkali subhalides: high-pressure stability and interplay between metallic and ionic bonds. Phys Chem Chem Phys 2016; 18:2840-9. [DOI: 10.1039/c5cp06026e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The high pressure stability of alkali subhalides is rationalized by means of a thorough chemical bonding analysis.
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Affiliation(s)
- G. Saleh
- Moscow Institute of Physics and Technology
- Dolgoprudny city
- Russia
| | - A. R. Oganov
- Moscow Institute of Physics and Technology
- Dolgoprudny city
- Russia
- Skolkovo Institute of Science and Technology
- Skolkovo Innovation Center
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