1
|
Correa H, Peña Lara D, Mosquera-Vargas E. Evidence of a Proximity Effect in a (AgI) x - C (1-x) Mixture Using a Simulation Model Based on Random Variable Theory. Molecules 2024; 29:2491. [PMID: 38893367 PMCID: PMC11173457 DOI: 10.3390/molecules29112491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 05/03/2024] [Accepted: 05/08/2024] [Indexed: 06/21/2024] Open
Abstract
Silver iodide is a prototype compound of superionic conductors that allows ions to flow through its structure. It exhibits a first-order phase transition at 420 K, characterized by an abrupt change in its ionic conductivity behavior, and above this temperature, its ionic conductivity increases by more than three orders of magnitude. Introducing small concentrations of carbon into the silver iodide structure produces a new material with a mixed conductivity (ionic and electronic) that increases with increasing temperature. In this work, we report the experimental results of the ionic conductivity as a function of the reciprocal temperature for the (AgI)x - C(1-x) mixture at low carbon concentrations (x = 0.99, 0.98, and 0.97). The ionic conductivity behavior as a function of reciprocal temperature was well fitted using a phenomenological model based on a random variable theory with a probability distribution function for the carriers. The experimental data show a proximity effect between the C and AgI phases. As a consequence of this proximity behavior, carbon concentration or temperature can control the conductivity of the (AgI)x - C(1-x) mixture.
Collapse
Affiliation(s)
- Hernando Correa
- Instituto Interdisciplinario de las Ciencias, Universidad del Quindío, Armenia 630004, Colombia;
| | - Diego Peña Lara
- Grupo de Transiciones de Fases y Materiales Funcionales, Departamento de Física, Cali 760032, Colombia;
- Centro de Excelencia en Nuevos Materiales (CENM), Universidad del Valle, Cali 760032, Colombia
| | - Edgar Mosquera-Vargas
- Grupo de Transiciones de Fases y Materiales Funcionales, Departamento de Física, Cali 760032, Colombia;
- Centro de Excelencia en Nuevos Materiales (CENM), Universidad del Valle, Cali 760032, Colombia
| |
Collapse
|
2
|
Li J, Geng Y, Xu Z, Zhang P, Garbarino G, Miao M, Hu Q, Wang X. Mechanochemistry and the Evolution of Ionic Bonds in Dense Silver Iodide. JACS AU 2023; 3:402-408. [PMID: 36873701 PMCID: PMC9975826 DOI: 10.1021/jacsau.2c00550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 12/30/2022] [Accepted: 01/03/2023] [Indexed: 06/18/2023]
Abstract
External mechanical stress alters the nature of chemical bonds and triggers novel reactions, providing interesting synthetic protocols to supplement traditional solvent- or thermo-based chemical approaches. The mechanisms of mechanochemistry have been well studied in organic materials made of a carbon-centered polymeric framework and covalence force field. They convert stress into anisotropic strain which will engineer the length and strength of targeted chemical bonds. Here, we show that by compressing silver iodide in a diamond anvil cell, the external mechanical stress weakens the Ag-I ionic bonds and activate the global diffusion of super-ions. In contrast to conventional mechanochemistry, mechanical stress imposes unbiased influence on the ionicity of chemical bonds in this archetypal inorganic salt. Our combined synchrotron X-ray diffraction experiment and first-principles calculation demonstrate that upon the critical point of ionicity, the strong ionic Ag-I bonds break down, leading to the recovery of elemental solids from a decomposition reaction. Instead of densification, our results reveal the mechanism of an unexpected decomposition reaction through hydrostatic compression and suggest the sophisticated chemistry of simple inorganic compounds under extreme conditions.
Collapse
Affiliation(s)
- Jianfu Li
- School
of Physics and Electronic Information, Yantai
University, Yantai264005, P.R. China
| | - Yanlei Geng
- School
of Physics and Electronic Information, Yantai
University, Yantai264005, P.R. China
| | - Zhenzhen Xu
- School
of Physics and Electronic Information, Yantai
University, Yantai264005, P.R. China
| | - Pinhua Zhang
- School
of Physics and Electronic Engineering, Linyi
University, Linyi276005, P.R. China
| | - Gaston Garbarino
- European
Synchrotron Radiation Facility (ESRF), Grenoble38000, France
| | - Maosheng Miao
- Department
of Chemistry and Biochemistry, California
State University, Northridge, California91330, United States
| | - Qingyang Hu
- Center
for High Pressure Science and Technology Advanced Research, Beijing100094, P.R. China
| | - Xiaoli Wang
- School
of Physics and Electronic Information, Yantai
University, Yantai264005, P.R. China
| |
Collapse
|
3
|
Zhao L, Liu H, Tong S, Wang J, Han T, Liu C, Gao C, Han Y. Application of impedance spectroscopy in exploring electrical properties of dielectric materials under high pressure. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:434001. [PMID: 35973420 DOI: 10.1088/1361-648x/ac8a33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 08/16/2022] [Indexed: 06/15/2023]
Abstract
Impedance spectroscopy (IS) is an indispensable method of exploring electrical properties of materials. In this review, we provide an overview on the specific applications of IS measurement in the investigations of various electrical properties of materials under high pressure, including electric conduction in bulk and grain boundary, dielectric properties, ionic conduction, and electrostrictive effect. Related studies are summarized to demonstrate the method of analyzing different electrical transport processes with various designed equivalent circuits of IS and reveal some interesting phenomena of electrical properties of materials under high pressure.
Collapse
Affiliation(s)
- Lin Zhao
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, People's Republic of China
| | - Hao Liu
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, People's Republic of China
| | - Shuang Tong
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, People's Republic of China
| | - Jia Wang
- Institute for Interdisciplinary Biomass Functional Materials Studies, Jilin Engineering Normal University, Changchun 130052, People's Republic of China
| | - Tao Han
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, People's Republic of China
| | - Cailong Liu
- Shandong Key Laboratory of Optical Communication Science and Technology, School of Physical Science and Information Technology of Liaocheng University, Liaocheng 252059, People's Republic of China
| | - Chunxiao Gao
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, People's Republic of China
| | - Yonghao Han
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, People's Republic of China
| |
Collapse
|
4
|
Yan M, Wu B, Luo F, Shu X, Liu Y, Wei G, Zhang Z, Xie Y, Wang L, Lu X. Bi2O3 doped B2O3-ZnO glass powder for immobilization of radioactive iodine waste at low temperature. ANN NUCL ENERGY 2021. [DOI: 10.1016/j.anucene.2021.108480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
5
|
Liu Y, Li B, Shu X, Zhang Z, Wei G, Liu Y, Chen S, Xie Y, Lu X. Low-sintering-temperature borosilicate glass to immobilize silver-coated silica-gel with different iodine loadings. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123588. [PMID: 32777747 DOI: 10.1016/j.jhazmat.2020.123588] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 07/11/2020] [Accepted: 07/29/2020] [Indexed: 06/11/2023]
Abstract
To better deal with the radioactive iodine generated during the development of nuclear energy, B2O3, Bi2O3, ZnO, and SiO2 were used to sinter borosilicate glass for the immobilization of iodine. The effect of B2O3 on glass formation was discussed by changing the molar ratio of B2O3 in the matrix. When B2O3 content is 50 mol% and sintering temperature is 600 ℃, the amorphous degree of quaternary glass is the highest. The sintered body with the highest degree of amorphous was selected to study radioactive iodine. Then, the effects of different iodine loading concentrations for sintering borosilicate glass in terms of microstructure and phase change were discussed. With the increase in iodine content on silica-gel, the degree of amorphous of the specimens presented a decreasing trend, and there are obvious SiO2 peaks. When the content was 20 wt.%-30 wt.%, a large number of new phases were generated. When the iodine content is 20 wt.%, in addition to the enrichment of Si and O elements, the elemental distribution for B, Bi, Zn, I, and Ag was even. TEM results also showed that there was a crystalline phase in the sinter.
Collapse
Affiliation(s)
- Yi Liu
- State Key Laboratory of Environmental-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, PR China
| | - Bingsheng Li
- State Key Laboratory of Environmental-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, PR China
| | - Xiaoyan Shu
- Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, PR China
| | - Zhentao Zhang
- China Institute of Atomic Energy, Beijing, 102413, PR China
| | - Guilin Wei
- Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, PR China
| | - Yi Liu
- China Institute of Atomic Energy, Beijing, 102413, PR China
| | - Shunzhang Chen
- Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, PR China; Key Laboratory of Radiation Physics and Technology, Ministry of Education; Institute of Nuclear Science and Technology, Sichuan University, Chengdu, 610064, PR China
| | - Yi Xie
- University of Science and Technology of China, Hefei, 230026, PR China; CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei, 230031, PR China
| | - Xirui Lu
- State Key Laboratory of Environmental-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, PR China; Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, PR China.
| |
Collapse
|
6
|
Wang J, Yan Y, Liu H, Zhang G, Yue D, Tong S, Gao C, Han Y. Pressure-induced ionic to mixed ionic and electronic conduction transition in solid electrolyte LaF 3. Phys Chem Chem Phys 2020; 22:26306-26311. [DOI: 10.1039/d0cp03579c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
LaF3 was found to transform from pure ionic conduction to mixed ionic and electronic conduction at 15.0 GPa.
Collapse
Affiliation(s)
- Jia Wang
- State Key Laboratory for Superhard Materials
- Jilin University
- Changchun 130012
- China
- Institute for Interdisciplinary Biomass Functional Materials Studies
| | - Yalan Yan
- Institute for Interdisciplinary Biomass Functional Materials Studies
- Jilin Engineering Normal University
- Changchun 130052
- China
| | - Hao Liu
- State Key Laboratory for Superhard Materials
- Jilin University
- Changchun 130012
- China
| | - Guozhao Zhang
- State Key Laboratory for Superhard Materials
- Jilin University
- Changchun 130012
- China
| | - Donghui Yue
- State Key Laboratory for Superhard Materials
- Jilin University
- Changchun 130012
- China
- School of Physics and Electrical Engineering
| | - Shuang Tong
- State Key Laboratory for Superhard Materials
- Jilin University
- Changchun 130012
- China
| | - Chunxiao Gao
- State Key Laboratory for Superhard Materials
- Jilin University
- Changchun 130012
- China
| | - Yonghao Han
- State Key Laboratory for Superhard Materials
- Jilin University
- Changchun 130012
- China
| |
Collapse
|
7
|
Huang H, Zhang J, Zhang Y, Fu C, Huang J, Cheng Y, Niu C, Zhao X, Shinohara H. Rock-salt and helix structures of silver iodides under ambient conditions. Natl Sci Rev 2019; 6:767-774. [PMID: 34691932 PMCID: PMC8291502 DOI: 10.1093/nsr/nwz041] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 03/04/2019] [Accepted: 03/11/2019] [Indexed: 12/03/2022] Open
Abstract
Many different phase structures have been discovered for silver iodides. The β and γ phases were found to be the most common ones at ambient conditions, while the rock-salt phase was found to be stable under pressures between 400 MPa and 11.3 GPa. Recently, the α phase was demonstrated to be stable under ambient conditions when the particle sizes were reduced to below 10 nm. However, no other phase has been reported to be stable for silver iodides under ambient conditions. Rock-salt and helix structures have been found to be stable under ambient conditions in this study. The structures have been characterized by elemental mapping, Raman scattering, and high-resolution transmission electron microscopy. The stabilities of these structures were also confirmed by molecular dynamics and density functional theory.
Collapse
Affiliation(s)
- Hongyang Huang
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Jinying Zhang
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Yifan Zhang
- Department of Physics, Shanghai University, Shanghai 200444, China
| | - Chengcheng Fu
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Jialiang Huang
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Yonghong Cheng
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Chunming Niu
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy (CNRE), School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Xinluo Zhao
- Department of Physics, Shanghai University, Shanghai 200444, China
| | - Hisanori Shinohara
- Department of Chemistry and Institute for Advanced Research, Nagoya University, Nagoya 464–8602, Japan
| |
Collapse
|
8
|
Zhang X, Wang X, Wang Q, Ma X, Liu C, Li P, Liu C, Han Y, Ma Y, Gao C. Hydride ion (H -) transport behavior in barium hydride under high pressure. Phys Chem Chem Phys 2018; 20:8917-8923. [PMID: 29557428 DOI: 10.1039/c7cp08386f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Hydride ions (H-) have an appropriate size for fast transport, which makes the conduction of H- attractive. In this work, the H- transport properties of BaH2 have been investigated under pressure using in situ impedance spectroscopy measurements up to 11.2 GPa and density functional theoretical calculations. The H- transport properties, including ionic migration resistance, relaxation frequency, and relative permittivity, change significantly with pressure around 2.3 GPa, which can be attributed to the structural phase transition of BaH2. The ionic migration barrier energy of the P63/mmc phase decreases with pressure, which is responsible for the increased ionic conductivity. A huge dielectric constant at low frequencies is observed, which is related to the polarization of the H- dipoles. The current study establishes general guidelines for developing high-energy storage and conversion devices based on hydride ion transportation.
Collapse
Affiliation(s)
- Xin Zhang
- State Key Laboratory of Superhard Materials and Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
| | - Xiaoli Wang
- School of Physics and Electronic Engineering, Linyi University, Linyi 276005, China
| | - Qinglin Wang
- Shandong Provincial Key Laboratory of Optical Communication Science and Technology, School of Physical Science & Information Technology of Liaocheng University, Liaocheng 252059, China.
| | - Xinjun Ma
- State Key Laboratory of Superhard Materials and Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China. and College of Physics and Electronics Information, Inner Mongolia University for the Nationalities, Tongliao 028005, China
| | - Chunming Liu
- State Key Laboratory of Superhard Materials and Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
| | - Peifang Li
- College of Physics and Electronics Information, Inner Mongolia University for the Nationalities, Tongliao 028005, China
| | - Cailong Liu
- State Key Laboratory of Superhard Materials and Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
| | - Yonghao Han
- State Key Laboratory of Superhard Materials and Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
| | - Yanzhang Ma
- Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409, USA
| | - Chunxiao Gao
- State Key Laboratory of Superhard Materials and Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
| |
Collapse
|
9
|
Wang J, Han Y, Liu H, Zhang G, Liu C, Gao C. Pressure-induced abnormal ionic-polaronic-ionic transition sequences in AgBr. Phys Chem Chem Phys 2018; 20:7492-7497. [PMID: 29508875 DOI: 10.1039/c7cp07830g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The electrical transport behavior of the superionic conductor AgBr was systematically studied under high pressure up to 30.0 GPa with electrochemical impedance spectra measurements and first-principles calculations. From impedance spectra measurements, a pressure-induced abnormal ionic-polaronic-ionic transition was found. Herein, the ionic to polaronic transition at 5.0 GPa occurs with the absence of a structural phase transition. At 8.6 GPa, the ionic state of AgBr can be reactivated after a structural phase transition. Previous structural studies based on X-ray diffraction data cannot provide strong evidence to support the ionic-polaronic transition in AgBr at 5.0 GPa. In this paper, based on first-principles calculations, a localized-electron-soup model was proposed to explain the physical origin of the ionic-polaronic transition. In this model, more localized electrons around the Br atoms are pressed into interstitial spaces and, simultaneously, polarons are formed between Ag+ ions and the localized electron background at 5.0 GPa. Therefore, the diffusion of Ag+ ions is effectively screened by the movement of the localized electron background from its equilibrium position, much like beans completely trapped in a cup of thick soup.
Collapse
Affiliation(s)
- Jia Wang
- State Key Laboratory for Superhard Materials, Jilin University, Changchun 130012, China.
| | | | | | | | | | | |
Collapse
|