Computational Condensed Matter最新文献

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A first-principles investigation on substitutionally doped & co-doped boron phosphide (BP) monolayer for hydrogen-based gas sensing 取代掺杂和共掺杂磷化硼(BP)单层氢基气体传感第一性原理研究
IF 2.6
Computational Condensed Matter Pub Date : 2025-07-10 DOI: 10.1016/j.cocom.2025.e01091
K.S. Bharath Shirpi Thasan, C. Poornimadevi, D. John Thiruvadigal
{"title":"A first-principles investigation on substitutionally doped & co-doped boron phosphide (BP) monolayer for hydrogen-based gas sensing","authors":"K.S. Bharath Shirpi Thasan,&nbsp;C. Poornimadevi,&nbsp;D. John Thiruvadigal","doi":"10.1016/j.cocom.2025.e01091","DOIUrl":"10.1016/j.cocom.2025.e01091","url":null,"abstract":"<div><div>Controlling dangerous toxic substances, gases, parasites, and emissions has been an endeavour for scientific organisations to improve human wellness and our surroundings. Sensors based on two-dimensional (2D) materials are very effective and can potentially be used for pollution and health monitoring. This research utilizes Density Functional Theory (DFT) to investigate how doping &amp; co-doping boron phosphide (BP) nanosheets with carbon and silicon influence their surface, aiming to improve structural stability and electronic characteristics. An in-depth examination of electronic and adsorption properties of doped &amp; co-doped BP nanosheets, reveals significant insights through the analysis of Mulliken population, band structure, total density of states, electron difference density, adsorption energy, electron localization function, recovery time etc. To assess the material's stability, we employed perturbation methods alongside formation energy analysis, phonon dynamics and molecular dynamics study. Our findings indicate that the doped &amp; co-doped system has a stronger tendency toward metallic &amp; semiconducting behaviour than the pristine BP nanosheet. The co-doped system exhibits a noticeable redshift and significant alterations in the conduction band due to chemical shifts. Furthermore, the adsorption properties of the doped &amp; co-doped system show enhanced adsorption towards gases than pristine BP due to the inclusion of group III &amp; IV elements. In particular, Si-doped BP for NH<sub>3</sub> adsorbed system electron localization occurs by forming a chemical bond between NH<sub>3</sub> and Si-BP by engaging covalent interactions, indicating a chemisorption reaction, also which shows more adsorption energy of -1.17 eV towards NH<sub>3</sub> with a reasonable recovery time of ‘3s’ at a higher temperature of 473K than other systems, suggesting promising potential contender for advancements in gas-sensing devices.</div></div>","PeriodicalId":46322,"journal":{"name":"Computational Condensed Matter","volume":"44 ","pages":"Article e01091"},"PeriodicalIF":2.6,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
DFT study of carbon monoxide adsorption on metal (Pt, Ni, Rh)-decorated single-walled carbon nanotubes 金属(Pt, Ni, Rh)修饰的单壁碳纳米管对一氧化碳吸附的DFT研究
IF 2.6
Computational Condensed Matter Pub Date : 2025-07-04 DOI: 10.1016/j.cocom.2025.e01085
Hongbing Shi , Xuan Li , Junxian Chen , Shengping Yu
{"title":"DFT study of carbon monoxide adsorption on metal (Pt, Ni, Rh)-decorated single-walled carbon nanotubes","authors":"Hongbing Shi ,&nbsp;Xuan Li ,&nbsp;Junxian Chen ,&nbsp;Shengping Yu","doi":"10.1016/j.cocom.2025.e01085","DOIUrl":"10.1016/j.cocom.2025.e01085","url":null,"abstract":"<div><div>The adsorption of CO on metal (Pt, Ni and Rh)-decorated armchair and zigzag single-walled carbon nanotubes (SWCNT) were investigated by using density functional theory (DFT) to assess the potential as the CO sensors. The results indicate that the geometric configurations and electronic structures of the complexes undergo significant changes upon metal and CO adsorption, with only minor deformation of the SWCNT. The calculated adsorption energies of CO on Pt-decorated SWCNT(7,0) and Pt-decorated SWCNT(4,4) are 2.36 eV and 2.20 eV, respectively, which are notably higher than those for CO on Ni- or Rh-decorated SWCNT. Pt-decorated SWCNT exhibit the strongest chemical adsorption with CO among the metal-decorated SWCNT. Natural bond orbital (NBO) analysis reveals that CO acts as an electron donor while the metal-decorated SWCNT function as the electron acceptor. Additionally, the HOMO-LUMO gap (Δε) of metal-decorated SWCNT decreases after CO adsorption, with a minimum value of 0.378 eV observed for SWCNT(7,0)-Pt-CO. The conductivity of Pt-decorated SWCNT is altered upon CO adsorption, indicating that Pt-decorated SWCNT could serve as the effective CO gas sensor at room temperature. The study also suggests that the maximum CO to Pt ratio in SWCNT-Pt-(CO)<sub>n</sub> is 3:1, which would be helpful for the CO sensors design.</div></div>","PeriodicalId":46322,"journal":{"name":"Computational Condensed Matter","volume":"44 ","pages":"Article e01085"},"PeriodicalIF":2.6,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of magnetic properties in (SrFeO3)2/(LaAlO3)1.5 (001) superlattice (SrFeO3)2/(LaAlO3)1.5(001)超晶格的磁性研究
IF 2.6
Computational Condensed Matter Pub Date : 2025-06-27 DOI: 10.1016/j.cocom.2025.e01084
Zubaria Maroof , Ren Ren , Shahid Hussain , Muhammad Habeeb Ul Hassan
{"title":"Study of magnetic properties in (SrFeO3)2/(LaAlO3)1.5 (001) superlattice","authors":"Zubaria Maroof ,&nbsp;Ren Ren ,&nbsp;Shahid Hussain ,&nbsp;Muhammad Habeeb Ul Hassan","doi":"10.1016/j.cocom.2025.e01084","DOIUrl":"10.1016/j.cocom.2025.e01084","url":null,"abstract":"<div><div>In this study, we investigate the interface of the heterostructure (SrFeO<sub>3</sub>)<sub>2</sub>/(LaAlO<sub>3</sub>)<sub>1.5</sub> to explore the emergent magnetic phenomena arising from the interplay between electrical and structural characteristics at this oxides interface. Utilizing density functional theory with Hubbard corrections (DFT + U), we analyze the magnetic states, density of states (DOS), and band structure of a 2 × 2 × 1 supercell configuration. While bulk SrFeO<sub>3</sub> typically exhibits ferromagnetism at room temperature, our results reveal that the C-type antiferromagnetism is energetically favored within this heterostructure configuration. This stabilization is attributed to charge transfer and structural distortions at the interface. This layered configuration reshapes the magnetic ordering energy, enabling the modulation of magnetic states. These findings provide valuable insights into the magnetic and electrical properties of the heterostructure.</div></div>","PeriodicalId":46322,"journal":{"name":"Computational Condensed Matter","volume":"44 ","pages":"Article e01084"},"PeriodicalIF":2.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144570138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corrigendum to “Electronic structure and lithium ion diffusion in Cr, Mo, W doped LiNiO2 for Li-ion batteries cathode material: First-principles study” [Comput. Condens. Matter 44, October (2025), e01081] “锂离子电池正极材料中Cr, Mo, W掺杂LiNiO2的电子结构和锂离子扩散:第一性原理研究”的勘误表[计算机]。提供者。Matter 44, October (2025), e01081]
IF 3.9
Computational Condensed Matter Pub Date : 2025-06-27 DOI: 10.1016/j.cocom.2025.101086
E. Xuesong, Tengfei Lu, Sumei Wu, Yao Liang, Xiang Liu, Yang Wen, Weiwei Jiang, Zheng Wei, Yan Cui, Zhihua Zhang
{"title":"Corrigendum to “Electronic structure and lithium ion diffusion in Cr, Mo, W doped LiNiO2 for Li-ion batteries cathode material: First-principles study” [Comput. Condens. Matter 44, October (2025), e01081]","authors":"E. Xuesong,&nbsp;Tengfei Lu,&nbsp;Sumei Wu,&nbsp;Yao Liang,&nbsp;Xiang Liu,&nbsp;Yang Wen,&nbsp;Weiwei Jiang,&nbsp;Zheng Wei,&nbsp;Yan Cui,&nbsp;Zhihua Zhang","doi":"10.1016/j.cocom.2025.101086","DOIUrl":"10.1016/j.cocom.2025.101086","url":null,"abstract":"","PeriodicalId":46322,"journal":{"name":"Computational Condensed Matter","volume":"44 ","pages":"Article 101086"},"PeriodicalIF":3.9,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144932008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A first principles study of the effect of Mo on Cr-containing carbides in carbidic austempered ductile iron Mo对碳化物等温球铁中含cr碳化物影响的第一性原理研究
IF 2.6
Computational Condensed Matter Pub Date : 2025-06-24 DOI: 10.1016/j.cocom.2025.e01080
Zhenyang Song, Zhiyong You, Peide Han, Teng Zhang, Guodong Yang, Jiamin Han, Bing Li, Chunle Sun
{"title":"A first principles study of the effect of Mo on Cr-containing carbides in carbidic austempered ductile iron","authors":"Zhenyang Song,&nbsp;Zhiyong You,&nbsp;Peide Han,&nbsp;Teng Zhang,&nbsp;Guodong Yang,&nbsp;Jiamin Han,&nbsp;Bing Li,&nbsp;Chunle Sun","doi":"10.1016/j.cocom.2025.e01080","DOIUrl":"10.1016/j.cocom.2025.e01080","url":null,"abstract":"<div><div>In this paper, the effects of Mo doping content on the structural stability, mechanical and electronic properties of Cr-containing carbides (Fe<sub>3</sub>Cr<sub>4</sub>C<sub>3</sub>) are investigated by means of first-principle calculations. The results show due to the difference in atomic radius between Mo and Cr atoms, Mo doping will increase the crystal volume of the carbide, and at the same time, it will lead to lattice distortion leading to lattice mismatch, with the increase of Mo content will make the symmetry decrease, and the carbide tends to be transformed from hexagonal to monoclinic crystal system, and the doping of Mo atoms will also make the stability of the carbide decrease, leading to the decrease in the overall stiffness and strength, and become softer. Wyckoff's Fe<sub>3</sub>Cr<sub>2</sub>Mo<sub>2</sub>C<sub>3</sub> carbides with 2b (Mo)6c (Fe) 2c (Mo)4c (Cr) sites achieve higher Young's modulus with higher B/G and Poisson's ratio. (Fe, Cr, Mo)<sub>7</sub>C<sub>3</sub> is anticipated to be a material with both high strength and high toughness.</div></div>","PeriodicalId":46322,"journal":{"name":"Computational Condensed Matter","volume":"44 ","pages":"Article e01080"},"PeriodicalIF":2.6,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144572222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermodynamic stability and gap modulation in defect and Zn-substituted CuAl2X4 (X = S, Se, and Te) chalcopyrite compounds 缺陷和锌取代CuAl2X4 (X = S, Se和Te)黄铜矿化合物的热力学稳定性和间隙调制
IF 2.6
Computational Condensed Matter Pub Date : 2025-06-21 DOI: 10.1016/j.cocom.2025.e01067
Ankita Nayak , Singdha Sagarika Behera , Aiswarya Priyambada , Priyadarshini Parida
{"title":"Thermodynamic stability and gap modulation in defect and Zn-substituted CuAl2X4 (X = S, Se, and Te) chalcopyrite compounds","authors":"Ankita Nayak ,&nbsp;Singdha Sagarika Behera ,&nbsp;Aiswarya Priyambada ,&nbsp;Priyadarshini Parida","doi":"10.1016/j.cocom.2025.e01067","DOIUrl":"10.1016/j.cocom.2025.e01067","url":null,"abstract":"<div><div>In this study, we have examined the structural and electronic properties of defect and Zn-substituted CuAl<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>X<span><math><msub><mrow></mrow><mrow><mn>4</mn></mrow></msub></math></span> (X <span><math><mo>=</mo></math></span> S, Se, and Te) chalcopyrite type compounds using the density functional formalism within the pseudopotential framework, employing plane waves as the basis set. All calculations are carried out using the ab initio lattice parameters. The structural analysis indicates that CuAl<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>X<span><math><msub><mrow></mrow><mrow><mn>4</mn></mrow></msub></math></span> (X <span><math><mo>=</mo></math></span> S, Se, and Te) exhibits tetrahedral distortion due to the presence of vacancy sites. However, with the substitution of Zn atoms at the vacancy sites, the tetrahedra remain distorted. The values of lattice constants are more in the substituted compounds than that of the defect compounds. Both the defect and substituted compounds are thermodynamically stable, as evidenced by their negative cohesive energy values. The analysis of electronic behavior reveals that these compounds are conducting in nature, however, in the defect compounds, the Fermi level is close to the valence band, whereas, in the substituted compounds, the Fermi level lies in the conduction band region. The presence of Zn atoms reduces the electronic band gap than that of the defect compounds.</div></div>","PeriodicalId":46322,"journal":{"name":"Computational Condensed Matter","volume":"44 ","pages":"Article e01067"},"PeriodicalIF":2.6,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144366123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced thermoelectric performance of double perovskites Ba2NbBiS6 and Ba2TaSbS6 via carrier engineering and chemical potential tuning 通过载流子工程和化学势调谐增强双钙钛矿Ba2NbBiS6和Ba2TaSbS6的热电性能
IF 2.6
Computational Condensed Matter Pub Date : 2025-06-19 DOI: 10.1016/j.cocom.2025.e01083
T. Ghellab , H. Baaziz , Z. Charifi
{"title":"Enhanced thermoelectric performance of double perovskites Ba2NbBiS6 and Ba2TaSbS6 via carrier engineering and chemical potential tuning","authors":"T. Ghellab ,&nbsp;H. Baaziz ,&nbsp;Z. Charifi","doi":"10.1016/j.cocom.2025.e01083","DOIUrl":"10.1016/j.cocom.2025.e01083","url":null,"abstract":"<div><div>The elastic and thermoelectric properties of Ba<sub>2</sub>NbBiS<sub>6</sub> and Ba<sub>2</sub>TaSbS<sub>6</sub> were investigated to assess their mechanical stability and thermoelectric efficiency. Elastic property calculations confirmed that both compounds satisfy the mechanical stability criteria. Ba<sub>2</sub>TaSbS<sub>6</sub> exhibits a higher bulk modulus (127.34 GPa), shear modulus (54.92 GPa), and Young's modulus (139.83 GPa), indicating superior stiffness and hardness, while Ba<sub>2</sub>NbBiS<sub>6</sub>, with a lower bulk modulus (112.51 GPa) and shear modulus (48.76 GPa), demonstrates greater ductility, making it more adaptable for flexible applications.</div><div>Thermoelectric transport properties were analyzed as functions of temperature, carrier concentration, and chemical potential. At 900 K, Ba<sub>2</sub>NbBiS<sub>6</sub> exhibited an initial ZT of 0.6090 at a carrier concentration of <em>n</em><sub><em>0</em></sub> = −3.2920 × 10<sup>19</sup> cm<sup>−3</sup> and chemical potential <em>μ</em><sub><em>0</em></sub> = 0.5411 Ryd, while Ba<sub>2</sub>TaSbS<sub>6</sub> had a ZT of 0.4968 at <em>n</em><sub><em>0</em></sub> = 0.9666 × 10<sup>19</sup> cm<sup>−3</sup> and <em>μ</em><sub><em>0</em></sub> = 0.62138 Ryd. An increase in ZT was observed with temperature, attributed to enhanced charge carrier mobility and reduced lattice thermal conductivity. A systematic optimization of carrier concentration through controlled doping led to significant enhancements in ZT, reaching 0.9209 for Ba<sub>2</sub>NbBiS<sub>6</sub> at <em>n</em> = −23.6592 × 10<sup>21</sup> cm<sup>−3</sup> and <em>μ</em> = <em>μ</em><sub><em>0</em></sub> + 0.1782 Ryd, and 0.8646 for Ba<sub>2</sub>TaSbS<sub>6</sub> at <em>n</em> = −1.6144 × 10<sup>21</sup> cm<sup>−3</sup> with <em>μ</em> = <em>μ</em><sub><em>0</em></sub> + 0.1073 Ryd, representing increases of 51.2 % and 74.1 %, respectively. These findings highlight the potential of Ba<sub>2</sub>NbBiS<sub>6</sub> and Ba<sub>2</sub>TaSbS<sub>6</sub> for high-temperature thermoelectric applications, where a balance between mechanical stability and energy efficiency is crucial. Ba<sub>2</sub>TaSbS<sub>6</sub> stands out as a mechanically robust material suitable for high-strength applications, while Ba<sub>2</sub>NbBiS<sub>6</sub>, with its enhanced ductility, is promising for flexible thermoelectric devices. Future studies should explore doping strategies and nanostructuring techniques to further enhance their thermoelectric properties for practical energy conversion applications.</div></div>","PeriodicalId":46322,"journal":{"name":"Computational Condensed Matter","volume":"44 ","pages":"Article e01083"},"PeriodicalIF":2.6,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144366125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Suzuki segregation of alloying elements at stacking faults in Ag-based alloys 银基合金层错处合金元素的铃木偏析
IF 2.6
Computational Condensed Matter Pub Date : 2025-06-19 DOI: 10.1016/j.cocom.2025.e01082
Zhou Yi , Yun-Lei Xu , Jia Hu , Da-Dong Wen , Yong-He Deng , Yun Xie , Shuang-Xiang Qi , Shuang He , Ping Peng
{"title":"Suzuki segregation of alloying elements at stacking faults in Ag-based alloys","authors":"Zhou Yi ,&nbsp;Yun-Lei Xu ,&nbsp;Jia Hu ,&nbsp;Da-Dong Wen ,&nbsp;Yong-He Deng ,&nbsp;Yun Xie ,&nbsp;Shuang-Xiang Qi ,&nbsp;Shuang He ,&nbsp;Ping Peng","doi":"10.1016/j.cocom.2025.e01082","DOIUrl":"10.1016/j.cocom.2025.e01082","url":null,"abstract":"<div><div>First-principles calculations were used in systematically investigating the intrinsic stacking fault energy (<span><math><mrow><msub><mi>γ</mi><mtext>isf</mtext></msub></mrow></math></span>) of alloying elements X (X = In, Sn, Zn, Zr, Cu, Ni, Ir, Cr, and W) doped in different atomic layers of Ag supercell and the shear strength of Ag supercell along the <span><math><mrow><mrow><mo>[</mo><mrow><mn>11</mn><mover><mn>2</mn><mo>‾</mo></mover></mrow><mo>]</mo></mrow><mrow><mo>(</mo><mn>111</mn><mo>)</mo></mrow></mrow></math></span> slip system after doping with alloy atom. Computational results demonstrate that compared to the <span><math><mrow><msub><mi>γ</mi><mtext>isf</mtext></msub></mrow></math></span> of pure Ag crystals, doping atoms Zn, In, and Sn on the slip plane reduces the value of <span><math><mrow><msub><mi>γ</mi><mtext>isf</mtext></msub></mrow></math></span> by approximately 10 %, 50 %, and 70 %, respectively, resulting in the Suzuki effect. Moreover, the addition of W, Ir, and Cr can increase the unstable stacking fault energy (<span><math><mrow><msub><mi>γ</mi><mtext>usf</mtext></msub></mrow></math></span>) and ideal shear strength (<span><math><mrow><msub><mi>σ</mi><mi>max</mi></msub></mrow></math></span>) of the Ag supercell in the <span><math><mrow><mrow><mo>[</mo><mrow><mn>11</mn><mover><mn>2</mn><mo>‾</mo></mover></mrow><mo>]</mo></mrow><mrow><mo>(</mo><mn>111</mn><mo>)</mo></mrow></mrow></math></span> slip system, increasing the nucleation energy barrier of <span><math><mrow><mn>1</mn><mo>/</mo><mn>6</mn><mrow><mo>[</mo><mrow><mn>11</mn><mover><mn>2</mn><mo>‾</mo></mover></mrow><mo>]</mo></mrow></mrow></math></span> Shockley partial dislocation and enhancing the yield strength of Ag crystals. The <span><math><mrow><msub><mi>γ</mi><mtext>usf</mtext></msub></mrow></math></span> and <span><math><mrow><msub><mi>σ</mi><mi>max</mi></msub></mrow></math></span> values of the Ag supercell in the <span><math><mrow><mrow><mo>[</mo><mrow><mn>11</mn><mover><mn>2</mn><mo>‾</mo></mover></mrow><mo>]</mo></mrow><mrow><mo>(</mo><mn>111</mn><mo>)</mo></mrow></mrow></math></span> slip system increase with the formation enthalpy of point defects (<em>H</em>), indicating that with the increase of <em>H</em>, dislocation motion is impeded and the creep resistance of the Ag crystals is enhanced.</div></div>","PeriodicalId":46322,"journal":{"name":"Computational Condensed Matter","volume":"44 ","pages":"Article e01082"},"PeriodicalIF":2.6,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electronic structure and lithium ion diffusion in Cr, Mo, W doped LiNiO2 for Li-ion batteries cathode material: First-principles study 锂离子电池正极材料中Cr, Mo, W掺杂LiNiO2的电子结构和锂离子扩散:第一性原理研究
IF 2.6
Computational Condensed Matter Pub Date : 2025-06-19 DOI: 10.1016/j.cocom.2025.e01081
Xuesong E, Tengfei Lu, Sumei Wu, Yao Liang, Xiang Liu, Yang Wen, Weiwei Jiang, Zheng Wei, Yan Cui, Zhihua Zhang
{"title":"Electronic structure and lithium ion diffusion in Cr, Mo, W doped LiNiO2 for Li-ion batteries cathode material: First-principles study","authors":"Xuesong E,&nbsp;Tengfei Lu,&nbsp;Sumei Wu,&nbsp;Yao Liang,&nbsp;Xiang Liu,&nbsp;Yang Wen,&nbsp;Weiwei Jiang,&nbsp;Zheng Wei,&nbsp;Yan Cui,&nbsp;Zhihua Zhang","doi":"10.1016/j.cocom.2025.e01081","DOIUrl":"10.1016/j.cocom.2025.e01081","url":null,"abstract":"<div><div>Ni-rich cathode materials are among the most promising electrode materials for lithium-ion batteries due to their high capacity and low cost. Doping is considered to be one of the most effective strategies to mitigate cycling performance degradation and enhance the stability of the cathode material. In this study, group VIB transition metals (TM = Cr, Mo and W) were doped into pristine LiNiO<sub>2</sub>, and their effects on structural stability, electronic properties, lithium-ion diffusion, and intercalation voltage were systematically investigated using density functional theory and ab initio molecular dynamics simulations. TM doping introduces impurity bands, reducing the band gap and significantly enhancing conductivity. The doped systems have thermodynamic stability. Both intrinsic and doped systems exhibit anisotropic diffusion, the <em>b</em>-axis remaining the energetically favored path for Li<sup>+</sup> migration. The diffusion activation energy of lithium-ion along <em>b</em>-axis decreases from 0.996 eV (pristine) to 0.696 eV (Cr), 0.608 eV (Mo) and 0.611 eV (W). Mo/W-doped systems exhibit Li<sup>+</sup> diffusion coefficients and rates 6 orders of magnitude higher than the pristine system. The intercalation voltage is also increased by TM-doped system. These results provide a theoretical foundation for optimizing Ni-rich cathodes through doping strategies, emphasizing the superior efficacy of Mo/W dopants in enhancing conductivity and Li<sup>+</sup> transport.</div></div>","PeriodicalId":46322,"journal":{"name":"Computational Condensed Matter","volume":"44 ","pages":"Article e01081"},"PeriodicalIF":2.6,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pressure induced DFT study on structural, electronic, optical, and thermodynamic properties of lead free InXF3 (X=Sr and Ba) for optoelectronic applications 光电子用无铅InXF3 (X=Sr和Ba)的结构、电子、光学和热力学性质的压力诱导DFT研究
IF 2.6
Computational Condensed Matter Pub Date : 2025-06-19 DOI: 10.1016/j.cocom.2025.e01077
M Mohammed Shoaib Hussain, Mohamed Sheik Sirajuddeen M
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