Pub Date : 2025-12-04DOI: 10.1016/j.progsolidstchem.2025.100559
Wail Al Zoubi , Park Jaehyung , Mohammad R. Thalji , Chinho Park , Adnan Deep , Nokeun Park
High-entropy polyelement nanoparticles (HEPNs) exhibit unique behaviors distinct from those of the solid phases of individual elements. The disordered nature of multielement compounds introduces structural complexity and unprecedented compositional variations, necessitating a comprehensive understanding of stabilization enthalpy, entropy, and property optimization. HEPNs are particularly desirable when fabrication methods provide precise control comparable to that achieved conventional alloy design. Recent advancements in fabrication techniques have enabled greater control over the inherently disordered structures of HEPNs. This study explores emerging strategies for synthesizing HEPNs with tunable compositions, tailored atomic configurations, and enhanced catalytic activity achieved through the formation of novel active catalytic sites. It discusses fabrication pathways for different types of HEPNs, their stabilization mechanisms, and catalytic performance, providing insights into how of various synthesis approaches influence these properties. Collectively, these strategies enable the rational design and predictable controlled modulation of catalytic activity and atomic order within the disordered lattice, establishing a basis for enhanced applications.
{"title":"Recent synthetic approaches for high-entropy polyelement nanoparticles","authors":"Wail Al Zoubi , Park Jaehyung , Mohammad R. Thalji , Chinho Park , Adnan Deep , Nokeun Park","doi":"10.1016/j.progsolidstchem.2025.100559","DOIUrl":"10.1016/j.progsolidstchem.2025.100559","url":null,"abstract":"<div><div>High-entropy polyelement nanoparticles <strong>(</strong>HEPNs) exhibit unique behaviors distinct from those of the solid phases of individual elements. The disordered nature of multielement compounds introduces structural complexity and unprecedented compositional variations, necessitating a comprehensive understanding of stabilization enthalpy, entropy, and property optimization. HEPNs are particularly desirable when fabrication methods provide precise control comparable to that achieved conventional alloy design. Recent advancements in fabrication techniques have enabled greater control over the inherently disordered structures of HEPNs. This study explores emerging strategies for synthesizing HEPNs with tunable compositions, tailored atomic configurations, and enhanced catalytic activity achieved through the formation of novel active catalytic sites. It discusses fabrication pathways for different types of HEPNs, their stabilization mechanisms, and catalytic performance, providing insights into how of various synthesis approaches influence these properties. Collectively, these strategies enable the rational design and predictable controlled modulation of catalytic activity and atomic order within the disordered lattice, establishing a basis for enhanced applications.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"81 ","pages":"Article 100559"},"PeriodicalIF":10.5,"publicationDate":"2025-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145735472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-01DOI: 10.1016/j.progsolidstchem.2025.100551
Chunli Li , Linyun Zeng , Irina I. Piyanzina , Ziyi Hong , Wenjia Xie , Peican Chen , Liya Zhou , Chunyan Zhou , Jialiang Pan , Wei Liu , Weitao Ren , Xinguo Zhang
Presently Fe3+-doped NIR phosphors exhibit immense potential for multiple applications. However, a more comprehensive understanding of Fe3+ site-occupancy and luminescent mechanism is urgently needed for enhancing material design and synthesis. In this work, a high-efficient NIR-I emitting Fe3+-doped NaAl11O17 phosphor was synthesized and systematically studied. A hybrid density functional theory (DFT) calculation was performed on geometric and electronic structures to study Fe3+ occupation preference and the corresponding optical properties. It is found that Fe3+ prefers to occupy AlO4 sites with lower total energy compared with AlO6 sites. Under 340 nm excitation, NaAl11O17: Fe3+ phosphors exhibited a high-efficient NIR emission of 600∼1000 nm peaking at ∼770 nm, with a high internal quantum efficiency of 78.12 %. Based on both theoretical and experimental results, the 3d energy-level diagram of Fe3+ in NaAl11O17 is constructed and discussed with crystal field strength analysis. The optimal NaAl11O17: Fe3+ phosphor shows good thermal stability while keeping 87 and 45 % of room-temperature intensity at 373 and 473 K. A NIR pc-LED was fabricated and demonstrates applications in nondestructive detection and angiography. This hybrid investigation on Fe3+-doped NaAl11O17 NIR-I phosphor could provide an insight for developing Fe3+-activated NIR luminescent materials with excellent performance and expanding their application prospects.
{"title":"Site preference identification and crystal field analysis of high-efficient and thermal-stable NIR-I emission in NaAl11O17:Fe3+: experimental and DFT investigation","authors":"Chunli Li , Linyun Zeng , Irina I. Piyanzina , Ziyi Hong , Wenjia Xie , Peican Chen , Liya Zhou , Chunyan Zhou , Jialiang Pan , Wei Liu , Weitao Ren , Xinguo Zhang","doi":"10.1016/j.progsolidstchem.2025.100551","DOIUrl":"10.1016/j.progsolidstchem.2025.100551","url":null,"abstract":"<div><div>Presently Fe<sup>3+</sup>-doped NIR phosphors exhibit immense potential for multiple applications. However, a more comprehensive understanding of Fe<sup>3+</sup> site-occupancy and luminescent mechanism is urgently needed for enhancing material design and synthesis. In this work, a high-efficient NIR-I emitting Fe<sup>3+</sup>-doped NaAl<sub>11</sub>O<sub>17</sub> phosphor was synthesized and systematically studied. A hybrid density functional theory (DFT) calculation was performed on geometric and electronic structures to study Fe<sup>3+</sup> occupation preference and the corresponding optical properties. It is found that Fe<sup>3+</sup> prefers to occupy AlO<sub>4</sub> sites with lower total energy compared with AlO<sub>6</sub> sites. Under 340 nm excitation, NaAl<sub>11</sub>O<sub>17</sub>: Fe<sup>3+</sup> phosphors exhibited a high-efficient NIR emission of 600∼1000 nm peaking at ∼770 nm, with a high internal quantum efficiency of 78.12 %. Based on both theoretical and experimental results, the 3<em>d</em> energy-level diagram of Fe<sup>3+</sup> in NaAl<sub>11</sub>O<sub>17</sub> is constructed and discussed with crystal field strength analysis. The optimal NaAl<sub>11</sub>O<sub>17</sub>: Fe<sup>3+</sup> phosphor shows good thermal stability while keeping 87 and 45 % of room-temperature intensity at 373 and 473 K. A NIR pc-LED was fabricated and demonstrates applications in nondestructive detection and angiography. This hybrid investigation on Fe<sup>3+</sup>-doped NaAl<sub>11</sub>O<sub>17</sub> NIR-I phosphor could provide an insight for developing Fe<sup>3+</sup>-activated NIR luminescent materials with excellent performance and expanding their application prospects.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"80 ","pages":"Article 100551"},"PeriodicalIF":10.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145614851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-29DOI: 10.1016/j.progsolidstchem.2025.100552
Vennila Selvaraj , Baeksang Yoon , Suresh Sagadevan , Byoenghun Oh , Sangwon Noh , Dong Ick Son , Hyung-Kee Seo , Inseok Seo
The increasing demand for high-performance energy storage has intensified the pursuit of alternatives to conventional lithium-ion batteries. Lithium-sulfur (Li–S) batteries has been extensively used due to their high theoretical energy density (2600 Wh kg−1), low cost, and sulfur's environmental benefits. However, traditional Li–S systems face challenges including polysulfide shuttle effects, lithium dendrite formation, and limited cycle life. Incorporating solid-state electrolytes (SSEs) have enhanced the safety and stability by replacing flammable liquids. Recent progress in solid-state Li–S (SSLS) batteries includes development of high-conductivity SSEs (sulfide, halide, polymer-ceramic composites), electrodes provided with the volume changes and minimize interfacial resistance, and improved cathode architectures for optimized ion/electron transport. This review comprehensively analyzes the development in solid-state lithium-sulfur (SSLS) batteries over the past decade. SSLS development is driven by the potential for higher energy density and enhanced safety that have been essential for next-generation energy storage.This review also focuses on solid electrolytes as the key enabler for solid-state lithium-sulfur (SSLS) battery performance, addressing the challenges associated with liquid electrolytes such as flammability, polysulfide shuttle, and lithium dendrite formation. Finally, the review highlights the importance of integrated cell design, where optimized electrode architectures and advanced solid electrolytes work synergistically to maximize performance..
{"title":"Advances in solid-state lithium–sulfur batteries for next-generation energy storage","authors":"Vennila Selvaraj , Baeksang Yoon , Suresh Sagadevan , Byoenghun Oh , Sangwon Noh , Dong Ick Son , Hyung-Kee Seo , Inseok Seo","doi":"10.1016/j.progsolidstchem.2025.100552","DOIUrl":"10.1016/j.progsolidstchem.2025.100552","url":null,"abstract":"<div><div>The increasing demand for high-performance energy storage has intensified the pursuit of alternatives to conventional lithium-ion batteries. Lithium-sulfur (Li–S) batteries has been extensively used due to their high theoretical energy density (2600 Wh kg<sup>−1</sup>), low cost, and sulfur's environmental benefits. However, traditional Li–S systems face challenges including polysulfide shuttle effects, lithium dendrite formation, and limited cycle life. Incorporating solid-state electrolytes (SSEs) have enhanced the safety and stability by replacing flammable liquids. Recent progress in solid-state Li–S (SSLS) batteries includes development of high-conductivity SSEs (sulfide, halide, polymer-ceramic composites), electrodes provided with the volume changes and minimize interfacial resistance, and improved cathode architectures for optimized ion/electron transport. This review comprehensively analyzes the development in solid-state lithium-sulfur (SSLS) batteries over the past decade. SSLS development is driven by the potential for higher energy density and enhanced safety that have been essential for next-generation energy storage.This review also focuses on solid electrolytes as the key enabler for solid-state lithium-sulfur (SSLS) battery performance, addressing the challenges associated with liquid electrolytes such as flammability, polysulfide shuttle, and lithium dendrite formation. Finally, the review highlights the importance of integrated cell design, where optimized electrode architectures and advanced solid electrolytes work synergistically to maximize performance..</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"81 ","pages":"Article 100552"},"PeriodicalIF":10.5,"publicationDate":"2025-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145665540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-15DOI: 10.1016/j.progsolidstchem.2025.100550
Samir F. Matar , Alicia Castro , Jean Galy
This original work investigates the high-pressure behavior of BiF3 polymorphs, with emphasis on the stereochemical activity and spatial localization of the 6s2 lone electron pair (E) of Bi3+and the 2 s2 Es of fluoride anions. Using density functional theory (DFT) and electron localization function (ELF) analyses, we characterize the evolution of α-, β-, and γ-BiF3E polymorphs and report two novel high-pressure phases, δ-BiF3E and κ-BiF3E, stabilized at approximately 70 GPa and above 200 GPa, respectively. The β-phase undergoes a clear phase transition near 70 GPa, where structural gliding of fluorine layers induces a symmetry shift from Pnma to Cmcm space group, corresponding to the δ-BiF3E phase. The δ-phase features a base-centered orthorhombic framework with perichoretic localization of the Bi 6s2 lone pair in multiple spatial positions. At pressures exceeding 200 GPa, a previously unobserved polymorph, κ-BiF3E, emerges with a penta-capped triangular antiprismatic coordination environment and a distorted screw-axis symmetry.
In this paper “perichoresis” is introduced as an original conceptual tool to describe the simultaneous localization of lone pairs in multiple spatial domains without invoking electronic delocalization.
The results provide insight into the high-pressure stereochemistry of heavy p-block compounds and offer a predictive model for lone pair behavior under compression.
{"title":"Pressure-induced stereochemistry and lone pair (E) localization in BiF3: Ellipsoidal EBi 6s2 / EF 2s2 volumes, perichoresis, and phase transitions","authors":"Samir F. Matar , Alicia Castro , Jean Galy","doi":"10.1016/j.progsolidstchem.2025.100550","DOIUrl":"10.1016/j.progsolidstchem.2025.100550","url":null,"abstract":"<div><div>This original work investigates the high-pressure behavior of BiF<sub>3</sub> polymorphs, with emphasis on the stereochemical activity and spatial localization of the 6s<sup>2</sup> lone electron pair (E) of Bi<sup>3+</sup>and the 2 s<sup>2</sup> Es of fluoride anions. Using density functional theory (DFT) and electron localization function (ELF) analyses, we characterize the evolution of α-, β-, and γ-BiF<sub>3</sub>E polymorphs and report two novel high-pressure phases, δ-BiF<sub>3</sub>E and κ-BiF<sub>3</sub>E, stabilized at approximately 70 GPa and above 200 GPa, respectively. The β-phase undergoes a clear phase transition near 70 GPa, where structural gliding of fluorine layers induces a symmetry shift from <em>Pnma</em> to <em>Cmcm</em> space group, corresponding to the δ-BiF<sub>3</sub>E phase. The δ-phase features a base-centered orthorhombic framework with perichoretic localization of the Bi 6s<sup>2</sup> lone pair in multiple spatial positions. At pressures exceeding 200 GPa, a previously unobserved polymorph, κ-BiF<sub>3</sub>E, emerges with a penta-capped triangular antiprismatic coordination environment and a distorted screw-axis symmetry.</div><div>In this paper “perichoresis” is introduced as an original conceptual tool to describe the simultaneous localization of lone pairs in multiple spatial domains without invoking electronic delocalization.</div><div>The results provide insight into the high-pressure stereochemistry of heavy p-block compounds and offer a predictive model for lone pair behavior under compression.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"80 ","pages":"Article 100550"},"PeriodicalIF":10.5,"publicationDate":"2025-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145568439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-18DOI: 10.1016/j.progsolidstchem.2025.100549
Zhe-Hao Lin , Yu-Chun Wu
{"title":"Capping stabilization mechanism of vanadate-stabilized δ-Bi2O3: Experimental and theoretical approaches","authors":"Zhe-Hao Lin , Yu-Chun Wu","doi":"10.1016/j.progsolidstchem.2025.100549","DOIUrl":"10.1016/j.progsolidstchem.2025.100549","url":null,"abstract":"","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"80 ","pages":"Article 100549"},"PeriodicalIF":10.5,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145358902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
For the first time, polycrystalline samples of Co7(Se1–yTey)8 were synthesized in the entire concentration range (0 ≤ y ≤ 1) and studied by X-ray diffraction, scanning electron microscopy, and by thermal expansion, specific heat capacity and electrical resistivity measurements. Depending on the concentration of tellurium, the solid-phase reaction method (at y < 0.9) and melting method (at y ≥ 0.9) were used to obtain single-phase samples. A change in the crystal structure (P3121 → P-3m1 → P63/mmc → P-3m1) due to the disordering of vacancies, significant anisotropy of the thermal atomic displacement, and anisotropic lattice expansion have been observed in this system when selenium is substituted with tellurium. According to specific heat measurements, an increase in tellurium concentration is accompanied by a decrease in the electronic specific heat coefficient, which indicates an increase in the metallicity of the system and is confirmed by electrical resistivity data. In substituted compounds using thermal expansion and temperature-dependent X-ray diffraction, spinodal decomposition of samples was detected upon heating. The second phase in dendritic form was observed using scanning electron microscopy on the surface of slowly cooled tellurium-rich sample.
{"title":"Synthesis, structure and properties of substituted cobalt chalcogenides Co7(Se,Te)8","authors":"D.F. Akramov , N.V. Selezneva , E.M. Sherokalova , D.K. Kuznetsov , V.A. Kazantsev , N.V. Baranov","doi":"10.1016/j.progsolidstchem.2025.100548","DOIUrl":"10.1016/j.progsolidstchem.2025.100548","url":null,"abstract":"<div><div>For the first time, polycrystalline samples of Co<sub>7</sub>(Se<sub>1–<em>y</em></sub>Te<sub><em>y</em></sub>)<sub>8</sub> were synthesized in the entire concentration range (0 ≤ <em>y</em> ≤ 1) and studied by X-ray diffraction, scanning electron microscopy, and by thermal expansion, specific heat capacity and electrical resistivity measurements. Depending on the concentration of tellurium, the solid-phase reaction method (at <em>y</em> < 0.9) and melting method (at <em>y</em> ≥ 0.9) were used to obtain single-phase samples. A change in the crystal structure (<em>P</em>3<sub>1</sub>21 → <em>P</em>-3<em>m</em>1 → <em>P</em>6<sub>3</sub>/<em>mmc</em> → <em>P</em>-3<em>m</em>1) due to the disordering of vacancies, significant anisotropy of the thermal atomic displacement, and anisotropic lattice expansion have been observed in this system when selenium is substituted with tellurium. According to specific heat measurements, an increase in tellurium concentration is accompanied by a decrease in the electronic specific heat coefficient, which indicates an increase in the metallicity of the system and is confirmed by electrical resistivity data. In substituted compounds using thermal expansion and temperature-dependent X-ray diffraction, spinodal decomposition of samples was detected upon heating. The second phase in dendritic form was observed using scanning electron microscopy on the surface of slowly cooled tellurium-rich sample.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"80 ","pages":"Article 100548"},"PeriodicalIF":10.5,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145109780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-10DOI: 10.1016/j.progsolidstchem.2025.100547
Sergey V. Krivovichev
The tendency of crystal-structure symmetry increasing under increasing temperature (also known as a ‘Landau rule’) is one of the major empirical observations with regard to the temperature-induced phase transitions. The validity of the rule was investigated by means of the statistical analysis of the 502 temperature-driven phase transitions in inorganic compounds with known crystal-structure information for all polymorphs. The analysis was performed from the viewpoint of symmetry considerations (that is, the analysis in terms of the crystal-system hierarchy, where cubic system is the highest and triclinic is the lowest) and information-entropy calculations. It was revealed that the information-based structural complexity parameters (most importantly, the total information content per reduced unit cell) are more sensitive structural symmetry indicators than the symmetry classification in terms of the crystal-system hierarchy. The information-entropy measures decrease under increasing temperature in more than 77 % of phase transitions under consideration, which corresponds to the overall rise of symmetry under heating (the ‘Landau rule’). In contrast, the simple symmetry analysis confirms the ‘Landau rule’ in 60 % of cases only. The information-based parameters are especially efficient for the cases, when crystal system does not change (most numerous are monoclinic-monoclinic and orthorhombic-orthorhombic transitions). The deviations from the rule of increasing symmetry correspond to: phase transition sequences with intermediate (transitional) structures of high complexity, isosymmetric and reentrant phase transitions, and transitions that involve low-temperature metastable polymorphs. There are some exceptions that cannot be assigned to any of the phase-transition types mentioned above, where symmetry is decreasing under heating. The symmetry breaking results in the decrease in vibrational entropy, which may be considered as a major driving force behind the ‘Landau rule’. However, various phenomena such as formation and breaking of bonds, charge and orbital ordering, stereoactive activity of lone electron pairs, etc., may seriously influence polymorphic transformations under temperature changes.
{"title":"Temperature-induced structural phase transitions in inorganic compounds: symmetry and information-entropy analysis","authors":"Sergey V. Krivovichev","doi":"10.1016/j.progsolidstchem.2025.100547","DOIUrl":"10.1016/j.progsolidstchem.2025.100547","url":null,"abstract":"<div><div>The tendency of crystal-structure symmetry increasing under increasing temperature (also known as a ‘Landau rule’) is one of the major empirical observations with regard to the temperature-induced phase transitions. The validity of the rule was investigated by means of the statistical analysis of the 502 temperature-driven phase transitions in inorganic compounds with known crystal-structure information for all polymorphs. The analysis was performed from the viewpoint of symmetry considerations (that is, the analysis in terms of the crystal-system hierarchy, where cubic system is the highest and triclinic is the lowest) and information-entropy calculations. It was revealed that the information-based structural complexity parameters (most importantly, the total information content per reduced unit cell) are more sensitive structural symmetry indicators than the symmetry classification in terms of the crystal-system hierarchy. The information-entropy measures decrease under increasing temperature in more than 77 % of phase transitions under consideration, which corresponds to the overall rise of symmetry under heating (the ‘Landau rule’). In contrast, the simple symmetry analysis confirms the ‘Landau rule’ in 60 % of cases only. The information-based parameters are especially efficient for the cases, when crystal system does not change (most numerous are monoclinic-monoclinic and orthorhombic-orthorhombic transitions). The deviations from the rule of increasing symmetry correspond to: phase transition sequences with intermediate (transitional) structures of high complexity, isosymmetric and reentrant phase transitions, and transitions that involve low-temperature metastable polymorphs. There are some exceptions that cannot be assigned to any of the phase-transition types mentioned above, where symmetry is decreasing under heating. The symmetry breaking results in the decrease in vibrational entropy, which may be considered as a major driving force behind the ‘Landau rule’. However, various phenomena such as formation and breaking of bonds, charge and orbital ordering, stereoactive activity of lone electron pairs, etc., may seriously influence polymorphic transformations under temperature changes.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"80 ","pages":"Article 100547"},"PeriodicalIF":10.5,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-08DOI: 10.1016/j.progsolidstchem.2025.100546
Ehtisham Umar , Fozia Shaheen , M. Waqas Iqbal , Mohammed T. Alotaibi , Amel Ayari-Akkari , Ali Akremi , Eman Kashita
The development of nanostructured electrode materials for supercapacitors and green energy applications remains a challenging task, particularly in achieving maximum surface area for optimal electrode-electrolyte interaction. In this study, we synthesize interconnected nanostructured NiCo2O4/g-C3N4 using a cost-effective hydrothermal method. The NiCo2O4/g-C3N4 nanocomposite undergoes comprehensive characterization to analyze its structural, morphological, and electrochemical properties using various techniques. Electrodes fabricated from the NiCo2O4/g-C3N4 material exhibit a high specific capacity (Qs) of 203 C/g. Additionally, the as-fabricated asymmetric supercapacitor (ASC) achieves a remarkable energy density (Ed) of 87.3 Wh/kg and a power density (Pd) of 1038 W/kg at 1.4 A/g, with superior cycling performance, retaining 95.04 % of its capacity after 10,000 cycles. Furthermore, we evaluate the modified NiCo2O4/g-C3N4 electrodes for their electrocatalytic performance in the oxygen evolution reaction (OER), and hydrogen evolution reaction (HER). The results indicate that the NiCo2O4/g-C3N4 electrode exhibits the best OER performance (overpotential (η) = 287 mV and Tafel slope = 121 mV/dec at 10 mA/cm2) and demonstrates excellent HER activity (η = 336 mV and Tafel slope = 93 mV/dec at −10 mA/cm2) with exceptional cyclic stability. This research highlights the potential of NiCo2O4/g-C3N4 as a promising material for supercapacitor and green energy technology.
{"title":"Plate-like NiCo2O4 integrated with g-C3N4 nanostructures for hybrid supercapacitors and green energy technologies","authors":"Ehtisham Umar , Fozia Shaheen , M. Waqas Iqbal , Mohammed T. Alotaibi , Amel Ayari-Akkari , Ali Akremi , Eman Kashita","doi":"10.1016/j.progsolidstchem.2025.100546","DOIUrl":"10.1016/j.progsolidstchem.2025.100546","url":null,"abstract":"<div><div>The development of nanostructured electrode materials for supercapacitors and green energy applications remains a challenging task, particularly in achieving maximum surface area for optimal electrode-electrolyte interaction. In this study, we synthesize interconnected nanostructured NiCo<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> using a cost-effective hydrothermal method. The NiCo<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> nanocomposite undergoes comprehensive characterization to analyze its structural, morphological, and electrochemical properties using various techniques. Electrodes fabricated from the NiCo<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> material exhibit a high specific capacity (Qs) of 203 C/g. Additionally, the as-fabricated asymmetric supercapacitor (ASC) achieves a remarkable energy density (Ed) of 87.3 Wh/kg and a power density (Pd) of 1038 W/kg at 1.4 A/g, with superior cycling performance, retaining 95.04 % of its capacity after 10,000 cycles. Furthermore, we evaluate the modified NiCo<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> electrodes for their electrocatalytic performance in the oxygen evolution reaction (OER), and hydrogen evolution reaction (HER). The results indicate that the NiCo<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> electrode exhibits the best OER performance (overpotential (<em>η</em>) = 287 mV and Tafel slope = 121 mV/dec at 10 mA/cm<sup>2</sup>) and demonstrates excellent HER activity (<em>η</em> = 336 mV and Tafel slope = 93 mV/dec at −10 mA/cm<sup>2</sup>) with exceptional cyclic stability. This research highlights the potential of NiCo<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> as a promising material for supercapacitor and green energy technology.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"80 ","pages":"Article 100546"},"PeriodicalIF":10.5,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-03DOI: 10.1016/j.progsolidstchem.2025.100545
Defei Li, Ming-Chun Zhao, Tong Yuan, Ke Cui, Fuqin Zhang
Sodium/potassium ion batteries (SIBs/PIBs), emerging as promising alternatives to lithium-ion batteries (LIBs), show great potential in large-scale electrical energy storage systems owing to their abundant reserves, potential cost advantages, and low standard redox potentials. In recent years, Bi-Sb alloys and their chalcogenide compounds (sulfides, selenides, and tellurides) have garnered significant attention due to their unique bimetallic synergistic effects and tunable energy storage mechanisms. This paper reviews the recent progress in Bi-Sb alloys and their chalcogenide compounds as anode materials for SIBs and PIBs. Highlighting the synergistic effects of Bi-Sb systems, the study emphasizes their high theoretical capacity, reduced volume expansion, and enhanced structural stability compared to monometallic counterparts. Key strategies such as nano-structuring (e.g., nanoporous and 2D layered architectures), composite engineering (e.g., carbon-based matrices), and heterostructure design are discussed to address challenges like electrode pulverization. The electrochemical mechanisms, including multi-step alloying and conversion reactions, are analyzed to elucidate performance enhancements in terms of cycling stability, rate capability, and capacity retention. Specifically, the paper examines the structural properties, modification strategies, and performance optimization mechanisms of these materials, and identifies key pathways for their engineering applications, aiming to provide theoretical support and technological references for designing high-capacity anode materials for SIBs/PIBs. Additionally, critical issues, challenges, and prospects for further development are suggested. This work provides critical insights into material design principles and offers pathways for developing next-generation, cost-effective energy storage technologies.
{"title":"Insight into Bi-Sb alloys and their chalcogenide compounds for sodium/potassium ion battery (SIB/PIB) anodes","authors":"Defei Li, Ming-Chun Zhao, Tong Yuan, Ke Cui, Fuqin Zhang","doi":"10.1016/j.progsolidstchem.2025.100545","DOIUrl":"10.1016/j.progsolidstchem.2025.100545","url":null,"abstract":"<div><div>Sodium/potassium ion batteries (SIBs/PIBs), emerging as promising alternatives to lithium-ion batteries (LIBs), show great potential in large-scale electrical energy storage systems owing to their abundant reserves, potential cost advantages, and low standard redox potentials. In recent years, Bi-Sb alloys and their chalcogenide compounds (sulfides, selenides, and tellurides) have garnered significant attention due to their unique bimetallic synergistic effects and tunable energy storage mechanisms. This paper reviews the recent progress in Bi-Sb alloys and their chalcogenide compounds as anode materials for SIBs and PIBs. Highlighting the synergistic effects of Bi-Sb systems, the study emphasizes their high theoretical capacity, reduced volume expansion, and enhanced structural stability compared to monometallic counterparts. Key strategies such as nano-structuring (e.g., nanoporous and 2D layered architectures), composite engineering (e.g., carbon-based matrices), and heterostructure design are discussed to address challenges like electrode pulverization. The electrochemical mechanisms, including multi-step alloying and conversion reactions, are analyzed to elucidate performance enhancements in terms of cycling stability, rate capability, and capacity retention. Specifically, the paper examines the structural properties, modification strategies, and performance optimization mechanisms of these materials, and identifies key pathways for their engineering applications, aiming to provide theoretical support and technological references for designing high-capacity anode materials for SIBs/PIBs. Additionally, critical issues, challenges, and prospects for further development are suggested. This work provides critical insights into material design principles and offers pathways for developing next-generation, cost-effective energy storage technologies.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"80 ","pages":"Article 100545"},"PeriodicalIF":10.5,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145005038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-24DOI: 10.1016/j.progsolidstchem.2025.100536
Xiaoying Hu, Bo Wang, Xiaotong Zhou, Junzhi Li
The controllable synthesis of high-entropy perovskite oxides and the modulation of their electronic structures are crucial for enhancing the electrochemical performance of supercapacitors. However, it remains challenging to regulate the electronic configuration of B-site elements via A-site doping. In this study, we have reconstructed the electron configuration of B-site elements in high-entropy perovskites through Sm doping, and obtained high-entropy perovskite oxides La1-xSmx (Mn0·2Fe0·2Co0·2Ni0·2Cr0.2)O3 (LaSmTMO3−x) with abundant valence states. The fabricated LaSmTMO3−0.2 exhibits high specific capacitance of 1367.3 F g−1 at 0.5 A g−1. Besides, the asymmetric supercapacitor (ASC) based on LaSmTMO3−0.2 exhibits an impressive energy density of 41.2 Wh kg−1 at a power density of 400 W kg−1, with a specific capacity retention of 87.1 % after 10000 cycles. The experimental results demonstrate that superior supercapacitor performance can be attributed to electron rearrangement induced by Sm doping, leading to the formation of active metal species with multiple oxidation states. Simultaneously, Sm doping significantly improves structural integrity, electronic conductivity, and ion transfer kinetics. This work emphasizes the importance of A-site regulation of high entropy perovskite oxides for improving electrochemical performance and provides A new direction for the design of perovskite oxides in energy storage and conversion systems.
高熵钙钛矿氧化物的可控合成及其电子结构的调制是提高超级电容器电化学性能的关键。然而，通过掺杂a位来调节b位元素的电子构型仍然具有挑战性。本研究通过Sm掺杂重建了高熵钙钛矿中b位元素的电子构型，得到了价态丰富的高熵钙钛矿氧化物La1-xSmx (Mn0·2Fe0·2Co0·2Ni0·2Cr0.2)O3 （LaSmTMO3−x）。制备的LaSmTMO3−0.2在0.5 A g−1时具有1367.3 F g−1的高比电容。此外，基于LaSmTMO3−0.2的非对称超级电容器（ASC）在功率密度为400 W kg−1时，能量密度为41.2 Wh kg−1，循环10000次后比容量保持率为87.1%。实验结果表明，优异的超级电容器性能可归因于Sm掺杂引起的电子重排，从而形成具有多种氧化态的活性金属。同时，Sm掺杂显著改善了结构完整性、电子导电性和离子转移动力学。本研究强调了高熵钙钛矿氧化物的A位调控对提高电化学性能的重要性，为钙钛矿氧化物在储能和转换系统中的设计提供了新的方向。
{"title":"Cation substitution enabled electron rearrangement in high-entropy perovskite oxides for enhanced supercapacitor performance","authors":"Xiaoying Hu, Bo Wang, Xiaotong Zhou, Junzhi Li","doi":"10.1016/j.progsolidstchem.2025.100536","DOIUrl":"10.1016/j.progsolidstchem.2025.100536","url":null,"abstract":"<div><div>The controllable synthesis of high-entropy perovskite oxides and the modulation of their electronic structures are crucial for enhancing the electrochemical performance of supercapacitors. However, it remains challenging to regulate the electronic configuration of B-site elements via A-site doping. In this study, we have reconstructed the electron configuration of B-site elements in high-entropy perovskites through Sm doping, and obtained high-entropy perovskite oxides La<sub>1-x</sub>Sm<sub>x</sub> (Mn<sub>0·2</sub>Fe<sub>0·2</sub>Co<sub>0·2</sub>Ni<sub>0·2</sub>Cr<sub>0.2</sub>)O<sub>3</sub> (LaSmTMO<sub>3</sub>−x) with abundant valence states. The fabricated LaSmTMO<sub>3</sub>−0.2 exhibits high specific capacitance of 1367.3 F g<sup>−1</sup> at 0.5 A g<sup>−1</sup>. Besides, the asymmetric supercapacitor (ASC) based on LaSmTMO<sub>3</sub>−0.2 exhibits an impressive energy density of 41.2 Wh kg<sup>−1</sup> at a power density of 400 W kg<sup>−1</sup>, with a specific capacity retention of 87.1 % after 10000 cycles. The experimental results demonstrate that superior supercapacitor performance can be attributed to electron rearrangement induced by Sm doping, leading to the formation of active metal species with multiple oxidation states. Simultaneously, Sm doping significantly improves structural integrity, electronic conductivity, and ion transfer kinetics. This work emphasizes the importance of A-site regulation of high entropy perovskite oxides for improving electrochemical performance and provides A new direction for the design of perovskite oxides in energy storage and conversion systems.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"79 ","pages":"Article 100536"},"PeriodicalIF":9.1,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144513655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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