Progress in Solid State Chemistry最新文献_第2页

Recent advance in preparation, applications and color regulation mechanism of cobalt blue pigment 钴蓝颜料的制备、应用及调色机理研究进展

IF 9.1 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Progress in Solid State Chemistry

Pub Date : 2025-06-07 DOI: 10.1016/j.progsolidstchem.2025.100535

Hao Yang , Bin Mu , Anjie Zhang , Aiqin Wang

Cobalt blue (CoAl₂O₄) pigment is a well-known high-end blue inorganic pigment with a spinel structure, and it is irreplaceable in the blue pigments either inorganic or organic ones due to its strong coloring performance, desirable blue chroma, and excellent chemical stability. Therefore, a series of strategies have been developed for the preparation of CoAl₂O₄ pigment including common solid-phase method, liquid-phase and gas-phase technologies to meet the requirements of different application fields. However, the relevant applications of CoAl₂O₄ pigment are restricted at a certain degree due to the high cost derived from the scarcity of cobalt sources as well as the aggregation of CoAl₂O₄ particles during the high-temperature crystallization process. Interestingly, incorporation of stable inorganic substrates facilitates the decrease in the production cost and the control of the size and blue intensity of CoAl₂O₄ nanoparticles, especially incorporation of natural or waste nonmetallic mineral resources. Therefore, this review provides an overview of the recent advance in the synthesis, relevant applications and color regulation mechanism of CoAl₂O₄ pigment combining with the literatures and our research achievements. It is mainly focused on the synthesis mechanism of different methods, and the relationships between the structures and the application performances, especially the structural composition and color performance of the designed CoAl₂O₄/silicate hybrid pigments. Finally, several suggestions are proposed for the future development trend on CoAl₂O₄ pigment and even other eco-friendly inorganic pigments.

钴蓝（CoAl2O4）颜料是一种知名的尖晶石结构高端蓝色无机颜料，其着色性能强、蓝色色度理想、化学稳定性好，在无机或有机蓝色颜料中都是不可替代的。因此，为了满足不同应用领域的需求，人们开发了一系列的策略来制备CoAl2O4颜料，包括常见的固相法、液相法和气相法。然而，由于钴源稀缺导致的高成本以及高温结晶过程中CoAl2O4颗粒的聚集，在一定程度上限制了其颜料的相关应用。有趣的是，稳定的无机基质的掺入有助于降低生产成本，控制CoAl2O4纳米颗粒的尺寸和蓝色强度，特别是掺入天然或废弃的非金属矿物资源。因此，本文结合文献和本人的研究成果，对近年来CoAl2O4颜料的合成、相关应用及调色机理等方面的研究进展进行综述。重点介绍了不同合成方法的合成机理、结构与应用性能之间的关系，特别是所设计的CoAl2O4/硅酸盐杂化颜料的结构组成和颜色性能。最后，对未来的发展趋势提出了建议，并对其他环保型无机颜料提出了建议。

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引用次数: 0

Quaternary transition metal dichalcogenides (M1-xNxX2(1-y)Y2y) for hydrogen evolution: A review on atomic structure, 3D engineering, and electrocatalytic performance 四元过渡金属二硫族化合物（M1-xNxX2(1-y)Y2y）析氢：原子结构、三维工程和电催化性能综述

IF 9.1 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Progress in Solid State Chemistry

Pub Date : 2025-05-31 DOI: 10.1016/j.progsolidstchem.2025.100532

Rohit Kumar , Rajni Thakur , Sahil Kumar , Shwetharani R , Bhari Mallana Nagaraja , Sunil Mehla , Itika Kainthla

Hydrogen is a clean, efficient, and sustainable alternative to fossil fuels, placing it at the forefront of our energy future. Water electrolysis is more sustainable and eco-friendlier alternative to fossil fuel-based hydrogen production processes. The earth abundance, low cost, high electrocatalytic activities, and stabilities of transition metal dichalcogenides (TMDs) in the hydrogen evolution reaction (HER) set them apart as exceptional electrocatalysts for hydrogen production. Quaternary TMDs have a general formula of M_1-xN_xX_2(1-y)Y_2y, where M and N are transition metals and X and Y are chalcogens. Thus, quaternary TMDs are versatile nanomaterials that exhibit tremendous potential for fine-tuning and optimizing their electrocatalytic performance through composition modulation, as shown by both theoretical and experimental studies. Additionally, additive manufacturing techniques such as 3D printing are emerging as powerful tools for fabricating structurally complex, compositionally tunable TMD-based electrodes with enhanced HER performance. The integration of 3D printing with advanced TMD synthesis methods enables the design of customized electrocatalysts, offering improved charge transport and catalytic activity for sustainable hydrogen production. To delve deeper into the composition-structure-activity relationships that govern the hydrogen evolution performance of quaternary TMDs, this review encapsulates a comprehensive account of the synthesis methods, atomic and electronic structures, properties, and electrocatalytic performance of quaternary TMDs. Furthermore, the unique challenges in using quaternary TMD electrocatalysts and the authors' perspective on their future potential in hydrogen production are elaborated.

氢是一种清洁、高效和可持续的化石燃料替代品，将其置于我们未来能源的最前沿。水电解是比化石燃料制氢工艺更可持续、更环保的替代品。在析氢反应（HER）中，过渡金属二硫族化合物（TMDs）具有丰富的稀土元素、低廉的成本、较高的电催化活性和稳定性，是一种特殊的制氢电催化剂。四元tmd的通式为M1-xNxX2(1-y)Y2y，其中M和N为过渡金属，X和Y为硫元。因此，理论和实验研究表明，四元tmd是一种多功能纳米材料，具有通过组成调制微调和优化其电催化性能的巨大潜力。此外，3D打印等增材制造技术正在成为制造结构复杂、成分可调、具有增强HER性能的tmd电极的强大工具。3D打印与先进的TMD合成方法的集成使定制电催化剂的设计成为可能，为可持续的氢气生产提供改进的电荷传输和催化活性。为了更深入地研究控制四元tmd析氢性能的组成-结构-活性关系，本文综述了四元tmd的合成方法、原子和电子结构、性质和电催化性能。此外，作者还阐述了使用四元TMD电催化剂的独特挑战，并对其在制氢方面的未来潜力进行了展望。

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引用次数: 0

Rare earth doped Zirconia: Structure, physicochemical properties and recent advancements in technological applications 稀土掺杂氧化锆：结构、理化性质及技术应用的最新进展

IF 9.1 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Progress in Solid State Chemistry

Pub Date : 2025-05-29 DOI: 10.1016/j.progsolidstchem.2025.100524

S. Kalaivani, M. Ezhilan, M. Deepa, S. Kannan

Zirconia (ZrO₂) based ceramics have been pivotal in the evolution of materials across various applications. Particularly, rare earth (RE) doped ZrO₂ is of greater interest due to its remarkable thermal stability, mechanical strength, and ionic conductivity, which are primarily influenced by its distinct solid state properties. This review aims to deliver a comprehensive analysis of the structural features induced by RE doping, with a particular emphasis on the phase transitions and stability of the various polymorphs of ZrO₂. The relationship between the ionic size of RE, oxygen vacancies and microstructural behavior is explored in the context of lattice distortion and thermodynamic stabilization. The review highlights the critical role of doping strategies in the varying microstructure and enhancing the performance of ZrO₂ based materials. Emerging applications such as solid oxide fuel cells, thermal barrier coatings, bioceramics and optical devices necessitate a comprehensive understanding of fundamental solid state properties to ensure their effective operation. Additionally, future research directions are suggested to facilitate the development of next generation ZrO₂ based systems, with a focus on enhancing their structural and functional performance.

氧化锆（ZrO2）基陶瓷在各种应用材料的发展中起着关键作用。特别是，稀土（RE）掺杂的ZrO2由于其显著的热稳定性，机械强度和离子电导率而引起了更大的兴趣，这些主要受其独特的固态性质的影响。本文旨在全面分析稀土掺杂引起的ZrO2的结构特征，特别强调了ZrO2各种多晶的相变和稳定性。在晶格畸变和热力学稳定的背景下，探讨了稀土离子大小、氧空位和微观结构行为之间的关系。综述强调了掺杂策略在改变ZrO2基材料的微观结构和提高其性能方面的关键作用。诸如固体氧化物燃料电池、热障涂层、生物陶瓷和光学器件等新兴应用需要全面了解基本的固态特性，以确保其有效运行。展望了未来的研究方向，以促进下一代基于ZrO2的系统的发展，重点是提高其结构和功能性能。

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引用次数: 0

Integration of non-Ti3C2 MXene with carbon-based materials for energy storage devices: Recent advancements and future aspects 非ti3c2 MXene与碳基材料集成用于储能设备：最新进展和未来展望

IF 9.1 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Progress in Solid State Chemistry

Pub Date : 2025-05-24 DOI: 10.1016/j.progsolidstchem.2025.100523

Iftikhar Hussain , Karanpal Singh , Avinash C. Mendhe , Mohammad R. Thalji , Soumen Mandal , Ijaz Ali , Ahmed F.M. EL-Mahdy , P. Rosaiah , Muhammad Kashif Aslam , Tensangmu Lama Tamang , Kaili Zhang

MXenes find practical use in electrochemical systems, particularly in energy storage devices like supercapacitors and batteries. Notably, Ti₃C₂ MXene has been extensively studied, but also non-Ti₃C₂ MXene materials have shown promising properties in energy storage applications. Non-Ti₃C₂ MXenes, when combined with carbonaceous materials like activated carbon, carbon nanotubes, graphene, etc. exhibit superior specific capacitance, excellent rate capability, and higher electrical conductivity, making them attractive for supercapacitors and batteries. Herein, the incorporation of non-Ti₃C₂ MXenes with various carbon materials in energy storage systems has been discussed, showing potential for enhancing the overall electrochemical performance. Strategies to enhance the interaction between non-Ti₃C₂ MXenes and carbon materials have been summarized to tackle challenges and capitalize on opportunities for more efficient and sustainable energy storage technologies.

MXenes在电化学系统中有实际应用，特别是在超级电容器和电池等能量存储设备中。值得注意的是，Ti3C2 MXene已经得到了广泛的研究，但非Ti3C2 MXene材料在储能应用中也显示出了很好的性能。当非ti3c2 MXenes与活性炭、碳纳米管、石墨烯等碳质材料结合时，表现出优异的比电容、优异的倍率能力和更高的导电性，使其成为超级电容器和电池的理想材料。本文讨论了非ti3c2 MXenes与各种碳材料在储能系统中的结合，显示出提高整体电化学性能的潜力。本文总结了增强非ti3c2 MXenes与碳材料之间相互作用的策略，以应对挑战并利用更高效和可持续的储能技术的机遇。

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引用次数: 0

Study on novel blue-purple high-NIR reflectance pigments and acrylic coatings based on Ca2Zn1-xMxSi2O7 (M = Mn and Ni) 基于Ca2Zn1-xMxSi2O7 （M = Mn和Ni）的新型蓝紫色高近红外反射颜料及丙烯酸涂料的研究

IF 9.1 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Progress in Solid State Chemistry

Pub Date : 2025-05-23 DOI: 10.1016/j.progsolidstchem.2025.100522

Zhiwei Wang , Yinan Shen , Liangsheng Tian , Suwit Suthirakun , Wongsathorn Kaewraung , Qi Menghang , Hang Zhao , Xin Xin , Ruoxiu Xiao , Peng Jiang , Qu Li , Tingting Lu

The coating optimized with high near-infrared reflectance pigments can effectively reduce the energy consumption for heating and cooling in buildings, thereby alleviating the pressure on global energy consumption. Using a high-temperature solid-state method, blue-violet pigments with high near-infrared reflectance, Ca₂Zn_1-xM_xSi₂O₇ (M = Mn, 0 ≤ x ≤ 0.4 and Ni, 0 ≤ x ≤ 0.2) solid solutions, were synthesized for the first time, with a maximum solar reflectance of 82.67%. Using XPS analysis, it was determined that the oxidation state of Ni in the pigment is +2, while Mn exists in mixed oxidation states of +2 and +3. UV-VIS-NIR spectroscopy analysis indicates that the blue-violet color of the pigment originates from the d-d transitions of the transition metal ions. As the doping concentration increases, the near-infrared reflectance of the pigment decreases. The DFT calculations have also confirmed that the color of pigments originates from transition metal ions. The as-synthesized pigments were incorporated into acrylic to create colored coatings. Improving the near-infrared solar reflectance of the acrylic coating. The excellent high near-infrared solar reflectance and coating property optimization make the synthesized pigment a potential energy-saving coating.

采用高近红外反射率颜料优化的涂料，可以有效降低建筑的供暖和制冷能耗，从而缓解全球能源消耗压力。采用高温固相法首次合成了具有高近红外反射率的蓝紫色颜料Ca2Zn1-xMxSi2O7 （M = Mn, 0≤x≤0.4,Ni, 0≤x≤0.2）固溶体，最大太阳反射率为82.67%。通过XPS分析，确定了Ni在颜料中的氧化态为+2，Mn以+2 +3的混合氧化态存在。紫外-可见-近红外光谱分析表明，颜料的蓝紫色源于过渡金属离子的d-d跃迁。随着掺杂浓度的增加，颜料的近红外反射率降低。DFT计算也证实了颜料的颜色来源于过渡金属离子。合成的颜料被掺入丙烯酸制成彩色涂料。提高丙烯酸涂料的近红外太阳反射率。优异的高近红外太阳反射率和涂层性能优化使合成的颜料成为一种有潜力的节能涂料。

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引用次数: 0

Atomically dispersed Pt and Pt clusters on CeO2 supports for H2 production via low-temperature water-gas shift reaction 在CeO2载体上原子分散的Pt和Pt团簇通过低温水气转换反应制氢

IF 9.1 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Progress in Solid State Chemistry

Pub Date : 2025-04-29 DOI: 10.1016/j.progsolidstchem.2025.100520

Liping Du, Aishu Li, Song Hu, Sheng Su, Yi Wang, Long Jiang, Jun Xu, Kai Xu, Jun Xiang

Water-gas shift (WGS) reaction plays a crucial role in the steam reforming of carbon-based fuels for hydrogen production. Pt-CeO₂ catalysts have attracted significant attention due to their excellent low-temperature activity, and optimizing the catalytic system performance is essential for reducing energy consumption. In this study, we investigated the impact of metal dispersion differences on the catalytic activity of CeO₂-supported clusters and atomically dispersed Pt catalysts from the perspectives of oxygen vacancies and metal-support interactions. The results indicated that the adsorption capacity of CO on the catalyst surface was significantly influenced by the oxidation state and aggregation of Pt, with atomically dispersed Pt⁰ exhibiting a stronger affinity for CO. The metal-support interaction was evident in the formation of Pt-O-Ce composite bonds resulting from the incorporation of Pt ions into the CeO₂ lattice, which enhanced Pt accessibility on the CeO₂ surface. All samples demonstrated outstanding catalytic performance, achieving CO conversion exceeding 70 % and H₂ yield surpassing 150 mL g⁻¹ at low temperatures. The IMP-Pt characterized by an elevated oxygen vacancy concentrations (OVC) of 3.99 × 10²¹ cm⁻³, arising from partially reduced Ce³⁺ in unsaturated coordination states, exhibited a ∼10 % decline in CO conversion and a ∼20 °C increase in T₅₀. Undercoordinated Pt clusters led to strong CO binding and high CO vibration frequencies, while the presence of Pt^δ+ weakened CO adsorption but promoted carbonation reactions. The superior lattice oxygen mobility and dynamic oxygen storage capacity of atomically dispersed Pt-CeO₂ catalysts resulted in faster calculated reaction rates on exposed Pt atoms and higher turnover frequencies.

水气转换反应在碳基燃料的蒸汽重整制氢过程中起着至关重要的作用。Pt-CeO2催化剂因其优异的低温活性而备受关注，优化催化体系性能对降低能耗至关重要。在这项研究中，我们从氧空位和金属-载体相互作用的角度研究了金属分散差异对ceo2负载簇和原子分散Pt催化剂催化活性的影响。结果表明，Pt的氧化态和聚集对CO在催化剂表面的吸附能力有显著影响，原子分散的Pt0对CO具有更强的亲和力。由于Pt离子进入CeO2晶格，形成Pt- o - ce复合键，从而增强了Pt在CeO2表面的可及性，金属-载体相互作用明显。所有样品均表现出优异的催化性能，在低温下CO转化率超过70%，H2产率超过150 mL g - 1。由于Ce3+在不饱和配位态的部分还原，IMP-Pt的氧空位浓度（OVC）提高了3.99 × 1021 cm−3，CO转化率下降了~ 10%，T50升高了~ 20°C。Ptδ+的存在削弱了CO的吸附，但促进了碳化反应的发生。原子分散Pt- ceo2催化剂优越的晶格氧迁移率和动态氧存储能力使得暴露Pt原子的计算反应速率更快，周转频率更高。

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引用次数: 0

Original mechanism of transformation from soft metallic (sp2/sp3) C12 to ultra-dense and ultra-hard (sp3) semi-conducting C12: Crystal chemistry and DFT characterizations 软金属（sp2/sp3） C12向超致密超硬（sp3）半导体C12转变的原始机理：晶体化学和DFT表征

IF 9.1 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Progress in Solid State Chemistry

Pub Date : 2025-04-29 DOI: 10.1016/j.progsolidstchem.2025.100521

Samir F. Matar

An original mechanism is proposed for a pressure-induced transformation of orthorhombic C₁₂ from ground state normal pressure (NP) sp²/sp³ allotrope to ultra-dense and ultra-hard high pressure HP sp³ form. Upon volume decrease, the trigonal CC parallel segments characterizing glitter-like tfi topology of NP C₁₂ change to crossing C–C segments with the loss of sp² character accompanied by a large densification with ρ = 3.64 g/cm³, larger than diamond, defining a novel orthorhombic HP C₁₂ with 4⁴T39 topology. The crystal chemistry engineering backed with quantum density functional theory DFT-based calculations let determine the ground state structures and energy derived physical properties. Furthering on that, the E(V) equations of states (EOS) let define the equilibrium NP(E₀,V₀) allotrope at lower energy and higher volume versus HP(E₀,V₀) allotrope at higher energy and smaller volume. A potential pressure induced transformation NP→HP was estimated at ∼100 GPa, reachable with a diamond anvil cell DAC. Both allotropes were found cohesive and mechanically stable with low and large Vickers hardness magnitudes: H_V(tfi C₁₂) = 24 GPa and H_V(4⁴T39 C₁₂) = 90 GPa; the latter being close to diamond hardness (H_V ∼95 GPa). Besides, both allotropes were found dynamically stable with positive phonon frequencies and a spectroscopic signature of CC high frequency bands in tfi C₁₂. The electronic band structures show a metallic behavior for NP tfi C₁₂ and a small band gap for HP 4⁴T39C₁₂ letting assign semiconducting properties. The work is meant to open further the scope of C (sp²)→C (sp³) transformation mechanisms that are fundamental in solid state physics and chemistry.

提出了一种压力诱导正交C12从基态常压（NP） sp2/sp3同素异形体向超致密超硬高压HP sp3形态转变的原始机制。当体积减小时，具有发光样tfi拓扑的三角形CC平行段转变为交叉C-C段，失去sp2特征，并伴随着比金刚石大的ρ = 3.64 g/cm3的大密度，定义了具有44T39拓扑的新型正交型HP C12。以量子密度泛函理论为基础的晶体化学工程计算可以确定基态结构和能量衍生的物理性质。在此基础上，E(V)状态方程（EOS）定义了低能量和高体积下的平衡NP（E0,V0）同素异形体与高能量和小体积下的平衡HP（E0,V0）同素异形体。潜在压力诱导的转化NP→HP估计在~ 100 GPa，用金刚石砧细胞DAC可以达到。两种同素异构体均具有黏合性和机械稳定性，维氏硬度大小分别为：HV(tfi C12) = 24 GPa和HV(44T39 C12) = 90 GPa；后者接近金刚石硬度（HV ~ 95 GPa）。此外，这两种同素异形体在tfi - C12中具有正声子频率和CC高频光谱特征的动态稳定性。电子能带结构显示出NP tfi C12的金属行为和HP 44T39C12的小带隙，使其具有半导体性质。这项工作旨在进一步打开C （sp2）→C （sp3）转化机制的范围，这是固态物理和化学的基础。

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引用次数: 0

Beyond graphene basics: A holistic review of electronic structure, synthesis strategies, properties, and graphene-based electrode materials for supercapacitor applications 超越石墨烯基础：电子结构，合成策略，性能和超级电容器应用的石墨烯基电极材料的全面审查

IF 9.1 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Progress in Solid State Chemistry

Pub Date : 2025-04-16 DOI: 10.1016/j.progsolidstchem.2025.100519

Sachin Kumar Yadav, Anil Kumar, Neeraj Mehta

This review presents a comprehensive analysis of graphene-based electrode materials for supercapacitor application, focusing on electronic structure, synthesis strategies, and key attributes. The remarkable 2D-structure of graphene, characterized by sp² hybridized carbon atoms, confers exceptional electronic mobility (100000 cm²V⁻¹s⁻¹), large specific surface area (2600 m²g^-1), and mechanical flexibility (2.4 ± 0.4 TPa), making it an ideal contender for next-generation energy storage devices. We have discussed various synthesis strategies, including CVD, mechanical exfoliation, and chemical reduction, emphasizing their impact on the electrochemical performance of graphene electrodes. The integration of graphene with other nanomaterials, such as metal oxides, TMDs, conducting polymers, and MXenes, is explored to enhance the specific capacitance, cycle stability, and energy density of supercapacitor electrode materials. This review also covers the tunable electronic properties of graphene, addressing charge transport, ion diffusion, and electrochemical performance, which are critical for efficient supercapacitor design. Graphene-based electrodes' flexibility and mechanical stability are examined, highlighting their role in wearable and portable electronic applications. Challenges such as large-scale production, electrode degradation, and cost-effectiveness are also discussed, offering potential solutions through innovative synthesis routes and composite material design. This review provides a holistic perspective on the current advancement of graphene-based electrode materials for supercapacitor applications.

本文综述了石墨烯基超级电容器电极材料的电子结构、合成策略和关键特性。石墨烯以sp2杂化碳原子为特征，具有卓越的电子迁移率（100,000 cm2V−1s−1），大比表面积（2600 m2g-1）和机械灵活性（2.4±0.4 TPa），使其成为下一代储能设备的理想竞争者。我们讨论了各种合成策略，包括CVD、机械剥离和化学还原，强调了它们对石墨烯电极电化学性能的影响。石墨烯与其他纳米材料，如金属氧化物、tmd、导电聚合物和MXenes的集成，以提高超级电容器电极材料的比电容、循环稳定性和能量密度。本综述还涵盖了石墨烯的可调谐电子特性，解决电荷传输，离子扩散和电化学性能，这是高效超级电容器设计的关键。研究了石墨烯基电极的灵活性和机械稳定性，强调了它们在可穿戴和便携式电子应用中的作用。还讨论了大规模生产、电极降解和成本效益等挑战，并通过创新合成路线和复合材料设计提供了潜在的解决方案。本文综述了石墨烯基超级电容器电极材料的研究进展。

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引用次数: 0

Elucidating interfacial behaviors of Li-ion argyrodites through μ-cavity electrode analysis 用μ腔电极分析阐明锂离子银柱石的界面行为

IF 9.1 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Progress in Solid State Chemistry

Pub Date : 2025-04-09 DOI: 10.1016/j.progsolidstchem.2025.100518

Orynbassar Mukhan , Yuvaraj Subramanian , Sharon Mugobera , Sung-Soo Kim , Kwang-Sun Ryu

In the current scenario, All-Solid-State Batteries (ASSBs) are one of the inevitable energy storage systems due to their high energy density and safety aspects. Nonetheless, they have some limitations in their implementation for high performance solid-state lithium batteries. Notably, the reactions at the electrode and electrolyte interface, which negatively affects the Li-ion transport. From this perspective, we prepared the renowned high ionic conductive solid electrolytes (Li₆PS₅Cl, Li_6.2P_0.8Si_0.2S₅Cl_0.5Br_0.5, Li_5.3PS_4.3Cl_1.7 and Li_5.3PS_4.3ClBr_0.7) using a ball milling process subsequent to calcination at appropriate temperatures. The prepared electrolytes exhibited ionic conductivity values of 4.5, 5.3, 9.0 and 15.9 mS cm⁻¹, respectively. Importantly, the electrode and electrolyte interface processes are examined through microcavity electrode system using our prepared electrolyte and LiNi_0.5Co_0.2Mn_0.3O₂ (NCM523) cathode. In this case, a single particle confined in a micro cavity electrode system, NCM523-Li_6.2P_0.8Si_0.2S₅Cl_0.5Br_0.5 exhibits the highest initial discharge capacity value of 5.27 nAh, and an even higher initial Coulombic efficiency of 87.9 % surpassing other micro electrode systems. This and the electrochemical kinetic parameters evaluated through the Tafel plot analysis confirm that Si substitution minimizes chemical side reactions at the interface. The electrochemical kinetic parameters reveal that Li_6.2P_0.8Si_0.2S₅Cl_0.5Br_0.5 electrolyte has high exchange current, low charge transfer resistance and high lithium diffusion coefficient values. This proves that a favorable interface was formed between the NCM523 and the SE, thereby resulting in high rate of lithium-ion exchange between the NCM523 and the SE. The comparative study confirms the electrochemical kinetics improved by the bromine and silicon incorporation in the Li-argyrodite structure and offers flexible Li-ion pathways for better electrochemical performances.

在当前情况下，全固态电池（assb）因其高能量密度和安全性而成为不可避免的储能系统之一。尽管如此，它们在实现高性能固态锂电池方面仍有一些局限性。值得注意的是，电极和电解质界面的反应对锂离子的输运产生了负面影响。从这个角度来看，我们在适当的温度下煅烧后采用球磨工艺制备了著名的高离子导电性固体电解质（Li6PS5Cl, Li6.2P0.8Si0.2S5Cl0.5Br0.5, Li5.3PS4.3Cl1.7和Li5.3PS4.3ClBr0.7）。制备的电解质离子电导率分别为4.5、5.3、9.0和15.9 mS cm−1。重要的是，利用制备的电解质和LiNi0.5Co0.2Mn0.3O2 （NCM523）阴极，通过微腔电极系统研究了电极和电解质的界面过程。在这种情况下，单个粒子被限制在微腔电极体系中，NCM523-Li6.2P0.8Si0.2S5Cl0.5Br0.5显示出最高的初始放电容量值5.27 nAh，并且比其他微电极体系具有更高的初始库仑效率（87.9%）。这与通过Tafel图分析评估的电化学动力学参数证实，Si取代最小化了界面上的化学副反应。电化学动力学参数表明，Li6.2P0.8Si0.2S5Cl0.5Br0.5电解质具有大的交换电流、低的电荷转移电阻和高的锂扩散系数值。这证明NCM523与SE之间形成了良好的界面，从而导致NCM523与SE之间的锂离子交换率高。通过对比研究，证实了溴和硅的掺入改善了锂银石结构的电化学动力学，并提供了柔性的锂离子通路以获得更好的电化学性能。

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引用次数: 0

Boosting photoluminescence of Ba5P6O20:Dy3+ phosphor through facile alkali charge compensation 通过易碱电荷补偿增强Ba5P6O20:Dy3+荧光粉的光致发光

IF 9.1 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Progress in Solid State Chemistry

Pub Date : 2025-02-24 DOI: 10.1016/j.progsolidstchem.2025.100517

Yiting Huang , Xiaoyang Zhao , Zibo Huang , Jingkai Quan , Youwen Tang , Chenyang Jia , Jianguo Jia , Jintao Xie , Yanqiong Shen , Jing Zhu

Trivalent dysprosium (Dy³⁺)-activated inorganic phosphors have become fascinating due to tunable yellow/white light emission. Nevertheless, the challenge for solid-state lighting utilization is achieving highly luminous efficiency and thermostability of Dy³⁺. In this study, a new Ba₅P₆O₂₀ (BPO) phosphor is developed via replacing Ba²⁺ with Dy³⁺. The luminescence behaviors in response to the occupancy sites and content of Dy³⁺ activators are thoroughly investigated. Subsequently, to enhance comprehensive luminescence performances, alkali metal ions are co-doped based on charge compensation strategy. Especially, the K⁺ compensation can induce that the luminous efficiency and intensity are increased by around 4 and 2 times, separately. Meanwhile, the high thermal quenching resistance and chromaticity shifting resistance for Dy³⁺ emissions are achieved. Finally, the optimized BPO:5%Dy³⁺,5%K⁺ sample is employed to obtain a satisfactory solid-state white lighting source.

三价镝（Dy3+）激活的无机荧光粉由于其可调谐的黄光/白光发射而受到人们的关注。然而，固态照明应用的挑战是实现高发光效率和热稳定性的Dy3+。本研究通过用Dy3+取代Ba2+，制备了一种新的Ba5P6O20 （BPO）荧光粉。研究了Dy3+激活剂的占据位置和含量对发光行为的影响。随后，基于电荷补偿策略，对碱金属离子进行共掺杂，以提高综合发光性能。其中，K+补偿可使发光效率提高约4倍，发光强度提高约2倍。同时，该材料具有较高的耐热猝灭性和耐色度漂移性。最后，采用优化后的BPO:5%Dy3+，5%K+样品获得了满意的固态白光光源。

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