Xiaofei Yue (, ), Qingqing Nie (, ), Jiajun Chen (, ), Shuwen Shen (, ), Jinkun Han (, ), Yabing Shan (, ), Wenxuan Wu (, ), Yuan Lin (, ), Xueting Zhou (, ), Ye Lu (, ), Laigui Hu (, ), Ran Liu (, ), Zhijun Qiu (, ), Chunxiao Cong (, )
{"title":"Anomalously ultra-strong anti-Stokes photoluminescence in submicrometer-thick van der Waals layered semiconductor PbI2","authors":"Xiaofei Yue \u0000 (, ), Qingqing Nie \u0000 (, ), Jiajun Chen \u0000 (, ), Shuwen Shen \u0000 (, ), Jinkun Han \u0000 (, ), Yabing Shan \u0000 (, ), Wenxuan Wu \u0000 (, ), Yuan Lin \u0000 (, ), Xueting Zhou \u0000 (, ), Ye Lu \u0000 (, ), Laigui Hu \u0000 (, ), Ran Liu \u0000 (, ), Zhijun Qiu \u0000 (, ), Chunxiao Cong \u0000 (, )","doi":"10.1007/s40843-024-3272-5","DOIUrl":"10.1007/s40843-024-3272-5","url":null,"abstract":"<div><p>Anti-Stokes photoluminescence (ASPL) in low-dimensional van der Waals (vdW) layered materials is becoming increasingly attractive for its potential in advanced applications such as optical cooling, sub-energy band detection and optoelectronic devices. While transition metal dichalcogenides (TMDCs), among the most studied vdW semiconductors for ASPL, exhibit a direct bandgap exclusively in their monolayer form. This characteristic results in a short light-matter interaction distance and thus low ASPL emission efficiency, which seriously impedes the advancement of ASPL in vdW layered materials. In contrast, transition metal halide lead iodide (PbI<sub>2</sub>), a vdW semiconductor with a direct bandgap in a wide range of thicknesses (⩾3 layers) superior to TMDCs, has shown promise for ASPL. However, the reported ASPL emission efficiency of PbI<sub>2</sub> is notably low. Moreover, scant research has focused on the rich ASPL emission states in PbI<sub>2</sub>, particularly concerning the assignment of these emission states. Here, through a designed thickness selection, we observed more detailed ASPL emissions in submicrometer-thick PbI<sub>2</sub> at room temperature, in addition to a series of previously unreported ASPL emission peaks that emerge at low temperatures. Importantly, the low-temperature ASPL of PbI<sub>2</sub> exhibits an approximate 1000-fold enhancement compared to that observed at room temperature. This significant enhancement is attributed to the transition from phonon-assisted one-photon absorption to two-step photon absorption induced by resonance absorption effect, as well as substantially reduced nonradiative decays at low temperatures. Our findings enhance the comprehensive understanding of ASPL in PbI<sub>2</sub>, holding great significance for the development of ASPL applications.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1022 - 1029"},"PeriodicalIF":6.8,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143717036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chen Yang (, ), Yuhuan Tan (, ), Zheyi Li (, ), Shan Liang (, ), Xi-Hua Guan (, ), Zhong-Jian Yang (, ), Shixun Lian (, ), Wenli Zhou (, )
{"title":"Modulating luminescence of K3AlF6:Mn4+ NCs via charge compensation and localized surface plasmon resonance effect","authors":"Chen Yang \u0000 (, ), Yuhuan Tan \u0000 (, ), Zheyi Li \u0000 (, ), Shan Liang \u0000 (, ), Xi-Hua Guan \u0000 (, ), Zhong-Jian Yang \u0000 (, ), Shixun Lian \u0000 (, ), Wenli Zhou \u0000 (, )","doi":"10.1007/s40843-024-3271-5","DOIUrl":"10.1007/s40843-024-3271-5","url":null,"abstract":"<div><p>The reduction in photoluminescence efficiency due to crystallite downsizing is a significant issue in Mn<sup>4+</sup> -doped fluoride nanomaterials, crucial for their application in full-color micro-LED displays. This study presents a strategy to enhance the photoluminescence efficiency of K<sub>3</sub>AlF<sub>6</sub>:Mn<sup>4+</sup> nanocrystals (NCs) by incorporating Mg<sup>2+</sup> for charge compensation and utilizing the plasmonic effect of Au nanorods. We found that Mg<sup>2+</sup> incorporation effectively reduced lattice defects, increasing photoluminescence intensity by 17% and internal quantum efficiency from 22.37% to 27.56%. Fabricating Au@SiO<sub>2</sub>/fluoride nanocomposites, we investigated how the SiO<sub>2</sub> spacer layer thickness, Au@SiO<sub>2</sub> resonance wavelength, and relative concentration affect photoluminescence properties. Optimizing the balance between Purcell and Förster resonance energy transfer effects further increased photoluminescence intensity by 25%, internal quantum efficiency to 32.09%, and external quantum efficiency from 14.20% to 18.05%. Additionally, we assessed the potential application of these nanocomposites in micro-LED display technology by examining nanocomposite-PMMA films. This work provides insights into the development of highly efficient red-emitting nanomaterials.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1047 - 1056"},"PeriodicalIF":6.8,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yunwen Bao (, ), Wei Hu (, ), Yiqing Zhou (, ), Zhongxian Qiu (, ), Jingxuan Zhang (, ), Jiaping Zhang (, ), Jiaren Du (, ), Shixun Lian (, )
{"title":"Realizing temperature-gated photochromic NaYTiO4:Bi3+ for a time–temperature indicator","authors":"Yunwen Bao \u0000 (, ), Wei Hu \u0000 (, ), Yiqing Zhou \u0000 (, ), Zhongxian Qiu \u0000 (, ), Jingxuan Zhang \u0000 (, ), Jiaping Zhang \u0000 (, ), Jiaren Du \u0000 (, ), Shixun Lian \u0000 (, )","doi":"10.1007/s40843-025-3279-0","DOIUrl":"10.1007/s40843-025-3279-0","url":null,"abstract":"<div><p>Time–temperature indicator (TTI) technologies enable real-time quality monitoring of perishable products during transportation–storage. Photochromic material-guided TTI offers significant benefits in terms of nondestructive and convenient visualization. However, photochromic materials with low-temperature-range dependency are rare, limiting the development of cryogenic temperature-responsive TTI methods. This work proposes a novel temperature-gated bicolor photochromic material. Using NaYTiO<sub>4</sub> as the matrix, which has a native blue color center related to the intrinsic deep trap, Bi<sup>3+</sup> ions are incorporated to create extremely shallow trap levels (100–230 K) along with an associated longwavelength absorption color center. By combining these two color centers with extended full-spectrum absorption, NaYTiO<sub>4</sub>:Bi<sup>3+</sup> converts to dark gray upon ultraviolet irradiation below 233 K. With increasing temperature, the trapped electrons in shallow traps are released first, and the color state becomes yellowish until it completely fades back to white above 573 K. The liberation of thermally activated charge carriers is positively correlated with the storage duration and the ambient temperature. For the first time, we realize a TTI method based on photochromic materials at extremely low temperatures, which allows for direct visualization of quality management for cryogenic products without further information extraction and conversion. This work demonstrates the significant ability of photochromic materials as advanced information-recording materials in the next generation of smart TTIs.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1064 - 1073"},"PeriodicalIF":6.8,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xinyu Hao (, ), Yiying Lan (, ), Shuiying Gao (, ), Xue Yang (, ), Rong Cao (, )
{"title":"Highly efficient photocatalytic generation of hydrogen peroxide via pyrene-anthraquinone structural covalent organic frameworks","authors":"Xinyu Hao \u0000 (, ), Yiying Lan \u0000 (, ), Shuiying Gao \u0000 (, ), Xue Yang \u0000 (, ), Rong Cao \u0000 (, )","doi":"10.1007/s40843-024-3266-5","DOIUrl":"10.1007/s40843-024-3266-5","url":null,"abstract":"<div><p>Covalent organic frameworks (COFs) constitute a novel category of porous materials that exhibit considerable promise for photocatalysis, particularly in the production of hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>). A novel COF distinguished by a pyrene-anthraquinone architecture (denoted as Py-DQ-COF) was successfully prepared through a solvothermal process. The pyrene moiety acts as an electron-rich component, while the anthraquinone moiety serves as its electron-deficient counterpart. The strategic integration of these two moieties as essential building blocks in the formation of a donor-acceptor type Py-DQ-COF structure facilitates the efficient separation of electron-hole pairs. By employing benzylamine as a sacrificial reagent and utilizing water as the solvent, this study meticulously explores the photocatalytic efficiency in the production of H<sub>2</sub>O<sub>2</sub>. Mechanistic investigations validate that the reaction proceeds through a two-step two-electron (2e<sup>−</sup>) oxygen reduction reaction pathway, culminating in an impressive H<sub>2</sub>O<sub>2</sub> yield of 15,207 µmol g<sup>−1</sup> h<sup>−1</sup>, significantly exceeding the yields associated with conventional sacrificial alcohols. Cyclic experiments further elucidate that the materials exhibit commendable stability and sustain high activity. This study introduces a new method for the identification of novel sacrificial agents, and integrates anthraquinone into COFs, thereby offering an efficient strategy to optimize the industrial anthraquinone process for H<sub>2</sub>O<sub>2</sub> production. Ultimately, it provides a valuable reference for the advancement of efficient and sustainable photocatalytic systems.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1145 - 1153"},"PeriodicalIF":6.8,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Bioinspired fabrication of graphene/PDMS composite materials for high-performance flexible pressure sensor","authors":"Dandan Xu \u0000 (, ), Peilin Zhou \u0000 (, ), Haibo Yu \u0000 (, ), Jianhang Chen \u0000 (, ), Ya Zhong \u0000 (, ), Hongji Guo \u0000 (, ), Xiuli Zhang \u0000 (, ), Yueqing Xia \u0000 (, ), Guangrui Xiang \u0000 (, ), Lianqing Liu \u0000 (, )","doi":"10.1007/s40843-024-3267-9","DOIUrl":"10.1007/s40843-024-3267-9","url":null,"abstract":"<div><p>Flexible pressure sensors show significant potential for applications in the fields of intelligent wearable devices, electronic skins, and health monitoring. However, the fast response saturation and high viscoelasticity of the flexible sensing materials often result in reduced sensitivity and increased response hysteresis, limiting the practical application of these sensors. Therefore, achieving flexible pressure sensors with both high sensitivity and wide detection range still remains great challenges. In this study, bioinspired by the forcesensitive sensing mechanism and physiological structure of human skin, we propose a low-cost flexible fabrication method for high-performance piezoresistive flexible pressure sensor based on graphene/polydimethylsiloxane (PDMS) composite materials. The results show that the sensor has an ultra-high sensitivity (321 kPa<sup>−1</sup>), wide detection range (0.01–1000 kPa), fast response time (29 ms), and exhibits stability over 5000 cycles. In addition, the successful detections and applications indicate the wide application prospect of the developed sensor in fields of health monitoring, human-machine interactions and intelligent robotic perception.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1184 - 1195"},"PeriodicalIF":6.8,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jiawei He (, ), Tianhao Chen (, ), Bin Yu (, ), He Zhang (, ), Zhenglin Jia (, ), Qianqian Lin (, ), Shaolong Gong (, )
{"title":"Near-infrared organic scintillators for efficient X-ray imaging via singlet and triplet to doublet energy transfer","authors":"Jiawei He \u0000 (, ), Tianhao Chen \u0000 (, ), Bin Yu \u0000 (, ), He Zhang \u0000 (, ), Zhenglin Jia \u0000 (, ), Qianqian Lin \u0000 (, ), Shaolong Gong \u0000 (, )","doi":"10.1007/s40843-025-3280-x","DOIUrl":"10.1007/s40843-025-3280-x","url":null,"abstract":"<div><p>Near-infrared (NIR) organic scintillating materials are in high demand in a variety of fields, such as radiography, X-ray radiation therapy, and medical diagnosis. However, efficient organic NIR materials with high X-ray absorption are rarely reported. Here, we developed NIR organic X-ray imaging scintillators based on a typical organic radical with emission from a spin doublet excited state. The energy transfer strategy from thermally activated delayed fluorescence (TADF) sensitizers to the radical emitter was exploited to enhance X-ray absorption capability. The optimized scintillators with an Au(III)-TADF complex as the sensitizer exhibited intense NIR radioluminescence peaking at 746 nm upon X-ray excitation. High-quality X-ray imaging with a high spatial resolution of 15.3 lp mm<sup>−1</sup> was demonstrated, suggesting great potential for real applications. This work provides an effective strategy for the development of NIR organic scintillators.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1057 - 1063"},"PeriodicalIF":6.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xinting Yang (, ), Xiaoqian Jiang (, ), Xinbo Ning (, ), Yubin Feng (, ), Wenlai Guo (, ), Chenke Wei (, ), Maja D. Nešić, Andrew K. Whittaker, Wenrui Qu (, ), Bai Yang (, ), Quan Lin (, )
{"title":"Skin-inspired conductive hydrogels with antibacterial and pro-angiogenic abilities customized for accelerating diabetic wound healing","authors":"Xinting Yang \u0000 (, ), Xiaoqian Jiang \u0000 (, ), Xinbo Ning \u0000 (, ), Yubin Feng \u0000 (, ), Wenlai Guo \u0000 (, ), Chenke Wei \u0000 (, ), Maja D. Nešić, Andrew K. Whittaker, Wenrui Qu \u0000 (, ), Bai Yang \u0000 (, ), Quan Lin \u0000 (, )","doi":"10.1007/s40843-024-3262-y","DOIUrl":"10.1007/s40843-024-3262-y","url":null,"abstract":"<div><p>Intense bacterial infection, long-term inflammatory infiltration, and inadequate vascularization make diabetic wounds non-healing. Endogenous electric fields are the basis of bioelectric signal conduction and have been shown to be the primary signal guiding cell migration and promoting tissue repair. Still, the disorder microenvironment of diabetic wounds may affect the functions of endogenous electric fields. Traditional wound dressings, such as gauzes and bandages, lead to unsatisfactory repair due to their limited infection management and inability to couple with endogenous electrical fields. In this study, we develop the PMQG hydrogel, a multifunctional hydrogel dressing with effective antibacterial properties and good electroactivity, made from acrylic acid, quaternary ammonium chitosan, and MXene nanosheets. Inspired by skin, the PMQG hydrogels have flexible mechanical properties matched to the skin, strong tissue adhesion, broad-spectrum antibacterial activity, and desirable conductivity, which could transmit electrical signals, facilitating cell migration, and thus promoting the process of wound repair. The PMQG hydrogels exhibited good antibacterial properties against <i>Escherichia coli</i> (<i>E. coli</i>), <i>Staphylococcus aureus</i> (<i>S. aureus</i>), and methicillin-resistant <i>S. aureus</i> (MRSA), effectively controlling the infection-induced inflammation. Furthermore, incorporating MXene nanosheets into the hydrogel network enhances its reactive oxygen species scavenging ability and provides biomimetic conductivity. These anti-inflammatory properties, combined with its conductivity, help regulate the microenvironment and rebuild the endogenous electric fields, facilitating cell migration, angiogenesis, and collagen deposition, leading to a remarkable 98% wound closure by day 15 in diabetic rats, thus demonstrating superior efficacy. This novel wound dressing is expected to be an ideal therapeutic strategy for diabetic wound healing.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1271 - 1284"},"PeriodicalIF":6.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hang Li (, ), Zehao Wang (, ), Hongyi Tu (, ), Min Chen (, ), Yi Wu (, ), Limin Wu (, )
{"title":"Leaf vein-inspired transparent superhydrophobic coatings with high stability","authors":"Hang Li \u0000 (, ), Zehao Wang \u0000 (, ), Hongyi Tu \u0000 (, ), Min Chen \u0000 (, ), Yi Wu \u0000 (, ), Limin Wu \u0000 (, )","doi":"10.1007/s40843-024-3269-6","DOIUrl":"10.1007/s40843-024-3269-6","url":null,"abstract":"<div><p>Transparent superhydrophobic coatings hold significant potential for applications in architectural glass and optoelectronic devices. However, obtaining good compatibility between highly transparent, low haze and excellent mechanical stability in a superhydrophobicity coating remains a significant challenge. Inspired by the natural protection mechanism of the hierarchical structure of leaf veins, we have designed and fabricated transparent superhydrophobic coatings with highly detailed hierarchical vein-like ridges via a template-assisted multi-mask photolithography and inverted mold process combined with a spraying technique. The coated glass exhibited not only outstanding superhydrophobicity, with contact angle ⩾ 160° and sliding angle ⩽ 1.5° but also a high optical transmittance of 88.4% and a low haze of 8.1%, as well as remarkable mechanical durability and weather resistance.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1203 - 1211"},"PeriodicalIF":6.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Bioinspired chiral photonic crystals","authors":"Jiawei Lv \u0000 (, ), Xiaoqing Gao \u0000 (, ), Zhiyong Tang \u0000 (, )","doi":"10.1007/s40843-024-3264-7","DOIUrl":"10.1007/s40843-024-3264-7","url":null,"abstract":"<div><p>Structural coloration strategies are widely adopted in the living world to manipulate light, offering great inspiration for humans to address the challenges in creating advanced photonic materials with desired performance. Among the vast photonic structures in nature, chiral photonic crystals have drawn special attention owing to their intricate 3D structure, unique chiroptical properties, and potential applications in chiral optics, pigments, information storage, and so on. In this review, we focus on the research progress in clarifying the hierarchical structures and unique optical properties of chiral photonic crystal structures found in animals and plants, including cholesteric-like one-dimensional photonic crystals and chiral gyroid structures. We summarize various top-down and bottom-up methods to mimic the biological strategy to fabricate chiral photonic crystals with comparable or better performances than their bio-counterparts. The emerging applications in sustainable photonic pigments, polarized luminescence and lasers, information storage, chiroptical devices, sensors, and radiative cooling are highlighted. We hope this review will be helpful in the design and fabrication of multifunctional chiral photonic materials inspired by nature.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"979 - 997"},"PeriodicalIF":6.8,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lixiao Han (, ), Shuxuan Liao (, ), Shihao Zhang (, ), Kean Chen (, ), Xumiao Chen (, ), Mengyi Li (, ), Qiang Li (, ), Xinping Ai (, ), Yuliang Cao (, ), Yongjin Fang (, )
{"title":"Unlocking electrochemical potential: amorphous NaFePO4 as a high-capacity and cycle-stable cathode material for advanced sodium-ion batteries","authors":"Lixiao Han \u0000 (, ), Shuxuan Liao \u0000 (, ), Shihao Zhang \u0000 (, ), Kean Chen \u0000 (, ), Xumiao Chen \u0000 (, ), Mengyi Li \u0000 (, ), Qiang Li \u0000 (, ), Xinping Ai \u0000 (, ), Yuliang Cao \u0000 (, ), Yongjin Fang \u0000 (, )","doi":"10.1007/s40843-024-3260-1","DOIUrl":"10.1007/s40843-024-3260-1","url":null,"abstract":"<div><p>Traditional cathode materials are well-defined high crystalline structures, but the repeated ion insertion/extraction with high lattice stress and volume change during the charge/discharge will cause structural degradation and diminish electrochemical performance. Herein we identify an amorphous iron phosphate electrode, NaFePO<sub>4</sub>, which can be rechargeable and show excellent electrochemical properties. The amorphous NaFePO<sub>4</sub> electrode delivers a reversible capacity of 160.5 mAh g<sup>−1</sup> at 20 mA g<sup>−1</sup>, accompanied by remarkable rate capability and cycling stability. Unlike conventional crystalline materials, the excellent electrochemical performance of the amorphous NaFePO<sub>4</sub> electrode stems from the absence of lattice limitation in the amorphous structure, which allows for the accommodation of local stress and volume change during the long-term sodiation/desodiation processes. Further experimental characterizations and theoretical simulation reveal the underlying redox characteristics. This research offers some insights for the development of innovative amorphous electrode materials with low cost and attractive electrochemical properties for wide energy storage applications.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 4","pages":"1109 - 1116"},"PeriodicalIF":6.8,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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