Rare Metals最新文献

{"title":"Coaxial nano-multilayered C/SnO2/TiO2 composites as anode materials for lithium-ion batteries","authors":"Jiao Li,&nbsp;Haoran Liang,&nbsp;Shichao Li,&nbsp;Jie Sun,&nbsp;Yifan Zhang,&nbsp;Shuxing Mei,&nbsp;Shasha Wang,&nbsp;Yong Zheng","doi":"10.1007/s12598-025-03437-1","DOIUrl":"10.1007/s12598-025-03437-1","url":null,"abstract":"<div><p>Tin dioxide (SnO₂) with a high theoretical specific capacity of 1494 mAh g^–1 is a promising candidate anode material for lithium storage. However, the shortcomings of serious volume expansion and low conductivity limit its wide application. Herein, coaxial nano-multilayered C/SnO₂/TiO₂ composites were fabricated via layer-by-layer self-assembly of TiO₂ and SnO₂-gel layers on the natural cellulose filter paper, followed by thermal treatment under a nitrogen atmosphere. Through engineering design of the assembly process, the optimal C/SnO₂/TiO₂ composite features five alternating SnO₂ and TiO₂ nanolayers, with TiO₂ as the outside shell (denoted as C/TSTST). This unique structure endows the C/TSTST with excellent structural stability and electrochemical kinetics, making it a high-performance anode for lithium-ion batteries (LIBs). The C/TSTST composite delivers a high reversible capacity of 676 mAh g⁻¹ at 0.1 A g⁻¹ after 200 cycles and retains a capacity of 504 mAh g⁻¹ at 1.0 A g⁻¹, which can be recovered to 781 mAh g⁻¹ at 0.1 A g⁻¹. The significantly enhanced electrochemical performance is attributed to the hierarchical hybrid structure, where the carbon core combined with coaxial TiO₂ nanolayers serves as a structural scaffold, ameliorating volume change of SnO₂ while creating abundant interfacial defects for enhanced lithium storage and rapid charge transport. These findings are further demonstrated by the density functional theory (DFT) calculations. This work provides an efficient strategy for designing coaxial nano-multilayered transition metal oxide-related electrode materials, offering new insights into high-performance LIBs anodes.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 10","pages":"7118 - 7135"},"PeriodicalIF":11.0,"publicationDate":"2025-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Atomic-level confinement of PtCu nanoclusters within MFI-type zeolite enables unprecedented kinetics in alkyne semi-hydrogenation","authors":"Chang-Xu Wang,&nbsp;Shuai Wang,&nbsp;Liang-Hao Song,&nbsp;Bin Wang,&nbsp;Guo-Zhu Chen,&nbsp;Dao-Wei Gao,&nbsp;Geng-Xiu Zheng,&nbsp;Yi-Pin Lv","doi":"10.1007/s12598-025-03476-8","DOIUrl":"10.1007/s12598-025-03476-8","url":null,"abstract":"<div><p>The selective semi-hydrogenation of phenylacetylene (PA) to styrene (ST) represents a critical industrial reaction, essential for producing polymer-grade styrene. Yet, achieving high selectivity at high conversions remains fundamentally challenging due to competing over-hydrogenation. Here we report an atomic-scale approach for encapsulating ultrafine PtCu (Platinum, Copper) bimetallic nanoclusters (NCs) within the microporous TS-1 zeolite matrix through a ligand-assisted hydrothermal strategy. Remarkably, the as-synthesized PtCu@TS-1 catalyst exhibited an unprecedented turnover frequency (TOF) of 2006.7 h⁻¹ and a superior styrene yield of 87.7%, significantly surpassing conventional Pt-based catalysts. Advanced characterization and in situ spectroscopy revealed that electron-rich Pt sites, induced by electron transfer from Cu in confined PtCu ensembles, substantially lower the activation barrier for hydrogen dissociation, accelerating selective hydrogenation. Moreover, the atomic confinement effect within the zeolite structure effectively modulates intermediate adsorption and accelerates product desorption, thus overcoming the selectivity-activity trade-off. This study introduces a generalizable atomic-level catalyst design principle, highlighting the immense potential of quantum-sized bimetallic clusters within porous materials for precisely tuning reaction selectivity and activity.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 10","pages":"7513 - 7526"},"PeriodicalIF":11.0,"publicationDate":"2025-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comprehensive review on rare earth elements: resources, technologies, applications, and prospects","authors":"Tian-Yu Zhao,&nbsp;Wei-Lun Li,&nbsp;Sadan Kelebek,&nbsp;Yeonuk Choi,&nbsp;Cheng-Qian Wu,&nbsp;Wen-Juan Zhang,&nbsp;Chen-Yang Wang,&nbsp;Zhong-Wei Zhao,&nbsp;Farzaneh Sadri","doi":"10.1007/s12598-025-03459-9","DOIUrl":"10.1007/s12598-025-03459-9","url":null,"abstract":"<div><p>Rare earth elements (REEs), with their unique magnetic, optical, and electrical properties, have become indispensable strategic resources. Widely applied in critical fields such as aviation, telecommunications, electronics, energy, transportation, and medicine, REEs play a vital role in advancing technology and driving social and economic development. However, the REE industry faces numerous challenges, including unbalanced resource distribution, supply and demand imbalances, international competition, technological limitations, and associated environmental pollution. This paper, incorporating both the historical evolution and current state of the REE industry, provides a comprehensive examination of the chemistry, applications, resources, technologies, challenges, and prospects of REEs. Specifically, it analyzes China’s REE industry, which holds the largest global reserves and production capacity. As a key feature, this paper introduces the Tai Chi model for sustainable development in the REE industry, offering an in-depth analysis of two primary approaches—mining and recycling; the four critical participants—governments, enterprises, researchers, and consumers; and the eight essential influencing factors—resources, energy, environment, policy, applications, technology, supply and demand, and economy. The Tai Chi model not only clarifies the responsibilities and significance of each individual but also highlights their interconnectedness, providing a compelling framework for envisioning the sustainable development of the REE industry. Moreover, the paper identifies the major challenges currently facing the industry and offers insights into the future development of REEs. As such, this work contributes to a deeper understanding of the multifaceted REE landscape and underscores the importance of sustainable practices to ensure REEs’ lasting positive impact on the global industry.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 10","pages":"7011 - 7040"},"PeriodicalIF":11.0,"publicationDate":"2025-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction of NiS/carbon fibers confined NiS composite: high catalytic activity for enhancing the hydrogen storage performances of MgH2","authors":"Ping Wu,&nbsp;Li-Rong Xiao,&nbsp;Cheng-Yu Ge,&nbsp;Cui Ni,&nbsp;Guo-Rong Wang,&nbsp;Chuan-Xin Hou,&nbsp;Hu Liu,&nbsp;Zhen-Hui Ma,&nbsp;Xin Liu,&nbsp;Wei Du,&nbsp;Xiu-Bo Xie","doi":"10.1007/s12598-025-03517-2","DOIUrl":"10.1007/s12598-025-03517-2","url":null,"abstract":"<div><p>To effectively enhance the catalytic activity of NiS, NiS particles confined into carbon fibers were prepared by electrostatic spinning followed pyrolyzation and NiS particles decorating was performed by further hydrothermal loading. The decorated NiS exhibits particle (NiS@PAN-NiS) and needle-like (NiS@PAN-NiS*) morphologies. After adding the catalysts into MgH₂, the synthesized MgH₂-5 wt% NiS@PAN-NiS composite can absorb 2.6 wt% hydrogen at 353 K and release 5.0 wt% hydrogen within 1 h at 573 K. The initial hydrogen desorption temperature was reduced to 539 K. The activation energies for hydrogen absorption/desorption were greatly reduced to 66.76 and 89.95 kJ mol⁻¹, respectively. The method of confining by electrospinning and particle decoration by hydrothermal loading reduce NiS particle agglomeration. The Mg₂Ni/Mg₂NiH₄ hydrogen pump formed by reaction between NiS and MgH₂ effectively enhanced hydrogen absorption and desorption kinetics. The formed MgS also improved the catalytic activity on the transformation of Mg and MgH₂. Moreover, the carbon fibers should influence the contact between in situ formed MgS and Mg₂Ni, providing more catalytic sites and hydrogen diffusion pathways. The construction of NiS/carbon fibers confined NiS composite by carbon fibers derived from pyrolyzation as medium provides considerable way for designing NiS-based catalysts to enhance the hydrogen storage performances of MgH₂.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 10","pages":"7332 - 7348"},"PeriodicalIF":11.0,"publicationDate":"2025-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thin and low-cost separator enables dendrite growth suppression in zinc anodes for ultra-stable aqueous zinc-ion batteries","authors":"Fu-Hai Wu,&nbsp;Xi-Yan Wei,&nbsp;Hui-Cun Gu,&nbsp;Jin-Peng Guan,&nbsp;Yong-Biao Mu,&nbsp;Rui-Xi Liao,&nbsp;Ying Chen,&nbsp;Xiu-Ting Wu,&nbsp;Mei-Sheng Han,&nbsp;Lin Zeng","doi":"10.1007/s12598-025-03430-8","DOIUrl":"10.1007/s12598-025-03430-8","url":null,"abstract":"<div><p>Aqueous zinc-ion batteries (AZIBs) have garnered significant attention owing to their intrinsic safety and the abundance of zinc resources. Traditional separators, such as glass fiber (GF), face challenges such as zinc dendrite penetration, inadequate mechanical strength, and excessive thickness, which results in increased internal resistance and diminished battery performance. In this study, we investigate the use of a mixed cellulose ester (MCE) filter membrane as a separator for AZIBs. The 110-μm-thick MCE separator exhibits a mechanical strength of 4.88 MPa, which is 12 times greater than that of the 325-μm-thick GF separator, and effectively resists zinc dendrite formation, even with a thinner design. Zn symmetric batteries utilizing the MCE separator exhibit a cycle time of 2700 h at 1 mA cm⁻². The MCE separator, incorporating hydroxyl and nitrogen functional groups, promotes uniform zinc deposition and mitigates the formation of by-products on the zinc anode, thereby enhancing corrosion resistance. Zn||MnO₂ full batteries with the MCE separator demonstrate a specific capacity of 161 mAh g⁻¹ at 1 A g⁻¹, with a capacity retention of 80.1% after 500 cycles. Furthermore, Zn||VO₂ full cells employing the MCE separator exhibit excellent rate performance and cycling stability. At 0.25 A g⁻¹, the Zn||VO₂ cell retains 86.9% of its capacity after 800 cycles, demonstrating a high capacity of 243 mAh g⁻¹. This study offers novel insights into enhancing the performance of AZIBs through the selection of a low-cost, high-strength, and thin separator design.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 10","pages":"7173 - 7184"},"PeriodicalIF":11.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent developments in low-expansion alloys for high-performance applications","authors":"Zelin Zhang,&nbsp;Chunlei Shang,&nbsp;Hong-Hui Wu,&nbsp;Chaolei Zhang,&nbsp;Faguo Hou,&nbsp;Haoliang Wang,&nbsp;Shuize Wang,&nbsp;Junheng Gao,&nbsp;Haitao Zhao,&nbsp;Xinping Mao","doi":"10.1007/s12598-025-03490-w","DOIUrl":"10.1007/s12598-025-03490-w","url":null,"abstract":"<div><p>The growing demand for low-expansion alloys in high-tech industries such as aerospace, electronics, communications, and healthcare underscores the necessity of enhancing their performance under extreme operating conditions. This review explores the influence of alloy composition and processing techniques on the key properties of low-expansion alloys, including strength, operating temperature range, magnetic properties, corrosion resistance, and thermal conductivity. The role of microalloying and the optimization of processing parameters in improving these properties are discussed, with an emphasis on the underlying mechanisms and the intricate relationships between composition, processing, and properties. Future breakthroughs in studying low-expansion alloys are anticipated through the use of multi-functional databases, high-throughput experiments or calculations, and machine learning for multi-objective optimization. This work provides insightful perspectives and practical guidance for advancing low-expansion alloys in both academic research and industrial applications.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 10","pages":"7088 - 7105"},"PeriodicalIF":11.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Coordination-etching fabrication of ZIF-67-derived nickel–cobalt layered double hydroxides for aqueous Ni-Zn batteries","authors":"Ling-Ling Chen,&nbsp;Dian-Heng Yu,&nbsp;Yi-Hao Chen,&nbsp;Hsiao-Chien Chen,&nbsp;Mohsen Shakouri,&nbsp;Yi-Chun Su,&nbsp;Huan Pang","doi":"10.1007/s12598-025-03545-y","DOIUrl":"10.1007/s12598-025-03545-y","url":null,"abstract":"<div><p>Aqueous zinc-based batteries (ZBBs) are promising for grid-scale energy storage owing to their safety and cost-effectiveness; however, their practical application is hindered by rapid capacity fading and unstable cathodes caused by sluggish Zn²⁺ kinetics and structural degradation in alkaline electrolytes. Herein, to address these challenges, we utilize amphiphilic polymer (PVP) to realize the composite of nickel-based complexes and ZIF-67. The hierarchical nickel–cobalt layered double hydroxide (NiCo-LDH) was prepared by metal ion exchange strategy. PVP-mediated-mediated suppression of agglomeration, combined with Ni²⁺-induced framework reconstruction, synergistically modulated the morphology, resulting in mesoporous nanosheets with hydroxyl-rich surfaces. This design generated high-valence Co³⁺ species through charge-compensation-driven oxidation, thereby significantly accelerating Zn²⁺ ion diffusion and reducing the interfacial resistance. The optimized NiCo-LDH-100 cathode (Ni:Co = 3:1) achieves cycling stability and exceptional energy/power densities (0.49 mWh cm^–2/49.1 mW cm^–2). This study provides a solution for the cathode instability of Ni-Zn batteries through a coordination-derivatization strategy, which is promising for advancing sustainable energy storage technologies.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 10","pages":"7185 - 7194"},"PeriodicalIF":11.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A potent antibacterial and antitumor Zn–4Ag–2Se alloy for biodegradable orthopedic applications","authors":"Miao Zhang,&nbsp;Fei Li,&nbsp;Yi-Long Dai,&nbsp;Jian-Guo Lin,&nbsp;Xiao-Kai Zhang,&nbsp;De-Chuang Zhang,&nbsp;Yuncang Li,&nbsp;Cuie Wen","doi":"10.1007/s12598-025-03417-5","DOIUrl":"10.1007/s12598-025-03417-5","url":null,"abstract":"<div><p>Zinc (Zn) alloys exhibit substantial potential for application in the domain of metal materials that are both biodegradable and implantable because of their appropriate degradation rate and biocompatibility. Selenium (Se) has been widely employed in tumor treatment, positioning Zn-Se alloys as promising candidates for the development of the next generation of antitumor degradable materials. However, the considerable disparity in melting points and the volatility of elemental Zn and Se pose significant challenges for alloying using conventional melting methods. Here, we report a Zn–4Ag–2Se alloy using silver selenide (Ag₂Se) as the Se source for biodegradable implant materials. The alloy’s antibacterial and antitumor capabilities, along with its mechanical, corrosion, and biocompatibility properties, were assessed and then compared to the properties of a Zn-4Ag alloy. Both alloys consisted primarily of η-Zn and ε-AgZn₃ phases, with the Zn–4Ag–2Se alloy additionally containing a minor amount of a ZnSe phase. The hot-rolled (HR) Zn–4Ag–2Se alloy exhibited an ultimate tensile strength of 211.5 ± 2.3 MPa and elongation of 24.9% ± 0.6%. Additionally, the HR Zn–4Ag–2Se alloy demonstrated an electrochemical corrosion rate of 105.51 ± 1.21 μm year⁻¹ and degradation rate of 59.8 ± 0.2 μm year⁻¹ in Hanks’ solution, meeting the performance criteria for degradable implant materials. The HR Zn–4Ag–2Se alloy also exhibited excellent antibacterial activity, evidenced by an inhibition zone diameter (IZD) of 2.22 ± 0.01 mm and colony-forming unit count of 58 ± 2. The HR Zn–4Ag–2Se alloy did not inhibit the proliferation of MC3T3-E1 cells but promoted reactive oxygen species production and finally cell death toward MG63 osteosarcoma cells.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 10","pages":"7615 - 7633"},"PeriodicalIF":11.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modulation of d–d orbital interactions in Ti–Ni–N4 coordination introduces dynamic bonding for enhanced CO2 photoreduction","authors":"Song-Song Zhi,&nbsp;Xiao-Xiao Zou,&nbsp;Jin-Ye Lei,&nbsp;Lu Zhang,&nbsp;Zi-Han Li,&nbsp;Wan-Nuo Gu,&nbsp;Fahim Ullah,&nbsp;Hong Guo,&nbsp;Da-Peng Wu","doi":"10.1007/s12598-025-03487-5","DOIUrl":"10.1007/s12598-025-03487-5","url":null,"abstract":"<div><p>Photocatalytic CO₂ reduction using atomically dispersed catalysts holds significant potential for addressing global energy and environmental challenges. However, the influence of d–d orbital interactions between metal centers and coordinated atoms remains underexplored. Herein, nickel phthalocyanine is anchored to the metal-exposed crystal face of TiO₂, forming Ti–Ni–N₄ coordination. This configuration reveals that the axially coordinated Ti atoms serve as a novel electron channel with electron-donating ability, transferring electrons to the Ni center through d–d coupling. It is found that the dynamic adjustment of bond lengths and d-band centers in Ti–Ni bonding during CO₂ photoreduction process can effectively modulate the adsorption strengths of the Ni center for different intermediates. This leads to a significant enhancement in the photocatalytic performance for CO₂ reduction to CO without a sacrificial reagent, achieving an exceptional CO evolution rate of 378.5 μmol g⁻¹. Furthermore, the d–d coupling mediated by Ti–Ni–N₄ coordination increases the vacancy formation energy of active sites, preventing the leaching of Ni active centers. This study provides a strategy for the precise design of d–d orbital regulation and resistance to demetallization in photocatalysts for efficient CO₂ conversion.</p><h3>Graphic abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 10","pages":"7464 - 7475"},"PeriodicalIF":11.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Grafting strategy achieving self-healing polymer/sulfide electrolyte for high-performance solid-state lithium–silicon batteries","authors":"Xiaoyan Wang,&nbsp;Shenggong He,&nbsp;Zheng Hu,&nbsp;Hao Xu,&nbsp;Likun Pan,&nbsp;Jinliang Li","doi":"10.1007/s12598-025-03412-w","DOIUrl":"10.1007/s12598-025-03412-w","url":null,"abstract":"<div><p>Severe structural fractures and persistent side reactions at the interface with liquid electrolytes have hindered the commercialization of silicon (Si) anodes. Solid-state electrolytes present a promising solution to address these issues. However, the high interfacial resistance of rigid ceramic electrolytes and the limited ionic conductivity of polymer electrolytes remain significant challenges, further complicated by the substantial volume expansion of Si. In this work, we chemically grafted a flame-retardant, self-healing polyurethane-thiourea polymer onto Li₇P₃S₁₁ (SHPUSB-40%LPS) via nucleophilic addition, creating an electrolyte with exceptional ionic conductivity, high elasticity, and strong compatibility with Si anodes. We observed that FSI⁻ was strongly adsorbed onto the LPS surface through electrostatic interactions with sulfur vacancies, enhancing Li⁺ transport. Furthermore, SHPUSB-40%LPS exhibits dynamic covalent disulfide bonds and hydrogen bonds, enabling self-assembly of the electrolyte at the interface. This dynamic bonding provides a self-healing mechanism that mitigates structural changes during Si expansion and contraction cycles. As a result, the Si anode with SHPUSB-40%LPS presents excellent cycling stability, retaining nearly 53.5% of its capacity after 300 cycles. The practical applicability of this design was validated in a 2 Ah all-solid-state Si||LiNi_0.6Mn_0.2Co_0.2O₂ pouch cell, which maintained a stable Li-ion storage capacity retention of 76.3% after 350 cycles at 0.5C. This novel solid-state electrolyte with self-healing properties offers a promising strategy to address fundamental interfacial and performance challenges associated with Si anodes.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 10","pages":"7159 - 7172"},"PeriodicalIF":11.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}