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Polybenzimidazole Composite Separators Engineered from MOFs-HNTs Composites Applicated in Lithium-Ion Batteries

IF 13.3 2区材料科学

Small Pub Date : 2025-04-01 DOI: 10.1002/smll.202502051

Qian Zhou, Shabab Hussain, Jisong Hu, Guanghao Zhang, Wenxing Zhang, Bin Zhang, Lei Wang

{"title":"Polybenzimidazole Composite Separators Engineered from MOFs-HNTs Composites Applicated in Lithium-Ion Batteries","authors":"Qian Zhou, Shabab Hussain, Jisong Hu, Guanghao Zhang, Wenxing Zhang, Bin Zhang, Lei Wang","doi":"10.1002/smll.202502051","DOIUrl":"https://doi.org/10.1002/smll.202502051","url":null,"abstract":"Incorporating inorganic nanostructured materials into polymeric separators for lithium-ion batteries (LIBs) enhances properties such as ionic conductivity, electrolyte wettability, and thermal resistance. However, poor interfacial compatibility between inorganic materials and the polymeric matrix remains a significant challenge. In this study, Zr-based UiO-66 metal-organic frameworks (MOFs) is employed as an interfacial binder between halloysite nanotubes (HNTs) and a poly-(arylene ether benzimidazole) (OPBI) matrix, preparing porous separators using the non-solvent phase separation (NIPS) method. The UiO-66 MOFs promote strong adhesion of HNTs to the OPBI chains, creating a more cohesive inorganic-organic system, as confirmed by molecular dynamics (MD) simulations of binding energy. The resulting OPBI@M-H10 composite separator exhibits high porosity (80%), an electrolyte absorption capacity of 377%, and an ionic conductivity of 1.59 mS·cm⁻¹. Furthermore, LiFePO4 half-cells assembled with this composite separator show a discharge capacity of 161 mAh·g⁻¹ and a retention rate of 97.96% after 200 charge-discharge cycles. The separator also demonstrates excellent electrode stability in the plating/stripping test of Li symmetric cells, lasting up to 1600 hours and effectively inhibiting dendrite growth on the Li anode. This approach provides a promising solution for high-performance LIBs separators and paves the way for advancements in LIBs technology and energy storage applications.","PeriodicalId":228,"journal":{"name":"Small","volume":"134 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745473","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}

引用次数: 0

Injectable Hydrogel Loaded with Plasma-Rich Platelets Repairing Endometrial Injury and Remodeling Reproductive Function by Regulating PI3K/AKT Pathway

IF 13.3 2区材料科学

Small Pub Date : 2025-04-01 DOI: 10.1002/smll.202412177

Qing Zhang, Di Qin, Chengyang Liu, Zeqiang Chen, Xuelin Gong, Shuang Wang, Ruipeng Gao, Sun Yu, Jiaojiao Qi, Yusheng Niu, Shichao Xing, Shichao Bi, Bo Tang

{"title":"Injectable Hydrogel Loaded with Plasma-Rich Platelets Repairing Endometrial Injury and Remodeling Reproductive Function by Regulating PI3K/AKT Pathway","authors":"Qing Zhang, Di Qin, Chengyang Liu, Zeqiang Chen, Xuelin Gong, Shuang Wang, Ruipeng Gao, Sun Yu, Jiaojiao Qi, Yusheng Niu, Shichao Xing, Shichao Bi, Bo Tang","doi":"10.1002/smll.202412177","DOIUrl":"https://doi.org/10.1002/smll.202412177","url":null,"abstract":"Infertility resulting from uterine damage has emerged as a significant challenge confronting the development of modern society. Existing therapeutic approaches frequently encounter limitations due to the intricate physical and physiological environment of uterus. Platelet-rich plasma (PRP), a concentrate of platelets enriched with various growth factors, has been used in uterine injury repair. However, the rapid release of activating factors from PRP limits its timeliness in therapeutic applications. This work involves the synthesis of a biodegradable hydrogel based on natural polysaccharides through dynamic Schiff base. The hydrogel demonstrates tissue adhesion, self-healing, and injectability. Furthermore, its internal porous architecture facilitates the loading and sustained release of PRP. In vitro experiments, the hydrogel loaded with RPR (HOHP) exhibits a significant enhancement in cell proliferation and migration and promotes vascular regeneration by upregulating the expression of VEGFA and further activating the intracellular phosphatidylinositol kinase (PI3K)/protein kinase B (AKT) pathway. In vivo experiments on uterine endometrial injury model, HOHP restores endometrial thickness and gland number, reduces collagen deposition, promotes angiogenesis to repair uterine damage and restore fertility, which provides reinforced endorsement for the clinical management of uterine injury and enhances fertility.","PeriodicalId":228,"journal":{"name":"Small","volume":"1 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745679","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}

引用次数: 0

High Thermoelectric Figure of Merit (zT) in β-Ag2Se via Aliovalent Doping

IF 13.3 2区材料科学

Small Pub Date : 2025-04-01 DOI: 10.1002/smll.202411498

Aradhana Acharya, Suneetha Nagaraja, Nahid Hassan, Kartick Tarafder, Nirmalya Ballav

{"title":"High Thermoelectric Figure of Merit (zT) in β-Ag2Se via Aliovalent Doping","authors":"Aradhana Acharya, Suneetha Nagaraja, Nahid Hassan, Kartick Tarafder, Nirmalya Ballav","doi":"10.1002/smll.202411498","DOIUrl":"https://doi.org/10.1002/smll.202411498","url":null,"abstract":"High-performance thermoelectric materials are essential for efficient low-temperature (300–400 K) heat energy harvesting, with n-type Ag2Se being a promising candidate. To further enhance the thermoelectric figure of merit (zT) of Ag2Se, aliovalent doping has emerged as a key strategy. However, achieving wet-chemical aliovalent doping of Ag2Se at ambient temperature has proven challenging. In this work, a high zTmax of 1.57 at 398 K is reported for an optimally Cd(II)-doped Ag2Se sample, specifically in the structurally phase-pure Ag1.98Cd0.02Se, which is successfully synthesized via an aqueous-based method at room-temperature (300 K). The Ag1.98Cd0.02Se sample also exhibits an impressive average zTavg of 1.12 over the temperature range of 315–400 K. Density functional theory (DFT) calculations for both the pristine and doped samples reveal significant changes in the electronic band structures, including notable modulations in the density of states near the Fermi energy, particularly for the Ag-3d states. The remarkable thermoelectric performance of Ag1.98Cd0.02Se is attributed to an optimization of charge carrier induced by the Cd(II)-doping.","PeriodicalId":228,"journal":{"name":"Small","volume":"32 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745668","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}

引用次数: 0

Ultra-Densified TiO₂(B) Anode With Fluid-Like Compressibility: Enhancing Volumetric Capacity for High-Performance Supercapacitors

IF 13.3 2区材料科学

Small Pub Date : 2025-04-01 DOI: 10.1002/smll.202410793

Shintaro Aoyagi, Etsuro Iwama, Keisuke Matsumura, Kazuaki Kisu, Keita Okazaki, Yoshihiko Egawa, McMahon Thomas Homer Reid, Wako Naoi, Patrick Rozier, Patrice Simon, Katsuhiko Naoi

{"title":"Ultra-Densified TiO₂(B) Anode With Fluid-Like Compressibility: Enhancing Volumetric Capacity for High-Performance Supercapacitors","authors":"Shintaro Aoyagi, Etsuro Iwama, Keisuke Matsumura, Kazuaki Kisu, Keita Okazaki, Yoshihiko Egawa, McMahon Thomas Homer Reid, Wako Naoi, Patrick Rozier, Patrice Simon, Katsuhiko Naoi","doi":"10.1002/smll.202410793","DOIUrl":"https://doi.org/10.1002/smll.202410793","url":null,"abstract":"This study develops a highly densified bronze-type TiO₂ (TiO2(B)) anode to enhance the volumetric energy and power density of supercapacitors. By integrating ultracentrifugation with strategic carbon reduction via annealing, a TiO₂(B) anode with fluid-like lubrication, high compressibility, and improved electrode density is synthesized. The annealing process facilitated a hierarchical nanoporous TiO₂(B) network while preventing agglomeration, achieving an electrode density of 2.24 g cm⁻3, surpassing conventional values. The densified electrode exhibited an exceptional volumetric capacity of 400 mAh cm⁻3, maintaining high-rate performance at 120C. This approach effectively links mechanical and physicochemical properties to electrochemical performance, offering a scalable strategy for optimizing TiO₂(B) anodes. The findings highlight the potential of highly densified TiO₂(B) for hybrid supercapacitors, particularly in applications requiring maximum energy and power density within compact volumes. These advancements hold promise for electric mobility, portable electronics, and renewable energy storage, where efficiency and performance are critical. By demonstrating a method for achieving high-density energy storage, this study provides a framework for next-generation supercapacitor materials. Addressing the growing demands of modern technologies, this research advances high-performance, space-efficient energy storage solutions crucial for future energy applications","PeriodicalId":228,"journal":{"name":"Small","volume":"183 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745676","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}

引用次数: 0

Concentration Dependent Modulation in Optoelectronic Traits of Self-Collated CsPbBr3 Perovskites

IF 13.3 2区材料科学

Small Pub Date : 2025-04-01 DOI: 10.1002/smll.202412614

Leepsa Mishra, Aradhana Panigrahi, Priyanka Dubey, Soumi Dutta, Himanshu Kumar, Manas Kumar Sarangi

{"title":"Concentration Dependent Modulation in Optoelectronic Traits of Self-Collated CsPbBr3 Perovskites","authors":"Leepsa Mishra, Aradhana Panigrahi, Priyanka Dubey, Soumi Dutta, Himanshu Kumar, Manas Kumar Sarangi","doi":"10.1002/smll.202412614","DOIUrl":"https://doi.org/10.1002/smll.202412614","url":null,"abstract":"Self-collation of perovskite nanocrystals into superstructures of larger length scales has been growing in research interest due to their dramatically enhanced performance in various nano-devices, modulating their optical and electrical traits. Herein, the unique concentration-dependent self-assembly of phenethylamine (PEA)-capped CsPbBr3 (PCPB) perovskites spanning a size range of nano to micron level without structural phase alteration is infered. By optimizing various synthetic parameters like PEA amount, and solvents, the self-coalescence in PCPB crystal growth is controlled. Furthermore, the highest-concentrated PCPB (C5) has improved the charge transfer (CT) efficiency to 1,4-Napthoquinone (NPQ), corroborated with stronger binding between C5 and NPQ, compared to the lowest-concentrated PCPB (C1). Incorporating NPQ into such concentration-dependent PCPB enhances their local conductance unveiling the CT-induced current rise, while the detrimental insulating property of PEA molecules reduces the conductance in C5 compared to C1. These outcomes offer a foundation for tailoring the properties of self-assembled perovskites for optoelectronic devices and energy conversion technologies.","PeriodicalId":228,"journal":{"name":"Small","volume":"74 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745764","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}

引用次数: 0

Tuning the Catalytic Activity of MoS2−x−NbSx Heterostructure Nanosheets for Bifunctional Acidic Water Splitting

IF 13.3 2区材料科学

Small Pub Date : 2025-04-01 DOI: 10.1002/smll.202501464

Mizna Naseem, Muhammad Tahir, Jun Dai, Longbing Qu, Fazal Ul Nisa, Waheed Ahmad, Iqra Shahbaz, Zeyu Ma, Arif Ullah Khan, Liang He

{"title":"Tuning the Catalytic Activity of MoS2−x−NbSx Heterostructure Nanosheets for Bifunctional Acidic Water Splitting","authors":"Mizna Naseem, Muhammad Tahir, Jun Dai, Longbing Qu, Fazal Ul Nisa, Waheed Ahmad, Iqra Shahbaz, Zeyu Ma, Arif Ullah Khan, Liang He","doi":"10.1002/smll.202501464","DOIUrl":"https://doi.org/10.1002/smll.202501464","url":null,"abstract":"Developing durable electrocatalysts with high activity for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in acidic media is critically important for clean power production. In this study, MoS2−x−NbSx heterostructure nanosheets are synthesized from a solid-state reaction method followed by liquid phase exfoliation, and their catalytic performance is optimized. The MoS2−x−NbSx heterostructure nanosheets with optimal precursors ratio exhibit promising attributes for applications in the HER and OER compared to pristine MoS2 and Nb under the same conditions. The MoS2−x−NbSx heterostructure nanosheets catalyst on glassy carbon electrodes shows the minimum overpotential of 159 mV for HER and 295 mV for OER at a current density of 10 mA cm−2 in 0.5 m H2SO4. This research offers valuable insights into the fabrication of heterostructure nanosheets and evaluates their potential as effective electrocatalysts for water splitting compared with pristine 2D materials in an acid environment.","PeriodicalId":228,"journal":{"name":"Small","volume":"2 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745464","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}

引用次数: 0

Integrated Network Cathodes by In Situ Phase Transition Break Diffusion Limitation for Zinc Ion Battery

IF 13.3 2区材料科学

Small Pub Date : 2025-04-01 DOI: 10.1002/smll.202411860

Tianning Pian, Nengze Wang, Xiaohe Ren, Shengbo Yang, Mengxuan Sun, Ziwei Gan, Jianing Lv, Chunyang Jia

{"title":"Integrated Network Cathodes by In Situ Phase Transition Break Diffusion Limitation for Zinc Ion Battery","authors":"Tianning Pian, Nengze Wang, Xiaohe Ren, Shengbo Yang, Mengxuan Sun, Ziwei Gan, Jianing Lv, Chunyang Jia","doi":"10.1002/smll.202411860","DOIUrl":"https://doi.org/10.1002/smll.202411860","url":null,"abstract":"The cathode materials set the limitation of aqueous zinc ion batteries (AZIBs) in capacity and restrict their development. Vanadium-based materials show unsatisfactory conductivity and strong interactions with Zn2+ as well as a narrow voltage window. Herein, an integrated network structure is obtained by modulating the voltage window to phase transition from VO2 to HXV2O5. This has multiple advantages: low crystallinity and abundant active sites; good electrolyte wetting; and two-electron transfer for high specific capacity. The AZIBs exhibit impressive rate performance (545 mAh g−1 at 0.1 A g−1 and 185 mAh g−1 at 20 A g−1) and cycling performance (179 mAh g−1 after 15 000 cycles at 20 A g−1), stable operation even at −20 °C (391 mAh g−1 at 1 A g−1, 97 mAh g−1 at 10 A g−1). AZIBs have high power density and high energy density based on the mass of cathode material (405 Wh kg−1 at 74 W kg−1 and 102 Wh kg−1 at 11 127 W kg−1). The pouch-type cell can run for over 500 h, has a maximum energy density of 45.5 Wh kg−1. The phase transition mechanism and energy storage mechanism are identified, which is conducive to promoting the development of cathodes for AZIBs.","PeriodicalId":228,"journal":{"name":"Small","volume":"1 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745470","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}

引用次数: 0

The Influence of Flexibility of Alkynyl Ligands on the Formation of an Fcc Au110 Nanocluster

IF 13.3 2区材料科学

Small Pub Date : 2025-04-01 DOI: 10.1002/smll.202502106

Feng Hu, Gaoyuan Yang, Zhen-Chao Long, Wan-Qi Shi, Gui-Jie Liang, Jia-Qi Wang, Quan-Ming Wang

{"title":"The Influence of Flexibility of Alkynyl Ligands on the Formation of an Fcc Au110 Nanocluster","authors":"Feng Hu, Gaoyuan Yang, Zhen-Chao Long, Wan-Qi Shi, Gui-Jie Liang, Jia-Qi Wang, Quan-Ming Wang","doi":"10.1002/smll.202502106","DOIUrl":"https://doi.org/10.1002/smll.202502106","url":null,"abstract":"Isomerization of nanoclusters is helpful for understanding the relationships between structures and properties. Surface-protecting ligands play a crucial role in controlling the atomic packing mode of the inner core. The synthesis and total structural determination of the all alkynyl-protected gold nanocluster (NEt3CH2Cl)2[Au110(C≡CC3H6Ph)48] (Au110-1) are reported. Au110-1 and the previously reported [Au110(C≡CC6H4-4-CF3)]2− (Au110-2) constitute the largest alkynyl-protected nanocluster quasi-isomers (> 100 metal atoms). Both Au110 consist of an fcc Au86 kernel and a shell of 24 RC≡C─Au─C≡CR staples, but the specific arrangements are different. The application of the flexible alkynyl ligands creates a significant difference in the face-centered cubic (fcc) kernel structure in Au110-1, showing a different electronic structure, thermal- and photo-stability. Transient absorption spectra reveal that Au110-1 still does not show any metallic characteristics, even though it has a smaller energy gap (Eg) than Au110-2.","PeriodicalId":228,"journal":{"name":"Small","volume":"58 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745471","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}

引用次数: 0

Cost-Effective Perylene-Diimide Non-Conjugated Polymer as Cathode Interlayer for Large-Scale Production of Organic Photovoltaics

IF 13.3 2区材料科学

Small Pub Date : 2025-04-01 DOI: 10.1002/smll.202502094

Wenxi Xiao, Yanhe Xiang, Qingyang Li, Zhe Li, Bowei Xu, Shouke Yan

{"title":"Cost-Effective Perylene-Diimide Non-Conjugated Polymer as Cathode Interlayer for Large-Scale Production of Organic Photovoltaics","authors":"Wenxi Xiao, Yanhe Xiang, Qingyang Li, Zhe Li, Bowei Xu, Shouke Yan","doi":"10.1002/smll.202502094","DOIUrl":"https://doi.org/10.1002/smll.202502094","url":null,"abstract":"At present, organic solar cells (OSCs) stand at a key stage of industrialization. Although many organic photovoltaic materials exhibit outstanding performance, they cannot meet the requirements for large-scale production. Here, a cost-effective and high-throughput method is reported to prepare Perylene/naphthalene-diimide (PDI/NDI) non-conjugated polymers for serving as cathode interlayer (CIL) materials in OSCs. By utilizing low-cost raw materials, the NDI/PDI polymers can be readily synthesized without involving purification by column chromatography, which minimizes the cost of CILs. Notably, the performance of PDI-OEG CIL is insensitive to preparation conditions and processing methods, thereby lowering the technical threshold for practical applications, which is essentially important for large-scale production. By using a binary blend PM6:L8-BO as an active layer, the OSC modified by PDI-OEG exhibited a power conversion efficiency (PCE) of 18.7%. It is demonstrated that the suitable work function, self-doping effect, and H-aggregate endowed PDI-OEG with excellent electron collection capability, which can suppress the charge recombination in OSCs. Moreover, PDI-OEG is well-compatible with a large-area blade-coating technique, and a 1-cm2 OSC can be fabricated by using a blade-coated PDI-OEG, delivering a PCE of 17.0%. The results suggest that PDI-OEG is a promising CIL material for advancing the industrialization of organic photovoltaic technology.","PeriodicalId":228,"journal":{"name":"Small","volume":"37 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745472","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}

引用次数: 0

Modulation of Surface/Interface States in Bi2S3/VS4 Heterostructure With CN Layer for High-Performance Sodium-Ion Batteries: Enhanced Built-in Electric Field and Polysulfide Capture

IF 13.3 2区材料科学

Small Pub Date : 2025-04-01 DOI: 10.1002/smll.202500359

Weiwei Chen, Qinghua Sun, Jianchao Li, Ziwei Gong, Wenju Xie, Zhiyong Ouyang, Bai Zheng, Jie Zhao, Yanhe Xiao, Shuijin Lei, Baochang Cheng

{"title":"Modulation of Surface/Interface States in Bi2S3/VS4 Heterostructure With CN Layer for High-Performance Sodium-Ion Batteries: Enhanced Built-in Electric Field and Polysulfide Capture","authors":"Weiwei Chen, Qinghua Sun, Jianchao Li, Ziwei Gong, Wenju Xie, Zhiyong Ouyang, Bai Zheng, Jie Zhao, Yanhe Xiao, Shuijin Lei, Baochang Cheng","doi":"10.1002/smll.202500359","DOIUrl":"https://doi.org/10.1002/smll.202500359","url":null,"abstract":"Metal sulfides are promising materials for sodium-ion batteries (SIBs) owing to unique structures and high theoretical capacity. However, issues like poor conductivity, large volume changes, and polysulfide dissolution limit practical application. This study introduces a novel Christmas tree-like heterostructure composed of Bi2S3 and VS4 encapsulated in nitrogen-doped carbon shell (Bi2S3/VS4@CN), synthesized by sulfurizing dopamine-coated BiVO4 precursor. The in situ synthesis ensures excellent lattice matching between Bi2S3 and VS4, minimizing interface states and enhancing effective built-in electric field. This design accelerates electrochemical reaction kinetics; moreover, it promotes progressive reaction that mitigates structural fragmentation, suppresses degradation, and prevents polysulfide dissolution and shuttle. Additionally, the CN shell effectively passivates the surface states of Bi2S3 and VS4 nanostructures, lowering surface barrier and improving overall conductivity. As a result, Bi2S3/VS4@CN-based half-SIBs demonstrate remarkable long-cycle stability, maintaining 387.1 mAh g−1 after 1600 cycles at 2 A g−1, and excellent rate performance with 376.3 mAh g−1 at 5 A g−1. Full-SIBs using Na3V2(PO4)3//Bi2S3/VS4@CN exhibit outstanding cycling stability, retaining 117.2 mAh g−1 after 200 cycles at 1 A g−1, along with 218 Wh kg−1 high energy density at 145.3 W kg−1. This work highlights the potential of heterostructures in advancing metal sulfide-based SIBs for high-performance energy storage.","PeriodicalId":228,"journal":{"name":"Small","volume":"22 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745674","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}

引用次数: 0