Small Science最新文献_第5页

Coconut Oil as Lipid-Based 3D-Printable Sacrificial Material for the Facile Biofabrication of Precise Perfusable Microchannels and Freeform Hydrogel Structures. 椰子油作为脂基3d打印的牺牲材料，用于精密可渗透微通道和自由形态水凝胶结构的易于生物制造。

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Small Science Pub Date : 2026-08-19 eCollection Date: 2026-08-01 DOI: 10.1002/smsc.70371

Salma Mansi, Susanne Halbherr, Franziska Möller, Anna Lotta Ernst, Sophie Bauer, Zinaida Kuznetsova, Myrto Karagiannakidou Samsarelou, Carolin A Rickert, Dominik Heinrich, Zhaoyang Zhong, Diana M Rojas-González, Oliver Lieleg, Petra Mela

{"title":"Coconut Oil as Lipid-Based 3D-Printable Sacrificial Material for the Facile Biofabrication of Precise Perfusable Microchannels and Freeform Hydrogel Structures.","authors":"Salma Mansi, Susanne Halbherr, Franziska Möller, Anna Lotta Ernst, Sophie Bauer, Zinaida Kuznetsova, Myrto Karagiannakidou Samsarelou, Carolin A Rickert, Dominik Heinrich, Zhaoyang Zhong, Diana M Rojas-González, Oliver Lieleg, Petra Mela","doi":"10.1002/smsc.70371","DOIUrl":"https://doi.org/10.1002/smsc.70371","url":null,"abstract":"Sacrificial materials provide temporary support in the biofabrication of 3D hydrogel constructs featuring cavities and overhangs or having slow polymerization preventing printability. Currently used sacrificial hydrogel inks take up water from the surrounding matrix hindering the shape fidelity of the final construct, for example microchannels with a flattened/irregular cross-section. Furthermore, some inks require removal by chemical dissolution or mechanical forces with potential cytotoxic effects and damage of the main construct. Here, we propose lipid-based sacrificial materials to address these limitations and introduce coconut oil as proof-of-concept hydrophobic, temperature-responsive, cytocompatible, and printable sacrificial material that enables a cell-friendly removal process. We demonstrate its suitability in the fabrication of microchannels with circular cross-section and dimensional accuracy, which support functional endothelial layer formation, as demonstrated with dextran diffusion. Furthermore, we show the versatility of coconut oil by applying it as support material for the additive manufacturing of 3D macroscale hydrogel structures with overhangs and bridging elements as well as support bath for the fabrication of complex vascular structures in freeform embedded printing. The applicability with various hydrogels with different gelation mechanisms and the ease of use and the large availability at a low cost make the lipid-based ink a promising material in biofabrication.","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"6 8","pages":"e70371"},"PeriodicalIF":7.0,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13489305/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148798237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction to "Vanadium Carbide Quantum Dots Exert Efficient Anti-Inflammatory Effects in Lipopolysaccharide-Induced BV2 Microglia and Mice". 修正“碳化钒量子点对脂多糖诱导的BV2小胶质细胞和小鼠具有有效的抗炎作用”。

IF 7

Small Science Pub Date : 2026-08-19 eCollection Date: 2026-08-01 DOI: 10.1002/smsc.70372

引用次数: 0

Highly Reversible Li-Insertion/Extraction in Octahedral Voids of LiNi_0.5Mn_1.5O₄ Cathode With Restricted SnS Anode: Critical Role of Synthetic Approach. 限制SnS阳极LiNi0.5Mn1.5O4阴极八面体孔洞高可逆锂插入/萃取：合成方法的关键作用

IF 7

Small Science Pub Date : 2026-08-19 eCollection Date: 2026-08-01 DOI: 10.1002/smsc.70365

Fadiya Faisal, Akshay Manohar, Shaji Jyothilakshmi, Yun-Sung Lee, Vanchiappan Aravindan

{"title":"Highly Reversible Li-Insertion/Extraction in Octahedral Voids of LiNi0.5Mn1.5O4 Cathode With Restricted SnS Anode: Critical Role of Synthetic Approach.","authors":"Fadiya Faisal, Akshay Manohar, Shaji Jyothilakshmi, Yun-Sung Lee, Vanchiappan Aravindan","doi":"10.1002/smsc.70365","DOIUrl":"https://doi.org/10.1002/smsc.70365","url":null,"abstract":"In this work, we explore the possibility of utilizing lithium nickel manganese oxide (LiNi0.5Mn1.5O4 or LNMO) as a cathode material for developing a stable and safe Li-ion battery (LIB). The full-cell configuration is assembled by pairing LNMO with coprecipitated SnS, a high-capacity alloy-type anode material that surpasses conventional anode materials, such as graphite. While LNMO is typically operated in the high-voltage region (~4.8 V vs. Li) utilizing the Ni2+/4+ couple associated with tetrahedral insertion, such operation often leads to severe electrolyte degradation and parasitic reactions. To overcome this, we employ a lower-voltage (~2.8 V vs. Li) approach that utilizes the Mn4+/3+ redox couple corresponding to octahedral insertion, enhancing safety and stability. However, conventionally synthesized (i.e., bulk) LNMO often fails to facilitate this insertion, prompting us to adopt the electrospinning technique to produce nanostructured LNMO with improved Li-ion kinetics and ionic transport that supports octahedral insertion. Our work also demonstrates the importance of nanostructuring, which facilitates octahedral insertion and enables us to incorporate a low-voltage application without compromising safety. The electrospun (E-spun) LNMO can exhibit a higher discharge capacity and superior cycling stability in both high- and low-voltage regions; however, we will focus on low-voltage applications. This hybrid configuration, integrating a fast Li-ion diffusion spinel cathode and a high-capacity alloy anode, enables efficient ion transport and enhanced electrode compatibility. By narrowing the voltage window to 2-3 V versus Li, the system exhibits stable cycling performance, along with improved safety, which facilitates the development of next-generation LIBs with balanced performance and durability.","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"6 8","pages":"e70365"},"PeriodicalIF":7.0,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13489502/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148798821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

2D Germanane-Based Z-Scheme Heterojunctions for Ultrafast Antibiotic Degradation and Mineralization. 基于二维germanane的Z-Scheme异质结用于超快速抗生素降解和矿化。

IF 7

Small Science Pub Date : 2026-08-19 eCollection Date: 2026-08-01 DOI: 10.1002/smsc.70375

Yiming Lei, Xavier Sala, Jordi García-Antón, Jose Muñoz

{"title":"2D Germanane-Based Z-Scheme Heterojunctions for Ultrafast Antibiotic Degradation and Mineralization.","authors":"Yiming Lei, Xavier Sala, Jordi García-Antón, Jose Muñoz","doi":"10.1002/smsc.70375","DOIUrl":"https://doi.org/10.1002/smsc.70375","url":null,"abstract":"The escalating global concern over antibiotic contamination in aquatic environments demands the development of efficient photocatalytic systems capable of achieving both rapid degradation and deep mineralization. Herein, an all-solid-state Z-scheme heterojunction has been engineered through the rational wet-chemical immobilization of tetrahedral Ag3PO4 nanocrystals onto 2D germanane (2D-GeH) nanosheets, with metallic Ag nanoparticles serving as a pivotal electron mediator. Under visible light irradiation, the resulting 2D-GeH/Ag/Ag3PO4 heterojunction exhibits ultrafast tetracycline (TC) degradation (96.1% in 3 min) together with deep mineralization efficiency (70.5% total organic carbon removal). Mechanistic investigations reveal the pivotal role of superoxide radicals in the degradation process, while chromatographic analyses identify two dominant TC transformation pathways leading to mineralization. Thus, this work highlights the potential of 2D-GeH-based Z-scheme heterojunctions as effective visible-light-driven photocatalysts for effective antibiotic remediation.","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"6 8","pages":"e70375"},"PeriodicalIF":7.0,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13489318/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148798684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly Chiral MoS₂ Flakes With Redox-Active Centers for Spin Selective Water Oxidation. 具有氧化还原活性中心的高手性MoS2薄片用于自旋选择性水氧化。

IF 7

Small Science Pub Date : 2026-08-17 eCollection Date: 2026-08-01 DOI: 10.1002/smsc.70356

Anastasiia Tulupova, Denis Zabelin, Ivan Kirishiantsev, Ruslan Ramazanov, Rashid Valiev, Tomas Hrbek, Lucia Bajtosova, Miroslav Cieslar, Alena Michalcova, Vladislav Buravets, Vasilii Burtsev, Marie Urbanova, Vaclav Svorcik, Oleksiy Lyutakov

{"title":"Highly Chiral MoS2 Flakes With Redox-Active Centers for Spin Selective Water Oxidation.","authors":"Anastasiia Tulupova, Denis Zabelin, Ivan Kirishiantsev, Ruslan Ramazanov, Rashid Valiev, Tomas Hrbek, Lucia Bajtosova, Miroslav Cieslar, Alena Michalcova, Vladislav Buravets, Vasilii Burtsev, Marie Urbanova, Vaclav Svorcik, Oleksiy Lyutakov","doi":"10.1002/smsc.70356","DOIUrl":"https://doi.org/10.1002/smsc.70356","url":null,"abstract":"We propose a hydrothermal synthesis route for highly chiral two-dimensional flakes of MoS2 doped with single nickel atoms (Ni:MoS2) for spin-controlled water oxidation. Organic enantiomers were added to the reaction mixture as chiral encoders. The resulting MoS2 material obtained in the 1T phase exhibited wide absorption bands throughout the visible spectrum. Circular dichroism measurements indicated a pronounced chiroptical response at both UV and visible wavelengths. After delamination, the chirality was retained, and the Ni:MoS2 flakes were subsequently tested for water oxidation under the assumption that the flakes could support chiral-induced spin alignment of the transiting electrons. The chiral-induced spin selectivity (CISS) effect facilitates water oxidation kinetics and tunes the reaction selectivity toward oxygen production. The results of the electrochemical experiments, subsequently confirmed by density functional theory calculations, showed a significant decrease in the water-oxidation offset and onset potentials for the optimal combination of doping and flake chirality. In turn, the CISS effect manifests itself as an apparent suppression of hydrogen peroxide production and enhancement of oxygen production. Our work provides clear evidence of how chiral transition metal dichalcogenides can be used to tune the reaction efficiency and selectivity in energy-related applications.","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"6 8","pages":"e70356"},"PeriodicalIF":7.0,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13489294/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148798625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancement of Peptide-PAINT: Applications and Current Challenges in Super-Resolution Imaging. 肽-涂料的进展：在超分辨率成像中的应用和当前的挑战。

IF 7

Small Science Pub Date : 2026-08-17 eCollection Date: 2026-08-01 DOI: 10.1002/smsc.70381

Devi Prasanna Behera, Ritesh Sonar, Ahenjeeta Ghosh, Barun Kumar Maity

{"title":"Advancement of Peptide-PAINT: Applications and Current Challenges in Super-Resolution Imaging.","authors":"Devi Prasanna Behera, Ritesh Sonar, Ahenjeeta Ghosh, Barun Kumar Maity","doi":"10.1002/smsc.70381","DOIUrl":"https://doi.org/10.1002/smsc.70381","url":null,"abstract":"Super-resolution fluorescence microscopy has revolutionized the ability to probe biomolecular organization at the nanoscale in both fixed and living cells. Among various single-molecule localization microscopy approaches, Point Accumulation for Imaging in Nanoscale Topography (PAINT) offers a conceptually distinct framework by leveraging transient probe-target interactions rather than fluorophore photo-physics. Building on implementations such as DNA-PAINT, Peptide-PAINT has emerged as a versatile and accessible strategy for imaging protein organization with high specificity. This review provides a comprehensive overview of Peptide-PAINT, covering its fundamental principles and recent methodological advances, including exchangeable, fluorogenic, and endogenous labeling strategies. We highlight its capability for multiplexed imaging and discuss emerging applications in live-cell systems. Furthermore, we critically evaluate current limitations, including probe kinetics, orthogonality of peptide pairs, specificity, and intracellular delivery. Finally, we outline future directions for engineering robust, easy-to-implement Peptide-PAINT platforms for quantitative and high-throughput super-resolution imaging.","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"6 8","pages":"e70381"},"PeriodicalIF":7.0,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13489223/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148798723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tuning Conjugation and Charge Transport in Supramolecular Semiconductors via Hydrogen-Bonding Position. 基于氢键位置的超分子半导体调谐共轭和电荷输运。

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Small Science Pub Date : 2026-08-17 eCollection Date: 2026-08-01 DOI: 10.1002/smsc.70383

Raúl González-Núñez, Gabriel Martinez, Kyeong-Im Hong, Wakana Matsuda, Shu Seki, Pablo Lupiáñez-Garrido, Amparo Ruiz-Carretero, Rocío Ponce Ortiz

{"title":"Tuning Conjugation and Charge Transport in Supramolecular Semiconductors via Hydrogen-Bonding Position.","authors":"Raúl González-Núñez, Gabriel Martinez, Kyeong-Im Hong, Wakana Matsuda, Shu Seki, Pablo Lupiáñez-Garrido, Amparo Ruiz-Carretero, Rocío Ponce Ortiz","doi":"10.1002/smsc.70383","DOIUrl":"https://doi.org/10.1002/smsc.70383","url":null,"abstract":"Precise control over conjugation pathways is essential for developing high-performance organic semiconductors, particularly in hydrogen-bonded systems where subtle structural variations strongly influence hydrogen bond strength, molecular planarity, supramolecular organization, and charge transport. We demonstrate that the relative positioning of hydrogen-bonding with respect to a π-conjugated core enables the modulation of conjugation pathways through controlled intra- or intermolecular interactions. A series of diketopyrrolopyrrole small molecules bearing amides at defined distances from the conjugated backbone was designed to selectively favor distinct hydrogen-bonding types and strengths. Our combined approach, including density functional theory, vibrational and electronic spectroscopies, electrochemistry, and solid-state characterization, reveals that proximal amide groups favor intramolecular hydrogen-bonding, disrupting backbone planarity and limiting effective π-conjugation. In contrast, distal amides promote intermolecular hydrogen-bonding, sometimes involving DPP carbonyl groups, leading to extended conjugation pathways and enhanced supramolecular organization in the solid state. This modulation of hydrogen-bond topology and strength results in markedly different charge-carrier dynamics and transport, evidenced by electrodeless photoconductivity measurements and organic field-effect transistors. Overall, this work establishes hydrogen-bond and strength, rather than hydrogen-bonding alone, as key molecular design parameter to modulate conjugation extension and charge transport in hydrogen-bonded semiconductors, providing general insights for designing functional supramolecular electronic materials.","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"6 8","pages":"e70383"},"PeriodicalIF":7.0,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13489308/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148798811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Direct Observation of Interfacial Charge Transfer in Water Reduction at a Cu₂O Photocathode by In Situ Near-Field Heterodyne Transient Grating Spectroscopy. 用原位近场外差瞬态光栅直接观察Cu2O光电阴极水还原过程中的界面电荷转移。

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Small Science Pub Date : 2026-08-14 eCollection Date: 2026-08-01 DOI: 10.1002/smsc.70384

Seung Hyeon Jeong, Woon Yong Sohn

{"title":"Direct Observation of Interfacial Charge Transfer in Water Reduction at a Cu2O Photocathode by In Situ Near-Field Heterodyne Transient Grating Spectroscopy.","authors":"Seung Hyeon Jeong, Woon Yong Sohn","doi":"10.1002/smsc.70384","DOIUrl":"https://doi.org/10.1002/smsc.70384","url":null,"abstract":"We investigated the interfacial charge-carrier dynamics of a Cu2O photocathode during water reduction using near-field heterodyne transient grating (NF-HD-TG) spectroscopy. Systematic measurements under various applied potentials, electrolyte conditions, and scavenger environments revealed multiple charge transfer and recombination processes, providing direct insight into reduction-related electron dynamics. We were able to clearly observe signals arising from the interfacial electron transfer involved in the reduction process with a time constant of 1.33 × 10- 6 s using NF-HD-TG spectroscopy at 0 V RHE, where the water reduction reaction occurs, indicating that the electron transfer governing the reduction kinetics is relatively faster than the hole transfer during water oxidation. To elucidate the origin of the relatively fast electron transfer, we obtained temperature-dependent rate constants using NF-HD-TG spectroscopy, from which the activation energy was extracted. The results revealed that the rapid electron transfer originates from the relatively low activation energy of the electron-transfer process.","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"6 8","pages":"e70384"},"PeriodicalIF":7.0,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13489322/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148798579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Scalable Coating of Spatially Uniform WBG Perovskites via Inhibiting SAM Aggregation for Flexible All-Perovskite Tandem Modules. 通过抑制柔性全钙钛矿串联模块SAM聚集的空间均匀WBG钙钛矿可扩展涂层。

IF 7

Small Science Pub Date : 2026-08-14 eCollection Date: 2026-08-01 DOI: 10.1002/smsc.70379

Jincheng Luo, Jonathan S Austin, Alessia Romio, Antonio Cabas Vidani, Huagui Lai, Cédric Bühler, Stefano Saroglia, Pedro Octavio Quintana Ceres, Mirjana Dimitrievska, Thilo Glatzel, Chih-Jen Shih, Fan Fu

{"title":"Scalable Coating of Spatially Uniform WBG Perovskites via Inhibiting SAM Aggregation for Flexible All-Perovskite Tandem Modules.","authors":"Jincheng Luo, Jonathan S Austin, Alessia Romio, Antonio Cabas Vidani, Huagui Lai, Cédric Bühler, Stefano Saroglia, Pedro Octavio Quintana Ceres, Mirjana Dimitrievska, Thilo Glatzel, Chih-Jen Shih, Fan Fu","doi":"10.1002/smsc.70379","DOIUrl":"https://doi.org/10.1002/smsc.70379","url":null,"abstract":"Flexible all-perovskite tandem solar modules offer high power-to-weight ratios, making them promising for applications in flexible electronics and aerospace. However, their fabrication over large area remains challenging due to difficulties in achieving uniform coating and controlled crystallization of perovskites using scalable meniscus-based deposition methods, partly arising from poor ink-substrate adhesion. Herein, perovskite ink wettability is improved by utilizing nickel oxide (NiO x ) interlayer to suppress the aggregation of self-assembled molecules (SAMs) and enhance the hydrophilicity of the SAM layer. As a result, wide-bandgap (WBG) perovskite films were deposited onto large-area flexible substrates via doctor-blade coating, exhibiting excellent spatial uniformity and achieving minor pixel-to-pixel variation in power-conversion efficiencies (PCEs) on cell scale. The best-performing flexible WBG perovskite solar cells and mini-modules achieve PCEs of 16.7% and 13.3%, respectively. Furthermore, when integrated with a blade-coated narrow-bandgap perovskite subcell, this strategy enables the fabrication of flexible all-perovskite tandem solar cell with a PCE of 23.3%. An efficiency exceeding 20% is also demonstrated for flexible all-perovskite tandem mini-modules over an aperture area of 10.8 cm2. This study provides important insights into the regulation of SAM growth and establishes a foundation for the development of high-efficiency flexible all-perovskite tandem solar modules.","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"6 8","pages":"e70379"},"PeriodicalIF":7.0,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13489340/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148798824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polymers of Intrinsic Microporosity as Organic Cathodes for Fast-Charging Lithium-Ion Batteries. 本征微孔聚合物作为快速充电锂离子电池的有机阴极。

IF 7

Small Science Pub Date : 2026-08-13 eCollection Date: 2026-08-01 DOI: 10.1002/smsc.70364

Eva Vásquez-Barillas, Ani N Davis, A M Mahmudul Hasan, Amrit Kaur, Swapnanil Goswami, Kiana A Treaster, Kausturi Parui, John D Langhout, Rachel H Bianculli, Joshua D Marquez, Gabriel Carson, Austin M Evans, Megan M Butala

{"title":"Polymers of Intrinsic Microporosity as Organic Cathodes for Fast-Charging Lithium-Ion Batteries.","authors":"Eva Vásquez-Barillas, Ani N Davis, A M Mahmudul Hasan, Amrit Kaur, Swapnanil Goswami, Kiana A Treaster, Kausturi Parui, John D Langhout, Rachel H Bianculli, Joshua D Marquez, Gabriel Carson, Austin M Evans, Megan M Butala","doi":"10.1002/smsc.70364","DOIUrl":"https://doi.org/10.1002/smsc.70364","url":null,"abstract":"Developing fast-charging electrodes requires understanding how polymer architecture governs ion-transport, redox-site accessibility, and charge-storage mechanism. While porosity improves electrochemical performance, its role at fast-charging conditions remains unclear. We investigate the effects of porosity by comparing polymers with a naphthalene diimide (NDI) redox-active unit and two contorted monomers (triptycene-like [tryp] and spirobisindane [spiro]) to a nonporous model system (NDI-model). In galvanostatic cycling, NDI-model exhibits low accessible capacity even at slow rates (25.8 mAh g-1 at C/10), indicating limited ion transport, related to its low surface area (35 m2 g-1). NDI-spiro exhibits a superior performance, retaining 74% of its C/10 capacity at 20C. Cyclic voltammetry reveals a surface-controlled charge-storage mechanism for NDI-spiro, attributed to its higher surface area (273 m2 g-1), which allows greater accessibility of redox sites. In contrast, NDI-tryp achieves high capacity at slow rates (50.4 mAh g-1 at C/10), but suffers from diffusion limitations and poor rate capability, related with its diffusion-controlled charge-storage mechanism. Extending this study to spiro-based polymers with other redox active units, perylene diimide (PDI) and benzenediimide (BDI), shows that redox-unit identity affects kinetics and rate capability, shifting the charge-storage mechanism from surface-controlled to a diffusion-controlled. These findings establish structure-property relationships for designing high-performance fast-charging organic battery electrodes.","PeriodicalId":29791,"journal":{"name":"Small Science","volume":"6 8","pages":"e70364"},"PeriodicalIF":7.0,"publicationDate":"2026-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13489316/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148798749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0