FlatChem最新文献_第5页

Ionic liquid-aided liquid phase exfoliation of graphene and improved electric and electromagnetic properties of PLA/EVA/graphene composites 离子液体辅助石墨烯液相剥离及改善PLA/EVA/石墨烯复合材料的电、电磁性能

IF 5.9 3区材料科学

FlatChem Pub Date : 2025-06-05 DOI: 10.1016/j.flatc.2025.100893

Alessandra de A.P. Gabino , Bluma G. Soares , Elaine F. da Silva

{"title":"Ionic liquid-aided liquid phase exfoliation of graphene and improved electric and electromagnetic properties of PLA/EVA/graphene composites","authors":"Alessandra de A.P. Gabino , Bluma G. Soares , Elaine F. da Silva","doi":"10.1016/j.flatc.2025.100893","DOIUrl":"10.1016/j.flatc.2025.100893","url":null,"abstract":"<div><div>The dispersion of carbonaceous fillers in polymeric matrices presents a significant challenge due to the difference in surface energy between fillers and the polymers. In this study, a straightforward and cost-effective method was employed to exfoliate graphene nanoplatelets (GNP) in water using the liquid phase exfoliation (LPE) technique, with ionic liquids (ILs) serving as surfactants. The treated graphene was subsequently incorporated into PLA/EVA (60:40 wt%) composites, which were evaluated for their rheological and alternating current (AC) electrical properties, as well as their electromagnetic absorptivity in the X and Ku Band (8.2 to 18 GHz). Raman spectroscopy confirmed modifications in the GNP structure, indicating successful exfoliation. Fourier-transform infrared (FTIR) spectroscopy and thermogravimetric analysis (TGA) revealed that a portion of IL adhered to the GNP particles and was thus incorporated into the polymeric composites. The synthesized imidazole sultone-based IL promoted more intense exfoliation and particle fragmentation, leading to a reduction of electrical conductivity and electromagnetic absorptivity of the composite. In contrast, commercial IL, bmim.BF<sub>4</sub>, not only enhanced GNP dispersion but also influenced the morphology of the PLA/EVA composite, improving the continuity of EVA phase. This modification significantly lowered the composite's electrical percolation threshold and endowed the material with outstanding electromagnetic absorptivity properties, achieving a reflection loss (RL) below −30 dB and an effective absorption bandwidth (EAB) of 3.67 GHz, covering nearly the entire Ku-band frequency range, with only 5.0 wt% of treated GNP. This study provides novel insights into GNP exfoliation techniques utilizing environmentally friendly solvent and surfactants, and the fabrication of partially biodegradable polymeric composites for electromagnetic absorption applications, such as packaging in electronic devices.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"52 ","pages":"Article 100893"},"PeriodicalIF":5.9,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144241621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Effective photostability improvements of rhodamine 6G film via antioxidant addition 通过添加抗氧化剂有效改善罗丹明6G薄膜的光稳定性

IF 5.9 3区材料科学

FlatChem Pub Date : 2025-05-29 DOI: 10.1016/j.flatc.2025.100892

Hanyu Liu , Mingcai Xie , Jinling Ma , Zhihong Wei , Daocheng Hong , Yuxi Tian

引用次数: 0

Ultra-large memory window for non-volatile memory based on ReS2/hBN/Multilayer Graphene heterojunction 基于ReS2/hBN/多层石墨烯异质结的非易失性存储器超大存储窗口

IF 5.9 3区材料科学

FlatChem Pub Date : 2025-05-27 DOI: 10.1016/j.flatc.2025.100886

Jiawang You , Wenxiang Wang , Xiaohuan Li , Yushi Xu , Jinjin He , Han Mao , Zheng Wei , Lianfeng Sun , Xiaoqing Chen , Yong Jun Li , Zheng Liu , Hang Wei , Mei Xue

{"title":"Ultra-large memory window for non-volatile memory based on ReS2/hBN/Multilayer Graphene heterojunction","authors":"Jiawang You , Wenxiang Wang , Xiaohuan Li , Yushi Xu , Jinjin He , Han Mao , Zheng Wei , Lianfeng Sun , Xiaoqing Chen , Yong Jun Li , Zheng Liu , Hang Wei , Mei Xue","doi":"10.1016/j.flatc.2025.100886","DOIUrl":"10.1016/j.flatc.2025.100886","url":null,"abstract":"<div><div>With the rapid advancement of technology and the exponential growth of big data, the demand for high-performance memory devices intensifies. Non-volatile memories based on van der Waals materials garner significant attention due to their superior data retention and long-term storage capabilities. However, current floating-gate (FG) memories typically exhibit a memory window of less than 60 %, which limits data storage stability and device lifespan. Therefore, developing non-volatile FG memories with larger memory windows is crucial for modern digital technologies. In this work, we fabricate a non-volatile FG memory device based on a rhenium disulfide (ReS<sub>2</sub>)/hexagonal boron nitride (hBN)/multilayer graphene (MLG) heterostructure, ReS<sub>2</sub> serves as the channel material, hBN acts as the tunneling dielectric, and multilayer graphene functions as the floating gate. Due to the high carrier mobility of ReS<sub>2</sub> and the excellent charge storage and release capabilities of graphene, the device demonstrates a high on/off ratio (10<sup>6</sup>) and outstanding long-term data retention (>1000 s). It also exhibits low programming current and the potential for multi-level storage applications. Most notably, the device achieves a significant memory window of 85.5 %, enabling enhanced charge storage capacity and improved stability. This performance is attributed to the effective charge injection and retention enabled by Fowler–Nordheim tunneling through the hBN tunneling barrier These exceptional properties support the realization of efficient and stable data storage, which paves the way for developing next-generation memory technologies.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"52 ","pages":"Article 100886"},"PeriodicalIF":5.9,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Novel 2D/3D BiOBr/TiO2 S-scheme heterostructures photocatalyst fabrication for remarkable ciprofloxacin degradation under solar light 新型2D/3D BiOBr/TiO2 S-scheme异质结构光催化剂的制备，在太阳光下显著降解环丙沙星

IF 5.9 3区材料科学

FlatChem Pub Date : 2025-05-26 DOI: 10.1016/j.flatc.2025.100891

Mohd. Shkir, Atif Mossad Ali

{"title":"Novel 2D/3D BiOBr/TiO2 S-scheme heterostructures photocatalyst fabrication for remarkable ciprofloxacin degradation under solar light","authors":"Mohd. Shkir, Atif Mossad Ali","doi":"10.1016/j.flatc.2025.100891","DOIUrl":"10.1016/j.flatc.2025.100891","url":null,"abstract":"<div><div>The creation of sophisticated S-scheme heterojunction photocatalysts presents a pioneering approach to enhance pollutant degradation through improved charge separation and light absorption. This study introduces a novel 2D/3D BiOBr/TiO<sub>2</sub> S-scheme heterojunction photocatalyst designed to elevate the degradation efficiency of ciprofloxacin (CIP), an antibiotic contaminant, when exposed to natural sunlight. Characterization of the structure and morphology confirmed the successful integration of BiOBr nanosheets onto TiO<sub>2</sub> nanoparticles, resulting in an optimized heterostructure. Both TiO<sub>2</sub> and the BiOBr-modified TiO<sub>2</sub> (BiOBr/TiO<sub>2</sub>) were synthesized using a facile hydrothermal method followed by a slow evaporation process. The BiOBr/TiO<sub>2</sub> composite exhibited significantly enhanced visible-light absorption compared to pure TiO<sub>2</sub>, attributed to the light-absorbing properties of BiOBr and the effective formation of the S-scheme heterojunction. This configuration facilitated efficient charge separation, as demonstrated by photoluminescence (PL) quenching and decreased charge-transfer resistance observed in electrochemical impedance spectroscopy (EIS) analyses. The S-scheme mechanism enabled selective recombination of low-energy charge carriers while retaining high-energy electrons and holes, thus maximizing redox potential. Under sunlight irradiation, the BiOBr/TiO<sub>2</sub> composite achieved an impressive 93 % photocatalytic degradation of CIP, significantly outperforming both standalone TiO<sub>2</sub> and BiOBr. Trapping experiments highlighted the crucial roles of hydroxyl radicals (•OH<sup>−</sup>) and superoxide radicals (•O<sub>2</sub><sup>−</sup>) as reactive species driving the degradation process. This research underscores the substantial potential of S-scheme heterojunction photocatalysts for advanced wastewater treatment applications, offering a sustainable and effective solution to environmental remediation challenges.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"52 ","pages":"Article 100891"},"PeriodicalIF":5.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

3D printing of ZnO-modified hydroxyapatite scaffolds with directional pore microstructure for enhanced mechanical properties and biocompatibility 3D打印zno改性羟基磷灰石定向孔结构支架增强力学性能和生物相容性

IF 5.9 3区材料科学

FlatChem Pub Date : 2025-05-21 DOI: 10.1016/j.flatc.2025.100890

Xianglin Zhou , Wenya Zhou , Xiaolei Xie , Hongwei Chen , Mengli Li , Xu Zhen , Jing Ma , Zhiyang Lyu

{"title":"3D printing of ZnO-modified hydroxyapatite scaffolds with directional pore microstructure for enhanced mechanical properties and biocompatibility","authors":"Xianglin Zhou , Wenya Zhou , Xiaolei Xie , Hongwei Chen , Mengli Li , Xu Zhen , Jing Ma , Zhiyang Lyu","doi":"10.1016/j.flatc.2025.100890","DOIUrl":"10.1016/j.flatc.2025.100890","url":null,"abstract":"<div><div>Hydroxyapatite (HA) exhibits multifunctionality and wide applications in biological tissues such as vertebrate bones and teeth, due to facial element substitutions and chemical modifications of active surfaces in crystal structures with various inorganic or organic additives. It is a challenge to achieve biocompatible scaffolds that combine both high strength and toughness for the repair and regeneration of bone and tooth defects. In this study, we developed ZnO-modified hydroxyapatite 3D scaffolds with microscopic directional pore structures (∼20 μm) using a directional freezing-assisted direct-ink-writing (DIW) 3D printing technique. The directional pore microstructure significantly enhanced the mechanical properties compared to the non-directional scaffolds. Moreover, both experimental and molecular dynamics simulation results demonstrated that the incorporation of ZnO nanoparticles improved the sintering process, maintaining the directional pore microstructure while significantly increasing the mechanical strength. Notably, the coated hydroxyapatite scaffolds demonstrated excellent antimicrobial activity with ∼99 % antimicrobial resistance and biocompatibility with ∼89.96 % cell survival. This study presents an innovative approach for constructing directional porous hydroxyapatite scaffolds with multifunctionality and high mechanical properties, providing a promising foundation for advancements in dental restoration, implantable medical devices, and bone tissue engineering.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"52 ","pages":"Article 100890"},"PeriodicalIF":5.9,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Structural engineering of N/S co-doped hard carbon anodes for enhanced potassium storage performance 氮/硫共掺杂硬碳阳极增强储钾性能的结构工程研究

IF 5.9 3区材料科学

FlatChem Pub Date : 2025-05-21 DOI: 10.1016/j.flatc.2025.100889

Chen Zhang, Tao Wang, Jinjue Zeng, Xuebin Wang

{"title":"Structural engineering of N/S co-doped hard carbon anodes for enhanced potassium storage performance","authors":"Chen Zhang, Tao Wang, Jinjue Zeng, Xuebin Wang","doi":"10.1016/j.flatc.2025.100889","DOIUrl":"10.1016/j.flatc.2025.100889","url":null,"abstract":"<div><div>Potassium-ion batteries are an attractive replacement for lithium-ion batteries due to their abundance and economic viability. Nevertheless, its practical implementation is considerably obstructed by the inadequate electrochemical performance of carbonaceous anodes. A nitrogen/sulfur co-doped hard carbon (NSHC) material is synthesized <em>via</em> a straightforward pyrolysis process, employing phenolic resin and trithiocyanuric acid as the carbon and dopant precursors, respectively. Comprehensive structural analysis demonstrates that the dual-heteroatom co-doping effectively enlarges the interlayer distance and introduces substantial defects, both of which promote rapid potassium-ion diffusion and improve potassium-ion storage capability. Consequently, this optimized NSHC anode delivers exceptional electrochemical performance, including a capacity of 649.5 mAh g<sup>−1</sup> at 0.1 A g<sup>−1</sup> and a capacity of 100.1 mAh g<sup>−1</sup> at 10 A g<sup>−1</sup>, outperforming that of the undoped hard carbon (HC) counterpart. This work illuminates the structure-property relationship about heteroatom-doped carbon, providing a strategic framework for advanced PIB anode design.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"52 ","pages":"Article 100889"},"PeriodicalIF":5.9,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Improvement of solid-solid interface compatibility and capacitance retention of carbon electrode systems by using MXene as a transition layer 用MXene作为过渡层改善碳电极体系的固-固界面相容性和电容保持

IF 5.9 3区材料科学

FlatChem Pub Date : 2025-05-19 DOI: 10.1016/j.flatc.2025.100888

Yongfeng Bu , Yuman Li , Shihao Wang , Shengda Tang , Zhaomin Zhu , Li Pan , Hui Li , Hongyu Liang

{"title":"Improvement of solid-solid interface compatibility and capacitance retention of carbon electrode systems by using MXene as a transition layer","authors":"Yongfeng Bu , Yuman Li , Shihao Wang , Shengda Tang , Zhaomin Zhu , Li Pan , Hui Li , Hongyu Liang","doi":"10.1016/j.flatc.2025.100888","DOIUrl":"10.1016/j.flatc.2025.100888","url":null,"abstract":"<div><div>The development of low-internal-resistance and high-stability Al current collectors suitable for supercapacitor organic electrolytes has been desired due to the highly susceptible oxidative passivation problem. Existing solution strategies mainly focus on traditional modification techniques such as carbon-based coatings and surface roughness modulation, making them significantly deficient in terms of interfacial impedance compatibility and electrochemical stability. Herein, an innovative interfacial work function matching strategy utilizing MXene (Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>) as a transition layer material is first reported to address these concerns. Using a simple self-assembly method, we constructed an MXene transition layer (Al@MX) on the Al surface, which reduces the equivalent series resistance by more than 80 % and effectively improves capacitance retention from 7 % for bare Al to 61 % for Al@MX after 1000 cycles, as well as remarkable cycling stability. More importantly, the solid-solid interfacial electron transport barrier between Al current collector and YP50F active carbon material is significantly reduced by 24.7 %. These experimental results fully demonstrate that the proposed strategy effectively inhibits the oxidation of the Al current collector and suppresses the decay of capacitance. The unique two-dimensional structure of MXene, combined with its excellent electrochemical stability, offers a potential solution to match the work function of interfacial materials such as between the Al current collector and the carbon active material. This insight in the internal resistance reduction lays a critical technological foundation for developing high-performance SCs, and highlights the potential of MXene in enhancing the charge transfer and storage efficiency of energy storage devices.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"52 ","pages":"Article 100888"},"PeriodicalIF":5.9,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Phosphorus-containing nickel-based coatings for enhanced corrosion resistance and mechanical performance: A review 提高耐蚀性和机械性能的含磷镍基涂层研究进展

IF 5.9 3区材料科学

FlatChem Pub Date : 2025-05-17 DOI: 10.1016/j.flatc.2025.100887

Jiahuan Chen , Yuxin Deng , Ranran Cao , Ping Wang , Yanhua Mao , Chengxue Yi , Siqiao Zhang , Tingting Zhang , Xiang Liu

{"title":"Phosphorus-containing nickel-based coatings for enhanced corrosion resistance and mechanical performance: A review","authors":"Jiahuan Chen , Yuxin Deng , Ranran Cao , Ping Wang , Yanhua Mao , Chengxue Yi , Siqiao Zhang , Tingting Zhang , Xiang Liu","doi":"10.1016/j.flatc.2025.100887","DOIUrl":"10.1016/j.flatc.2025.100887","url":null,"abstract":"<div><div>Phosphorus (P), a well-established solid solution strengthening agent, can induce significant lattice distortions in metallic systems. The movement of dislocations in metals is obstructed, leading to improved ductility and toughness. Nickel‑phosphorus coatings, such as Ni<img>P, Ni-Co-P, Ni-W-P, and Ni-P-TiO₂ composites, exhibit exceptional mechanical performance and excellent corrosion resistance. Thus, Ni-P-based coatings are widely employed in various industrial sectors, including petrochemical processing, mechanical components, and medical devices. With the advancement of emerging manufacturing technologies, growing demands for advanced surface engineering have driven the development of diverse innovative high-performance phosphorus-containing coatings. Utilizing electroless deposition and electroplating techniques, we have developed novel anodized electroplating and sol-reinforced composite electroplating approaches. Nickel‑phosphorus coatings fabricated via anodic electroplating and sol-enhanced composite electroplating techniques demonstrate exceptional mechanical properties and anti-corrosion performance. The paper presents a comprehensive review of the structure-property relationships in novel nickel‑phosphorus coatings. It also focuses on the friction and corrosion mechanisms of Ni<img>P composite coatings and outlines promising research directions for future advancement and commercialization.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"52 ","pages":"Article 100887"},"PeriodicalIF":5.9,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144114861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Phase-selective synthesis of 2H-MoTe₂ via alkali-chalcogen exchange 碱-硫交换相选择合成2H-MoTe 2

IF 5.9 3区材料科学

FlatChem Pub Date : 2025-05-16 DOI: 10.1016/j.flatc.2025.100878

Mario Flores Salazar , Christian Mateo Frausto-Avila , Miguel Ángel Hernández-Vázquez , Victor Arellano-Arreola , Barbara A. Muñiz Martínez , Marisol Mayorga-Garay , Erik Díaz-Cervantes , Andrés De Luna Bugallo

{"title":"Phase-selective synthesis of 2H-MoTe₂ via alkali-chalcogen exchange","authors":"Mario Flores Salazar , Christian Mateo Frausto-Avila , Miguel Ángel Hernández-Vázquez , Victor Arellano-Arreola , Barbara A. Muñiz Martínez , Marisol Mayorga-Garay , Erik Díaz-Cervantes , Andrés De Luna Bugallo","doi":"10.1016/j.flatc.2025.100878","DOIUrl":"10.1016/j.flatc.2025.100878","url":null,"abstract":"<div><div>In this study, we explore the phase-selective synthesis of MoTe₂ through alkali-chalcogen exchange in MoS₂ crystals, facilitated by two alkali compounds: NaOH and KBr. The aim is to achieve the structural transformation from 2H-MoS₂ to 2H-MoTe₂ by atomic substitution of sulfur with tellurium. Our results demonstrate that at 500 °C, NaOH induces an uneven formation of both the 1 T’ and 2H phases of MoTe₂, whereas at 750 °C, KBr promotes the exclusive and homogeneous formation of the 2H phase. Raman spectroscopy, X-ray photoelectron spectroscopy, atomic force microscopy and scanning electron microscopy were used to characterize the resulting crystals. The KBr-assisted method results in a more uniform phase transition with higher crystallinity and better stability compared to the NaOH-assisted method, which also induces the formation of oxide and Na<img>O interaction. This study proposes a reaction pathway for KBr assisted process and highlights the advantages of KBr in achieving 2H phase-pure MoTe₂ through density functional theory calculations, which could create new opportunities for research in material engineering and its use in optoelectronic devices.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"52 ","pages":"Article 100878"},"PeriodicalIF":5.9,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144107340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Designing vertical aligned Zn microchannels for enhanced performance of Zn metal anodes 设计垂直排列的锌微通道以提高锌金属阳极的性能

IF 5.9 3区材料科学

FlatChem Pub Date : 2025-05-13 DOI: 10.1016/j.flatc.2025.100870

Yu Zhang , Wenjie Wu , Ning Yi , Rensuo Chen , Zhenhua Zhang , Xing Qiang , Zhen Shen , Li Shi , Jianyu Chen , Jin Zhao

{"title":"Designing vertical aligned Zn microchannels for enhanced performance of Zn metal anodes","authors":"Yu Zhang , Wenjie Wu , Ning Yi , Rensuo Chen , Zhenhua Zhang , Xing Qiang , Zhen Shen , Li Shi , Jianyu Chen , Jin Zhao","doi":"10.1016/j.flatc.2025.100870","DOIUrl":"10.1016/j.flatc.2025.100870","url":null,"abstract":"<div><div>Aqueous zinc-ion batteries hold significant promise for grid-scale energy storage due to their inherent safety, cost-effectiveness, and environmental compatibility. However, their practical deployment remains hindered by persistent challenges, including uncontrolled zinc dendrite formation and non-uniform metal deposition during repeated cycling. In this study, we propose a laser-etched zinc metal anode featuring vertically aligned, uniformly distributed pores (LVA<img>Zn) to address these limitations. By systematically tuning pore dimensions and spacing within the LVA-Zn microchannels, we demonstrate precise control over zinc deposition behavior. The vertical microchannels architecture homogenizes electric field distribution, lowering localized current density and guiding zinc to deposit preferentially within the pores rather than on the electrode surface. Furthermore, a polyimide coating applied to the anode surface mitigates parasitic reactions by shielding zinc from direct electrolyte contact. Symmetrical cells incorporating the optimized LVA-Zn anode exhibit exceptional cycling stability across a broad range of current densities (0.2–5 mA cm<sup>−2</sup>), maintaining stable voltage profiles with minimal polarization (30 mV at 5 mA cm<sup>−2</sup>). When integrated with MnO<sub>2</sub> cathodes in full-cell configurations, the system achieves a high reversible capacity of 270 mAh g<sup>−1</sup> and retains 98 % of its initial capacity after 300 cycles at 1 A g<sup>−1</sup>. These results highlight the synergistic benefits of structural engineering and interface modification in advancing durable, high-performance zinc-based energy storage systems.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"52 ","pages":"Article 100870"},"PeriodicalIF":5.9,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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