Energy & Environmental Materials最新文献_第3页

Ultra-Low Content Triethylammonium Chloride Facilitates Localized High-Concentration Electrolytes and Formation of Inorganic Solid Electrolyte Interface 超低含量三乙基氯化铵促进了局部高浓度电解质和无机固体电解质界面的形成

IF 14.1 2区材料科学

Energy & Environmental Materials Pub Date : 2025-05-05 DOI: 10.1002/eem2.70029

Zhihua Lin, Frederik Bettels, Taoran Li, Sreeja K. Satheesh, Haiwei Wu, Fei Ding, Chaofeng Zhang, Yuping Liu, Hui Ying Yang, Lin Zhang

{"title":"Ultra-Low Content Triethylammonium Chloride Facilitates Localized High-Concentration Electrolytes and Formation of Inorganic Solid Electrolyte Interface","authors":"Zhihua Lin, Frederik Bettels, Taoran Li, Sreeja K. Satheesh, Haiwei Wu, Fei Ding, Chaofeng Zhang, Yuping Liu, Hui Ying Yang, Lin Zhang","doi":"10.1002/eem2.70029","DOIUrl":"https://doi.org/10.1002/eem2.70029","url":null,"abstract":"Localized high-concentration electrolytes offer a potential solution for achieving uniform lithium deposition and a stable solid-electrolyte interface in Lithium metal batteries. However, the use of highly concentrated salts or structure-loaded diluents can result in significantly higher production costs and increased environmental burdens. Herein, a novel localized high-concentration electrolyte is developed, comprising ultra-low content (2% by mass) triethylammonium chloride as an electrolyte additive. The stable Lewis acid structure of the triethylammonium chloride molecule allows for the adsorption of numerous solvent molecules and TFSI− anions, intensifying the electrostatic interactions between lithium ions and anions. The chloride ions introduced by TC, along with TFSI− anions, integrate into the solvent sheath, forming a LiCl-rich inorganic SEI and enhancing the electrochemical performance of the lithium metal anode. The improved Li||Li cell shows excellent cycling stability for over 500 h at 1 mA cm2 with a 27 mV overpotential. This work provides insights into the impact of electrolyte additives on the electrode-electrolyte interface and Li-ion solvation, crucial for safer lithium metal battery development.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"8 5","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eem2.70029","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144773902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","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 “Highly Ion-Conductive 3D Hybrid Solid Polymer Electrolyte Using Al-Doped Li7La3Zr2O12 Embedded Electrospun 3D Nanowebs for Ambient-Temperature All-Solid Lithium Polymer Batteries” 对“室温全固态锂聚合物电池中使用掺铝Li7La3Zr2O12嵌入电纺丝3D纳米网的高离子导电性3D混合固体聚合物电解质”的修正

IF 14.1 2区材料科学

Energy & Environmental Materials Pub Date : 2025-05-05 DOI: 10.1002/eem2.70035

{"title":"Correction to “Highly Ion-Conductive 3D Hybrid Solid Polymer Electrolyte Using Al-Doped Li7La3Zr2O12 Embedded Electrospun 3D Nanowebs for Ambient-Temperature All-Solid Lithium Polymer Batteries”","authors":"","doi":"10.1002/eem2.70035","DOIUrl":"https://doi.org/10.1002/eem2.70035","url":null,"abstract":"Getachew M.B., Tien M.N., Do Y.K., Dong W.K., Jungdon S., and Yongku K. Highly Ion-Conductive 3D Hybrid Solid Polymer Electrolyte Using Al-Doped Li7La3Zr2O12 Embedded Electrospun 3D Nanowebs for Ambient-Temperature All-Solid Lithium Polymer Batteries. Energy Environ. Mater. 2025, 8, 3. https://doi.org/10.1002/eem2.12860In Experimental Section, the text “Detailed information related to the synthesis of active electrodes, physicochemical characterization, and electrochemical evaluation of bifunctional electrodes towards UOR and supercapacitor application is provided in Supporting Information” was incorrect. The corrected version is listed below.Corrected to read: “Detailed information on the fabrication of electrodes and solid electrolytes, along with the physicochemical characterization and electrochemical evaluation of the solid electrolytes for all-solid-state lithium polymer battery applications, is provided in the Supporting Information.”We apologize for this error.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"8 5","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eem2.70035","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144773901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unveiling Temperature-Dependent Behavior of AlN Piezoelectric Single Crystal: Insights at the Atomic Scale 揭示氮化铝压电单晶的温度依赖行为：在原子尺度上的见解

IF 14.1 2区材料科学

Energy & Environmental Materials Pub Date : 2025-04-24 DOI: 10.1002/eem2.70027

Yajing Fan, Lili Li, Linyu Bai, Qingzhi Song, Zijian Liu, Yanlu Li, Guodong Wang, Xiulan Duan, Lei Zhang, Fapeng Yu, Xiufeng Cheng, Xian Zhao

{"title":"Unveiling Temperature-Dependent Behavior of AlN Piezoelectric Single Crystal: Insights at the Atomic Scale","authors":"Yajing Fan, Lili Li, Linyu Bai, Qingzhi Song, Zijian Liu, Yanlu Li, Guodong Wang, Xiulan Duan, Lei Zhang, Fapeng Yu, Xiufeng Cheng, Xian Zhao","doi":"10.1002/eem2.70027","DOIUrl":"https://doi.org/10.1002/eem2.70027","url":null,"abstract":"Enhancing the stability of piezoelectric properties is essential for ensuring the reliability of high-temperature piezoelectric sensors. In this study, we have synthesized AlN piezoelectric crystals as representative materials and employed first-principles methods to investigate their temperature-dependent piezoelectric properties. By integrating the effects of lattice expansion and electron–phonon interactions, we accurately constructed the crystal structure of AlN across a wide temperature range and successfully predicted its piezoelectric behavior. Theoretical analysis reveals that ion polarization driven by lattice distortion and elastic softening of chemical bonds maintains the overall structural integrity of defect-free AlN single crystals, resulting in a stable piezoelectric coefficient d33 with a deviation of only 8.55% at temperatures up to 1300 K. However, experimental results indicate that the stability of the piezoelectric performance of the grown AlN crystals is disrupted at temperatures above 870 K. This temperature limitation is attributed to point defects within AlN crystals, particularly those caused by oxygen-substituted nitrogen (ON). These findings provide valuable guidance for enhancing the piezoelectric temperature stability of AlN crystals through optimized experimental conditions, such as oxygen atmosphere treatment and defect modification during crystal growth.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"8 5","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eem2.70027","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144774090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deciphering the Role of LiClO4 Salt on Electrochemical Properties of Plasticized Biopolymer Electrolytes for Superior EDLC Efficiency at Elevated Temperatures 破译LiClO4盐对塑化生物聚合物电解质电化学性能的作用，以获得高温下卓越的EDLC效率

IF 14.1 2区材料科学

Energy & Environmental Materials Pub Date : 2025-04-24 DOI: 10.1002/eem2.70023

Riyadh Abdekadir Khellouf, Vipin Cyriac, Constantin Bubulinca, Vladimir Sedlarik

{"title":"Deciphering the Role of LiClO4 Salt on Electrochemical Properties of Plasticized Biopolymer Electrolytes for Superior EDLC Efficiency at Elevated Temperatures","authors":"Riyadh Abdekadir Khellouf, Vipin Cyriac, Constantin Bubulinca, Vladimir Sedlarik","doi":"10.1002/eem2.70023","DOIUrl":"https://doi.org/10.1002/eem2.70023","url":null,"abstract":"The advancement of electric double-layer capacitors capable of operating beyond standard conditions is vital for meeting the demands of modern electronic applications. To realize this, huge efforts have been devoted to the development of biopolymer-based electrolytes. This study explores the potential application of a plasticized biopolymer-based electrolyte in electric double-layer capacitor systems at ambient and elevated temperatures. A plasticized Na CMC/PEO/LiClO4 electrolyte is successfully synthesized via a solution-casting approach. Fourier-transform infrared spectroscopy and X-ray diffraction verify the material's chemical and amorphous structure, respectively. The sample was designated as R20, with a salt concentration of 20 wt. % exhibits good electrochemical properties, including a high ionic conductivity of 3.73 × 10−4 S cm−1 and a wide electrochemical stability window of 3.2 V. The sample is placed into an electric double-layer capacitor cell and subjected to cyclic voltammetry and galvanostatic charge–discharge analyses at both room and high temperatures. The cyclic voltammetry test demonstrates that the electric double-layer capacitor achieves a specific capacitance (Cp) of 38 F g−1 at ambient temperature, which increases to 60 F g−1 at 60 °C. Additionally, the electric double-layer capacitor cell maintains consistent performance, demonstrating stable power and energy densities of 25 W kg−1 and 6 Wh kg−1, respectively, under both ambient and elevated temperatures.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"8 5","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eem2.70023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144774091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sodium-Manganese Oxides in Faradaic Desalination: Achieving Long-Cycling Stability Through Morphological and Structural Optimization 钠锰氧化物在法拉第海水淡化中的应用：通过形态和结构优化实现长周期稳定性

IF 14.1 2区材料科学

Energy & Environmental Materials Pub Date : 2025-04-21 DOI: 10.1002/eem2.70022

Alba Fombona-Pascual, Sergio Pinilla, Irene Hormigos, Jesús Palma, Julio J. Lado

{"title":"Sodium-Manganese Oxides in Faradaic Desalination: Achieving Long-Cycling Stability Through Morphological and Structural Optimization","authors":"Alba Fombona-Pascual, Sergio Pinilla, Irene Hormigos, Jesús Palma, Julio J. Lado","doi":"10.1002/eem2.70022","DOIUrl":"https://doi.org/10.1002/eem2.70022","url":null,"abstract":"Water scarcity, driven by climate change and population growth, necessitates innovative desalination technologies. Conventional methods for brackish water desalination are limited by high-energy demands, especially in the low salinity range, prompting the exploration of electrochemical approaches like faradaic deionization. Sodium-manganese oxides, traditionally used in sodium-ion batteries, show promise as faradaic deionization electrode materials due to their abundance, low toxicity, and cost-effectiveness. However, capacity fading during cycling, often caused by structural changes, volume expansion, or chemical transformations, remains a critical challenge. This study investigates the impact of morphology and crystal structure on the electrochemical performance of commercial and synthesized sodium-manganese oxides for faradaic deionization applications. Structural and electrochemical characterization in three-electrode cells with low-concentration electrolytes provided insights into the charge storage mechanisms. Rocking-chair full flow cell experiments demonstrated that the mixed-phase sodium-manganese oxide exhibited superior desalination performance, achieving a high salt removal capacity of 54.5 mg g−1 and a mean value in the salt removal rate of 1.49 mg g−1 min−1. Notably, mixed-phase sodium-manganese oxide maintained 98% capacity retention over 870 cycles, one of the longest reported cycling experiments in this field, effectively mitigating the Jahn-Teller effect. These findings highlight the crucial role of sodium-manganese oxide structure and morphology in electrochemical performance, positioning mixed-phase sodium-manganese oxide as a strong candidate for sustainable water treatment technologies.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"8 5","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eem2.70022","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144774114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Colossal Barocaloric Effects at Triple-Phase Points 三相点的巨大气压效应

IF 14.1 2区材料科学

Energy & Environmental Materials Pub Date : 2025-04-18 DOI: 10.1002/eem2.70021

Zhipeng Zhang, Fangbiao Li, Tingjiao Xiong, Zhao Zhang, Bing Li, Peng Tong, Xianlong Wang, Hui Wang, Qiang Zheng, Juan Du

{"title":"Colossal Barocaloric Effects at Triple-Phase Points","authors":"Zhipeng Zhang, Fangbiao Li, Tingjiao Xiong, Zhao Zhang, Bing Li, Peng Tong, Xianlong Wang, Hui Wang, Qiang Zheng, Juan Du","doi":"10.1002/eem2.70021","DOIUrl":"https://doi.org/10.1002/eem2.70021","url":null,"abstract":"Barocaloric effect underlies a promising emission-free and highly efficient cooling technology. The current wisdom to design barocaloric materials is to find materials undergoing a temperature-induced phase transition with huge latent heats and then to apply a pressure to harvest the heat. So far, the entropy change of the temperature-induced phase transition usually sets the upper limit for the barocaloric effect. Here we proposed and realized a large barocaloric effect at approaching a triple-phase point in odd-numbered n-alkanes. A low pressure can drive the phase transition from the liquid state to the disordered solid state and the phase transition from the disordered solid state to the ordered solid state to be merged at 297 K. These phase transition behaviors are well explained by in-situ Raman scattering and complementary molecular dynamics simulations. Around such a point, an adiabatic temperature change as large as ~30 K has been achieved under 150 MPa. The high coefficient of phase transition temperature with respect to pressure makes the triple-phase-point temperature to be continuously tuned by pressure and a wide refrigeration temperature window of more than 50 K (280–335 K) was realized. The strategy could initiate a new research avenue and shed light on designing novel high-performance barocaloric materials.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"8 5","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eem2.70021","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144773472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Accumulation of Long-Lived Photogenerated Holes at Copper Yolk-Shell Heterojunctions via Heterogeneous Contraction and Reduction Strategies for Enhanced Photocatalytic Oxidation 通过非均相收缩和还原策略在铜蛋黄壳异质结上积累长寿命光生空穴以增强光催化氧化

IF 14.1 2区材料科学

Energy & Environmental Materials Pub Date : 2025-04-18 DOI: 10.1002/eem2.70024

Tiancheng Li, Lingxiang Zhao, Faze Chen, Xinyue Cheng, Wei Xu, Zilian Liu, Qingqing Guan, Huajing Zhou, Liang He

{"title":"Accumulation of Long-Lived Photogenerated Holes at Copper Yolk-Shell Heterojunctions via Heterogeneous Contraction and Reduction Strategies for Enhanced Photocatalytic Oxidation","authors":"Tiancheng Li, Lingxiang Zhao, Faze Chen, Xinyue Cheng, Wei Xu, Zilian Liu, Qingqing Guan, Huajing Zhou, Liang He","doi":"10.1002/eem2.70024","DOIUrl":"https://doi.org/10.1002/eem2.70024","url":null,"abstract":"Active holes outperform photoelectron-mediated oxygen reduction in degrading recalcitrant organics under anaerobic conditions, yet their utilization is limited by rapid charge recombination. This challenge was addressed through Cu-based yolk-double-shell microspheres (Cu/Cu2O@C-2shell) engineered via heterogeneous contraction and reduction strategies. Work function analyses confirm Schottky junction-driven electron transfer from Cu2O to Cu, generating an internal electric field that suppresses backflow. Density functional theory reveals Cu-mediated enhancement of near-Fermi states (Cu 3d orbitals) and a directional Cu2O → Cu → C electron pathway, spatially isolating holes in Cu2O. Finite-difference time-domain simulations reveal light-induced electric field gradients in the dual-shell architecture: Cu0-mediated localized surface plasmon resonance effect enhances surface field concentration, while hierarchical interfaces create an outward-to-inward gradient, directing electron migration inward and stabilizing oxidative holes at the surface. The optimized (Cu/Cu2O)@C-2shell exhibits 38-fold higher tetracycline degradation under sunlight versus benchmarks, with treated water supporting Escherichia coli survival and wheat growth. This study provides a design strategy for the accumulation of long-lived holes on semiconductor photocatalysts.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"8 5","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eem2.70024","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144773471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Conductive Agent-Controlled Tortuosity in Solvent-Free Thick-Film Electrodes for High-Energy Lithium-Ion Batteries 高能锂离子电池无溶剂厚膜电极中导电剂控制的扭曲度

IF 14.1 2区材料科学

Energy & Environmental Materials Pub Date : 2025-04-17 DOI: 10.1002/eem2.70019

Byeongjin Kim, Dae Kyom Kim, Jeehoon Yu, Youngjae Yoo

{"title":"Conductive Agent-Controlled Tortuosity in Solvent-Free Thick-Film Electrodes for High-Energy Lithium-Ion Batteries","authors":"Byeongjin Kim, Dae Kyom Kim, Jeehoon Yu, Youngjae Yoo","doi":"10.1002/eem2.70019","DOIUrl":"https://doi.org/10.1002/eem2.70019","url":null,"abstract":"Rapid developments in lithium-ion battery (LIB) technology have been fueled by the expanding market for electric vehicles and increased demands for energy storage. Recently, thick electrode fabrication by solvent-free methods has emerged as a promising strategy for enhancing the energy density of LIBs. However, as electrode thickness increases, the tortuosity of lithium-ion transport also increases, resulting in severe polarization and poor electrochemical performance. Here, we investigate the effect of conductive agent morphology on the structural and electrochemical properties of 250 μm thick lithium iron phosphate (LFP)/conductive agent/polytetrafluoroethylene (PTFE)-based electrodes. Three commercially available conductive additives, namely 0D Super P, 1D multi-walled carbon nanotubes (MWCNTs), and 2D graphene nanoplatelets (GNPs), were incorporated into LFP-based electrodes. The MWCNT-incorporated electrode with a high loading mass (42 mg cm−2) exhibited a high porosity (ε = 51%) and low tortuosity (τ = 4.02) owing to its highly interconnected fibrous network of MWCNTs. Due to the fast lithium-ion transport kinetics in the MWCNT-incorporated electrode, the electrochemical performances exhibited a high specific capacity of 157 mAh g−1 at 0.1 C and an areal capacity of 7.16 mAh cm−2 at 0.1 C with a high-rate capability and excellent cycling stability over 300 cycles at 0.1 C. This study provides a guidance for utilizing conductive agents to apply in the low tortuous thick electrode fabricated by a solvent-free process. Additionally, this work paves the way to achieve scalable and sustainable dry processing techniques for developing next-generation energy storage technologies.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"8 5","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eem2.70019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144774104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced Electrochemical Stability of Solid-State Electrolyte-Coated High-Voltage LiNi0.5Mn1.5O4 Cathodes in Li-Ion Batteries 固态电解质包覆高压LiNi0.5Mn1.5O4阴极在锂离子电池中的电化学稳定性增强

IF 14.1 2区材料科学

Energy & Environmental Materials Pub Date : 2025-04-17 DOI: 10.1002/eem2.70025

Jong-Won Lim, Ji-Hwan Kim, Deok-Hye Park, Jae-Sung Jang, Won-Chan Kim, So-Yeon Ahn, Gang-In Lee, Ji-Min Hong, Se-Jun Park, Min-Jae Kim, Se-Yeon Jang, Kyung-Won Park

{"title":"Enhanced Electrochemical Stability of Solid-State Electrolyte-Coated High-Voltage LiNi0.5Mn1.5O4 Cathodes in Li-Ion Batteries","authors":"Jong-Won Lim, Ji-Hwan Kim, Deok-Hye Park, Jae-Sung Jang, Won-Chan Kim, So-Yeon Ahn, Gang-In Lee, Ji-Min Hong, Se-Jun Park, Min-Jae Kim, Se-Yeon Jang, Kyung-Won Park","doi":"10.1002/eem2.70025","DOIUrl":"https://doi.org/10.1002/eem2.70025","url":null,"abstract":"Spinel-structured LiNi0.5Mn1.5O4 cathodes in lithium-ion batteries have gained attention for their high operating voltage, which provides high energy density, and their cost advantages due to the absence of cobalt. However, issues such as low cycle and thermal stabilities have been identified, with side reactions occurring at the electrode/electrolyte interface during continuous charge/discharge cycles that degrade electrode performance. Herein, we first optimized LiNi0.5Mn1.5O4 using the Pechini sol–gel method to achieve uniform particles and controlled calcination temperatures. We then employed density functional theory and electrochemical testing to identify the optimal conditions. Uniform coating of the electrode surface with the oxide solid electrolyte Li6.28Al0.24La3Zr2O12 (LALZO) was confirmed, aiming to improve lithium-ion conductivity and enhance cycle and thermal stability. As a result, the formation of a coating layer on the electrode surface suppressed side reactions with the electrolyte and blocked contact, leading to an increase in ion conductivity. This improvement resulted in an enhanced rate capability and a significant increase in retention over 100 cycles at 0.2 C. Additionally, the interface resistance significantly improved with the coating layer, demonstrating reduced voltage decay due to overvoltage and improved interface stability. Finally, thermal stability was enhanced, with retention improving after 100 cycles at 0.5 C.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"8 5","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eem2.70025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144774098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High Performance Triboelectric Nanogenerator Based on Metal–Organic Framework Composites for IoT-Assisted Wireless Healthcare Monitoring 基于金属-有机框架复合材料的物联网辅助无线医疗监测高性能摩擦电纳米发电机

IF 14.1 2区材料科学

Energy & Environmental Materials Pub Date : 2025-04-15 DOI: 10.1002/eem2.70010

Shahzad Iqbal, Muhammad Muqeet Rehman, Zahir Abbas, Syed Adil Sardar, Muhammad Saqib, Yunsook Yang, Woo Young Kim

{"title":"High Performance Triboelectric Nanogenerator Based on Metal–Organic Framework Composites for IoT-Assisted Wireless Healthcare Monitoring","authors":"Shahzad Iqbal, Muhammad Muqeet Rehman, Zahir Abbas, Syed Adil Sardar, Muhammad Saqib, Yunsook Yang, Woo Young Kim","doi":"10.1002/eem2.70010","DOIUrl":"https://doi.org/10.1002/eem2.70010","url":null,"abstract":"Metal–organic frameworks (MOFs) are known for their high porosity and stability, making them ideal for various applications, including energy harvesting. A simple synthesis method was used to synthesize zinc-based metal–organic frameworks (Zn-MOFs) and introduce them into an ultra-stretchable Ecoflex polymer as functional fillers. We developed triboelectric nano generator (TENG) devices using Ecoflex, both pristine and modified with different Zn-MOF concentrations, to evaluate their performance. The output voltage, current, and instantaneous power of Zn-MOF-modified Ecoflex TENG devices were 3, 4, and 5 times higher than pristine Ecoflex TENGs. This improvement is due to Zn-MOF's large surface area, porous structure, charge trapping sites, improved surface roughness, and electron cloud conduction. The improved TENG device achieved 36 mW of maximum power and 40 mW m−2 power density. The Flexible TENG device powered LEDs and stored energy in capacitors by converting mechanical energy into electrical energy. We integrated flexible TENG device into cardiac patients' shoes to monitor running speeds and identify dangerous velocities using wireless IoT cloud monitoring. Real-time notifications and wireless data transmission to families and emergency personnel allowed immediate assistance.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"8 5","pages":""},"PeriodicalIF":14.1,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eem2.70010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144774040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0