Pub Date : 2025-01-22DOI: 10.1016/j.nanoen.2025.110695
Byung Gi Kim, Ji Yun Chun, Jae Sang Cho, Du Heon Ha, Woongsik Jang, Dong Hwan Wang
This study investigated the effects of γ-ray treatment on the NiOx (γ-Fixing NiOx) interlayer and the consequent impact on the performance of organic photodetectors. γ-Fixing NiOx sol-gels had reduced particle size distribution (4.26 ± 0.65 nm) and exhibit improved uniformity. The root-mean-square (RMS) roughness analysis revealed that the γ-Fixing sample exhibited 1.12 nm. It was 51.35% higher than that of the Pristine sample but 54.29% lower than that of the conventional Fixing sample. XPS analysis (Figure 3a,b) showed concurrent intensity increases in both oxidation states from pristine to γ-Fixing: Ni2O3 (856.5 eV, +0.89%) and NiO (854.0 eV, +1.81%). This resulted in a modified NiO/Ni2O3 ratio (1.003→1.013), supported by decreased Ni:O ratios (1:1.81→1:1.40) from EDS analysis (Figure 2 h), enhanced Ni-O bonding (676 cm-1) in FT-IR spectra (Figure 3 f), and improved oxidation resistance (Eonset,ox: 0.38 V→0.41 V) as shown in cyclic voltammetry data (Figure S1a-c and Table S1). These structural changes enhanced the electrical properties of the NiOx film, thereby significantly improving the performance of the fabricated organic photodetectors. The γ-ray-treated device exhibited a 99.29% reduction in dark current density to 8.00 × 10−11 A/cm2, an improved ideality factor of 1.38, and a 30.87% decrease in the defect state energy to 71.2 meV. Furthermore, the external quantum efficiency was >80% in the visible range and shot noise-limited detectivity was 1.00 × 1014 Jones - an 11.65-fold improvement in relation to that of the untreated sample. These findings demonstrated that γ-ray treatment effectively enhances the properties of the NiOx interlayer and would promote developing high-performance organic photodetectors.
{"title":"Suppression strategy of interfacial defects: γ-ray-induced nano structural rearrangement of NiOx sol-gel for highly sensitive organic photodetectors","authors":"Byung Gi Kim, Ji Yun Chun, Jae Sang Cho, Du Heon Ha, Woongsik Jang, Dong Hwan Wang","doi":"10.1016/j.nanoen.2025.110695","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110695","url":null,"abstract":"This study investigated the effects of γ-ray treatment on the NiO<sub>x</sub> (γ-Fixing NiO<sub>x</sub>) interlayer and the consequent impact on the performance of organic photodetectors. γ-Fixing NiO<sub>x</sub> sol-gels had reduced particle size distribution (4.26 ± 0.65<!-- --> <!-- -->nm) and exhibit improved uniformity. The root-mean-square (RMS) roughness analysis revealed that the γ-Fixing sample exhibited 1.12<!-- --> <!-- -->nm. It was 51.35% higher than that of the Pristine sample but 54.29% lower than that of the conventional Fixing sample. XPS analysis (<span><span>Figure 3</span></span>a,b) showed concurrent intensity increases in both oxidation states from pristine to γ-Fixing: Ni<sub>2</sub>O<sub>3</sub> (856.5<!-- --> <!-- -->eV, +0.89%) and NiO (854.0<!-- --> <!-- -->eV, +1.81%). This resulted in a modified NiO/Ni<sub>2</sub>O<sub>3</sub> ratio (1.003→1.013), supported by decreased Ni:O ratios (1:1.81→1:1.40) from EDS analysis (<span><span>Figure 2</span></span><strong> <!-- -->h</strong>), enhanced Ni-O bonding (676<!-- --> <!-- -->cm<sup>-1</sup>) in FT-IR spectra (<span><span>Figure 3</span></span><strong> <!-- -->f</strong>), and improved oxidation resistance (E<sub>onset,ox</sub>: 0.38<!-- --> <!-- -->V→0.41<!-- --> <!-- -->V) as shown in cyclic voltammetry data (<span><span>Figure S1a</span></span><strong>-c</strong> and <span><span>Table S1</span></span>). These structural changes enhanced the electrical properties of the NiO<sub>x</sub> film, thereby significantly improving the performance of the fabricated organic photodetectors. The γ-ray-treated device exhibited a 99.29% reduction in dark current density to 8.00 × 10<sup>−11</sup> A/cm<sup>2</sup>, an improved ideality factor of 1.38, and a 30.87% decrease in the defect state energy to 71.2<!-- --> <!-- -->meV. Furthermore, the external quantum efficiency was >80% in the visible range and shot noise-limited detectivity was 1.00 × 10<sup>14</sup> Jones - an 11.65-fold improvement in relation to that of the untreated sample. These findings demonstrated that γ-ray treatment effectively enhances the properties of the NiO<sub>x</sub> interlayer and would promote developing high-performance organic photodetectors.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"3 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-22DOI: 10.1016/j.nanoen.2025.110699
Yanan Bai, Chong Guo, Zhijie Huang, Shengjie Yin, Chris R. Bowen, Ya Yang
The “vital capacity” is a crucial biomechanical marker for evaluating lung health, and is crucial for diagnosing conditions that include asthma and chronic obstructive pulmonary disease (COPD). However, existing monitoring devices are often limited by their dependence on an external power source, and are susceptible to environmental impact to reduce the accuracy of detection. This study therefore presents a novel magnetoelectric triggered sensor (MTS) for self-powered vital capacity monitoring, where the sensor can directly convert the respiratory airflow into electrical signals and monitor vital capacity. The MTS maintains high signal stability, even when operating in high-humidity environments, to enable precise monitoring of the Forced Vital Capacity (FVC) and Peak Expiratory Flow (PEF), thereby serving as an effective instrument for evaluating vital capacity function. This work not only highlights the significant potential of this new approach to self-powered spirometry sensing but also paves the way for the development of portable and wearable devices for the monitoring of respiratory disease.
{"title":"Magnetoelectric triggered self-powered vital capacity sensor","authors":"Yanan Bai, Chong Guo, Zhijie Huang, Shengjie Yin, Chris R. Bowen, Ya Yang","doi":"10.1016/j.nanoen.2025.110699","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110699","url":null,"abstract":"The “vital capacity” is a crucial biomechanical marker for evaluating lung health, and is crucial for diagnosing conditions that include asthma and chronic obstructive pulmonary disease (COPD). However, existing monitoring devices are often limited by their dependence on an external power source, and are susceptible to environmental impact to reduce the accuracy of detection. This study therefore presents a novel magnetoelectric triggered sensor (MTS) for self-powered vital capacity monitoring, where the sensor can directly convert the respiratory airflow into electrical signals and monitor vital capacity. The MTS maintains high signal stability, even when operating in high-humidity environments, to enable precise monitoring of the Forced Vital Capacity (FVC) and Peak Expiratory Flow (PEF), thereby serving as an effective instrument for evaluating vital capacity function. This work not only highlights the significant potential of this new approach to self-powered spirometry sensing but also paves the way for the development of portable and wearable devices for the monitoring of respiratory disease.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"10 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-22DOI: 10.1016/j.nanoen.2025.110683
Minghang Jiang, Xiaochuan Huang, Dan Luo, Chen Tian, Zhong Jin
Ammonia (NH3) synthesis using nitrogen-oxyanions (NOx−, such as NO3− and NO2−) as source materials powered by renewable electricity under ambient conditions provide a promising route to realize artificial nitrogen recycling and mitigate environmental pollution. Despite numerous reports showcasing a Faraday efficiency (FENH3) of approximately 90% for electrochemical NOx− reduction to NH3 under specific conditions, the rational design of highly efficient electrocatalysts that can withstand future demanding industrial testing conditions remains a persistent challenge. In this review, we introduce and delve into the prevalent theories and mechanisms of electrochemical NOx− reduction for NH3 synthesis, aiming to provide guidance for the design of catalysts. Subsequently, we present recent ground-breaking efforts in the realm of electrochemical NH3 synthesis via NOx− reduction reaction (NOx−RR), engaging in a discourse centred on the design of diverse electrocatalysts. Furthermore, a summary and analysis of the potential commercial feasibility of electrocataltyic NOx− reduction for NH3 synthesis have been conducted, with the goal of providing valuable insights and references for the subsequent large-scale development and application of this technology. Finally, the remaining challenges and prospects in this field have been highlighted. This review provides a comprehensive understanding of electrochemical NOx− reduction for NH3 synthesis, setting the stage for future innovations in efficient, large-scale electrochemical NH3 production technologies.
{"title":"Recent Breakthroughs in Electrocatalytic Reduction of Nitrogen-Oxyanions for Environmentally Benign Ammonia Synthesis","authors":"Minghang Jiang, Xiaochuan Huang, Dan Luo, Chen Tian, Zhong Jin","doi":"10.1016/j.nanoen.2025.110683","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110683","url":null,"abstract":"Ammonia (NH<sub>3</sub>) synthesis using nitrogen-oxyanions (NO<sub>x</sub><sup>−</sup>, such as NO<sub>3</sub><sup>−</sup> and NO<sub>2</sub><sup>−</sup>) as source materials powered by renewable electricity under ambient conditions provide a promising route to realize artificial nitrogen recycling and mitigate environmental pollution. Despite numerous reports showcasing a Faraday efficiency (FE<sub>NH3</sub>) of approximately 90% for electrochemical NO<sub>x</sub><sup>−</sup> reduction to NH<sub>3</sub> under specific conditions, the rational design of highly efficient electrocatalysts that can withstand future demanding industrial testing conditions remains a persistent challenge. In this review, we introduce and delve into the prevalent theories and mechanisms of electrochemical NO<sub>x</sub><sup>−</sup> reduction for NH<sub>3</sub> synthesis, aiming to provide guidance for the design of catalysts. Subsequently, we present recent ground-breaking efforts in the realm of electrochemical NH<sub>3</sub> synthesis via NO<sub>x</sub><sup>−</sup> reduction reaction (NO<sub>x</sub><sup>−</sup>RR), engaging in a discourse centred on the design of diverse electrocatalysts. Furthermore, a summary and analysis of the potential commercial feasibility of electrocataltyic NO<sub>x</sub><sup>−</sup> reduction for NH<sub>3</sub> synthesis have been conducted, with the goal of providing valuable insights and references for the subsequent large-scale development and application of this technology. Finally, the remaining challenges and prospects in this field have been highlighted. This review provides a comprehensive understanding of electrochemical NO<sub>x</sub><sup>−</sup> reduction for NH<sub>3</sub> synthesis, setting the stage for future innovations in efficient, large-scale electrochemical NH<sub>3</sub> production technologies.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"32 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143019997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-21DOI: 10.1016/j.nanoen.2025.110693
Muhammad Yasir, Zhiliang Zhao, Yongming Hu, Xinyi Zhang, Haunting Wang
Atmospheric nitrogen fixation has been a cornerstone for ammonia synthesis for centuries, yet the Haber-Bosch process, despite its effectiveness, demands high energy input and accounts for about 450 million metric tons (Mt) of carbon dioxide emissions annually. The urgency to transition toward sustainable methodologies has propelled the development of electrochemical strategies for nitrogen reduction into ammonia, leveraging renewable energy and minimizing environmental impact. Developing new technologies and methodologies is crucial in the synthesis and characterization of advanced catalysts for green ammonia production. This review converges on advancements in promoting the catalyst’s performance through structural engineering with a focus on optimizing morphology, defect engineering, doping, and synergistic heterostructure. Moreover, the significance of operando characterization techniques in combination with theoretical models in elucidating reaction mechanisms and guiding catalyst design is underscored. By encapsulating the challenges such as low selectivity and energy efficiency that presently hinder wide-scale adoption, this comprehensive overview not only spotlights the latest research on electrocatalytic materials but also aims to foster innovation toward efficient, sustainable ammonia production solutions.
{"title":"Structural Engineering and Operando Characterization of Advanced Catalysts for Electrochemical Nitrogen Reduction Reaction","authors":"Muhammad Yasir, Zhiliang Zhao, Yongming Hu, Xinyi Zhang, Haunting Wang","doi":"10.1016/j.nanoen.2025.110693","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110693","url":null,"abstract":"Atmospheric nitrogen fixation has been a cornerstone for ammonia synthesis for centuries, yet the Haber-Bosch process, despite its effectiveness, demands high energy input and accounts for about 450 million metric tons (Mt) of carbon dioxide emissions annually. The urgency to transition toward sustainable methodologies has propelled the development of electrochemical strategies for nitrogen reduction into ammonia, leveraging renewable energy and minimizing environmental impact. Developing new technologies and methodologies is crucial in the synthesis and characterization of advanced catalysts for green ammonia production. This review converges on advancements in promoting the catalyst’s performance through structural engineering with a focus on optimizing morphology, defect engineering, doping, and synergistic heterostructure. Moreover, the significance of operando characterization techniques in combination with theoretical models in elucidating reaction mechanisms and guiding catalyst design is underscored. By encapsulating the challenges such as low selectivity and energy efficiency that presently hinder wide-scale adoption, this comprehensive overview not only spotlights the latest research on electrocatalytic materials but also aims to foster innovation toward efficient, sustainable ammonia production solutions.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"18 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-21DOI: 10.1016/j.nanoen.2025.110700
Hongchun Mu, Qian He, Zekai Zhang, Hengyi Wang, Hongli Chen, Haiping Su, Juchen Guo, Jingkun Li, Honglai Liu, Cheng Lian
The unfavorable side reactions (e.g., hydrogen evolution reaction), nonuniform diffusion of Zn2+ and dendrite growth severely hamper the large-scale applicability of aqueous Zn ion batteries. Herein, we introduce a multifunctional protective layer of porous diatomite (DE) to modify Zn anodes. The chemical bonding and electrostatic interactions of H2O with Si-OH groups in DE endow it with a chromatographic column-like layer-by-layer adsorption effect, leading to inhibited hydrogen evolution reaction and accelerated desolvation kinetics of Zn (H2O)62+. Furthermore, the chemically cross-linked structure of Si-O-Zn significantly improves the interfacial stability of the Zn surface, inducing a 3D diffusion of Zn2+ and a dendrite-free deposition layer. As a result, the DE-modified Zn anode (DE@Zn) enables a long stable cycling of more than 2400 h at 1 mA cm−2 in Zn/Zn symmetrical cells. We further demonstrate a DE@Zn//V2O3@CNFs flexible battery delivering an excellent reversible capacity. This work highlights the importance of the layer-by-layer adsorption mechanism for ion uniform deposition and provides a promising strategy to stabilize metal electrodes.
不利的副反应（如析氢反应）、Zn2+的不均匀扩散和枝晶生长严重阻碍了水性锌离子电池的大规模适用性。在此，我们引入了一种多孔硅藻土（DE）多功能保护层来修饰锌阳极。DE中H2O与Si-OH基团的化学键和静电相互作用使其具有层析柱状的层层吸附效应，从而抑制析氢反应，加速Zn (H2O)62+的脱溶动力学。此外，Si-O-Zn的化学交联结构显著提高了Zn表面的界面稳定性，诱导了Zn2+的三维扩散和无枝晶沉积层。因此，de修饰的Zn阳极（DE@Zn）可以在Zn/Zn对称电池中以1ma cm - 2的速度长时间稳定循环2400小时以上。我们进一步展示了一种DE@Zn//V2O3@CNFs柔性电池，提供了出色的可逆容量。这项工作强调了离子均匀沉积的逐层吸附机制的重要性，并为稳定金属电极提供了一种有前途的策略。
{"title":"Interfacial Layer-adsorption Effect Induces Uniform Deposition for Stable Zn Anodes","authors":"Hongchun Mu, Qian He, Zekai Zhang, Hengyi Wang, Hongli Chen, Haiping Su, Juchen Guo, Jingkun Li, Honglai Liu, Cheng Lian","doi":"10.1016/j.nanoen.2025.110700","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110700","url":null,"abstract":"The unfavorable side reactions (<em>e.g.</em>, hydrogen evolution reaction), nonuniform diffusion of Zn<sup>2+</sup> and dendrite growth severely hamper the large-scale applicability of aqueous Zn ion batteries. Herein, we introduce a multifunctional protective layer of porous diatomite (DE) to modify Zn anodes. The chemical bonding and electrostatic interactions of H<sub>2</sub>O with Si-OH groups in DE endow it with a chromatographic column-like layer-by-layer adsorption effect, leading to inhibited hydrogen evolution reaction and accelerated desolvation kinetics of Zn (H<sub>2</sub>O)<sub>6</sub><sup>2+</sup>. Furthermore, the chemically cross-linked structure of Si-O-Zn significantly improves the interfacial stability of the Zn surface, inducing a 3D diffusion of Zn<sup>2+</sup> and a dendrite-free deposition layer. As a result, the DE-modified Zn anode (DE@Zn) enables a long stable cycling of more than 2400<!-- --> <!-- -->h at 1<!-- --> <!-- -->mA<!-- --> <!-- -->cm<sup>−2</sup> in Zn/Zn symmetrical cells. We further demonstrate a DE@Zn//V<sub>2</sub>O<sub>3</sub>@CNFs flexible battery delivering an excellent reversible capacity. This work highlights the importance of the layer-by-layer adsorption mechanism for ion uniform deposition and provides a promising strategy to stabilize metal electrodes.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"32 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Passive radiant cooling fabrics (PRCF) can effectively reduce the human body surface temperature and alleviate heat stress without consuming energy. These textiles show tremendous potential for personal thermal management and are widely used in outdoor sports, high-temperature operations and other scenarios. However, the development of fiber products with radiative cooling properties from biomass resources presents a considerable challenge. Herein, the hollow silica/regenerated cellulose composite aerogel fibers with a tree-ring structure (HSiO2/C@C) were continuously fabricated by a novel strategy combining wet coaxial spinning and atmospheric pressure drying. Regenerated cellulose aerogel mixed with hollow silica as a sheath layer imparts the fibers with strong backscattering properties, higher porosity, and guarantees high solar reflectance (92.6%), high infrared emissivity (96.1%), and improved thermal insulation (0.062 W·m-1K-1). The relatively dense cellulose aerogel core layer provides the composite fibers with robust mechanical strength (19.4 MPa). The outdoor all-day test further demonstrated that the HSiO2/C@C fibers exhibit high-performance cooling with an average sub-ambient temperature drop of ~1.3°C under 850 W·m-2 solar irradiation and ~ 4.2°C for nighttime. The fabric-covered arm showed a temperature reduction of 4°C compared with that covered with cotton fabric. The passive radiation cooling textile can also apply to buildings, vehicles and other fields contributing to energy saving and environmental protection. In addition, the hydrophobic modified aerogel fabric shows good comprehensive outdoor-services performance, including good air permeability, anti-dust and durability, thus broadening its applicability in complex environments. This scalable and renewable composite aerogel fiber holds promise as the next generation of personal thermal management textiles for all-day superior radiant cooling.
{"title":"Large-scale continuous production of cellulose/hollow SiO2 composite aerogel fibers for outdoor all-day radiation cooling","authors":"Shan Jiang, Shaoqi Jiang, Jiatong Yan, Chuanxi Lin, Weijie Wang, Shouxiang Jiang, Ronghui Guo","doi":"10.1016/j.nanoen.2025.110688","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110688","url":null,"abstract":"Passive radiant cooling fabrics (PRCF) can effectively reduce the human body surface temperature and alleviate heat stress without consuming energy. These textiles show tremendous potential for personal thermal management and are widely used in outdoor sports, high-temperature operations and other scenarios. However, the development of fiber products with radiative cooling properties from biomass resources presents a considerable challenge. Herein, the hollow silica/regenerated cellulose composite aerogel fibers with a tree-ring structure (HSiO<sub>2</sub>/C@C) were continuously fabricated by a novel strategy combining wet coaxial spinning and atmospheric pressure drying. Regenerated cellulose aerogel mixed with hollow silica as a sheath layer imparts the fibers with strong backscattering properties, higher porosity, and guarantees high solar reflectance (92.6%), high infrared emissivity (96.1%), and improved thermal insulation (0.062<!-- --> <!-- -->W·m<sup>-1</sup>K<sup>-1</sup>). The relatively dense cellulose aerogel core layer provides the composite fibers with robust mechanical strength (19.4<!-- --> <!-- -->MPa). The outdoor all-day test further demonstrated that the HSiO<sub>2</sub>/C@C fibers exhibit high-performance cooling with an average sub-ambient temperature drop of ~1.3°C under 850<!-- --> <!-- -->W·m<sup>-2</sup> solar irradiation and ~ 4.2°C for nighttime. The fabric-covered arm showed a temperature reduction of 4°C compared with that covered with cotton fabric. The passive radiation cooling textile can also apply to buildings, vehicles and other fields contributing to energy saving and environmental protection. In addition, the hydrophobic modified aerogel fabric shows good comprehensive outdoor-services performance, including good air permeability, anti-dust and durability, thus broadening its applicability in complex environments. This scalable and renewable composite aerogel fiber holds promise as the next generation of personal thermal management textiles for all-day superior radiant cooling.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"20 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-21DOI: 10.1016/j.nanoen.2025.110701
Xiang Ding, Qiaoying Zhu, Yong Fan, Yibing Yang, Liangwei Liu, Yu Shao, Yi Xiao, Chih-Hung Wu, Lili Han
Layered hydrated V2O5·xH2O cathodes are endowed with the advantage of sufficient theoretical specific capacity (589 mA h g-1) in aqueous zinc-ion batteries (AZIBs), yet accompanied by poor bulk conductivity and structural collapse during long-periodic cycling. Herein, we design a series of high-entropy doped V2O5·0.48H2O by incorporating Na+/Al3+/Ni2+/NH4+/F- into interlayer simultaneously. In-situ XRD and in-situ DRT analyses profoundly elucidate the enormously enhanced structural reversibility/stability and faster electron/ion transfer efficiency derived from the high-entropy effects. DFT calculations clarify the augmented bulk electronic conductivity stemming from the more abundant electron cloud density near the Fermi level and more conduction and valence bands available for transition. Benefiting from the high-entropy design, the optimal cathode in coin-cells can display competitive discharge capacity of 546 mA h g-1 at 0.1 C, rate capabilities (458 mA h g-1@1 C; 322 mA h g-1@10 C), and cyclic stability (5000 cycles@10 C@98% retention). Also, the pouch-cells with high-load (65 mg) also deliver superior cyclic and rate performance at both room (190 mA h g-1@1000 cycles@86.8% retention; 25 ℃) and low temperature (171 mA h g-1@200 cycles@82.3% retention; -20 ℃), manifesting valuable insights for designing ultra-high-capacity V-based cathodes with long-life stability for AZIBs.
层状水合V2O5·xH2O阴极在水锌离子电池（AZIBs）中具有足够的理论比容量（589 mA h g-1），但在长周期循环过程中存在体电导率差和结构崩溃的问题。本文通过将Na+/Al3+/Ni2+/NH4+/F-同时掺入中间层，设计了一系列高熵掺杂V2O5·0.48H2O。原位XRD和原位DRT分析深刻地阐明了高熵效应极大地增强了结构的可逆性/稳定性和更快的电子/离子转移效率。DFT计算澄清了由于费米能级附近更丰富的电子云密度和更多可用于跃迁的传导和价带而增加的体电子导电性。得益于高熵设计，硬币电池的最佳阴极可以在0.1 C下显示546 mA h g-1的竞争放电容量，速率能力(458 mA h g-1@1 C；322 mA h g-1@10 C)，循环稳定性（5000 cycles@10 C@98%保留率）。此外，高负载（65 mg）的袋细胞在两个房间(190 mA h g-1@1000 cycles@86.8%保留率；25℃)和低温(171 mA h g-1@200 cycles@82.3%保留率；-20℃)，为设计具有长寿命稳定性的azib超高容量v基阴极提供了有价值的见解。
{"title":"High-entropy V-based cathode for high-capacity and long-life aqueous zinc-ion battery","authors":"Xiang Ding, Qiaoying Zhu, Yong Fan, Yibing Yang, Liangwei Liu, Yu Shao, Yi Xiao, Chih-Hung Wu, Lili Han","doi":"10.1016/j.nanoen.2025.110701","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110701","url":null,"abstract":"Layered hydrated V<sub>2</sub>O<sub>5</sub>·xH<sub>2</sub>O cathodes are endowed with the advantage of sufficient theoretical specific capacity (589 mA h g<sup>-1</sup>) in aqueous zinc-ion batteries (AZIBs), yet accompanied by poor bulk conductivity and structural collapse during long-periodic cycling. Herein, we design a series of high-entropy doped V<sub>2</sub>O<sub>5</sub>·0.48H<sub>2</sub>O by incorporating Na<sup>+</sup>/Al<sup>3+</sup>/Ni<sup>2+</sup>/NH<sub>4</sub><sup>+</sup>/F<sup>-</sup> into interlayer simultaneously. In-situ XRD and in-situ DRT analyses profoundly elucidate the enormously enhanced structural reversibility/stability and faster electron/ion transfer efficiency derived from the high-entropy effects. DFT calculations clarify the augmented bulk electronic conductivity stemming from the more abundant electron cloud density near the Fermi level and more conduction and valence bands available for transition. Benefiting from the high-entropy design, the optimal cathode in coin-cells can display competitive discharge capacity of 546 mA h g<sup>-1</sup> at 0.1 C, rate capabilities (458 mA h g<sup>-1</sup>@1 C; 322 mA h g<sup>-1</sup>@10 C), and cyclic stability (5000 cycles@10 C@98% retention). Also, the pouch-cells with high-load (65 mg) also deliver superior cyclic and rate performance at both room (190 mA h g<sup>-1</sup>@1000 cycles@86.8% retention; 25 ℃) and low temperature (171 mA h g<sup>-1</sup>@200 cycles@82.3% retention; -20 ℃), manifesting valuable insights for designing ultra-high-capacity V-based cathodes with long-life stability for AZIBs.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"52 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-21DOI: 10.1016/j.nanoen.2025.110680
Jia Wei, Hao Chen, Jingchong Liu, Fuqiang Wang, Cunhai Wang
Solar cells (SCs) convert sunlight directly into electricity via the photovoltaic (PV) effect, paving a fossil fuel-free way to meet the increasing demand for renewable sources. However, most solar radiation (~ 80%) is transformed into thermal parasites that heat solar panels, significantly degrading the efficiency and life span of SCs. Passive sky radiative cooling (RC), which cools terrestrial objects by dissipating excessive thermal emission into the ultracold (~ 3 K) space, appears as an emerging cooling technology and has attracted considerable attention. As SCs are predominantly engaged in PV conversion during daytime, the incorporation of RC technology enables temperature decrease, subsequently boosting solar-to-electricity efficiency. Besides, integrating RC into SCs allows night cold harvesting that could be employed for daytime thermal management, further improving energy efficiency. Therefore, integrating RC with SCs represents a promising, energy-free way towards enhanced energy efficiency. This review commences with the energy balance within SCs and fundamental principles of RC technologies, summarizes remarkable daytime RC materials for temperature reduction and efficiency improvement of SCs, continues with innovative PV systems that integrate nighttime RC technologies, and finally ends with challenges and perspectives towards enhanced energy efficiency in PV systems via passive RC technologies.
{"title":"Radiative cooling technologies toward enhanced energy efficiency of solar cells: Materials, systems, and perspectives","authors":"Jia Wei, Hao Chen, Jingchong Liu, Fuqiang Wang, Cunhai Wang","doi":"10.1016/j.nanoen.2025.110680","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110680","url":null,"abstract":"Solar cells (SCs) convert sunlight directly into electricity via the photovoltaic (PV) effect, paving a fossil fuel-free way to meet the increasing demand for renewable sources. However, most solar radiation (~ 80%) is transformed into thermal parasites that heat solar panels, significantly degrading the efficiency and life span of SCs. Passive sky radiative cooling (RC), which cools terrestrial objects by dissipating excessive thermal emission into the ultracold (~ 3<!-- --> <!-- -->K) space, appears as an emerging cooling technology and has attracted considerable attention. As SCs are predominantly engaged in PV conversion during daytime, the incorporation of RC technology enables temperature decrease, subsequently boosting solar-to-electricity efficiency. Besides, integrating RC into SCs allows night cold harvesting that could be employed for daytime thermal management, further improving energy efficiency. Therefore, integrating RC with SCs represents a promising, energy-free way towards enhanced energy efficiency. This review commences with the energy balance within SCs and fundamental principles of RC technologies, summarizes remarkable daytime RC materials for temperature reduction and efficiency improvement of SCs, continues with innovative PV systems that integrate nighttime RC technologies, and finally ends with challenges and perspectives towards enhanced energy efficiency in PV systems via passive RC technologies.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"57 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-21DOI: 10.1016/j.nanoen.2025.110682
Fengyi Yang, Pengye Zhang, Jiafu Qu, Yahui Cai, Xiaogang Yang, Chang Ming Li, Jundie Hu
Enzymes, as natural catalysts, demonstrate high substrate specificity and catalytic efficiency, making them vital in energy storage, environmental remediation, and health. Consequently, researchers are increasingly focused on developing multifunctional platform that replicate the microenvironments of biological systems. Covalent organic frameworks (COFs)-immobilized enzymes offer a robust platform for catalytic applications due to their well-designed porous structures, molecular editing capabilities, coordinated environments, and excellent biocompatibility. This review offers a comprehensive overview of the robust engineered catalytic platform provided by COFs-immobilized enzymes for diverse catalytic applications. It discusses the advantages of COFs-encapsulated enzyme materials, various strategies for constructing COFs-embedded platforms, methods for functionalized enzyme encapsulation, and strategies for enhancing enzyme activity. Furthermore, it explores recent developments of these materials in diverse catalytic applications, including CO2 conversion, H2 production, biocatalysis, tumor therapy, environmental remediation, and organic synthesis reaction. Finally, it highlights the prospects and challenges of COFs-immobilized enzymes for reference.
{"title":"Covalent organic framework-immobilized enzymes: A robust engineered catalytic platform for diverse applications","authors":"Fengyi Yang, Pengye Zhang, Jiafu Qu, Yahui Cai, Xiaogang Yang, Chang Ming Li, Jundie Hu","doi":"10.1016/j.nanoen.2025.110682","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110682","url":null,"abstract":"Enzymes, as natural catalysts, demonstrate high substrate specificity and catalytic efficiency, making them vital in energy storage, environmental remediation, and health. Consequently, researchers are increasingly focused on developing multifunctional platform that replicate the microenvironments of biological systems. Covalent organic frameworks (COFs)-immobilized enzymes offer a robust platform for catalytic applications due to their well-designed porous structures, molecular editing capabilities, coordinated environments, and excellent biocompatibility. This review offers a comprehensive overview of the robust engineered catalytic platform provided by COFs-immobilized enzymes for diverse catalytic applications. It discusses the advantages of COFs-encapsulated enzyme materials, various strategies for constructing COFs-embedded platforms, methods for functionalized enzyme encapsulation, and strategies for enhancing enzyme activity. Furthermore, it explores recent developments of these materials in diverse catalytic applications, including CO<sub>2</sub> conversion, H<sub>2</sub> production, biocatalysis, tumor therapy, environmental remediation, and organic synthesis reaction. Finally, it highlights the prospects and challenges of COFs-immobilized enzymes for reference.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"84 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-21DOI: 10.1016/j.nanoen.2025.110698
Kun Wang, Mengna Wang, Bai Sun, Chuan Yang, Zelin Cao, Teng Wu, Kaikai Gao, Hui Ma, Wentao Yan, Haoyuan Wang, Longhui Fu, Xiangming Li, Jinyou Shao
As a device with tunable resistance states, the memristor has demonstrated significant potential in emulating the plasticity of biosynapses. In recent years, the application of memristors in biomimetic sensory systems has gained widespread attention. This work reviews the research progress of memristors in simulating human senses, particularly in systems involving vision, touch, smell, and hearing. Memristors can not only simulate the perception, storage, and processing of various sensory signals, but also it can integrate with neuromorphic computing and self-learning algorithms to construct multimodal sensory systems. These systems, by integrating information from different sensory channels, can perceive the external environment more intelligently and have wide application prospects in many fields, such as robotics, smart healthcare, neural prosthetics, and augmented reality. Although current research on memristor-based sensory systems faces challenges such as manufacturing variability, randomness in conduction mechanisms, and power consumption during high-frequency operation, continuous developments in materials, structural design, and algorithm optimization are expected to lead to breakthroughs in the future. This work will facilitate the transition of memristor-based sensory systems from laboratory research to real-world applications, driving innovation and progress in biomimetic sensory systems and neuromorphic computing.
{"title":"An innovative biomimetic technology: Memristors mimic human sensation","authors":"Kun Wang, Mengna Wang, Bai Sun, Chuan Yang, Zelin Cao, Teng Wu, Kaikai Gao, Hui Ma, Wentao Yan, Haoyuan Wang, Longhui Fu, Xiangming Li, Jinyou Shao","doi":"10.1016/j.nanoen.2025.110698","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.110698","url":null,"abstract":"As a device with tunable resistance states, the memristor has demonstrated significant potential in emulating the plasticity of biosynapses. In recent years, the application of memristors in biomimetic sensory systems has gained widespread attention. This work reviews the research progress of memristors in simulating human senses, particularly in systems involving vision, touch, smell, and hearing. Memristors can not only simulate the perception, storage, and processing of various sensory signals, but also it can integrate with neuromorphic computing and self-learning algorithms to construct multimodal sensory systems. These systems, by integrating information from different sensory channels, can perceive the external environment more intelligently and have wide application prospects in many fields, such as robotics, smart healthcare, neural prosthetics, and augmented reality. Although current research on memristor-based sensory systems faces challenges such as manufacturing variability, randomness in conduction mechanisms, and power consumption during high-frequency operation, continuous developments in materials, structural design, and algorithm optimization are expected to lead to breakthroughs in the future. This work will facilitate the transition of memristor-based sensory systems from laboratory research to real-world applications, driving innovation and progress in biomimetic sensory systems and neuromorphic computing.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"57 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142990759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：