Nano Energy最新文献_第4页

Revealing the new role of surface states in interfacial charge transfer at zinc ferrite photoanodes for efficient photoelectrochemical water splitting 揭示表面态在锌铁氧体光阳极界面电荷转移中的新作用，实现高效光电化学水分离

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-04-24 DOI: 10.1016/j.nanoen.2025.111066

Guang-Ping Yi , Hong Liu , Yi-Ping Zhao , Tiger H. Tao , Qiang Wang , Peng-Yi Tang

{"title":"Revealing the new role of surface states in interfacial charge transfer at zinc ferrite photoanodes for efficient photoelectrochemical water splitting","authors":"Guang-Ping Yi , Hong Liu , Yi-Ping Zhao , Tiger H. Tao , Qiang Wang , Peng-Yi Tang","doi":"10.1016/j.nanoen.2025.111066","DOIUrl":"10.1016/j.nanoen.2025.111066","url":null,"abstract":"<div><div>Surface states (SS) as the charge trapping sites play an extremely important role in designing high-performance photoelectrodes, which are generally thought to cause adverse surface charge recombination for zinc ferrite (ZnFe<sub>2</sub>O<sub>4</sub>, ZFO) photoanodes. However, the in-depth understanding of the relationship between SS and photoelectrochemical performance is still ambiguous. Herein, the modification of SS energy level and density at ZFO photoanodes was achieved via surface NaBH<sub>4</sub> chemical reduction and NiFeOOH co-catalysts loading. Combined with advanced spectroelectrochemical techniques, a new type of SS was discovered. Specifically, after optimizing surface structures of ZFO photoanodes via the surface modification, the SS would transform from the traditional intrinsic SS as the unfavorable recombination center to the non-intrinsic SS as the beneficial “charge storage station”, allowing for an impressively steep increase in the surface charge transfer efficiency and achieving a record high photocurrent of 1.70 mA/cm<sup>2</sup> at 1.50 V<sub>RHE</sub>. This work presents comprehensive analysis about the controversial role of ZFO photoanodes’ SS and establishes the detailed response laws between SS and PEC water splitting performance. It is expected to guide future photoelectrode design via surface modification strategies.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"140 ","pages":"Article 111066"},"PeriodicalIF":16.8,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866530","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}

引用次数: 0

Humidity-controlled in situ rapid formation of multi-gradient inorganic nanoparticle layer in ambient air stabilizes lithium metal anodes 在环境空气中控制湿度，原位快速形成多梯度无机纳米颗粒层，稳定锂金属阳极

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-04-23 DOI: 10.1016/j.nanoen.2025.111048

Sunfa Wang , Ge Zhang , Tao Zhao , Kanghou Ma , Chen Wang , Xinyue Zhao , Fangshuo Zhou , Zhiguo Liu , Xiqiang Huang , Ningning Wu , Yaohui Zhang

{"title":"Humidity-controlled in situ rapid formation of multi-gradient inorganic nanoparticle layer in ambient air stabilizes lithium metal anodes","authors":"Sunfa Wang , Ge Zhang , Tao Zhao , Kanghou Ma , Chen Wang , Xinyue Zhao , Fangshuo Zhou , Zhiguo Liu , Xiqiang Huang , Ningning Wu , Yaohui Zhang","doi":"10.1016/j.nanoen.2025.111048","DOIUrl":"10.1016/j.nanoen.2025.111048","url":null,"abstract":"<div><div>The perfect anode material for secondary batteries, lithium metal suffers from natural limits in sensitivity to the humid environment and dendrite formation. Herein, a multi-gradient lithium inorganic compounds (LICs) composite nanoparticle layer was in-situ generated on the surface of lithium after the lithium sheet was placed in an air with a humidity of 55 % for 150 s. The rapid infiltration of the electrolyte can be facilitated by the porous Li<sub>2</sub>CO<sub>3</sub> in the higher layer. The H<sub>2</sub>O molecules that are adsorbed on the surface of lithium can be limited to the LiOH∙H<sub>2</sub>O lattice by the early formed LiOH, which is influenced by hydrogen bonds. In addition to expediting the rapid desolvation of Li<sup>+</sup> through dipole interactions, the LiOH∙H<sub>2</sub>O yielded by this “molecular confined” effect also facilitates the rapid decomposition of lithium compounds on the anode side, particularly LiNO<sub>3</sub>. lithiophilic sites are more abundant in the lower stratum of Li<sub>2</sub>O. The assembled LICs@Li||Cu half-cells demonstrated exceptional performance in testing, retaining a Coulombic efficiency of ∼97 % after 350 cycles. Furthermore, full-cell configurations employing high-loading cathode materials (LICs@Li||LFP) exhibited stable cycling for over 400 cycles at a 2 C rate under 70 % humidity conditions in ambient air. A reference method for the design of chemically stable lithium anodes is provided by this rapid response lithium metal protection strategy.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"140 ","pages":"Article 111048"},"PeriodicalIF":16.8,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866531","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}

引用次数: 0

Self-powered ultraviolet photodetector enabled by a quasi-n-p-n heterostructure of SnO2 colloidal quantum dots, p-GaN, and a two-dimensional electron gas at the AlGaN/GaN interface 由SnO2胶体量子点、p-GaN和AlGaN/GaN界面上的二维电子气体的准n-p-n异质结构启用的自供电紫外光电探测器

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-04-23 DOI: 10.1016/j.nanoen.2025.111047

Sen Gao , Xian Wu , Renrong Liang , Lei Xiao , Jing Wang , Tian-ling Ren

{"title":"Self-powered ultraviolet photodetector enabled by a quasi-n-p-n heterostructure of SnO2 colloidal quantum dots, p-GaN, and a two-dimensional electron gas at the AlGaN/GaN interface","authors":"Sen Gao , Xian Wu , Renrong Liang , Lei Xiao , Jing Wang , Tian-ling Ren","doi":"10.1016/j.nanoen.2025.111047","DOIUrl":"10.1016/j.nanoen.2025.111047","url":null,"abstract":"<div><div>Ultraviolet photodetectors (UV-PDs) are essential for a wide range of applications, yet their practical use is often limited by challenges such as low responsivity, high noise, and significant dark current, particularly in self-powered configurations. In this work, we present a self-powered UV photodetector based on SnO<sub>2</sub> colloidal quantum dots (CQDs) integrated with a p-GaN/AlGaN/GaN heterostructure. The device utilizes the built-in electric field at the SnO<sub>2</sub>/p-GaN interface to achieve self-powered operation and incorporates a quasi-n-p-n heterostructure formed between the SnO<sub>2</sub> CQDs (n-type), p-GaN (p-type), and the 2DEG (n-type) at the AlGaN/GaN interface to enhance carrier separation and transport, while minimizing dark current. The device demonstrates an ultra-low dark current of 370 fA in self-powered mode. At 255 nm and 340 nm, it achieves responsivities of 90.3 mA W<sup>−1</sup> and 321.1 mA W<sup>−1</sup>, respectively, with specific detectivities of 4.32 × 10<sup>12</sup> and 1.58 × 10<sup>13</sup> Jones. The photodetector exhibits strong broadband UV sensitivity spanning from 250 nm to 370 nm and sharp selectivity, with R<sub>255</sub>/R<sub>400</sub> and R<sub>340</sub>/R<sub>400</sub> ratios exceeding 10<sup>4</sup>. This work highlights the potential of SnO<sub>2</sub>/p-GaN/AlGaN/GaN-based self-powered UV photodetectors for advanced applications in UV communication, environmental monitoring, and defense systems, offering a platform for efficient and portable photonic devices.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"140 ","pages":"Article 111047"},"PeriodicalIF":16.8,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862806","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}

引用次数: 0

A strong/weak solvents co-solvation electrolyte for fast-charging lithium metal batteries 锂金属电池快速充电用强/弱溶剂共溶剂化电解质

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-04-22 DOI: 10.1016/j.nanoen.2025.111064

Guoyu Wang , Qiang Ma , Tong Zhang , Yonghong Deng , Guangzhao Zhang

{"title":"A strong/weak solvents co-solvation electrolyte for fast-charging lithium metal batteries","authors":"Guoyu Wang , Qiang Ma , Tong Zhang , Yonghong Deng , Guangzhao Zhang","doi":"10.1016/j.nanoen.2025.111064","DOIUrl":"10.1016/j.nanoen.2025.111064","url":null,"abstract":"<div><div>Electrolyte engineering has improved the cycling life and energy density of lithium metal batteries (LMBs) by simultaneously stabilizing Li anodes and high voltage cathodes (such as LiNi<sub>0.6</sub>Co<sub>0.2</sub>Mn<sub>0.2</sub>O<sub>2</sub>, NCM622). However, these electrolytes often compromise the fast-charging performance due to relatively low Li<sup>+</sup> transport kinetics and sluggish interfacial dynamics. Herein, we introduce a strong/weak solvents co-solvation strategy designed to construct an electrolyte with anion-rich clusters and rapid Li<sup>+</sup> transport kinetics for fast-charging and energy-dense LMBs. In this approach, N,N-dimethylsulfamoyl fluoride (FSN) serves as the weak solvent, co-coordinating Li<sup>+</sup> together with the strong solvent 1,2-dimethoxyethane (DME) to form an anion-rich first solvation sheath, while the remaining DME molecules distribute externally to facilitate Li<sup>+</sup> transport. The resulting FSN-DME electrolyte exhibits an impressive ionic conductivity of 7.43 mS cm<sup>−1</sup> and an exceptional Li metal efficiency of 99.6 %. When applied in 1-Ah NCM622||Li pouch cells, the FSN-DME electrolyte enables stable operation of 300 cycles at 0.2/0.5 C and 100 cycles at 1 C charge/discharge rates under stringent conditions (cathode areal loading: 3.75 mAh cm<sup>−2</sup>, electrolyte: 3.0 g Ah<sup>−1</sup>). This breakthrough in strong/weak solvents co-solvation electrolytes, along with the development of Li<sub>2</sub>O-rich SEI interfacial layers, provides a robust foundation for designing next-generation electrolyte materials that support both fast-charging and long-life LMBs.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"140 ","pages":"Article 111064"},"PeriodicalIF":16.8,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143858179","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}

引用次数: 0

Advances of transmission electron microscopy research for lithium-ion batteries 锂离子电池的透射电镜研究进展

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-04-22 DOI: 10.1016/j.nanoen.2025.111065

Yu Shen , Jianwei Zhang , Shulin Chen , Ke Qu , Zhenzhong Yang , Yong Peng

{"title":"Advances of transmission electron microscopy research for lithium-ion batteries","authors":"Yu Shen , Jianwei Zhang , Shulin Chen , Ke Qu , Zhenzhong Yang , Yong Peng","doi":"10.1016/j.nanoen.2025.111065","DOIUrl":"10.1016/j.nanoen.2025.111065","url":null,"abstract":"<div><div>Advanced transmission electron microscopy (TEM) have emerged as powerful tools for investigating the complex electrochemical processes and failure mechanisms in lithium-ion batteries at both the nanoscale and atomic levels. Advanced static TEM methods, such as electron energy loss spectroscopy (EELS), electron holography (EH), cryo-electron microscopy (cryo-EM), differential phase contrast (DPC), and four-dimensional scanning TEM (4D STEM), have provided unprecedented insights into electrode materials, solid electrolytes, and interface structures. On this foundation, multi-field in-situ TEM techniques have been developed to dynamically study the structural and chemical evolution of battery materials during electrochemical cycling in real-time. This paper reviews both static (ex-situ) studies using high-resolution electron microscopy and the recently developed dynamic (in-situ/operando) TEM techniques for battery research. We first summarize the development of advanced TEM characterization methods and their applications in lithium-ion batteries. We then focus on key findings related to lithiation/delithiation mechanisms, interface phenomena, thermal stability, mechanical degradation of battery materials in response to electrochemical cycling, as well as the effects of applied electric, thermal, and mechanical fields in-situ. This review systematically illustrates how advanced TEM characterization techniques can bridge atomic-scale observations with macroscopic battery behavior, ultimately enhancing battery performance and safety while accelerating the design and development of next-generation batteries.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"140 ","pages":"Article 111065"},"PeriodicalIF":16.8,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143858226","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}

引用次数: 0

Deep learning-enhanced safety system for real-time in-situ blade damage monitoring in UAV using triboelectric sensor 基于深度学习的无人机叶片损伤实时监测安全系统

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-04-22 DOI: 10.1016/j.nanoen.2025.111063

Zhipeng Pan, Kuankuan Wang, Yixin Liu, Xiang Guan, Changfeng Chen, Junchi Liu, Zhihong Wang, Fei Li, Guanghui Ma, Yongming Yao, Tianyu Li

{"title":"Deep learning-enhanced safety system for real-time in-situ blade damage monitoring in UAV using triboelectric sensor","authors":"Zhipeng Pan, Kuankuan Wang, Yixin Liu, Xiang Guan, Changfeng Chen, Junchi Liu, Zhihong Wang, Fei Li, Guanghui Ma, Yongming Yao, Tianyu Li","doi":"10.1016/j.nanoen.2025.111063","DOIUrl":"10.1016/j.nanoen.2025.111063","url":null,"abstract":"<div><div>Unmanned aerial vehicles (UAVs) are being increasingly utilized in various applications, which necessitates the assessment of their safety status. While self-powered sensors utilizing triboelectric nanogenerators have advanced fault monitoring methodologies, the effective identification of damage to UAV blades remains an area that warrants further investigation. This study presents the UAV blade damage monitoring system (UBDMS), a novel system designed for the identification of UAV blade damage. The UBDMS incorporates a blade sensor mounted on the UAV motor to record rotational data, an Arduino for initial data acquisition, and a Raspberry Pi for subsequent data processing and damage evaluation. A comprehensive analysis and testing of the sensor's structure, operational principles, and electrical output characteristics were performed. The experimental findings demonstrate that the electrical signals generated by the sensor correspond to various blade damage types within the frequency domain. However, the development of a universal and precise judgment standard proves to be difficult. To overcome this challenge, deep learning technology was utilized to analyze and evaluate friction electric signals, resulting in a classification accuracy rate of 94.4 % for damage types. This research significantly enhances UAV flight safety and introduces a new methodology for the in-situ monitoring of UAV blade damage.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"140 ","pages":"Article 111063"},"PeriodicalIF":16.8,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143858152","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}

引用次数: 0

Intelligent triboelectric sliding bearing for gas leak self-sensing and mechanical fault self-diagnosis in green ammonia production 绿色合成氨生产中气体泄漏自感知与机械故障自诊断的智能摩擦滑动轴承

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-04-22 DOI: 10.1016/j.nanoen.2025.111060

Xingwei Wang , Likun Gong , Huanshuo Liu , Xiaohong Zhou

{"title":"Intelligent triboelectric sliding bearing for gas leak self-sensing and mechanical fault self-diagnosis in green ammonia production","authors":"Xingwei Wang , Likun Gong , Huanshuo Liu , Xiaohong Zhou","doi":"10.1016/j.nanoen.2025.111060","DOIUrl":"10.1016/j.nanoen.2025.111060","url":null,"abstract":"<div><div>To address carbon neutrality and peak carbon emissions, harvesting mechanical energy from bearings and converting it into electrical energy to drive ammonia leakage alarm, as well as bearings’ mechanical fault self-diagnosis, is challenging yet highly demanded in the green ammonia production industry. Herein, we demonstrated an Intelligent Triboelectric Sliding Bearing (ITSB) system, featuring a free-standing rotary barrel-shaped triboelectric nanogenerator (TENG), a gallium oxide (Ga<sub>2</sub>O<sub>3</sub>)/MXene nanocomposite-based NH<sub>3</sub> gas sensor and a self-driven data transmission unit. In addition to retaining the traditional load-bearing function, the free-standing rotary barrel-shaped TENG converted the friction from rotational motion into electrical energy, providing continuous power for sensing and data transmission. Low-cost Ga₂O₃/MXene composite was fabricated as a gas-sensitive film for NH<sub>3</sub> using a combined hydrothermal synthesis and physical composite method. The composite film-based interdigitated electrode demonstrated a highly sensitive (65.7 % @2 ppm) and fast response (5 s@2 ppm) to NH<sub>3</sub> gas with surface synergy effect performance confirmed through density functional theory calculations (DFT). Additionally, the self-driven data transmission unit were implemented to autonomously regulate and store the free-standing rotary barrel-shaped TENG output for sensing and mechanical operation monitoring. A neural network algorithm was developed to predict mechanical failures of bearings. By integrating on-site data, the accuracy reached 99 %. This integrated system paves a practical solution for gas sensing and mechanical fault diagnosis of bearings in green ammonia production for its sustainable and safe development.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"140 ","pages":"Article 111060"},"PeriodicalIF":16.8,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143858180","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}

引用次数: 0

Auxetic metastructure-assisted yarn based self-powered e-textiles for efficient energy harvesting and motion monitoring via contact-sliding-expansion strategy 利用接触-滑动-膨胀策略实现高效能量收集和运动监测的自供电电子纺织品

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-04-21 DOI: 10.1016/j.nanoen.2025.111058

Yi Zhou , Xuechuan Wang , Yifan Wang , Xiaoliang Zou , Long Xie , Yuanyuan Qiang , Wei Wang , Yitong Li , Ouyang Yue , Xinhua Liu

{"title":"Auxetic metastructure-assisted yarn based self-powered e-textiles for efficient energy harvesting and motion monitoring via contact-sliding-expansion strategy","authors":"Yi Zhou , Xuechuan Wang , Yifan Wang , Xiaoliang Zou , Long Xie , Yuanyuan Qiang , Wei Wang , Yitong Li , Ouyang Yue , Xinhua Liu","doi":"10.1016/j.nanoen.2025.111058","DOIUrl":"10.1016/j.nanoen.2025.111058","url":null,"abstract":"<div><div>Emergent triboelectric nanogenerators (TENGs) with ascendant self-powering, high sensitivity, and portability natures hold promising for advanced wearable electronics. However, wearable TENGs are still confronted with challenges regarding seamless integration with electronic textiles (e-textiles), energy harvesting efficiency, and long-term operational stability. Here, we propose an innovative contact-sliding-expansion strategy for the on-demand fabrication of auxetic metastructure-assisted yarns based self-powered e-textiles for efficient energy harvesting and motion monitoring, which exquisitely combines a helical twisting fabrication with Negative Poisson’s ratio structural design to furthest endow Auxetic-yarns with superior sensitivity and power density under various kinematic deformations. Specifically, the yarns utilize coaxial core-shell structured collagen aggregate and polyvinyl chloride conductive fibers as the positive and negative triboelectric layers, respectively, and then were subtly used as the weft for incorporating into the e-textiles through a plain weave process with a maximum output voltage of 164 V and a power density of 0.051 W·m⁻<sup>2</sup>. Furthermore, the e-textiles were harmoniously integrated into smart clothing and demonstrated exceptional sensitivity (2.35 V·kPa⁻¹ ) in detecting movements at body joints. Through real-time signal transmission and processing, the e-textiles accurately achieved posture recognition, fall detection, and multitudinous health monitoring, providing potential for practical application in wearable devices, healthcare, and intelligent control systems.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"140 ","pages":"Article 111058"},"PeriodicalIF":16.8,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143858186","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}

引用次数: 0

Highly efficient pure red light-emitting diodes enabled by multifunctional ligand-coordinated CsPbI3 quantum dots 多功能配体配位 CsPbI3 量子点实现高效纯红色发光二极管

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-04-21 DOI: 10.1016/j.nanoen.2025.111055

Jing Li , Xiaofeng Hu , Yifeng Feng , Xiuyuan Chen , Jiajie Ye , Xinyang Wang , Chenchen Yang , Dingshuo Zhang , Qiuting Cai , Haiping He , Zhizhen Ye , Qingquan He , Xingliang Dai , Jun Pan

{"title":"Highly efficient pure red light-emitting diodes enabled by multifunctional ligand-coordinated CsPbI3 quantum dots","authors":"Jing Li , Xiaofeng Hu , Yifeng Feng , Xiuyuan Chen , Jiajie Ye , Xinyang Wang , Chenchen Yang , Dingshuo Zhang , Qiuting Cai , Haiping He , Zhizhen Ye , Qingquan He , Xingliang Dai , Jun Pan","doi":"10.1016/j.nanoen.2025.111055","DOIUrl":"10.1016/j.nanoen.2025.111055","url":null,"abstract":"<div><div>Efficient perovskite light-emitting diodes (PeLEDs) that emit at wavelengths between 620 and 650 nm are key to the next generation of ultrahigh-definition displays. Quantum-confined CsPbI<sub>3</sub> quantum dots (QDs) can overcome the intrinsically narrow bandgap, thus meeting the requirements of pure red emitters. However, the inherent instability and poor carrier transport properties of CsPbI<sub>3</sub> QDs hinder their device performance. Herein, we introduce thiophene-2-sulfonamide (2-ThSA), a short-chain multifunctional ligand, to passivate surface defects and enhance carrier transport in CsPbI<sub>3</sub> QDs. The 2-ThSA treated QDs exhibited a near 100 % photoluminescence quantum yield (PLQY), observably improved stability, and enhanced carrier transport properties due to the strong interactions between the CsPbI<sub>3</sub> QDs and multiple functional groups of 2-ThSA. PeLEDs based on these modified QDs demonstrated superior spectral stability, reached a remarkable external quantum efficiency (EQE) of 28.73 %, and displayed low efficiency roll-off. Additionally, large-area devices (64 mm<sup>2</sup>) showed an EQE exceeding 20 %, highlighting the potential of our approach for high-performance, large-scale displays.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"140 ","pages":"Article 111055"},"PeriodicalIF":16.8,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143853119","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}

引用次数: 0

Efficient solar-driven photothermoelectric generator facilitated by carbon dots aggregates 由碳点聚集体促成的高效太阳能驱动光热电发电机

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-04-21 DOI: 10.1016/j.nanoen.2025.111053

Feishi Shan , Li Yan , Zhihong Wei , Chengshuang Liao , Jing Li , Zhouyu Wang , Yuxi Tian , Leyong Wang

{"title":"Efficient solar-driven photothermoelectric generator facilitated by carbon dots aggregates","authors":"Feishi Shan , Li Yan , Zhihong Wei , Chengshuang Liao , Jing Li , Zhouyu Wang , Yuxi Tian , Leyong Wang","doi":"10.1016/j.nanoen.2025.111053","DOIUrl":"10.1016/j.nanoen.2025.111053","url":null,"abstract":"<div><div>The energy crisis is a significant issue that the world is facing in the 21st century. Thermoelectric energy transfer emerges as a promising solution that can convert heat energy into electric energy. However, there remains a big challenge that the efficient utilization of light energy to achieve continuous electricity ultimately. The red emitting carbon dots (<strong>RCDs</strong>) could self-assemble into the aggregates (<strong>ARCDs</strong>) via cooperative solvophobic effect combined with hydrogen bonding interaction, which exhibits considerably enhanced absorption with excellent photothermal conversion effect (PCE ≈ 62%) compared to its dispersed state. Moreover, these aggregates were then loaded onto semiconductors to create solar-driven photothermoelectric generator (<strong>LHE</strong>), with unprecedented output efficiency (V<sub>output</sub> ≈ 5000 mV, I<sub>output</sub> ≈ 25 mA, and P<sub>output</sub> ≈ 123 mW), which can easily charge smartphones outdoors. This work offers a supramolecular chemistry perspective for the construction of CDs aggregates and presents an sustainable approach towards achieving continuous photothermoelectric energy transfer.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"140 ","pages":"Article 111053"},"PeriodicalIF":16.8,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143858188","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}

引用次数: 0