Nano EnergyPub Date : 2025-09-04DOI: 10.1016/j.nanoen.2025.111442
Yuhao Chen , Shiheng Tian , Jiagui Li , Yaju Zhang , Wenbo Peng , Zhongkun Wang , Gang Cheng , Yuanzheng Zhang , Guozhen Shen , Haiwu Zheng
{"title":"Performance enhancement of NbOI2-based field-effect transistor by piezotronic effect for object recognition","authors":"Yuhao Chen , Shiheng Tian , Jiagui Li , Yaju Zhang , Wenbo Peng , Zhongkun Wang , Gang Cheng , Yuanzheng Zhang , Guozhen Shen , Haiwu Zheng","doi":"10.1016/j.nanoen.2025.111442","DOIUrl":"10.1016/j.nanoen.2025.111442","url":null,"abstract":"<div><div>Two-dimensional field-effect transistors (2D FETs) have attracted significant interest in logic gate circuits, non-volatile memory, and sensors, owing to their superior gate control capability. However, high contact resistance (<em>R</em><sub>c</sub>) and limited effective carrier mobility (<em>μ</em><sub>eff</sub>) caused by the Schottky barrier impede the development of high-performance 2D FETs. Herein, the as-synthesized 2D NbOI₂ with a high piezoelectric coefficient was transferred onto flexible SiO₂/Si substrates to fabricate flexible NbOI₂ FET whose on/off ratio can reach 10<sup>4</sup>. Owing to piezotronic effect, the Schottky barriers at the FET metal-semiconductor interface are modulated by strain-induced piezoelectric polarization charges, which improve its electrical characteristics. Under a tensile strain of 3.32 ‰, the <em>μ</em><sub>eff</sub> and <em>R</em><sub>c</sub> of the NbOI₂ FET are increased by 56 % and decreased by 72.3 %, respectively, while the on-state current (<em>I</em><sub>on</sub>) has increased by 77.2 %. Notably, the <em>I</em><sub>on</sub> exhibits a good linear correlation with tensile strain, indicating its potential application in piezotronic sensors. Therefore, a strain sensing array consisting of four FETs responds to different objects by generating four-channel electrical output signals, achieving 99.9 % accuracy in object recognition with the aid of deep learning. This study proposes a novel strategy for designing high-performance 2D FET and highly integrated intelligent sensing systems.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"145 ","pages":"Article 111442"},"PeriodicalIF":17.1,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144983276","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}
Nano EnergyPub Date : 2025-09-03DOI: 10.1016/j.nanoen.2025.111441
Jinbo Chen , Kaixin Huang , Wenyuan Peng , Junjie Tang , Yuxin Dai , Ziyi Li , Luyao Hao , Xianyong Zhou , Bin-Bin Yu , Ruoyao Xu , Hua Dong , Xingzhu Wang , Chang Liu
{"title":"π-π stacking arrangement of naphthoic acid enhanced bulk passivation for efficient perovskite solar cells","authors":"Jinbo Chen , Kaixin Huang , Wenyuan Peng , Junjie Tang , Yuxin Dai , Ziyi Li , Luyao Hao , Xianyong Zhou , Bin-Bin Yu , Ruoyao Xu , Hua Dong , Xingzhu Wang , Chang Liu","doi":"10.1016/j.nanoen.2025.111441","DOIUrl":"10.1016/j.nanoen.2025.111441","url":null,"abstract":"<div><div>Lewis base molecules have been extensively employed for defect passivation in perovskite solar cells (PSCs) due to their ability to effectively coordinate with undercoordinated lead ions and enhance device performance. However, current research predominantly focuses on the influence of molecular configurations, while largely neglecting the critical role of molecular arrangements in determining passivation efficiency. In this work, to systematically investigate the defect passivation mechanism governed by molecular arrangements of Lewis base molecules, we designed three carboxylic acid (-COOH) functionalized ligands featuring non-conjugated (cyclohexanecarboxylic acid) and conjugated (1-naphthoic acid and 2-naphthoic acid) structures as passivating agents. Compared to the non-conjugated ligand, the conjugated naphthalene core establishes conjugation interactions with the perovskite surface, inducing a preferential lying-down orientation. More importantly, the intermolecular π-π stacking of conjugated functional groups extends π-electron delocalization, thereby providing sufficient electron density to fill defect states. As designed, the conjugated ligands demonstrate superior capability in passivating undercoordinated Pb<sup>2 +</sup> ion defects and immobilizing iodide anions. This π-π stacking strategy significantly enhances the power conversion efficiency of PSCs from 24.07 % to 25.76 %, offering an effective molecular design approach for optimizing the performance of PSCs through rational control of Lewis base stacking arrangements.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"145 ","pages":"Article 111441"},"PeriodicalIF":17.1,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144931205","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}
Nano EnergyPub Date : 2025-09-02DOI: 10.1016/j.nanoen.2025.111434
Hyunji Lee , Jimin Kim , Eunsol Ok, Seunghyun Kim, Kilwon Cho
{"title":"Photoactivated-doping-induced structural ordering in conjugated polymers via solution-mixing for high-performance organic thermoelectrics","authors":"Hyunji Lee , Jimin Kim , Eunsol Ok, Seunghyun Kim, Kilwon Cho","doi":"10.1016/j.nanoen.2025.111434","DOIUrl":"10.1016/j.nanoen.2025.111434","url":null,"abstract":"<div><div>Molecular doping is a fundamental strategy for modulating carrier density in conjugated polymers and has been widely explored in organic thermoelectrics (TEs). However, excessive dopants can disrupt the structural order of polymer films and hinder charge transport. Among various doping methods, mixed-solution doping offers advantages in scalable processing and formation of thick and uniform films. Nevertheless, it often increases disorder through aggregation caused by charge transfer complexes formed in solution. Recently, doping-induced ordering has emerged as a promising way to simultaneously enhance carrier density and mobility, but has primarily been observed in sequential doping where solid-state order is well-preserved. Here, we present a photoactivated doping strategy that enables doping-induced ordering in mixed-solution systems. Triphenylsulfonium hexafluoroantimonate (TPS-HA), a photoactivated dopant, suppresses the charge transfer reaction in solution and initiates doping upon light irradiation in the solid state. This temporal control effectively decouples film formation from doping. Before activation, TPS-HA is preferentially located in amorphous regions of poly(3-hexylthiophene-2,5-diyl) (P3HT) films with minimal disruption of crystalline domains. After activation, the small SbF<sub>6</sub>⁻ anions insert into lamellar regions, thereby promoting side-chain ordering, backbone planarity, and reducing cumulative disorder. Consequently, TPS-HA-doped P3HT exhibits an enhanced molecular ordering across all three structural regions with delocalized carriers, achieving a conductivity of 78 S cm<sup>−1</sup>—the highest reported for P3HT using mixed-solution doping—and a power factor of 51 μW m<sup>−1</sup> K<sup>−2</sup>. By harnessing photoactivated doping to induce structural ordering, this strategy offers a framework to advance organic TEs.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"145 ","pages":"Article 111434"},"PeriodicalIF":17.1,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144931236","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}
Nano EnergyPub Date : 2025-09-02DOI: 10.1016/j.nanoen.2025.111433
Lei Fan , Yafeng Chen , Jie Zhu , Zhongqing Su
{"title":"Multiband large-area ultrasonic energy conveying and harvesting via a phononic topological heterostructure","authors":"Lei Fan , Yafeng Chen , Jie Zhu , Zhongqing Su","doi":"10.1016/j.nanoen.2025.111433","DOIUrl":"10.1016/j.nanoen.2025.111433","url":null,"abstract":"<div><div>Phononic topological insulators supporting robust mechanical wave localization hold great promise in ultrasonic energy conveying and harvesting (UECH) applications. However, prevailing topological devices for UECH suffer from typical bottlenecks, e.g.<em>,</em> low energy capacity and singular operating frequency band, severely restricting the UECH performance in real-world application scenarios. To address these challenges, we herein develop a phononic topological heterostructure (PTH), which hosts large-area topological waveguide states within three frequency windows, for multiband and high-throughput ultrasonic energy transport. By integrating the PTH with piezoelectric transducers, the ultrasonic energies conveyed by the PTH are further converted into electric signals for energy harvesting applications. Our work suggests a promising way for multiband and high-throughput UECH, having the potential in improving communication capacities of micro-electromechanical systems and developing high-performance self-powered micro devices.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"145 ","pages":"Article 111433"},"PeriodicalIF":17.1,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144928580","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}
Nano EnergyPub Date : 2025-09-02DOI: 10.1016/j.nanoen.2025.111432
Yaqi Zhang , Tianlong Wang , Yurong Chen , Qingyu Zhu , Longxiang Yao , Hao Yu , Yuan Gao , Feng Chen , Shengcai Qi , Wentao Cao
{"title":"Biodegradable piezoelectric nanofibers with MXene-enhanced self-polarization for ultrasound-accelerated bone regeneration","authors":"Yaqi Zhang , Tianlong Wang , Yurong Chen , Qingyu Zhu , Longxiang Yao , Hao Yu , Yuan Gao , Feng Chen , Shengcai Qi , Wentao Cao","doi":"10.1016/j.nanoen.2025.111432","DOIUrl":"10.1016/j.nanoen.2025.111432","url":null,"abstract":"<div><div>Piezoelectric biomaterials have emerged as revolutionary candidates for bone regeneration through mechano-electronic modulation of cellular osteogenesis, yet resolving the fundamental trilemma among biodegradation, piezoelectric amplification, and spatiotemporal bioactivity programming has remained elusive. Here, we present a biodegradable piezoelectric heterostructure platform synergizing hydroxyl-engineered Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> (h-Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>) MXenes with poly(L-lactic acid) (PLLA) with the assistance of molecular dynamics simulations, which revealed atomic-scale hydrogen bonding networks enabling simultaneous polarization enhancement and degradation rate modulation. The electrospun PLLA/h-Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> nanofibers (Ph-TM NFs) demonstrate remarkable piezoelectric performance (<em>d</em><sub>33</sub> coefficient: ∼19 pC/N) and ultrasound-responsive voltage generation (500 mV peak-to-peak) while maintaining excellent biodegradation. Notably, the piezoelectric Ph-TM NFs orchestrate a calcium-mitochondria-ferroptosis axis through ultrasound-activated voltage-gated calcium channels, boosting ATP production and down-regulating ferroptosis markers to accelerate mineralized matrix deposition. <em>In vivo</em> assessments in rat critical-size skull defects also showed that US-activated Ph-TM NFs accelerated defect closure and promoted higher neovascularization. This work establishes a paradigm for intelligent biomaterial design through computational simulation-guided interfacial engineering, opening avenues for self-powered regenerative therapies.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"145 ","pages":"Article 111432"},"PeriodicalIF":17.1,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144931235","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}
Nano EnergyPub Date : 2025-09-01DOI: 10.1016/j.nanoen.2025.111431
Jingning Zhang , Yijie Fan , Yijun Wang , Xiangxiang Wang , Zhengkai Wang , Huanzheng Liu , Cong Liu , Zhong Lin Wang , Dan Luo
{"title":"Contact-electro-catalysis therapy combats tumors by activating the immune system and blocking extracellular vesicles-mediated metastasis","authors":"Jingning Zhang , Yijie Fan , Yijun Wang , Xiangxiang Wang , Zhengkai Wang , Huanzheng Liu , Cong Liu , Zhong Lin Wang , Dan Luo","doi":"10.1016/j.nanoen.2025.111431","DOIUrl":"10.1016/j.nanoen.2025.111431","url":null,"abstract":"<div><div>The immune silence of cold tumors and the high metastatic potential of malignant cells are two major challenges in contemporary cancer therapy, which collectively undermine the efficacy of immunotherapy and conventional treatment modalities. Overcoming these barriers by transforming “cold” tumors into “hot” tumors while simultaneously suppressing metastasis remains a critical unmet need. Here, we reported a drug-free catalytic therapeutic strategy based on contact-electro-catalysis (CEC). By exploiting interfacial electron transfer between biocompatible silica (SiO<sub>2</sub>) and water under ultrasound (US) stimulation, this approach efficiently generated reactive oxygen species (ROS) within the tumor microenvironment (TME). The locally generated ROS induced oxidative stress-mediated tumor cell death, reprogramed the immunosuppressive microenvironment, enhanced T cell infiltration and effector differentiation, and ultimately induced a robust adaptive anti-tumor immune response. Moreover, the synergistic action of high-frequency mechanical collisions/frictions by SiO<sub>2</sub> microspheres and ROS enabled the oxidative degradation of extracellular vesicles (EVs) released by apoptotic tumor cells, thereby mitigating their pro-metastatic signaling. This study provides a multimodal non-drug anticancer therapy targeting the complex tumor environment with translational potential.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"145 ","pages":"Article 111431"},"PeriodicalIF":17.1,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144928472","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}
Nano EnergyPub Date : 2025-08-30DOI: 10.1016/j.nanoen.2025.111422
Riyamol Kallikkoden Razack, Nihal M. Poovadichalil, Kishor Kumar Sadasivuni
{"title":"Toward autonomous medicine: A comprehensive review of biomedical energy harvesting and wearable sensing systems","authors":"Riyamol Kallikkoden Razack, Nihal M. Poovadichalil, Kishor Kumar Sadasivuni","doi":"10.1016/j.nanoen.2025.111422","DOIUrl":"10.1016/j.nanoen.2025.111422","url":null,"abstract":"<div><div>The transition to a decentralized, continuous, and patient-centric healthcare model necessitates the development of energy-autonomous medical systems that can operate independently of traditional power sources. This review offers a comprehensive analysis of self-powered healthcare technologies that integrate biomedical energy harvesting (BEH) with autonomous sensing systems (ASS) to facilitate uninterrupted physiological monitoring and therapeutic interventions. Our research encompasses a diverse range of energy harvesting strategies, encompassing triboelectric, piezoelectric, thermoelectric, biochemical, and electromagnetic principles, while emphasizing the human body's function as a versatile energy storage system. Recent advancements in polymeric materials, which provide crucial properties such as flexibility, stretchability, biocompatibility, and biodegradability, making them indispensable in the design of wearable and implantable devices. From piezoelectric polymers, such as PLLA, to triboelectric materials embedded in smart textiles, polymers serve as the structural and functional backbone of next-generation energy harvesters and sensors. Their tunable mechanical and electrical properties enable seamless integration with soft tissues, allowing for the fabrication of conformable, miniaturized, and eco-friendly systems. The review also investigates strategies involving nano-structuring, microfabrication, and three-dimensional/four-dimensional printing to create miniaturized, conformable device architectures, alongside artificial intelligence (AI)/machine learning (ML)-driven simulations that enhance material selection and overall system performance. Through in-depth system-level integration, case studies, and an analysis of regulatory and translational challenges, this work presents a visionary perspective on implementing sustainable, intelligent, and fully autonomous self-powered healthcare platforms in real-world medical settings.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"145 ","pages":"Article 111422"},"PeriodicalIF":17.1,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144919043","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}
Nano EnergyPub Date : 2025-08-30DOI: 10.1016/j.nanoen.2025.111421
Yiran Luo , Kaixuan Liu , Lingxiao Gao , Xin Chen , Qibo Deng , Ning Hu , Xiaojing Mu
{"title":"A triboelectric nanogenerator based on dielectric/functional group coupling synergistic enhancement effect for head impact and sitting posture monitoring in hemiplegic patients","authors":"Yiran Luo , Kaixuan Liu , Lingxiao Gao , Xin Chen , Qibo Deng , Ning Hu , Xiaojing Mu","doi":"10.1016/j.nanoen.2025.111421","DOIUrl":"10.1016/j.nanoen.2025.111421","url":null,"abstract":"<div><div>Understanding and maintaining proper wheelchair seating posture is crucial for the rehabilitation process of patients with hemiplegia, and it is essential for achieving early recovery and enhancing quality of life. Monitoring head impacts after falls is a key step in ensuring rehabilitation safety. By detecting and addressing head injuries in a timely manner, the potential impact on the patient’s neurological function can be minimized, thereby facilitating the rehabilitation process. Herein, we present a self-powered sensing system for head impact and sitting posture. This work is based on a triboelectric nanogenerator (TENG) and aims to achieve precise real-time head impact and sitting posture recognition through an integrated deep learning algorithm. MXene@PDMS composite triboelectric material was utilized to significantly enhance the output performance of the triboelectric nanogenerator through the synergistic coupling of dielectric and functional group modifications. The output power increased from 0.38 mW to 10.86 mW, representing an improvement of nearly thirtyfold. Consequently, the TENG-based sensor converts applied forces into electrical signals with a sensitivity of 169.73 mV/kPa for pressures below 149.21 kPa and 197.04 mV/kPa within the range of 149.21–248.68 kPa, demonstrating excellent sensing capabilities. Using a deep learning-based 1D-CNN model, the recognition accuracy for head impact orientation reached 98.33 %, while that for sitting posture reached 95.33 %. This research provides a robust solution for non-invasive and long-term health monitoring, thereby advancing the development of triboelectric-based wearable electronic devices.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"145 ","pages":"Article 111421"},"PeriodicalIF":17.1,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144919044","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}
Nano EnergyPub Date : 2025-08-30DOI: 10.1016/j.nanoen.2025.111423
Mustafa Khan , Liyuan Qian , Zhiqian Lin , Yun Wang , Haibin Lin , Xiaofei Wang , Songbai Han , Jinlong Zhu
{"title":"Next-generation 2D metal-organic framework nanosheets: State-of-the-art synthesis approaches and their integral role in energy conversion and storage","authors":"Mustafa Khan , Liyuan Qian , Zhiqian Lin , Yun Wang , Haibin Lin , Xiaofei Wang , Songbai Han , Jinlong Zhu","doi":"10.1016/j.nanoen.2025.111423","DOIUrl":"10.1016/j.nanoen.2025.111423","url":null,"abstract":"<div><div>2D MOF nanosheets are emerging as next-generation materials, demonstrating significant potential in energy conversion and storage technologies. Characterized by their ultrathin morphology, extensive surface area, tunable porosity, and modular chemistry, these materials provide a unique platform for advanced energy systems. Unlike previous reviews that have treated 2D MOFs as part of a broader category of layered materials, this work focuses exclusively on 2D MOF nanosheets, combining synthesis innovations with detailed structure–function correlations that are underpinned by mechanistic studies and density functional theory (DFT) insights. We provide a comprehensive examination of advanced synthesis strategies—including top-down exfoliation (e.g., sonication, freeze–thaw, solvent-assisted) and bottom-up growth techniques (e.g., surfactant-assisted and interface-directed methods)—evaluated for their scalability, structural integrity, and reproducibility. Beyond summarizing performance data, we elucidate how two-dimensional confinement alters catalytic pathways in key electrocatalytic processes (OER, HER, ORR, CO<sub>2</sub>RR, and NRR) and storage systems, linking these effects to active-site chemistry, charge transport, and defect engineering. Their application in energy storage technologies—ranging from supercapacitors to lithium-ion and lithium–sulfur batteries—is also discussed, with emphasis on enhanced redox kinetics, ion transport, and active-site accessibility. Finally, we identify critical research gaps, including stability under industrially relevant conditions, scalable green synthesis, and standardized performance benchmarking, while outlining promising directions such as seawater electrolysis and non-noble-metal CO<sub>2</sub> conversion. By explicitly addressing these gaps, this review offers a forward-looking roadmap for translating 2D MOF nanosheets from laboratory curiosity to scalable technologies in sustainable energy systems.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"145 ","pages":"Article 111423"},"PeriodicalIF":17.1,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144920923","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}
{"title":"Graphene-like porous carbon-titanium nitride composite as an efficient separator modifier for lithium-sulfur batteries","authors":"Fail Sultanov , Nazerke Zhumasheva , Akmaral Dangaliyeva , Mukhammed Kenzhebek , Yelena Shinkarova , Batukhan Tatykayev , Toreniyaz Shomenov , Almagul Mentbayeva , Zhumabay Bakenov","doi":"10.1016/j.nanoen.2025.111420","DOIUrl":"10.1016/j.nanoen.2025.111420","url":null,"abstract":"<div><div>Lithium-sulfur batteries (LSBs) are generally recognized as strong contenders in the advanced energy storage field due to their remarkable theoretical capacity and high energy density. Nevertheless, their real-world implementation is hindered by several limiting factors such as the shuttling phenomenon associated with diffusion of lithium polysulfides (LiPSs), sulfur’s inherently low electroconductivity, and large cathode volume fluctuations during charge-discharge cycles. To address these limitations, this work presents a strategy involving separator modification using a composite material that integrates both polar and non-polar characteristics. A mesoporous graphene-like porous carbon (GPC) derived from biomass was fabricated and further functionalized with titanium nitride (TiN) nanoparticles. The impact of various TiN loadings into GPC was thoroughly analyzed. LSB cells incorporating cathodes on the basis of GPC@S with a separator modified with GPC-TiN-10 demonstrated accelerated redox reaction kinetics and remarkable alleviation of the LiPSs diffusion toward the anode. The optimized cells delivered an initial discharge capacity of 1651 mAh g<sup>−1</sup> at 0.2 C, approaching the theoretical limit, and after 100 cycles, retained 880 mAh g<sup>−1</sup>. When cycled at 1 C, the cells exhibited a negligible decay in capacity of 0.059 % per cycle. Furthermore, outstanding rate capabilities were recorded with 896 mAh g<sup>−1</sup> at 1 C and 826 mAh g<sup>−1</sup> at 2 C. Density functional theory (DFT) simulations additionally justified that the observed enhancement in the characteristics originates from strong chemical affinity between LiPSs species and the TiN-modified carbon matrix, which provides more effective anchoring sites.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"145 ","pages":"Article 111420"},"PeriodicalIF":17.1,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144919104","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}