Nano Energy最新文献

Modulation of elastic perovskites for flexible photovoltaics 柔性光伏电池中弹性钙钛矿的调制

IF 17.6 1区材料科学

Nano Energy Pub Date : 2025-06-20 DOI: 10.1016/j.nanoen.2025.111267

Junlin Wen, Tai Li, Zhiyi Du, Xi Wang, Yue Yang, Meiru Duan, Jinxian Yang, Hui Zhang, Yonghua Chen

{"title":"Modulation of elastic perovskites for flexible photovoltaics","authors":"Junlin Wen, Tai Li, Zhiyi Du, Xi Wang, Yue Yang, Meiru Duan, Jinxian Yang, Hui Zhang, Yonghua Chen","doi":"10.1016/j.nanoen.2025.111267","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.111267","url":null,"abstract":"The soft crystal structure of perovskite semiconductors enabled the construction of flexible perovskite solar cells (f-PSCs), which manifested promising power conversion efficiency (PCE) but fall short of mechanical durability. Herein, the recent progress and versatile application scenario of f-PSCs were summarized to disclose the practical requirements and fracture mechanics of perovskite thin films under applied external load. As it was unveiled that the mechanical failure of f-PSCs was generally initiated from the fragile perovskites because of their relatively low cohesive energy and fracture toughness, which can be modulated by finely adjusting their crystal quality or facilitating energy dissipation away from the perovskites. Accordingly, the intrinsic correlation between the chemical composition, lattice strain, grain size and layer thickness, grain boundaries and crystal orientation of the perovskite with its mechanical properties was established to guide the optimization of crystal quality with improved elasticity. Moreover, the external load on the perovskite can be effectively relaxed by incorporating self-healing materials, which are temporarily ascribed and then recovered under certain stimulus to impede crack formation and propagation. In the end, recent strategies to prolong the mechanical lifespan of the perovskite materials were systematically reviewed from which perspectives for further development of mechanically durable f-PSCs are provided.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"26 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335062","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

Boosting Piezoelectric Catalytic Ammonia Synthesis: A Synergistic Approach with Sulfur Vacancy Engineered CdS Pyramid-Surface Nanospheres 促进压电催化合成氨：硫空位工程CdS金字塔表面纳米球的协同方法

IF 17.6 1区材料科学

Nano Energy Pub Date : 2025-06-20 DOI: 10.1016/j.nanoen.2025.111270

Fang-Rong Hsu, Yu-Ching Chen, Cheng-Hsi Yeh, Hsun-Yen Lin, Hsin-Yi Tiffany Chen, Jyh Ming Wu

{"title":"Boosting Piezoelectric Catalytic Ammonia Synthesis: A Synergistic Approach with Sulfur Vacancy Engineered CdS Pyramid-Surface Nanospheres","authors":"Fang-Rong Hsu, Yu-Ching Chen, Cheng-Hsi Yeh, Hsun-Yen Lin, Hsin-Yi Tiffany Chen, Jyh Ming Wu","doi":"10.1016/j.nanoen.2025.111270","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.111270","url":null,"abstract":"The nitrogen reduction reaction (NRR) is essential for sustainable ammonia synthesis but suffers from low selectivity and sluggish kinetics due to hydrogen evolution. Piezocatalysis offers a promising alternative by leveraging strain-induced polarization to enhance reaction specificity and efficiency. We develop a sulfur vacancy-engineered cadmium sulfide (CdS) piezoelectric catalytic system to optimize nitrogen activation. Sulfur vacancies improve nitrogen adsorption, enhance charge separation, and lower the hydrogenation energy barrier, overcoming limitations of traditional electrocatalysts. Through a systematic investigation of charge separation mechanisms, combining theoretical calculations and experimental validation, we demonstrate the crucial role of sulfur vacancies and surface morphology in optimizing catalytic performance. Finite element method (FEM) simulations reveal that the pyramid-like CdS surface generates a strong piezopotential under mechanical stress, enhancing charge transfer and redox reactions. Density functional theory (DFT) calculations show sulfur vacancies increase electron availability near the Fermi level, facilitating dinitrogen activation and stabilizing intermediates. Therefore, the optimized CdS catalyst achieves an ammonia production rate of 1702 µg g<sup>-1</sup> h<sup>-1</sup>—four times higher than pristine CdS—demonstrating the effectiveness of defect engineering in piezoelectric catalysis. This study highlights the synergy between piezoelectric activation and defect engineering, offering insights into charge separation and advancing piezoelectric catalysis for sustainable ammonia synthesis.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"1 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335068","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

Operando SAXS/WAXS Unveils Solvated Structure Dynamics in PVDF-co-HFP Solid-State Electrolytes Operando SAXS/WAXS揭示PVDF-co-HFP固态电解质的溶剂化结构动力学

IF 17.6 1区材料科学

Nano Energy Pub Date : 2025-06-19 DOI: 10.1016/j.nanoen.2025.111268

Zhaoxin Song, Haiting Shi, Feng Tian, Junhao Wang, Yaohui Liang, Luoxing Xiang, Xiuhong Li, Zhiwei Xu

{"title":"Operando SAXS/WAXS Unveils Solvated Structure Dynamics in PVDF-co-HFP Solid-State Electrolytes","authors":"Zhaoxin Song, Haiting Shi, Feng Tian, Junhao Wang, Yaohui Liang, Luoxing Xiang, Xiuhong Li, Zhiwei Xu","doi":"10.1016/j.nanoen.2025.111268","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.111268","url":null,"abstract":"Solvation effectively enhances the Li<sup>+</sup> transport and optimizes the mechanical properties of solid-state polymer electrolytes (SPE). However, operando characterization of the solvation formation process and the dynamic evolution of solvated structure during Li<sup>+</sup> transport remains very challenging. Here, we developed an operando X-ray scattering device for the first time to reveal the effect of Li<sup>+</sup> migration on the solvated structure during charging and discharging processes. The observed variations in operando small-angle X-ray scattering (SAXS) curves reveal that the conversion of AGG to n-AGG and contact ion pairs (CIP) with Li<sup>+</sup> increases or decreases. n-AGG is formed by multiple AGG attractively bound together. The obstruction of Li<sup>+</sup> transport pathways due to the degradation of chain segments, results in capacity decay. Operando grazing incidence wide-angle X-ray scattering (GIWAXS) shows that the crystalline regions of PVDF-<em>co</em>-HFP are gradually eroded during dimethyl sulfoxide (DMSO) evaporation, leading to a significant decrease in mid-term crystallinity. Due to the precise control of the process, PVDF-<em>co</em>-HFP SPE achieves a high conductivity of 2.08 × 10<sup>−4</sup> S cm<sup>−1</sup> and a Li<sup>+</sup> transference number of 0.58. The insights gained from this work provide opportunities for more precise control of SPE processing and optimizing Li<sup>+</sup> transport channels to improve capacity decay.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"38 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144319560","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

Tailoring Graphite Interfacial Chemistry with Medium Concentration Weakly Solvating Electrolyte toward Fast-charging and Low-temperature Lithium-ion Batteries 中浓度弱溶剂化电解质对快充低温锂离子电池石墨界面化学的影响

IF 17.6 1区材料科学

Nano Energy Pub Date : 2025-06-18 DOI: 10.1016/j.nanoen.2025.111266

Hu Lin, Fangyan Liu, Endian Yang, Xiaoyu Shi, Anping Zhang, Zhihong Bi, Hanqing Liu, Yingpeng Xie, Zhong-Shuai Wu

{"title":"Tailoring Graphite Interfacial Chemistry with Medium Concentration Weakly Solvating Electrolyte toward Fast-charging and Low-temperature Lithium-ion Batteries","authors":"Hu Lin, Fangyan Liu, Endian Yang, Xiaoyu Shi, Anping Zhang, Zhihong Bi, Hanqing Liu, Yingpeng Xie, Zhong-Shuai Wu","doi":"10.1016/j.nanoen.2025.111266","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.111266","url":null,"abstract":"Fast-charging, long-life and low-temperature lithium-ion batteries are crucial for practical applications. However, the graphite anode faces challenges due to limited rate capability and poor low-temperature tolerance. To address these issues, we propose a medium concentration weakly solvating electrolyte (MCWSE) to regulate the interfacial chemistry of graphite. Benefiting from weak Li<sup>+</sup>-solvent interactions and anion-dominated solvation structure, an inorganic-rich, thin and homogenous solid electrolyte interphase (SEI) with fast Li<sup>+</sup> transport kinetics is formed on the surface of graphite, enabling rapid Li⁺ desolvation at the graphite-electrolyte interface. Consequently, graphite anode achieves excellent rate capability (310 mAh g<sup>-1</sup> at 3 C, 113 mAh g<sup>-1</sup> at 10 C), superior long-cycle stability with 92% capacity retention after 1000 cycles at 3 C and remarkable low-temperature electrochemical capability (300 mAh g<sup>-1</sup> at −20 °C). The graphite||LiFePO<sub>4</sub> cell also offers 108 mAh g<sup>-1</sup> at −20 °C and 54 mAh g<sup>-1</sup> at −40 °C. Interfacial dynamics analysis confirms that Li<sup>+</sup> transport through the SEI is the rate-controlling step for graphite to operate stably at room temperature, while Li<sup>+</sup> desolvation and transport through SEI are key factors for graphite anode to operate at low temperatures. Our work provides novel insights into regulating the interfacial chemistry of graphite for high-performance batteries.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"19 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144319574","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

Fish Schooling Effect Triboelectric Nanogenerators Array 摩擦电纳米发电机阵列

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-06-18 DOI: 10.1016/j.nanoen.2025.111263

Sheng Zhang , Zhaojuan Shi , Xiuci Yuan , Yifan Qiu , Changguo Xue , Yabo Zhu , Cheng Xu

{"title":"Fish Schooling Effect Triboelectric Nanogenerators Array","authors":"Sheng Zhang , Zhaojuan Shi , Xiuci Yuan , Yifan Qiu , Changguo Xue , Yabo Zhu , Cheng Xu","doi":"10.1016/j.nanoen.2025.111263","DOIUrl":"10.1016/j.nanoen.2025.111263","url":null,"abstract":"<div><div>Triboelectric nanogenerators (TENGs) based on vortex-induced vibration has great potential in harvesting low-velocity fluid energy. However, the mutual interference between bluff bodies can weaken the conversion of fluid energy into electrical energy. Herein, based on the energy transfer mechanism in fish schooling movement, the fish schooling effect (FSE) TENGs array (FSE-TENGs) is proposed for harvesting fluid kinetic energy. Specifically, the bluff bodies array with double-fin structure is designed in fish schooling diamond arrangement. Meanwhile, the balls-TENG is placed inside each bluff body to form FSE-TENGs. The results show that there is mutual interference between bluff bodies. Interestingly, the bluff bodies array designed by imitating the FSE can effectively alleviate this mutual interference phenomenon. And the downstream bluff body can effectively capture the energy in the wake of the upstream bluff body. Based on this energy transfer mechanism, the TENG located upstream can significantly increase the electrical energy output of the downstream TENGs. At flow velocity of 2.28m/s, FSE-TENGs can generate output power of 0.2mW/m<sup>3</sup>. In the demonstration, it can effectively harvest the airflow energy and convert it into electrical energy for early warning, and provide multiple times and stable power supplies for thermohygrometers.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"142 ","pages":"Article 111263"},"PeriodicalIF":16.8,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144311946","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

Corrigendum to “Consecutive covalent bonds reconstruct robust dual-interfaces by carbonized binder to enable conductive-additive-free durable silicon anode” Nano Energy, Volume 130 (2024)/110108 “连续共价键重建坚固的双界面通过碳化粘合剂，以实现无导电添加剂的耐用硅阳极”纳米能源，卷130(2024)/110108的勘误表

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-06-18 DOI: 10.1016/j.nanoen.2025.111264

Yuanyuan Yu , Chen Yang , Yan Jiang , Jiadeng Zhu , Junhua Zhang , Mengjin Jiang

引用次数: 0

Kinetics compensation mechanism in nitrogen-sulfur co-doping carbon nano-onions for dual-carbon potassium-ion hybrid capacitors 氮硫共掺杂碳纳米洋葱对双碳钾离子杂化电容器的动力学补偿机制

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-06-18 DOI: 10.1016/j.nanoen.2025.111265

Zitong Zhu , Lu Wei , Yu Chen , Tianyu Wang , Zeqian Liu , Te-Huan Liu , Xin Guo

{"title":"Kinetics compensation mechanism in nitrogen-sulfur co-doping carbon nano-onions for dual-carbon potassium-ion hybrid capacitors","authors":"Zitong Zhu , Lu Wei , Yu Chen , Tianyu Wang , Zeqian Liu , Te-Huan Liu , Xin Guo","doi":"10.1016/j.nanoen.2025.111265","DOIUrl":"10.1016/j.nanoen.2025.111265","url":null,"abstract":"<div><div>Dual-carbon potassium-ion hybrid capacitors (PIHCs) offer the potential to deliver cost-effectiveness, extended cycle durability, high energy and power densities. Nevertheless, their widespread implementations are significantly restricted by the sluggish kinetics of conventional carbon-based anodes. Herein, nitrogen-sulfur co-doped carbon nano-onions (NS-CNOs) are introduced as advanced anode materials for dual-carbon PIHCs. The unique architecture of NS-CNOs characterized by concentric graphitic layers with moderate specific surface area and suitable interlayer spacing, not only effectively mitigates the stress variations induced by repeated K<sup>+</sup> insertion/extraction but also enhances K<sup>+</sup> storage capability. The synergies of N, S co-doping expand the interlayer spacing of graphene, introduce abundant potassiophilic sites/defects, and establish efficient ion/electron transport pathways. Through a combination of in/ex-situ experimental characterizations and theoretical simulations, it is demonstrated that K<sup>+</sup> ions are preferentially adsorbed at the N-sites during potassiation process, and S atoms provide additional defects for K<sup>+</sup> extraction. These advantages contribute to excellent rate performance (100 mAh g<sup>−1</sup> at 20 A g<sup>−1</sup>) and good cycling stability for NS-CNOs. When integrated into dual-carbon PIHCs, the device enables high energy and power densities (174.4 Wh kg<sup>−1</sup> and 14.0 kW kg<sup>−1</sup>) while maintaining long-term cycling stability (86.7 % capacity retention after 10,000 cycles). This work explores a potential design strategy of anode materials for high-performance dual-carbon PIHCs.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"142 ","pages":"Article 111265"},"PeriodicalIF":16.8,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144319559","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 directional dust removal via wind-driven phase-controlled TENG for solar panel maintenance 基于风力相控TENG的太阳能板自供电定向除尘

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-06-17 DOI: 10.1016/j.nanoen.2025.111262

Cheoljae Lee , Junyeong Yang , Soo-Kwan Kim , Yugyung Jin , Hyosik Park , Sujeong Gwak , Gerald Selasie Gbadam , Jimin Yeon , Yeonkyeong Ryu , Jongsung Lee , Seongho Son , Jeongnam Cheon , Jongmin Choi , Wanchul Seung , Ju-Hyuck Lee

{"title":"Self-powered directional dust removal via wind-driven phase-controlled TENG for solar panel maintenance","authors":"Cheoljae Lee , Junyeong Yang , Soo-Kwan Kim , Yugyung Jin , Hyosik Park , Sujeong Gwak , Gerald Selasie Gbadam , Jimin Yeon , Yeonkyeong Ryu , Jongsung Lee , Seongho Son , Jeongnam Cheon , Jongmin Choi , Wanchul Seung , Ju-Hyuck Lee","doi":"10.1016/j.nanoen.2025.111262","DOIUrl":"10.1016/j.nanoen.2025.111262","url":null,"abstract":"<div><div>Efficient solar energy production is significantly hindered by dust accumulation, which severely reduces the performance of solar panels. To overcome this issue, we developed a phase-controlled, wind-driven 3-phase rotational triboelectric nanogenerator (RTENG) integrated with an electrodynamic screen (EDS) for self-powered, unidirectional dust removal. The RTENG generates high-voltage alternating current (AC) without the need for external power sources and uses a precisely phase-controlled 3-phase electrode configuration to produce a traveling electric field that drives dust particles in a single direction. This configuration enhances dust removal efficiency, particularly at low panel inclination angles. The phase-controlled 3-phase RTENG-EDS system achieved dust removal efficiencies of up to 83.48 % based on weight and 62.38 % based on surface coverage, outperforming conventional 1-phase systems by factors of 1.6 and 1.13, respectively. Furthermore, the system maintained high performance across various wind speeds and panel inclination angles. These results underscore the effectiveness of phase-controlled 3-phase RTENG technology in advancing self-powered solar panel cleaning systems and enhancing the overall efficiency of solar energy harvesting.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"142 ","pages":"Article 111262"},"PeriodicalIF":16.8,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144311947","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

Reset-dominant accurate synaptic weight mapping in passive memristor arrays for energy-efficient spiking neural networks 高能效尖峰神经网络无源记忆电阻阵列中复位优势精确突触权映射

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-06-16 DOI: 10.1016/j.nanoen.2025.111261

Yongjin Byun , Gimun Kim , Sungjoon Kim , Sungjun Kim

{"title":"Reset-dominant accurate synaptic weight mapping in passive memristor arrays for energy-efficient spiking neural networks","authors":"Yongjin Byun , Gimun Kim , Sungjoon Kim , Sungjun Kim","doi":"10.1016/j.nanoen.2025.111261","DOIUrl":"10.1016/j.nanoen.2025.111261","url":null,"abstract":"<div><div>This study presents a novel reset-dominant synaptic weight programming strategy for passive memristor crossbar arrays, enabling high-precision neuromorphic computing without external current compliance circuitry. We introduce a naturally formed Overshoot Suppression Layer (OSL) within a Pt/Al/TiO<sub>x</sub>/Al₂O₃/Pt device stack, which intrinsically limits overshoot current during the set process and allows for stable analog switching. Combined with a half-bias programming scheme, this structure significantly suppresses cell-to-cell interference, a critical challenge in high-density memristor arrays. To further enhance weight accuracy, we propose the Initial-Low Resistance State (LRS) scheme, a reset-dominant programming method that minimizes abrupt conductance variation induced by set pulses. Using an incremental step pulse with verification algorithm (ISPVA), we successfully programmed 20 discrete conductance levels with a mean vector-matrix multiplication (VMM) error of 419.8 nA. Notably, 99 % of the weights fell within a 1.5 µA error margin, demonstrating the high precision of our approach. System-level validation was conducted through hardware-based inference using a spiking neural network (SNN) trained on the MNIST dataset, achieving a classification accuracy of 88.85 %, only 1.7 % below the ideal software baseline. This work highlights a scalable and CMOS-compatible solution for achieving accurate, energy-efficient VMM in passive memristor arrays, offering strong potential for next-generation neuromorphic hardware.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"142 ","pages":"Article 111261"},"PeriodicalIF":16.8,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144305231","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

Ultra-rapid hydrogen evolution reaction kinetics over CeO2@PtCu coaxial nanocables 超快速析氢反应动力学CeO2@PtCu同轴纳米电缆

IF 16.8 1区材料科学

Nano Energy Pub Date : 2025-06-16 DOI: 10.1016/j.nanoen.2025.111254

Feng Xu , Qiaona Yang , Zhen Xu , Huafeng Le , Tianhua Zhou , Yifeng Wang , Shichun Mu

{"title":"Ultra-rapid hydrogen evolution reaction kinetics over CeO2@PtCu coaxial nanocables","authors":"Feng Xu , Qiaona Yang , Zhen Xu , Huafeng Le , Tianhua Zhou , Yifeng Wang , Shichun Mu","doi":"10.1016/j.nanoen.2025.111254","DOIUrl":"10.1016/j.nanoen.2025.111254","url":null,"abstract":"<div><div>Pt-based catalysts with robust performance towards hydrogen evolution reaction in acidic media are urgently needed. The thin-layer structure can expose most active sites on surface and tune electronic structures of Pt-based catalysts. However, establishing the Pt thin-layer on support is challenging due to poor lattice compatibility and step-edge barriers to interlayer transport, which often results in roughening or sintering. Herein, we first coat Cu on CeO<sub>2</sub> nanowire using sol-gel method and then construct a PtCu thin-layer by a “glue” effect, achieving a coaxial nanocable structure CeO<sub>2</sub> NW@PtCu catalyst. Benefiting from the PtCu thin-layer structure and large metal-support interface, the electron density at Fermi level increases, and the charge transfer is facilitated, leading to a stronger metal-support interaction and a lower energy barrier for adsorption/desorption of H*. As expected, the catalyst exhibits an overpotential as low as 7 mV at a current density of 10 mA cm<sup>−2</sup>, and a mass activity of 2.9 A mg<sup>−1</sup><sub>Pt</sub>, which is 72.5 times that of commercial Pt/C. Even after 2000 CV cycles, the structure and activity remain unchanged. This work demonstrates a promising strategy for improving the utilization efficiency and stability of Pt in HER and other catalytic reactions.</div></div>","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"142 ","pages":"Article 111254"},"PeriodicalIF":16.8,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144305230","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