Energy technology最新文献

{"title":"A Multi-Degree-of-Freedom Piezoelectric Kinetic Energy Harvester for Self-Powered Wireless Sensors in Electric Buses","authors":"Duxing Fan,&nbsp;Zhen Zhao,&nbsp;Baifu Zhang,&nbsp;Haichuan Cui,&nbsp;Xiaohui Zhang,&nbsp;Deshuo Wan","doi":"10.1002/ente.202402440","DOIUrl":"https://doi.org/10.1002/ente.202402440","url":null,"abstract":"<p>Harvesting energy from the surrounding environment represents a viable method for developing self-powered systems and realizing that vehicles' low-power sensors are self-powered. Nevertheless, existing energy harvesting devices exhibit limitations in their capacity to capture kinetic energy across a broad spectrum of motion. To overcome this limitation, a multi-degree-of-freedom piezoelectric energy harvester has been developed, comprising three modules: motion conversion, energy transformation, and power storage. The motion conversion module utilizes a connecting rod and sliding bearing mechanism to transform complex three-dimensional motions of swing body into simplified two-dimensional movements of sliding mass. The energy transformation module utilizes piezoelectric elements to convert mechanical energy into electrical energy, which is then rectified and stored in capacitors by the power storage module. Experimental results demonstrate the system's capability to generate a maximum average output power of 758 μW. Capacitor charging tests show that 100, 330, and 470 μF capacitors can be charged to 1 V in 20, 32, and 50 s, respectively. Real-world vehicle tests confirm the practical applicability of this harvester, providing valuable insights for developing self-powered wireless sensor systems.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Moisture-Resistant Thermoplastic Polyurethane Encapsulation for Flexible Perovskite Solar Cells","authors":"Yuqing Yue,&nbsp;Yang Zhang,&nbsp;Yifan Zheng,&nbsp;Yuchuan Shao,&nbsp;Bin Wei,&nbsp;Wei Shi","doi":"10.1002/ente.202402310","DOIUrl":"https://doi.org/10.1002/ente.202402310","url":null,"abstract":"<p>With increasing global energy demand and environmental challenges, advancing efficient and stable renewable energy technologies is critical. Flexible perovskite solar cells (FPSCs) have emerged as a prominent research focus due to their exceptional power conversion efficiency (PCE) and cost effectiveness. However, the susceptibility of perovskite materials to moisture and oxygen hinders their commercial viability. This study proposes a novel encapsulation technique using transparent thermoplastic polyurethane (TPU) with low moisture permeability to enhance the stability and durability of FPSC. First, it is demonstrated that the TPU encapsulation process is compatible with the perovskite solar cells (PSC) module and lossless encapsulation can be achieved without degradation in efficiency. Second, through micromorphological characterization analysis, it is confirmed that TPU encapsulation can effectively prevent water–oxygen ingress, retard the decomposition of perovskite materials, and improve the stability of the film. The experimental results demonstrate that TPU-encapsulated PSCs retain 95% of their original PCE after 1000 h at 25 °C and 50% relative humidity (RH) and sustain 80% of the original efficiency after 200 h of underwater immersion. Finally, it is demonstrated that the TPU encapsulation has a significant advantage in terms of manufacture cost, which positively contributes to the commercialization of PSC.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic Effects in Earth-Abundant Bimetallic Aerogels for Enhanced Oxygen Evolution Reaction","authors":"Wei Wei,&nbsp;Ruomei Yin,&nbsp;Houxu Mei,&nbsp;Jialu Lu,&nbsp;Junjie Gao,&nbsp;Hui Li,&nbsp;Kun Qian,&nbsp;Xiaodong Wu","doi":"10.1002/ente.202401555","DOIUrl":"https://doi.org/10.1002/ente.202401555","url":null,"abstract":"<p>\u0000Inexpensive and efficient earth-abundant metal catalysts are required for electrocatalytic water splitting to meet future energy conversion and storage demand, but its practical production is limited by uncertain factors such as slow oxygen evolution reaction (OER) kinetics, low electrical conductivity, and unclear catalytic mechanism. A facile one-step reduction and in situ gelation reaction is proposed to synthesize a series of earth-abundant nickel-based bimetallic aerogels (Ni_<i>x</i>Fe_<i>y</i>, Ni_<i>x</i>Co_<i>y</i>, and Ni_<i>x</i>Cu_<i>y</i>) by utilizing the synergistic effect between bimetals and a surface electronic structure adjustment strategy to realize the OER performance improvement. Meanwhile, density functional theory calculations show that the introduction of transition metal Fe into Ni aerogels can cause the center of Fe <i>d</i>-band to shift down, induce strong electronic effects on the Ni surface, and regulate the adsorption of OER reaction intermediates (*OH, *O, and *OOH), enhancing the aerogel conductivity, thereby achieving higher intrinsic OER activity of the Ni₄₅Fe₅₅ aerogel catalyst. This work sheds light on the design of high-performance earth-abundant bimetallic aerogels electrocatalysts.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 6","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Silicon Nanoparticles Encapsulated within Multifunctional Double Carbon Matrices as Anodes for High-Performance Lithium-Ion Batteries","authors":"Peiyuan Hou,&nbsp;Xiang Yao,&nbsp;Hualing Tian,&nbsp;Yanjun Cai,&nbsp;Yuxiang Liu,&nbsp;Zhi Su","doi":"10.1002/ente.202402157","DOIUrl":"https://doi.org/10.1002/ente.202402157","url":null,"abstract":"<p>Significant volume expansion and limited electrical conductivity pose substantial challenges to the practical application of silicon (Si). Herein, silicon nanoparticles are incorporated into a dual-carbon matrix co-doped with nitrogen and sulfur (N/S co-doped Si/G/C) using a method that combines ball milling and carbonization. The Si nanoparticles are uniformly distributed between graphite layers and encapsulated by an amorphous carbon layer co-doped with N/S generated from the pyrolysis of pitch and thiourea. This N/S co-doped three-dimensional dual-carbon structure not only effectively mitigates the volume expansion of silicon but also significantly enhances the material's ionic and electronic conductivity. Even at a current density of 1 A g⁻¹, the capacity remains at 625.87 mAh g⁻¹ after 500 cycles, demonstrating exceptional cycling stability. When assembled into a full battery with LiFePO₄, the battery retains a capacity of 158.9 mAh g⁻¹ after 200 cycles, corresponding to a retention of 95.6%. In addition, the method is simple to operate, highly adaptable and versatile in function, and does not involve any toxic or harmful chemical substances, providing a new idea for the industrial production of silicon–carbon anode materials.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 9","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interfacial Engineering and Defect Passivation for Highly Efficient Carbon-Based Perovskite Solar Cells","authors":"Limei Wu,&nbsp;Mingming Zhao,&nbsp;Bao Zhang,&nbsp;Ke-jian Jiang,&nbsp;Wei-Min Gu,&nbsp;Dongzhi Liu,&nbsp;Xueqin Zhou","doi":"10.1002/ente.202500305","DOIUrl":"https://doi.org/10.1002/ente.202500305","url":null,"abstract":"<p>The interface regulation between SnO₂ and perovskite is a critical and challenging issue for highly efficient and stable perovskite solar cells (PSCs). Herein, guanidinium sulfate (GA₂SO₄) is introduced as an interface layer between SnO₂ and perovskite, where the ammonium cation in GA₂SO₄ can provide more hydrogen bonds for strong coordination with surrounding halides, especially uncoordinated I⁻, while the sulfate ions (SO₄²⁻) are strongly coordinated to Sn⁴⁺ and uncoordinated Pb²⁺, passivating the defects from both the SnO₂ and perovskite layers. With the GA₂SO₄-modification, hole-selective layer -free carbon-electrode-based PSCs (C-PSCs) are fabricated and exhibited a higher power conversion efficiency of 17.91%, followed by enhanced environmental stability.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 9","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Development and Experimental Analysis of Freestanding Single-Walled Carbon Nanotube/Sulfur Composite Cathode for the Next Generation of Sulfur-Based Batteries","authors":"Maryam Sadat Kiai,&nbsp;Navid Aslfattahi,&nbsp;Deniz Karatas,&nbsp;Nilgun Baydogan,&nbsp;Lingenthiran Samylingam,&nbsp;Kumaran Kadirgama,&nbsp;Chee Kuang Kok","doi":"10.1002/ente.202500134","DOIUrl":"https://doi.org/10.1002/ente.202500134","url":null,"abstract":"<p>\u0000This work uses a solution-based and scalable method to provide a freestanding single-walled carbon nanotube (SWCNT)/S cathode in both Li<span></span>S and Na<span></span>S batteries. SWCNTs with high conductivity and surface area can enhance the cathode flexibility. The incorporation of oxygen and sulfur bonds can enhance active redox sites for chemical adsorption. Sulfur and oxygen effectively hinder the shuttle effect by improving chemical interactions between the polysulfides and the nonpolar carbon framework, leading to improved cyclability of Na<span></span>S and Li<span></span>S cells. The cycling stability plots of Na<span></span>S and Li<span></span>S batteries with freestanding SWCNT/S as a cathode are investigated for 150 cycles at a high current density of 1000 mA g⁻¹. Both cells display a stable capacity behavior during cycling. The discharge capacity of the Li<span></span>S cell with the SWCNT/S cathode is retained at 978.2 mAh g⁻¹ while the Na<span></span>S cell only shows the capacity retention of 769.4 mAh g⁻¹ after 150 cycles. Coulombic efficiencies of ≈94% and 90% are observed for Li<span></span>S and Na<span></span>S cells respectively. Therefore, the SWCNT/S cathode in both Li<span></span>S and Na<span></span>S batteries hinders the polysulfide shuttle, providing high electrolyte diffusion, resulting in improved active material reutilization and minimized capacity fading. Freestanding SWCNT/S cathode can enhance cycling stability over long-term cycling and is proved to be a promising cathode in both Li<span></span>S and Na<span></span>S batteries.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 9","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sodium-Ion-Conducting Alginate-Based Electrolyte Material for Energy Storage Applications","authors":"Shashikant Yadav,&nbsp;Dipendra Kumar Verma,&nbsp;Rudramani Tiwari,&nbsp;Devendra Kumar,&nbsp;Km Parwati,&nbsp;Rajshree Rai,&nbsp;Pubali Adhikary,&nbsp;Subramanian Krishnamoorthi","doi":"10.1002/ente.202401912","DOIUrl":"https://doi.org/10.1002/ente.202401912","url":null,"abstract":"<p>\u0000A green pseudosolid polymer electrolyte is prepared using sodium alginate and sodium polyphosphate via a sustainable solution-cast method with water as the medium. The amorphous anionic polymer backbone enables easy cationic movement, enhancing ionic conductivity. This water-in-salt electrolyte exhibits an electrochemical stability window of 3.2 V and a cationic transport number of 0.90%. Thermal analysis confirms stability up to 150 °C, making it suitable for high-temperature applications. X-ray diffraction analysis verifies its amorphous nature, facilitating smooth ion transport, while scanning electron microscopy reveals a smooth morphology with well-defined pores, improving electrode interface stability. At room temperature, the electrolyte displays electrical conductivity around 10⁻⁵ S cm⁻¹, increasing to 10⁻⁴ S cm⁻¹ above 40 °C. The drift ionic velocity is ≈10⁻⁵m s⁻¹, with ionic mobility of 10⁻⁷ mV s⁻¹. Cage-type hopping dominates ionic movement, requiring a low activation energy of 0.158 eV. Incorporating an ionic liquid as a plasticizer further enhances conductivity to 10⁻³S cm⁻¹. Additionally, the material exhibits dielectric relaxation due to polar group orientation. Its high capacitance with minimal electrode contribution makes it a promising candidate for energy storage applications, offering excellent electrochemical and thermal stability, along with superior electrode–electrolyte interface properties.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 9","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermodynamics and Exergy Analysis on the Oxyfuel Combustion Integrated with Supercritical CO2 Power Cycle System","authors":"Shilong Wang,&nbsp;Hao Qiu,&nbsp;Gang Zhou,&nbsp;Jinliang Xu,&nbsp;Yueming Yang,&nbsp;Mingchao Li,&nbsp;Kan Qin,&nbsp;Kuihua Han,&nbsp;Yingjie Li,&nbsp;Cheng Xu,&nbsp;Jianli Zhao,&nbsp;Jianhui Qi","doi":"10.1002/ente.202401943","DOIUrl":"https://doi.org/10.1002/ente.202401943","url":null,"abstract":"<p>In the context of global energy transition and environmental sustainability, the clean combustion of traditional energy sources has become increasingly important. The oxyfuel combustion integrated with the supercritical CO₂ (sCO₂) cycle system presents a viable solution. In this work, developed a modular system is developed for oxyfuel combustion integrated with the sCO₂ cycle and simulated using Python alongside Aspen Plus. The results show that the boiler eficiency <i>η</i>_b, sCO₂ cycle efficiency <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mi>η</mi>\u0000 <mrow>\u0000 <msub>\u0000 <mrow>\u0000 <mtext>sCO</mtext>\u0000 </mrow>\u0000 <mn>2</mn>\u0000 </msub>\u0000 </mrow>\u0000 </msub>\u0000 </mrow>\u0000 <annotation>$bar{1}$</annotation>\u0000 </semantics></math>, and electrical efficiency <i>η</i>_e of the system are 93.08, 48.4, and 35.9%, respectively. The power consumption of air separation unit and compression purification unit accounts for 25.8% of the total power. The exergy analysis results show that the boiler has the highest exergy loss, which is 70.2%, followed by the high-temperature recuperator. Afterward, the system is connected to renewable energy sources and carried out retrofit. The analysis shows that the power generation efficiency increases by 8.5% and the exergy efficiency increases by 5%. Additionally, the system can absorb electricity generated by 434 MW of renewable energy for energy storage. These results indicate that the system has promising application prospects in areas with ample sunlight, as well as in regions experiencing drought and water scarcity.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 9","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CoNiSe2 Nanoparticles Embedded in Pod-Like N-Doped Carbon Nanofibers for High-Performance Sodium-Ion Batteries","authors":"Yu Wang,&nbsp;Yang Du,&nbsp;Zi Wen,&nbsp;Chun Cheng Yang,&nbsp;Qing Jiang","doi":"10.1002/ente.202402067","DOIUrl":"https://doi.org/10.1002/ente.202402067","url":null,"abstract":"<p>\u0000Sluggish kinetics and severe volume expansion critically limit the electrochemical performance of sodium-ion batteries (SIBs). Herein, a novel material combining CoNiSe₂ nanoparticles with pod-like N-doped carbon nanofibers (CoNiSe₂/PCNFs) is designed and fabricated. The bimetallic selenide of CoNiSe₂ combines the redox characteristics of Co and Ni, which offers more redox active sites for Na⁺ adsorption. The nanocubes show large surface areas, which contribute to faster Na⁺ diffusion kinetics. Unique pod-like N-doped carbon nanofibers not only serve as reinforcing frameworks to inhibit volume change but also improve the conductivity of CoNiSe₂/PCNFs. Herein, the CoNiSe₂/PCNFs electrode achieves a high capacity of 395.8 mAh g⁻¹ at a current density of 0.1 A g⁻¹ after 100 cycles and exhibits excellent cycling stability for 1000 cycles at a current density of 1.0 A g⁻¹ with a capacity of 284.3 mAh g⁻¹. The novel structure and high electrochemical properties of CoNiSe₂/PCNFs shed new light on developing high-performance bimetallic selenides as SIB anodes.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 9","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and Unveiling Properties of Nanocomposite NiO/Mn2O3 and Ni–Mn-Based Layered Double Hydroxide as Efficient Supercapacitor Electrodes","authors":"Mohanasundari Marimuthu,&nbsp;Elango Muniappan,&nbsp;Mobika Jayaraj,&nbsp;Arjun Kumar Bojarajan,&nbsp;Adel El-marghany,&nbsp;Prabha Duraisamy,&nbsp;Sambasivam Sangaraju","doi":"10.1002/ente.202402451","DOIUrl":"https://doi.org/10.1002/ente.202402451","url":null,"abstract":"<p>The unique morphology achieved through the co-precipitation method represents a rare and notable accomplishment in the current research landscape. In this work, an exclusive sphere-like morphology of NiO/Mn₂O₃ and layered Ni–Mn–LDH (layered double hydroxide) is synthesized successfully by the conventional coprecipitation method. NiO/Mn₂O₃ and Ni–Mn–LDH are coated on stainless-steel substrates and demonstrate remarkable charge–discharge performance with significantly enhanced specific capacitance. The measured specific capacitance and retention of NiO/Mn₂O₃ is 956 F g⁻¹ and 98.4% beyond 5000 repetitions under 3 A g⁻¹. Sphere morphology enhances the charge/discharge rates through ion diffusion and reduction in diffusion distance. Such morphology supports the long-term stability of the electrode. The nickel–manganese-based LDH electrode exhibits the measured specific capacitance and retention of 905 F g⁻¹ under 1 A g⁻¹ and 94.8% at 5000 cycles at 3 A g⁻¹, respectively. Furthermore, an asymmetric supercapacitor (SC) device, fabricated using NiO/Mn₂O₃, achieves an impressive specific capacitance of 171 F g⁻¹ at 1 A g⁻¹ and exhibits a capacitance retention of 95.83% for 10 000 cycles. Due to this excellent supercapacitive performance, these materials are highly promising candidates for next-generation energy storage applications. The remarkable retention of capacitance over prolonged cycling underscores their durability, paving the way for their potential use in commercial SC devices.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 9","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ente.202402451","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}