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Algae-Derived Precursors for Sustainable Electrochemical Energy Storage 藻类衍生的可持续电化学储能前体
IF 3.6 4区 工程技术
Energy technology Pub Date : 2024-11-17 DOI: 10.1002/ente.202401465
Manas Dongre, Payal Varma, Aravindhalochanan Parthasarathy, Balasubramanian Kandasubramanian
{"title":"Algae-Derived Precursors for Sustainable Electrochemical Energy Storage","authors":"Manas Dongre,&nbsp;Payal Varma,&nbsp;Aravindhalochanan Parthasarathy,&nbsp;Balasubramanian Kandasubramanian","doi":"10.1002/ente.202401465","DOIUrl":"https://doi.org/10.1002/ente.202401465","url":null,"abstract":"<p>The simple production and harvesting of algae, along with its lower environmental impact and fewer geopolitical issues, make it a viable precursor for electrochemical energy storage devices. Algae represent a promising biomaterial for electrode materials in electrochemical energy storage devices, including hard carbon, sol–gel-based anode batteries, sodium batteries, oxygen reduction reaction catalysts in zinc–air batteries, and cathode materials in zinc-ion and lithium-ion batteries. Algae-based batteries are fabricated using methods like pyrolysis, hydrothermal processes, agar-aided dissolution, electrolysis, annealing, and sol–gel methods. Among these, the sol–gel method using agar to construct refillable hydrogel batteries stands out. Agar's compatibility with acetylene black enhances electrochemical properties and offers the advantage of refill ability, which is challenging in metal-ion batteries. Algae carbons have demonstrated enhanced specific capacity and cyclic performance, paving the way for their use in both medical and industrial applications. The article reviews the utilization of algae-based batteries in different industrial and medical pacemaker applications as well as examines the feasibility of the operation of algae-based batteries synthesized through various parameters and precursors.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565344","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}
引用次数: 0
Enhancing Supercapacitor Performance of NiCoMn-Layered Double Hydroxide with Ag–Citrate/Polyaniline Nanocomposites 用硝酸银/聚苯胺纳米复合材料提高镍钴锰层状双氢氧化物的超级电容器性能
IF 3.6 4区 工程技术
Energy technology Pub Date : 2024-11-17 DOI: 10.1002/ente.202401730
Ammar Makda, Mohsin Ali Marwat, Muhammad Hamza Mahmood, Abdullah Naeem, Syed Muhammad Abdullah, Muhammad Humayun, Muhammad Ramzan Abdul Karim, Mohamed Bououdina, Muhammad Zubair Khan, Muhammad Bilal Hanif
{"title":"Enhancing Supercapacitor Performance of NiCoMn-Layered Double Hydroxide with Ag–Citrate/Polyaniline Nanocomposites","authors":"Ammar Makda,&nbsp;Mohsin Ali Marwat,&nbsp;Muhammad Hamza Mahmood,&nbsp;Abdullah Naeem,&nbsp;Syed Muhammad Abdullah,&nbsp;Muhammad Humayun,&nbsp;Muhammad Ramzan Abdul Karim,&nbsp;Mohamed Bououdina,&nbsp;Muhammad Zubair Khan,&nbsp;Muhammad Bilal Hanif","doi":"10.1002/ente.202401730","DOIUrl":"10.1002/ente.202401730","url":null,"abstract":"<p>Layered double hydroxide (LDH) has a layered structure, which makes it a strong candidate for supercapacitors (SC) due to its high surface area. However, they suffer from low conductivity due to insufficient charge transfer across their layers. This research aims to overcome this obstacle by introducing conductive channels among the layers by the addition of Ag–citrate and polyaniline (PANI). Consequently, five electrodes (S<sub>1–5</sub>) were made from NiCoMn LDH (referred to as LDH henceforth) and 2:1 Ag–citrate and PANI composite (Ag/PANI) in different ratios and made into electrodes. Electrochemical analysis revealed successful improvement in the performance of LDH as the fraction of Ag/PANI increased until it equaled Ag/PANI  where the highest specific capacitance of 617 F g<sup>−1</sup> was obtained, which is 12% greater than the value for solely LDH electrode (550 F g<sup>−1</sup>). A device was fabricated with the best electrode (S<sub>3</sub>) and activated carbon electrode, which demonstrated energy densities and power densities of 41 WhKg<sup>−1</sup> and 412.5 W Kg<sup>−1</sup> and 14 WhKg<sup>−1</sup>and 8250 W Kg<sup>−1</sup> at 0.5 and 10 A g<sup>−1</sup> current densities, respectively. It also exhibited a capacitive retention of about 75% at 3000 galvanostatic charge–discharge cycles. These results encourage the use in of NiCoMn LDH, in a 1:1 ratio with Ag/PANI in SCs due to its remarkable performance.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 7","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142665596","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}
引用次数: 0
Fabrication of 0.6 eV Bandgap In0.69Ga0.31As Thermophotovoltaic Cells and Its System Demonstration 0.69 ga0.31 as热光伏电池0.6 eV带隙的制备及其系统论证
IF 3.6 4区 工程技术
Energy technology Pub Date : 2024-11-14 DOI: 10.1002/ente.202401480
Qiaobing Yang, Han Zhai, Hongbo Lu, Tong Zheng, Ge Li, Renbo Lei, Shuai Jiang, Ninghua Ma, Wei Zhang, Xinyi Li
{"title":"Fabrication of 0.6 eV Bandgap In0.69Ga0.31As Thermophotovoltaic Cells and Its System Demonstration","authors":"Qiaobing Yang,&nbsp;Han Zhai,&nbsp;Hongbo Lu,&nbsp;Tong Zheng,&nbsp;Ge Li,&nbsp;Renbo Lei,&nbsp;Shuai Jiang,&nbsp;Ninghua Ma,&nbsp;Wei Zhang,&nbsp;Xinyi Li","doi":"10.1002/ente.202401480","DOIUrl":"https://doi.org/10.1002/ente.202401480","url":null,"abstract":"<p>Thermophotovoltaic (TPV) is a promising energy conversion technology that can absorb the heat from a thermal radiator and transfer it into power. As the most significant energy converter, TPV cells need a narrower bandgap to realize a wider absorption spectrum range. In this work, the fabrication and characterization of single-junction In<sub>0.69</sub>Ga<sub>0.31</sub>As TPV cells with a bandgap of 0.6 eV are presented. The main structure is grown on an InP substrate through metal-organic chemical vapor deposition. Step-graded InAs<sub><i>y</i></sub>P<sub>1−<i>y</i></sub> buffer layers are used to mitigate the dislocations by relaxing the stress induced by lattice mismatch completely. Analysis of the composition, strain relaxation, layer tilt, and crystalline quality of each layer is demonstrated using triple-axis X-ray reciprocal space mapping and transmission electron microscopy. According to the tested results, each layer is found to be nearly fully relaxed and the InGaAs active layer grown on the buffer displays a high crystal quality. External quantum efficiency achieves 90% at 1100–1500 nm. Additionally, a TPV test platform is constructed to evaluate the cell performance. The maximum efficiency of the lattice-mismatched TPV cell reaches 21.92% operating at a power density of 267.4 mW cm<sup>−2</sup> and an emitter temperature of 1200 °C.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565302","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}
引用次数: 0
Controlled Synthesis of 2D Nanostructured Bimetallic Oxide (NiMoO4) on Self-Supported Nickel Foam for Boosted Electrocatalytic Seawater Oxidation Performance 基于自支撑泡沫镍的二维纳米结构双金属氧化物(NiMoO4)控制合成提高海水电催化氧化性能
IF 3.6 4区 工程技术
Energy technology Pub Date : 2024-11-14 DOI: 10.1002/ente.202400941
Gopalakrishnan Shanmugam, Harish Santhana Krishnan, Senthil Kumar Eswaran, Navaneethan Mani
{"title":"Controlled Synthesis of 2D Nanostructured Bimetallic Oxide (NiMoO4) on Self-Supported Nickel Foam for Boosted Electrocatalytic Seawater Oxidation Performance","authors":"Gopalakrishnan Shanmugam,&nbsp;Harish Santhana Krishnan,&nbsp;Senthil Kumar Eswaran,&nbsp;Navaneethan Mani","doi":"10.1002/ente.202400941","DOIUrl":"https://doi.org/10.1002/ente.202400941","url":null,"abstract":"<p>\u0000The design and development of effective electrocatalysts containing nonprecious materials for oxygen evolution reaction (OER) in seawater splitting remains a significant challenge for large-scale industrial hydrogen production. Nonprecious bimetallic oxide-constructed catalysts are utmost promising candidates to obtain boosting electrochemical water oxidation performance. Herein, a transition bimetallic oxide nanostructure electrocatalyst as NiMoO<sub>4</sub> vertically standing nanosheet over the nickel foam substrate (NiMoO<sub>4</sub>/NF) for electrochemical water oxidation process in alkaline fresh/simulated seawater conditions is presented. NiMoO<sub>4</sub> nanostructure on NF substrate is successfully obtained using a straightforward hydrothermal reaction route and thermal annealing processes. The surface morphology with elemental characteristics of the resultant NiMoO<sub>4</sub>/NF sample exposes highly homogenous vertical standing nanosheets assembled on the NF surface. The electrochemical water oxidation performance of the as-prepared electrodes demonstrates the function of diverse hydrothermal reaction times (3, 6, and 9 h) in fresh and simulated seawater electrolyte conditions. In alkaline seawater electrolyte conditions, optimal hydrothermal reaction time-assisted NiMoO<sub>4</sub>/NF-6 h electrocatalyst possesses significant OER electrocatalytic actives compared to the other samples. Similarly, NiMoO<sub>4</sub>/NF-6 h catalyst exhibits a small overpotential of 429 mV to achieve a current density of 50 mA cm<sup>−2</sup> with a Tafel slope value of 122 mV dec<sup>−1</sup> for OER process. As a result, the resultant superior electrocatalytic performance of the optimal hydrothermal reaction time-aided electrocatalyst (NiMoO<sub>4</sub>/NF-6 h) is ascribed to highly accessible catalytic active centers and enhanced charge transfer kinetics at the interface for electrochemical reactions. Thus, proposed nanostructure-constructed electrocatalysts could prove to be prospective OER candidates for electrochemical water oxidation.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565301","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}
引用次数: 0
Synergistic Passivation Strategies for Enhancing Efficiency and Stability of Perovskite Solar Cells 提高钙钛矿太阳能电池效率和稳定性的协同钝化策略
IF 3.6 4区 工程技术
Energy technology Pub Date : 2024-11-12 DOI: 10.1002/ente.202401523
Hongxin Weng, Peng Xiang, Bowen Li, Hong Zhang, Qi Luo, Chengyu Jun, Qihao Dai, Ting Xiao, Lihua Jiang, Xinyu Tan
{"title":"Synergistic Passivation Strategies for Enhancing Efficiency and Stability of Perovskite Solar Cells","authors":"Hongxin Weng,&nbsp;Peng Xiang,&nbsp;Bowen Li,&nbsp;Hong Zhang,&nbsp;Qi Luo,&nbsp;Chengyu Jun,&nbsp;Qihao Dai,&nbsp;Ting Xiao,&nbsp;Lihua Jiang,&nbsp;Xinyu Tan","doi":"10.1002/ente.202401523","DOIUrl":"https://doi.org/10.1002/ente.202401523","url":null,"abstract":"<p>Perovskite solar cells (PSCs) are celebrated for their potential in clean and renewable energy applications. However, their performance and longevity are often compromised by surface and grain boundary defects. Herein, a posttreatment strategy using 4-hydroxy-4′-biphenylcarboxylic acid ethyl ester (EHBC) is introduced to passivate these defects in perovskite films, thereby enhancing the performance of PSCs. As a Lewis base, the carbonyl group of EHBC interacts with uncoordinated lead ions to passivate lead vacancy defects, while the hydroxyl group forms hydrogen bonds with iodide ions, reducing their migration. Additionally, the hydrophobic biphenyl groups of EHBC enhance the resistance to moisture. The study demonstrates that PSCs treated with EHBC retain 69% of their initial performance after 700 h under 30% relative humidity, achieving a maximum power conversion efficiency (PCE) of 24.48%, a significant improvement over the untreated control PSCs (PCE = 23.04%). This synergistic passivation strategy offers an effective approach for fabricating high-efficiency and stable PSCs.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565362","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}
引用次数: 0
Structural Design and Optimization on Three-Row J-Type Air Cooling Channel of Pouch LiB Module 袋式锂电池模块三排 J 型空气冷却通道的结构设计与优化
IF 3.6 4区 工程技术
Energy technology Pub Date : 2024-11-08 DOI: 10.1002/ente.202401362
Libin Duan, Lingling Li, Wei Xu, Guangya Zhang, Huajin Zhou, Xing Liu, Zhanpeng Du
{"title":"Structural Design and Optimization on Three-Row J-Type Air Cooling Channel of Pouch LiB Module","authors":"Libin Duan,&nbsp;Lingling Li,&nbsp;Wei Xu,&nbsp;Guangya Zhang,&nbsp;Huajin Zhou,&nbsp;Xing Liu,&nbsp;Zhanpeng Du","doi":"10.1002/ente.202401362","DOIUrl":"https://doi.org/10.1002/ente.202401362","url":null,"abstract":"&lt;p&gt;To enhance the cooling efficiency of pouch lithium-ion battery modules, a three-row J-type air cooling channel structure is proposed, utilizing the previously developed multiple inlet/outlet air cooling frames. The influence of the location and number of inlets and outlets on heat dissipation performance is investigated through six air cooling channel schemes, providing a baseline for the multiobjective structural optimization of the proposed structure. Three important structural parameters, &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 \u0000 &lt;semantics&gt;\u0000 \u0000 &lt;mrow&gt;\u0000 \u0000 &lt;msub&gt;\u0000 \u0000 &lt;mi&gt;h&lt;/mi&gt;\u0000 \u0000 &lt;mn&gt;1&lt;/mn&gt;\u0000 &lt;/msub&gt;\u0000 &lt;/mrow&gt;\u0000 \u0000 &lt;annotation&gt;\u0000$h_{1}$\u0000&lt;/annotation&gt;\u0000 &lt;/semantics&gt;\u0000 &lt;/math&gt;, &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 \u0000 &lt;semantics&gt;\u0000 \u0000 &lt;mrow&gt;\u0000 \u0000 &lt;msub&gt;\u0000 \u0000 &lt;mi&gt;h&lt;/mi&gt;\u0000 \u0000 &lt;mn&gt;2&lt;/mn&gt;\u0000 &lt;/msub&gt;\u0000 &lt;/mrow&gt;\u0000 \u0000 &lt;annotation&gt;\u0000$h_{2}$\u0000&lt;/annotation&gt;\u0000 &lt;/semantics&gt;\u0000 &lt;/math&gt;, and &lt;i&gt;l&lt;/i&gt;, of its air convergence and divergence plenums are selected as the design variables to improve the airflow uniformity in branch channels and minimize the pressure drop between inlets and outlets. The final design exhibits superior heat dissipation performance compared to baseline. It is noted that the airflow root mean square error in branch channels is reduced by 75.64%, while the pressure drop &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 \u0000 &lt;semantics&gt;\u0000 \u0000 &lt;mrow&gt;\u0000 \u0000 &lt;mo&gt;Δ&lt;/mo&gt;\u0000 \u0000 &lt;mi&gt;p&lt;/mi&gt;\u0000 &lt;/mrow&gt;\u0000 \u0000 &lt;annotation&gt;\u0000$Delta p$\u0000&lt;/annotation&gt;\u0000 &lt;/semantics&gt;\u0000 &lt;/math&gt; is increased by 19.74%. These are the critical factors for ensuring the heat dissipation performance of battery module. The maximum temperature &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 \u0000 &lt;semantics&gt;\u0000 \u0000 &lt;mrow&gt;\u0000 \u0000 &lt;msub&gt;\u0000 \u0000 &lt;mi&gt;T&lt;/mi&gt;\u0000 \u0000 &lt;mrow&gt;\u0000 \u0000 &lt;mtext&gt;max&lt;/mtext&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;/msub&gt;\u0000 &lt;/mrow&gt;\u0000 \u0000 &lt;annotation&gt;\u0000$T_{text{max}}$\u0000&lt;/annotation&gt;\u0000 &lt;/semantics&gt;\u0000 &lt;/math&gt; and the maximum temperature difference &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 \u0000 &lt;semantics&gt;\u0000 \u0000 &lt;mrow&gt;\u0000 \u0000 &lt;mo&gt;Δ&lt;/mo&gt;\u0000 \u0000 &lt;msub&gt;\u0000 \u0000 ","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565354","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}
引用次数: 0
Model-Based Exploration of Web Guiding Behavior for a Novel Battery Cell Stacking Process 一种新型电池堆芯工艺中基于模型的Web引导行为探索
IF 3.6 4区 工程技术
Energy technology Pub Date : 2024-11-08 DOI: 10.1002/ente.202401046
Kamal Husseini, Vishal Gupta, Sebastian Schabel, Jürgen Fleischer
{"title":"Model-Based Exploration of Web Guiding Behavior for a Novel Battery Cell Stacking Process","authors":"Kamal Husseini,&nbsp;Vishal Gupta,&nbsp;Sebastian Schabel,&nbsp;Jürgen Fleischer","doi":"10.1002/ente.202401046","DOIUrl":"https://doi.org/10.1002/ente.202401046","url":null,"abstract":"<p>Innovative production processes are required to meet the rapidly growing demand for batteries and the associated material trends. In particular, the process step of stack assembly using new machine concepts promises a high potential for optimization. However, these concepts are untested in practice. The use of digital models makes it possible to develop corresponding optimization approaches. This article presents the development of a model for the web guiding systems of electrodes and its integration into an overall machine model for a novel machine concept. Finally, optimization approaches are identified by determining appropriate controller parameters for the web guiding systems.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ente.202401046","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565353","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}
引用次数: 0
Analysis of Optical Window for Constant Cooling Heat Flux-Based Spectral Splitting in Concentrator Photovoltaic System 聚光光伏系统恒冷热通量分光光窗分析
IF 3.6 4区 工程技术
Energy technology Pub Date : 2024-11-06 DOI: 10.1002/ente.202401688
Jingyang Han, Shiqi Hou, Yixin Xiao, Shiyao Yang, Kun Li, Yong Li
{"title":"Analysis of Optical Window for Constant Cooling Heat Flux-Based Spectral Splitting in Concentrator Photovoltaic System","authors":"Jingyang Han,&nbsp;Shiqi Hou,&nbsp;Yixin Xiao,&nbsp;Shiyao Yang,&nbsp;Kun Li,&nbsp;Yong Li","doi":"10.1002/ente.202401688","DOIUrl":"https://doi.org/10.1002/ente.202401688","url":null,"abstract":"<p>The solar cells cooled to constant temperature at different concentration ratios (CR) and spectral bands (SB) require the same cooling heat flux (CHF), but the output power varies significantly. Thus, it is necessary to clarify the relationship of CHF-CR-SB to provide a reference for photovoltaic systems to select the output power generation of the spectral band under constant cooling heat flux. In this article, a selecting spectra model of a centralized photovoltaic (CPV) system is established and the selection of the spectrum based on CHF and the CR is analyzed. Theory shows that the wider the spectral division of the same CR, the larger the cooling heat flux consumed. The narrower the spectrum division, the higher the CR that the cell receiver can withstand. The experiments show that the higher the photoelectric conversion efficiency (PCE), the lower the cooling heat flux to be consumed. The cooling heat flux of 650 filter consumes 22.74% more than the UV700 filter, which means the demand for CHF is more severe when the heat spectrum distribution is wide. The spectral division should be carried out according to the requirements of high-energy flux but a small thermal energy proportion to achieve efficient PCE.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565105","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}
引用次数: 0
A Double-Arch-Structured Hybrid Triboelectric and Piezoelectric Nanogenerator Based on Polyvinylidene Fluoride/Graphene Oxide Composite Films 基于聚偏氟乙烯/氧化石墨烯复合薄膜的双拱结构摩擦电-压电复合纳米发电机
IF 3.6 4区 工程技术
Energy technology Pub Date : 2024-11-06 DOI: 10.1002/ente.202401162
Yunhao Feng, Jing Xu, Yang Dai, Xiao Cui, Xiaojiang Zhong
{"title":"A Double-Arch-Structured Hybrid Triboelectric and Piezoelectric Nanogenerator Based on Polyvinylidene Fluoride/Graphene Oxide Composite Films","authors":"Yunhao Feng,&nbsp;Jing Xu,&nbsp;Yang Dai,&nbsp;Xiao Cui,&nbsp;Xiaojiang Zhong","doi":"10.1002/ente.202401162","DOIUrl":"https://doi.org/10.1002/ente.202401162","url":null,"abstract":"<p>\u0000In this study, a methodology for fabricating double-arch triboelectric and piezoelectric composite nanogenerators using polyvinylidene fluoride (PVDF) and graphene oxide (GO) is presented. Initially, nanofiber films comprising PVDF/GO are synthesized through electrostatic spinning. Subsequently, the PVDF/GO film is integrated with cotton fibers and a copper electrode to construct the triboelectric layer. In contrast, another portion of the PVDF/GO film, alongside a copper electrode, comprises the piezoelectric layer, with the central copper electrode acting as a common electrode. Finally, a double-arch structure is established by employing polyethylene terephthalate film to facilitate synergistic operation between the triboelectric and piezoelectric layers. In the experimental results, it is indicated that the maximum open-circuit voltage and short-circuit current of the triboelectric layer of the double-arch structure are 330 V and 36 μA, respectively, representing increases of 44% and 50% compared to those of the sandwich triboelectric structure. Additionally, the maximum open-circuit voltage and short-circuit current of the piezoelectric layer are 22 V and 4 μA, respectively, reflecting enhancements of 57% and 100% over those of conventional sandwich piezoelectric structures. The output power of the double-arch composite nanogenerator is capable of lighting up 120 light-emitting diodes. Thus, this composite nanogenerator shows great potential as an environmentally friendly energy source.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 3","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565152","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}
引用次数: 0
Surface Hydroxyl-Assisted BiOBr Nanostructure Evolution for Remarkable Visible Light Photocatalytic Capability 具有显著可见光催化能力的表面羟基辅助BiOBr纳米结构演化
IF 3.6 4区 工程技术
Energy technology Pub Date : 2024-11-06 DOI: 10.1002/ente.202401350
Jiashang Chen, Qiliang Chen, Liang Bao, Huaiwei Zhang, Yong-Jun Yuan
{"title":"Surface Hydroxyl-Assisted BiOBr Nanostructure Evolution for Remarkable Visible Light Photocatalytic Capability","authors":"Jiashang Chen,&nbsp;Qiliang Chen,&nbsp;Liang Bao,&nbsp;Huaiwei Zhang,&nbsp;Yong-Jun Yuan","doi":"10.1002/ente.202401350","DOIUrl":"https://doi.org/10.1002/ente.202401350","url":null,"abstract":"<p>Herein, various BiOBr nanostructures are successfully synthesized using a facile solvothermal method. A series of structural and morphological analyses clearly indicate that due to the nucleation protection provided by KOH and the presence of surface-absorbed hydroxyl groups, BiOBr transforms from nanosheet microspheres to nanopillow aggregations (BNP) and finally to nanoneedle matrix. The open-porous nanostructure of the BiOBr nanopillows (BNPs), along with their enhanced visible light absorption capacity and the presence of surface hydroxyls, enables them to adsorb nearly 100% of organic dyes, including rhodamine B (RhB), methylene blue, and methyl red. Furthermore, the BNP exhibits remarkable visible light photocatalytic activity, degrading higher concentrations of RhB in ≈20 min.</p>","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 6","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273377","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}
引用次数: 0
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