Energy technology最新文献_第7页

Construction of Hollow Cobalt Phosphide Heterostructure for High-Performance Lithium-Ion Batteries 高性能锂离子电池用空心磷化钴异质结构的构建

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-08-31 DOI: 10.1002/ente.70631

Zhuo Li, Hanjiang Zhou, Qingling Meng, Liang Tian, Ying Ma, Peng Liu, Jie Li, Mingfu Yu, Ning Tang, Wenbin Liu, Xianwei Hu

{"title":"Construction of Hollow Cobalt Phosphide Heterostructure for High-Performance Lithium-Ion Batteries","authors":"Zhuo Li, Hanjiang Zhou, Qingling Meng, Liang Tian, Ying Ma, Peng Liu, Jie Li, Mingfu Yu, Ning Tang, Wenbin Liu, Xianwei Hu","doi":"10.1002/ente.70631","DOIUrl":"https://doi.org/10.1002/ente.70631","url":null,"abstract":"Transition metal phosphides (TMPs) have been considered as the prospective anode materials for lithium-ion batteries (LIBs) due to their prominent theoretical capacity. However, their unsatisfactory kinetic performance and ineluctable volume expansion result in rapid capacity decay and the collapse of material structure during cycles, which restrict their commercial application. Herein, a hollow cobalt phosphide with nitrogen-doped carbon nanotube-entangled heterostructure(H-CoP@NCNTs) is constructed using ZIF-67 as a sacrificial host and serves as an anode for LIBs. The elastic hollow carbon framework as a covering layer for CoP-based active material can regulate the volume change during cycles. And the multidimensional conductive network with nitrogen-doped carbon nanotubes wrapped can improve the electron/ion transport. The H-CoP@NCNTs anode presents a considerable reversible capacity of 754.8 mAh g−1 at 0.1 A g−1 and a long-cycle stability (418.6 mAh g−1 after 1000 cycles at 2 A g−1). This work provides an efficient approach for designing and exploiting advancing TMP-based anodes.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 9","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943681","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

Effect of Preparation Method on the Structure of NiCe Catalysts and CO2 Methanation Performance 制备方法对NiCe催化剂结构及CO2甲烷化性能的影响

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-08-30 DOI: 10.1002/ente.70632

Guanyu Tang, Weiwei Huang, Tingting Wang, Shuangxi Lin, Zhenhua Li

{"title":"Effect of Preparation Method on the Structure of NiCe Catalysts and CO2 Methanation Performance","authors":"Guanyu Tang, Weiwei Huang, Tingting Wang, Shuangxi Lin, Zhenhua Li","doi":"10.1002/ente.70632","DOIUrl":"https://doi.org/10.1002/ente.70632","url":null,"abstract":"CO2 methanation not only reduces CO2 emissions but also enables the efficient utilization of carbon resources. The development of highly efficient and stable catalysts is crucial for the application of this reaction. CeO2 supported Ni catalyst (NiCe) showed high potential for CO2 methanation. In this paper, we prepared Ni3Ce1 catalysts by three preparation methods: urea hydrothermal method (UHT), coprecipitation method (CP), and sol–gel method (SG), to establish a rational design framework by quantitatively decoupling metal–support interactions (MSI). By comparing the effects of preparation parameters including hydrothermal temperature, precipitation pH, and complexing agent-to-metal ion ratios, on catalyst structure and CO2 methanation performance, the optimal catalysts for each method were identified. Among them, the catalyst Ni3Ce1-CP-12 prepared by CP, exhibited the best performance, achieving CO2 conversion as high as 84.6% at 300 °C with good selectivity. This is attributed to its enhanced reducibility, increased surface oxygen vacancies, suitable distribution of basic sites and high surface Ni0 sites.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 9","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943410","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

Joint Estimation of State of Charge and State of Temperature for Solid-State Batteries Based on Dual-Extended Kalman Filter 基于双扩展卡尔曼滤波的固态电池充电状态和温度状态联合估计

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-08-30 DOI: 10.1002/ente.70635

Aina Tian, Chengshun Gong, Rongwei Wang, Jiuchun Jiang

{"title":"Joint Estimation of State of Charge and State of Temperature for Solid-State Batteries Based on Dual-Extended Kalman Filter","authors":"Aina Tian, Chengshun Gong, Rongwei Wang, Jiuchun Jiang","doi":"10.1002/ente.70635","DOIUrl":"https://doi.org/10.1002/ente.70635","url":null,"abstract":"Due to significant electrothermal coupling, solid-state lithium-ion batteries pose challenges for accurately estimating battery state in battery management systems. This paper proposes a Dual-Extended Kalman Filter (DEKF) framework for joint estimation of state of charge (SOC) and state of temperature (SOT). A second-order equivalent circuit model and a two-state thermal model are established, with parameters identified via particle swarm optimization and recursive least squares. An electrothermal coupling model is then built, and a DEKF-based estimator is designed to simultaneously estimate SOC, surface temperature, and core temperature. Validation under four typical dynamic driving cycles shows that for SOC estimation, the mean absolute error (MAE), and root mean square error (RMSE) remain below 0.75% and 0.85%, respectively. For temperature estimation, the MAE for surface and core temperatures was kept within 0.5924 and 0.6293 °C, respectively, while the RMSE was kept within 0.7076 and 0.7611 °C, respectively. This study proposes a feasible method for state estimation in solid-state batteries.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 9","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943697","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

Artificial Photosynthesis Over Ultrasonically Engineered SCN@Fe3O4 Magnetic Nanorods for Selective Carboxylation Reaction 超声工程SCN@Fe3O4纳米磁性棒上的人工光合作用选择性羧化反应

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-08-30 DOI: 10.1002/ente.70568

Anushka Pandey, Rajesh K. Yadav, Rajesh K. Verma, Chinna Bathula, Kanchan Sharma, Anupma Yadav, Geeta Srivastava, Shaifali Mishra, Surendra K. Jaiswal, Jin Ook Baeg

{"title":"Artificial Photosynthesis Over Ultrasonically Engineered SCN@Fe3O4 Magnetic Nanorods for Selective Carboxylation Reaction","authors":"Anushka Pandey, Rajesh K. Yadav, Rajesh K. Verma, Chinna Bathula, Kanchan Sharma, Anupma Yadav, Geeta Srivastava, Shaifali Mishra, Surendra K. Jaiswal, Jin Ook Baeg","doi":"10.1002/ente.70568","DOIUrl":"https://doi.org/10.1002/ente.70568","url":null,"abstract":"One of the most difficult challenges of this century is the quick conversion of anthropogenic carbon dioxide (CO2) into value-added solar chemicals/fuels. The best method for transforming CO2 into beneficial compounds like glucose and oxygen is natural photosynthesis. In this context, herein, an artificial photosynthesis over ultrasonically engineered SCN@Fe3O4 magnetic nanorods was designed for a selective carboxylation reaction (CO2-to-formic acid production). The SCN@Fe3O4 magnetic nanorods were employed as an efficient visible light–responsive photocatalyst for the regeneration of NADH (nicotinamide adenine dinucleotide hydrogenase) from NAD+ (nicotinamide adenine dinucleotide), where NADH serves as the biologically active hydrogen carrier. Under visible light irradiation, the optimized photocatalytic system achieved an in situ NADH regeneration (74.49%), which subsequently promoted the enzymatic reduction of CO2-to-HCOOH using formate dehydrogenase (FDH). The system produced HCOOH (170.70 µM) under optimized conditions in a phosphate buffer medium containing NAD+, Rh-based electron mediator, and triethanolamine (TEOA) as a sacrificial agent. The greater yield and high efficiency attained here suggest a sustainable and high-throughput approach to useful enzymatic applications.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 9","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943476","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

Electrochemical Analysis of Microporous Layer Parameter Optimization in Anion Exchange Membrane Electrolyzer Based on Three-Dimensional Multiphysics Simulation 基于三维多物理场模拟的阴离子交换膜电解槽微孔层参数优化电化学分析

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-08-30 DOI: 10.1002/ente.70634

Xinyue Zhao, Qiuwan Shen, Zhaoyang Zhang, Hongda Li, Shian Li

{"title":"Electrochemical Analysis of Microporous Layer Parameter Optimization in Anion Exchange Membrane Electrolyzer Based on Three-Dimensional Multiphysics Simulation","authors":"Xinyue Zhao, Qiuwan Shen, Zhaoyang Zhang, Hongda Li, Shian Li","doi":"10.1002/ente.70634","DOIUrl":"https://doi.org/10.1002/ente.70634","url":null,"abstract":"This study establishes a three-dimensional, nonisothermal, two-phase flow anion exchange membrane electrolyzer cell (AEMEC) numerical model that includes a microporous layer (MPL). The effects of flow field design, operating parameters, and key component structural parameters on the performance of electrolytic cells were studied. Results indicate that the serpentine flow channel, with its “piston flow” effect, can achieve more uniform species distribution and temperature field compared to parallel flow channels. It exhibits superior electrochemical performance at high operating voltage with a current density increase of approximately 7.8% at 2.3 V. Parameter analysis shows that increasing operating voltage and inlet water temperature can significantly improve gas production rate. For MPLs, there exists an optimal range of MPL parameters (porosity ε = 0.5–0.6, thickness d = 25–35 µm) that can achieve the best balance between mass transfer resistance and conductivity. In addition, reducing the thickness of the AEM can effectively reduce the Ohmic loss. This study provides theoretical basis and data support for the design and optimization of key components of high-performance AEMEC.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 9","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148994318","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

Engineered Antileakage and Low-Corrosion Composite Phase Change Gels for Enhanced Cold Storage: Toward Sustainable Refrigeration 工程防泄漏和低腐蚀复合相变凝胶增强冷藏：走向可持续制冷

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-08-30 DOI: 10.1002/ente.202502398

Chao Lan, Miaomiao Jiang, Musen Li, Xuelai Zhang, Yuanzhe Gu

{"title":"Engineered Antileakage and Low-Corrosion Composite Phase Change Gels for Enhanced Cold Storage: Toward Sustainable Refrigeration","authors":"Chao Lan, Miaomiao Jiang, Musen Li, Xuelai Zhang, Yuanzhe Gu","doi":"10.1002/ente.202502398","DOIUrl":"https://doi.org/10.1002/ente.202502398","url":null,"abstract":"The substantial energy consumption of conventional cold chain systems presents a significant challenge to global sustainability goals. While phase change materials (PCMs) offer promising thermal regulation solutions, they typically suffer from rigidity, leakage risks, and corrosiveness, especially in subzero applications. Composite phase change gels (CPCMGs) emerge as an innovative alternative, overcoming rigidity and leakage issues through their inherent flexibility, water retention properties, and salt compatibility. However, material corrosiveness and limited stability continue to hinder practical implementation. This study developed two low-leakage CPCMGs with phase transition temperatures of −21.6 and −21.5 °C. These cryogenic gels demonstrate negligible supercooling, exceptional leakage resistance, and high latent heat values of 246.6 and 243.9 J/g. After 500 thermal cycles, the CPCMGs maintained excellent stability and thermophysical properties. Comprehensive corrosion evaluation through 60-day immersion tests on six common metals, employing mass loss analysis and surface morphology characterization, confirmed the gel’s corrosion resistance. The most susceptible material, carbon steel (Q235), exhibited a minimal corrosion rate of only 0.02698 g/(m2 day) in CPCMG. This breakthrough resolves the persistent challenge of balancing stability, corrosion resistance, and cost in low-temperature PCMG development, while advancing sustainable cold chain applications for aquatic product preservation and biomedical sample transport.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 9","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943696","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

Polymer–Microbe Interfaces for Enhanced Electron Transfer in Microbial Fuel Cells 微生物燃料电池中增强电子转移的聚合物-微生物界面

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-08-30 DOI: 10.1002/ente.70633

Ishan Sahane, Payal Varma, Neha Neha, Balasubramanian Kandasubramanian

{"title":"Polymer–Microbe Interfaces for Enhanced Electron Transfer in Microbial Fuel Cells","authors":"Ishan Sahane, Payal Varma, Neha Neha, Balasubramanian Kandasubramanian","doi":"10.1002/ente.70633","DOIUrl":"https://doi.org/10.1002/ente.70633","url":null,"abstract":"The increasing demand for sustainable energy storage has highlighted the limitations of lithium-ion batteries, including resource depletion, thermal instability, electrode degradation, and limited recyclability. These challenges have stimulated interest in microbial fuel cells (MFCs), which simultaneously generate electricity and treat organic waste through the metabolic activity of electroactive microorganisms. However, their large-scale application is hindered by inefficient extracellular electron transfer (EET), unstable biofilms, and high interfacial resistance. This review summarizes recent advances in electroactive bacteria and polymeric materials for improving MFC performance. Particular emphasis is placed on conductive polymers, biopolymers, polymer composites, and polymer-based membranes that enhance microbial adhesion, biofilm stability, and charge transport. The review highlights how polymeric materials facilitate direct electron transfer (DET) by forming conductive bridges between bacteria and electrodes, while mediated electron transfer (MET) is enhanced through redox-active polymers and electron-shuttling molecules. Recent developments in polymer–carbon and polymer–metal oxide hybrid materials are also discussed for their roles in improving conductivity, durability, and power generation. Overall, this review provides insights into polymer-assisted interface engineering for developing efficient, stable, and scalable MFCs for sustainable bioenergy applications.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 9","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148943695","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

High-Performance Supercapacitors Based on TiO2-Supported Rice Husk-Based Activated Carbon Composite Electrodes 基于tio2负载稻壳活性炭复合电极的高性能超级电容器

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-08-25 DOI: 10.1002/ente.70629

Qingling Wei, Le Meng, Xiaoyang Yu, Zichen Wang, Xiaomin Yang

{"title":"High-Performance Supercapacitors Based on TiO2-Supported Rice Husk-Based Activated Carbon Composite Electrodes","authors":"Qingling Wei, Le Meng, Xiaoyang Yu, Zichen Wang, Xiaomin Yang","doi":"10.1002/ente.70629","DOIUrl":"https://doi.org/10.1002/ente.70629","url":null,"abstract":"The development of high-performance supercapacitors has driven interest in composite electrodes that synergistically combine carbon materials with metal oxides. In this work, TiO2/activated carbon (TiO2/AC) composites are synthesized via a microwave-assisted method, incorporating different crystalline phases of TiO2 onto rice husk-derived porous carbon. The anatase phase TiO2/AC composite demonstrates outstanding performance, achieving a high specific capacitance of 249.4 F g−1 and an energy density of 8.6 Wh kg−1 at a current density of 0.5 A g−1. Even at an elevated current density of 20 A g−1, the anatase phase TiO2/AC electrode maintains 86.6% of its initial specific capacitance and retains an energy density of 6.9 Wh kg−1, demonstrating excellent rate capability and energy-power balance. The results of the electrochemical performance tests and the structural analysis of the composite materials indicate that the performance enhancement stems from the synergistic effect between the pseudo-capacitance contributed by anatase phase TiO2 and the hierarchical porous architecture of the bio-derived activated carbon (AC). These findings underscore the promising potential of TiO2/AC composites for advanced energy storage applications.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 8","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148848641","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

Modeling-Based Optimization of Defects, Grain Boundaries, and Interfaces in Kesterite Solar Cells: A Review 基于模型的Kesterite太阳能电池缺陷、晶界和界面优化研究综述

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-08-22 DOI: 10.1002/ente.70628

Ke Zhao, Jinping Zhang, Jinlei Shi, Ziyuan Fan, Xin Rao, Jiale Yang, Ting Zhang, Wanqiu Yao, Yanan Tang, Chengyan Liu

{"title":"Modeling-Based Optimization of Defects, Grain Boundaries, and Interfaces in Kesterite Solar Cells: A Review","authors":"Ke Zhao, Jinping Zhang, Jinlei Shi, Ziyuan Fan, Xin Rao, Jiale Yang, Ting Zhang, Wanqiu Yao, Yanan Tang, Chengyan Liu","doi":"10.1002/ente.70628","DOIUrl":"https://doi.org/10.1002/ente.70628","url":null,"abstract":"Solar cells play a pivotal role in driving the global energy transition toward a sustainable, distributed, and eco-friendly energy landscape by providing clean, renewable, and cost-effective power, thereby reducing reliance on traditional fossil fuels. Among various thin-film solar cell technologies, Cu2ZnSn(S, Se)4 (CZTSSe) has emerged as one of the most promising inorganic photovoltaic materials due to its structure stability, environmental benignity, earth-abundant constituents, favorable electronic properties, and high theoretical efficiency. However, as multielemental and layered-stacking devices, CZTSSe solar cells suffer from severe deep-level states and unfavorable band alignments, arising from complicated defects, grain boundaries, and interfacial states at both front and back contacts. These intrinsic issues result in pronounced carrier nonradiative recombination and inefficient charge extraction, restricting their efficiency to a record 16.6%, well below the theoretical Shockley–Queisser limit of 32.0%. To address these efficiency bottlenecks, we review recent advances in first-principles calculations and solar cell capacitance simulator in one dimension (SCAPS-1D) simulations of bulk defects, grain boundaries, and interfaces, systematically analyzing critical challenges and discussing potential defect engineering strategies to optimize the performance of kesterite-based photovoltaics.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 8","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148785008","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

Region-Resolved Machine-Learning Forecasting of Photovoltaic-Driven Hydrogen Production Potential in Uganda: A Long Short-Term Memory–Prophet Comparison 乌干达光伏驱动的氢气生产潜力的区域解决机器学习预测：长短期记忆-先知比较

IF 3.6 4区工程技术

Energy technology Pub Date : 2026-08-22 DOI: 10.1002/ente.70627

Tamer M. Ismail, Abubakr A. Yehia, Hussein Emad, Abd El-Wahab Hamed, AbdElfattah Tamer, M. Abd El-Salam

{"title":"Region-Resolved Machine-Learning Forecasting of Photovoltaic-Driven Hydrogen Production Potential in Uganda: A Long Short-Term Memory–Prophet Comparison","authors":"Tamer M. Ismail, Abubakr A. Yehia, Hussein Emad, Abd El-Wahab Hamed, AbdElfattah Tamer, M. Abd El-Salam","doi":"10.1002/ente.70627","DOIUrl":"https://doi.org/10.1002/ente.70627","url":null,"abstract":"This study develops a region-resolved machine-learning framework for forecasting photovoltaic-derived hydrogen-production potential in Entebbe, Kampala, Mbarara, and Gulu, Uganda. Hourly meteorological data from 21 December 2023 to 20 December 2024 were used for model development, while the subsequent 45 days were reserved for independent chronological testing. Global horizontal irradiance, air temperature, wind speed, and relative humidity were selected through correlation analysis, principal-component assessment, and chronological validation. Photovoltaic electrical-energy availability was estimated first and then converted into hydrogen-production potential using a screening-level constant-efficiency electrolyzer model. Long short-term memory and Prophet forecasts were compared using R2, MAE, RMSE, and nRMSE. Long short-term memory (LSTM) consistently outperformed Prophet, achieving R2 values of 0.931–0.958 compared with 0.829–0.949 for Prophet. Relative to Prophet, LSTM reduced RMSE by 15.6%–37.2% and MAE by 43.2%–50.0%. Kampala and Gulu exhibited the highest monthly hydrogen-production potential, approximately 41 000 kg H2 km−2 of active PV area month−1, corresponding to about 2.16 GWh km−2 month−1 of PV electricity. The results demonstrate that regional meteorological variability affects both production potential and forecastability, while LSTM provides the more reliable basis for comparative site screening, reserve assessment, and preliminary scheduling of PV–hydrogen systems.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"14 8","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148784800","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