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Evaluation of energy scenarios for Malaysia for energy transition in meeting net-zero target 2050 评估马来西亚能源转型以实现2050年净零目标的能源情景
Next Energy Pub Date : 2025-04-01 DOI: 10.1016/j.nxener.2025.100295
Izzuan Farouk, Yun Ii Go, Malcolm Fernandez
{"title":"Evaluation of energy scenarios for Malaysia for energy transition in meeting net-zero target 2050","authors":"Izzuan Farouk,&nbsp;Yun Ii Go,&nbsp;Malcolm Fernandez","doi":"10.1016/j.nxener.2025.100295","DOIUrl":"10.1016/j.nxener.2025.100295","url":null,"abstract":"<div><div>The renewable energy transition has seen an increased momentum globally in accordance with the Paris Agreement towards achieving the net-zero target by 2050. With Malaysia still heavily relying on fossils for its electricity generation, proper energy planning will be required to analyse various pathways of energy transition towards the future. This can be conducted through bottom-up national energy system modelling methodologies, such as in low-emission analysis platform (LEAP). With limited literature found in national-scale modelling of Malaysia’s energy transition, this paper modelled energy transition scenarios of Malaysia through long-term modelling approaches using LEAP based on the IRENA and NETR. These scenarios were evaluated in a comparative study according to the criterion of electrical generation, carbon dioxide emissions, carbon tax costs, and investment costs. Based on the criterion assessed, the findings indicated that the RE100S was the best scenario primarily due to its comparatively low-carbon emission when accounting for the entire lifecycle assessment of 23.5 MMT by 2050 and its respective carbon tax cost of 0.8 billion USD. This research provides quantifiable findings that can be valuable to policymakers and researchers in making strategic renewable energy development plans applied to Malaysia and other developing nations.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"7 ","pages":"Article 100295"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Functionalized polyethersulfone–CoFe2O4 as electrode material for high-performance supercapacitor 功能化聚醚砜- cofe2o4作为高性能超级电容器电极材料
Next Energy Pub Date : 2025-04-01 DOI: 10.1016/j.nxener.2025.100302
Rama Kanti , Preeti Rawat , Kaushik Pal
{"title":"Functionalized polyethersulfone–CoFe2O4 as electrode material for high-performance supercapacitor","authors":"Rama Kanti ,&nbsp;Preeti Rawat ,&nbsp;Kaushik Pal","doi":"10.1016/j.nxener.2025.100302","DOIUrl":"10.1016/j.nxener.2025.100302","url":null,"abstract":"<div><div>Polyethersulfone (PES), widely used in the separation membrane industry, generates significant waste, presenting an opportunity for repurposing into high-performance supercapacitor electrode materials. This study explores the synthesis of carbon materials with nitrogen-containing functional groups using amine-functionalized polyethersulfone (P-NH₂) as a precursor. These amine groups enabled the binding of cobalt ferrite (CoFe₂O₄), which was produced using D-glucose in a sol-gel method. The resulting composite material, P-NH₂-MO, was subsequently calcined at 200 °C. Various mass ratios of the composite, specifically 1:1, 1:2, and 1:3 (P-NH₂: CoFe₂O₄), were drop-cast onto a current collector. Among these, the 1:2 mass ratio sample exhibited the highest performance, with a specific capacitance of 241 F/g at a current density of 0.5 A/g, surpassing other ratios in electrochemical performance and stability. This sample, labeled P-NH₂-MO-2, also maintained excellent rate performance, retaining 84.21% of its capacitance after 2500 cycles and 78.94% after 5000 cycles at increased current densities (up to 5 A/g). These findings highlight P-NH₂-MO-2 as a promising material for energy storage applications, offering excellent electrochemical performance and long-term stability.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"7 ","pages":"Article 100302"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental and simulative investigation of water transfer in membrane humidifiers operating with liquid and vaporous water 液体和蒸汽水膜加湿器水传递的实验和模拟研究
Next Energy Pub Date : 2025-04-01 DOI: 10.1016/j.nxener.2025.100294
S. Mull , M. Pollak , L. Weiß , W. Tegethoff , J. Koehler , M. Wensing
{"title":"Experimental and simulative investigation of water transfer in membrane humidifiers operating with liquid and vaporous water","authors":"S. Mull ,&nbsp;M. Pollak ,&nbsp;L. Weiß ,&nbsp;W. Tegethoff ,&nbsp;J. Koehler ,&nbsp;M. Wensing","doi":"10.1016/j.nxener.2025.100294","DOIUrl":"10.1016/j.nxener.2025.100294","url":null,"abstract":"<div><div>Polymer electrolyte membrane (PEM) fuel cells require exact water management to achieve high performance and long service lifetimes. The water management is controlled by the active humidification of the incoming cathode gas. This is commonly achieved by a membrane humidifier as part of the balance of plant. Membrane humidifiers are passive components that transfer water from the cathode exhaust stream to the cathode inlet stream. The operating modes of a humidifier in a mobile fuel cell system vary between gas-to-gas or gas with a small amount of liquid water-to-gas transport. The change of operating modes depends primarily on the operating point of the fuel cell. The gas-to-gas transport mode is widely investigated, but experimental and simulative studies of gas with a small amount of liquid water-to-gas transfer in membrane humidifiers are still insufficient. So far, only our own experimental data from gas with a small amount of liquid water-to-gas transport measurement points have been published. This paper presents a new experimental data set that consists of 39 gas-to-gas and 86 gas with a small amount of liquid water-to-gas transport measurement points. The following boundary conditions for the experimental data are varied: Temperature, pressure, gaseous water, liquid water, and nitrogen mass flow rate. The data presented confirm previous work: That liquid water significantly enhances mass transport for all boundary conditions. Additionally, this paper presents a new 1D simulation approach using Modelica as the modeling language. An existing gas-to-gas humidifier model was extended to a 2-phase flow model by adjusting 2 fit factors. The experimental data presented here enable the validation. The model matches the overall experimental data set with a high accuracy of <em>R</em><sup>2</sup> = 0.90. This shows a generic approach for a simple extension from a gas-to-gas humidifier model to a 2-phase flow model. Using this modeling approach will result in more accurate humidifier performance prediction and therefore more accurate water management control for the entire fuel cell system. Moreover, it shows the potential of actively using liquid water to enhance the humidifier’s performance.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"7 ","pages":"Article 100294"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143942241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Transforming oil market analysis: A novel GAN + LSTM predictive framework 改变石油市场分析:一种新的GAN + LSTM预测框架
Next Energy Pub Date : 2025-04-01 DOI: 10.1016/j.nxener.2025.100303
Prity Kumari , G.Y. Chandan , Satish Kumar M
{"title":"Transforming oil market analysis: A novel GAN + LSTM predictive framework","authors":"Prity Kumari ,&nbsp;G.Y. Chandan ,&nbsp;Satish Kumar M","doi":"10.1016/j.nxener.2025.100303","DOIUrl":"10.1016/j.nxener.2025.100303","url":null,"abstract":"<div><div>A novel method of predicting the crude oil WTI futures prices based on a data set covering April 12, 2009 through January 7, 2024. To capture complex market dynamics more precisely, it incorporates key market factors such as open, high, and low price along with slacked variable inclusions and moving averages over 7, 14, and 30 days. It includes generative adversarial networks augmented with long short-term memory (GAN + LSTM), LSTM, gated recurrent units (GRUs), and artificial neural networks (ANNs) as predictive models, where their performance was compared by a variety of measurements like mean squared error (MSE), mean absolute error (MAE), mean absolute percentage error (MAPE), symmetric mean absolute percentage error (SMAPE), normalized root mean square error (NRMSE), and adjusted R-square. The GAN + LSTM model proved its accuracy over others, with the lowest MSE (0.001), MAE (0.029), MAPE (4.639), SMAPE (4.734), NRMSE (0.057), and the highest adjusted R-squared (0.943). This model has been viewed as dominant due to its ability to integrate and gain information from complex data patterns. In volatile markets, the outcome of this study will be of fundamental significance in developing proactive models that will provide the most efficient means of making more informed decisions.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"7 ","pages":"Article 100303"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hydrogen interaction in bulk fluids for geological storage application using NMR 氢相互作用在大体积流体地质储存中的应用
Next Energy Pub Date : 2025-04-01 DOI: 10.1016/j.nxener.2025.100298
Sidi Mamoudou, Son Dang, Chandra Rai
{"title":"Hydrogen interaction in bulk fluids for geological storage application using NMR","authors":"Sidi Mamoudou,&nbsp;Son Dang,&nbsp;Chandra Rai","doi":"10.1016/j.nxener.2025.100298","DOIUrl":"10.1016/j.nxener.2025.100298","url":null,"abstract":"<div><div>Hydrogen geostorage is a crucial component of decarbonization, enabling large-scale energy storage and supporting the transition to a low-carbon economy. By allowing long-term hydrogen storage in subsurface formations such as depleted oil and gas reservoirs, geostorage enhances energy security and stabilizes energy supply. This study serves as a preliminary step before investigating H₂ interactions in saturated porous rocks, focusing on hydrogen behavior in reservoir fluids using nuclear magnetic resonance (NMR). The tested fluids include water, dodecane oil (light oil), dead oil, and ozokerite wax (heavy oil) under pressures up to 1800 psi. Additionally, deuterated water and perfluorinated HT-230 were used as control fluids due to their negligible NMR signals. HT-230, commonly used as a confining fluid in core plug measurements, also provides a baseline for comparison. T₂ relaxation times served as a proxy for distinguishing free hydrogen from dissolved hydrogen in bulk liquid based on molecular interactions. Since it is sensitive to hydrogen protons in fluids, it was used to assess changes in bulk properties such as viscosity and density. The results indicate that hydrogen predominantly remains in the free phase when interacting with water, as evidenced by fast relaxation times (1–20 ms) and no observed changes in T₂ with pressure, confirming limited dissolution. Similarly, hydrocarbons—including dodecane, dead oil, and wax—showed no evidence of hydrogen dissolution under NMR, as only free-phase hydrogen signals (1–20 ms) were detected. However, visual observations of gas bubbles in dead oil suggest physical hydrogen trapping rather than true molecular dissolution, indicating hydrogen retention in a discrete gas phase without full integration into the liquid phase. In perfluorinated HT-230, an intermediate T₂ relaxation signal (100–300 ms) suggests possible hydrogen dissolution, with an estimated volume of 0.80–1.20 ± 0.02 cc at room temperature. This finding indicates that while HT-230 is generally inert, some level of hydrogen interaction may occur. Therefore, caution is advised when using HT-230 as a confining fluid in core plug tests under stress, or this signal should be excluded from analysis. Although this study was conducted at relatively low temperatures and over short experimental durations, hydrogen can be physically trapped in dead oil within our test conditions. These results provide a baseline understanding of H₂ interactions in bulk fluids, informing future core plug measurements of hydrogen retention, diffusion, and mobility in depleted oil and gas reservoirs.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"7 ","pages":"Article 100298"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143942242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multi-objective optimization of a novel control algorithm and scheduling procedure for optimal use of energy storage systems 基于多目标优化的储能系统优化调度算法
Next Energy Pub Date : 2025-04-01 DOI: 10.1016/j.nxener.2025.100280
Amirhossein Hamzeiyan , Armin Ebrahimi
{"title":"Multi-objective optimization of a novel control algorithm and scheduling procedure for optimal use of energy storage systems","authors":"Amirhossein Hamzeiyan ,&nbsp;Armin Ebrahimi","doi":"10.1016/j.nxener.2025.100280","DOIUrl":"10.1016/j.nxener.2025.100280","url":null,"abstract":"<div><div>Peak shaving with energy storage systems (ESSs) is a promising approach to optimize energy use, reduce costs, and ensure a more reliable power grid.</div><div>This paper aims to improve the performance of a novel control algorithm for efficient peak shaving by using sensitivity analysis and multi-objective optimization techniques. Regarding this, 2 hypothesis load demand profiles as well as 5 different scenarios with diverse objective functions, including ESS capacity, standby days of the ESS, etc., were considered for multi-objective optimization, and the control algorithm was applied to them. These scenarios were designed to explore the algorithm's adaptability to different operating conditions and to evaluate its effectiveness across varying system constraints. The Pareto front of each was extracted and the results of each were detailed. Among the most important obtained results, it can be mentioned that the decrease of 58.29% and 51.32% of ESS standby days in load profiles A and B, respectively, compared to basic conditions. Also, it has been possible to reduce peak demands to 16.29% and 19.66%, respectively, compared to the maximum value of profiles A and B.</div><div>To enhance the efficiency and gain more precise control over the energy storage system's charging and discharging rates, incorporating upper limits for charging and lower limits for discharging were proposed. This modification requires minimal changes to the existing algorithm. Future research could concentrate on integrating direct regulation of the charging and discharging rates of the ESS by establishing upper and lower bounds for these rates as decision variables within the optimization framework. This approach would more accurately represent the operational constraints of the ESS, thereby improving the model’s applicability and scalability for real-world implementations.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"7 ","pages":"Article 100280"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An ammonia power system with zero-carbon potential: A next power? 具有零碳潜力的氨电力系统:下一个动力?
Next Energy Pub Date : 2025-04-01 DOI: 10.1016/j.nxener.2025.100297
Jingyu Wang , Ligeng Li , Xuanang Zhang , Yiwei Yin , Hua Tian , Gequn Shu , Zhenyuan Zi , Yu Chen
{"title":"An ammonia power system with zero-carbon potential: A next power?","authors":"Jingyu Wang ,&nbsp;Ligeng Li ,&nbsp;Xuanang Zhang ,&nbsp;Yiwei Yin ,&nbsp;Hua Tian ,&nbsp;Gequn Shu ,&nbsp;Zhenyuan Zi ,&nbsp;Yu Chen","doi":"10.1016/j.nxener.2025.100297","DOIUrl":"10.1016/j.nxener.2025.100297","url":null,"abstract":"<div><div>As a critical sector for carbon emissions, reducing carbon emissions in transportation internal combustion engines (ICE) remains an important issue. Ammonia has demonstrated strong performance and zero-carbon potential in ICEs and heat utilization. Therefore, this discussion proposes a zero-carbon engine concept to achieve energy savings and emission reductions. The proposed engine is an ammonia medium hybrid engine (AMHE), which utilizes ammonia as the sole working medium to achieve power conversion through combustion and heat exchange within the power system. This discussion demonstrates that the AMHE has the potential to reach the world-advanced level, with a brake thermal efficiency of 59.3%. With the development of blue ammonia to green ammonia, the promotion of the AMHE could reduce CO<sub>2</sub> emissions by 64.32–98.90%, equivalent to over 220 million tons in China's transportation sector. Thermodynamic analysis demonstrates that the ammonia diesel cycle achieves the ignition temperature at a compression ratio of approximately 22, which is significantly lower than the previously expected value of 35. This discussion also analyzes the impact of diesel cycle parameters on the Rankine cycle (RC) performance and explores the potential for performance enhancement and compression ratio reduction when using the ammonia RC instead of jacket water. This discussion aims to propose the AMHE as a viable solution for power systems with zero-carbon potential. To this end, we validate its performance and carbon reduction potential of the AMHE and outline future research directions and priorities for this power system.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"7 ","pages":"Article 100297"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143911532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characterization and identification of potential microbial fuel cells capable for the detoxification of hexavalent chromium from leather industry wastewater with power generation 具有发电脱除皮革工业废水中六价铬潜力的微生物燃料电池的表征和鉴定
Next Energy Pub Date : 2025-04-01 DOI: 10.1016/j.nxener.2025.100299
Christina Saran , Devendra Kumar Patel , Vartika Jain , Gubbala Naga Venkata Satyanarayana , Ganesh Dattatraya Saratale , Luiz Fernando Romanholo Ferreira , Ram Naresh Bharagava
{"title":"Characterization and identification of potential microbial fuel cells capable for the detoxification of hexavalent chromium from leather industry wastewater with power generation","authors":"Christina Saran ,&nbsp;Devendra Kumar Patel ,&nbsp;Vartika Jain ,&nbsp;Gubbala Naga Venkata Satyanarayana ,&nbsp;Ganesh Dattatraya Saratale ,&nbsp;Luiz Fernando Romanholo Ferreira ,&nbsp;Ram Naresh Bharagava","doi":"10.1016/j.nxener.2025.100299","DOIUrl":"10.1016/j.nxener.2025.100299","url":null,"abstract":"<div><div>Microbial fuel cells (MFCs) are a potential green technology that might produce bioelectricity while treating wastewater and reducing heavy metal (Cr<sup>6+</sup>) pollution. A dual-chamber MFC is inoculated with potentially active bacteria to reduce Cr<sup>6+</sup> and generate bioelectricity. Three bacterial isolates, <em>Pseudomonas stutzeri</em> (CSDEM1), <em>Microbacterium algeriense</em> (CSDEM3), and <em>Bacillus stratosphericus</em> (CSDEM4), were tested for their efficiency. Among these, CSDEM3 (<em>M. algeriense</em>) showed the highest ability to reduce Cr<sup>6+</sup> (80.13%) at a concentration of 1500 ppm and produced the highest bioelectricity (302 mV and 501 µA), which is the novelty of this work. Bacterial cells exposed to Cr<sup>6+</sup> displayed larger cell size than unexposed cells. Chromium peaks in exposed cells were verified by energy dispersive X-ray (EDX) analysis, suggesting that either precipitated Cr<sup>3+</sup> or its complexation with bacterial cell components was the cause. The electrogenic mechanism used by the isolates, single strain, and consortia (CSDEM134) in the MFCs was revealed by the anodic biofilm generation yield. When compared to a single strain, the use of bacterial consortia in MFCs produced slightly better effluent physicochemical characteristics as well as improved Fourier transform infrared spectrophotometric (FT-IR) and Gas chromatography–mass spectrometry (GC-MS) analytical results. This study demonstrates how MFCs can remove Cr<sup>6+</sup> from wastewater effectively and sustainably while producing sustainable bioelectricity.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"7 ","pages":"Article 100299"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143942450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Highly flexible flyash/multiwalled carbon nanotubes composite paper: A sustainable electrode for new generation Li-ion batteries 高柔性粉煤灰/多壁碳纳米管复合纸:新一代锂离子电池的可持续电极
Next Energy Pub Date : 2025-04-01 DOI: 10.1016/j.nxener.2025.100267
Satish Teotia , V. Selvamani , Anisha Chaudhary , Tejendra K. Gupta , Rajeev Kumar , Anchal Srivastava , Sanjay R. Dhakate , Bhanu P. Singh
{"title":"Highly flexible flyash/multiwalled carbon nanotubes composite paper: A sustainable electrode for new generation Li-ion batteries","authors":"Satish Teotia ,&nbsp;V. Selvamani ,&nbsp;Anisha Chaudhary ,&nbsp;Tejendra K. Gupta ,&nbsp;Rajeev Kumar ,&nbsp;Anchal Srivastava ,&nbsp;Sanjay R. Dhakate ,&nbsp;Bhanu P. Singh","doi":"10.1016/j.nxener.2025.100267","DOIUrl":"10.1016/j.nxener.2025.100267","url":null,"abstract":"<div><div>Flexible energy storage devices have been the focus of much research and development as potential sources of energy for portable electronic devices. However, designing an innovative electrode structure that is cost-efficient, sustainable, and resource-efficient poses a significant challenge to the advancement of next-generation flexible-energy storage materials. Flyash, as an industrial waste, can be used as a potential electrode material because of its low cost and the presence of various metal oxides, especially silicon-based materials. Using a low-cost and binder-free vacuum filtration method, we present a facile method for forming a very stable porous architecture of flyash and multiwalled carbon nanotubes (MWCNTs). Here, the performances of flyash/MWCNT paper anodes prepared via acid-reflux and simple stirring methods are compared to determine the influence of both methods on the electrochemical properties of the anode. When using a current density of 0.1 A/g for up to 300 cycles, the acid-refluxed and flyash blended MWCNTs composite paper anodes exhibit a specific capacity of 290 mAh/g and 272 mAh/g, respectively, with over 98% coulombic efficiency. The highly porous and interconnected MWCNTs conducting network makes it easier for Li<sup>+</sup> ions to penetrate and come into direct contact with the metal oxides found in flyash. As a result, the composite paper shows a high specific capacity that holds steady over extended cycles and impressive rate capabilities for Li storage.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"8 ","pages":"Article 100267"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fermentative biohydrogen production potential of sorghum distillers grains using anaerobic microflora at various pH values 不同pH值下厌氧菌群对高粱酒糟发酵产氢潜力的影响
Next Energy Pub Date : 2025-04-01 DOI: 10.1016/j.nxener.2025.100284
Ching-Chun Lu , Chiu-Yue Lin
{"title":"Fermentative biohydrogen production potential of sorghum distillers grains using anaerobic microflora at various pH values","authors":"Ching-Chun Lu ,&nbsp;Chiu-Yue Lin","doi":"10.1016/j.nxener.2025.100284","DOIUrl":"10.1016/j.nxener.2025.100284","url":null,"abstract":"<div><div>Sorghum distillers grains (SDGs) are rich in proteins, vitamins, and minerals and are a good feedstock for anaerobically generating biogases such as biohydrogen and biomethane. The present work aims to investigate the anaerobic biohydrogen production potential of SDG to explore its added value. pH is an important operating factor affecting biological reactions and was tested at values of 5.0, 5.5, 6.0, and 6.5. The experimental results show that the hydrogen production rate (HPR) is less pH-dependent, but the hydrogen yield (HY) is rather pH-dependent with near-neutral conditions favoring biohydrogen production. pH 6.5 resulted in an HPR of 4.9 L/L-d (188 mmol/L-d) and peak HY of 81 mL/g chemical oxygen demand. It is shown that SDG is a new and prospective biomass source for biohydrogen production, and with this application, the problem of treating kaoliang liquor SDG could be reduced. Approaches to increase biohydrogen production and applications of the experimental results were also elucidated.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"7 ","pages":"Article 100284"},"PeriodicalIF":0.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143883285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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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