Next Energy最新文献

{"title":"Co-pyrolysis and co-gasification of biomass and plastics for next-generation fuel production and the effect of various operating parameters on it: A review","authors":"Kuntalika Das ,&nbsp;Sankar Bhattacharya ,&nbsp;Sandeep Kumar","doi":"10.1016/j.nxener.2025.100475","DOIUrl":"10.1016/j.nxener.2025.100475","url":null,"abstract":"<div><div>The use of fossil fuels leads to greenhouse gas emissions and climate change. At the same time, the finite reserves of crude oil, natural gas, and coal necessitate a shift to alternative energy sources. Apart from the typical non-conventional energy sources, waste-to-energy routes are gaining popularity. Non-biodegradable plastic waste, which possesses a high amount of energy, can be thermo-chemically treated (pyrolysis or gasification) to generate fuel. On the other hand, biomass (BM) thermochemical conversion has the potential to emerge as a green energy source with proper forest management. Co-pyrolysis and co-gasification of plastic and BM show the potential for further improvement in fuel quality and quantity. The available research works involve a range of BM and plastic types, making it difficult to conclude a generalised trend of product generation. The current work systematically reviews the recent research data by categorising the results as per the type of feedstock used and the conversion processes. A general trend of fuel yield for various feedstock types and relative contents is summarised. The effects of various parameters – operating temperature, gasifying agent, blending ratio, reactor type, and use of catalysts are also discussed, along with an insight into the catalytic conversion mechanism. The review will be beneficial to get a broad picture of the recent progress in BM-plastic co-pyrolysis and co-gasification, associated challenges, and potential applications.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"10 ","pages":"Article 100475"},"PeriodicalIF":0.0,"publicationDate":"2025-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145521072","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}

{"title":"Asymmetrical voltage cancellation controlled multiload resonant inverter for induction cooking system","authors":"Deepthi Reddy Thoutreddy,&nbsp;Porpandiselvi S","doi":"10.1016/j.nxener.2025.100477","DOIUrl":"10.1016/j.nxener.2025.100477","url":null,"abstract":"<div><div>Induction heating (IH) holds a pivotal role in heating technology due to its numerous advantages such as simple, contactless, fast operation, environmentally friendly, and cost-effective nature. Domestic induction cooking (IC) is one of the most popular applications of IH. It is due to its safety, quick heating, cleanliness, and controllability. This paper presents a full-bridge resonant inverter with diode and series switch per load for multiload IC system using asymmetrical voltage cancellation (AVC) control with constant switching frequency. The advantages of this inverter circuit with AVC control include independent power control, high efficiency, wider output power range, soft-switching, and suitable for high-frequency loads. It can be seamlessly scaled to accommodate ‘n’ loads by integrating a diode and series switch combination for every new load. This configuration has been simulated using orcad personal simulation program with integrated circuit emphasis and validated through an experimental setup, generating 1108 W with a peak efficiency of 95.9%. The simulation and experimental results confirm that this inverter configuration is a viable approach for multiload IC applications.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"10 ","pages":"Article 100477"},"PeriodicalIF":0.0,"publicationDate":"2025-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145521158","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}

{"title":"A novel approach for battery longevity through controlled surface lithium concentration gradient","authors":"Kasim (Kaz) A. Adewuyi","doi":"10.1016/j.nxener.2025.100473","DOIUrl":"10.1016/j.nxener.2025.100473","url":null,"abstract":"<div><div>One of the key challenges in battery degradation is mechanical failure, such as cracks and delamination, caused by stress from lithium concentration gradients inside active particles. In conventional charging protocols, such as constant current constant voltage (CCCV) charging, the concentration gradient and corresponding stress levels vary, and reaching critical levels can lead to mechanical failure. This paper introduces a new charging methodology called constant gradient constant voltage (CGCV), which regulates the charging current to maintain a constant lithium gradient at the surface of active particles, thereby limiting stress development and mechanical crack propagation. To control the concentration gradient, factors such as charging current, lithium diffusivity, and particle geometry must be considered.</div><div>Two scenarios are considered to demonstrate CGCV effectiveness. For scenario 1, the CGCV shows a significant reduction in charging time, with a 50% reduction compared to 0.1 C CCCV, while exhibiting slightly slower degradation rates. In scenario 2, 0.5 C CCCV, which has roughly equivalent charging time to CGCV, shows significantly more capacity fade; it takes CCCV 66 cycles for 20% capacity fade, while CGCV takes 100 cycles to reach only a 12% capacity fade. These 2 scenarios show that the CGCV methodology effectively mitigates degradation while shortening charging time.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"10 ","pages":"Article 100473"},"PeriodicalIF":0.0,"publicationDate":"2025-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145521073","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}

{"title":"Advancements in carbon capture and utilization technologies: Transforming CO2 into valuable resources for a sustainable carbon economy","authors":"Harish Kumar ,&nbsp;Rahul Sharma ,&nbsp;Ashok K. Malik ,&nbsp;Ashok K. Sharma ,&nbsp;Parvin Kumar ,&nbsp;Devender Singh","doi":"10.1016/j.nxener.2025.100476","DOIUrl":"10.1016/j.nxener.2025.100476","url":null,"abstract":"<div><div>The escalating atmospheric CO₂ concentration arising from fossil fuel combustion and industrial activities necessitates immediate mitigation strategies to address global warming and environmental degradation. Carbon Capture and Utilization (CCU) technologies have emerged as a pivotal approach to transforming CO₂ from a greenhouse gas into a valuable feedstock for fuels and chemicals. This review critically examines recent advancements in CO₂ capture techniques—including absorption, adsorption, membrane separation, and mineral carbonation—and their integration with various conversion routes such as thermocatalytic hydrogenation, electrochemical and photocatalytic reduction, and biological fixation. Particular emphasis is placed on the synthesis of methanol, ethanol, methane, syngas, cyclic carbonates, and biofuels, discussing their catalytic systems (Cu-, Ni-, and Ti-based catalysts, metal–organic frameworks, and nanostructured semiconductors), reaction mechanisms, and process efficiencies. The review also evaluates techno-economic feasibility, energy input–output ratios, and net CO₂ reduction potentials, highlighting strategies for coupling renewable hydrogen and solar-driven systems to improve sustainability. Finally, it outlines the current technology readiness levels (TRLs), life-cycle assessment (LCA) outcomes, and research priorities needed to accelerate the industrial implementation of CCU technologies toward a low and circular carbon economy.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"10 ","pages":"Article 100476"},"PeriodicalIF":0.0,"publicationDate":"2025-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145469085","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}

{"title":"Climate-adaptive performance and environmental benchmarking of R600a refrigeration systems under tropical operating conditions","authors":"Aniket A. Dhavale ,&nbsp;Mandar M. Lele","doi":"10.1016/j.nxener.2025.100453","DOIUrl":"10.1016/j.nxener.2025.100453","url":null,"abstract":"<div><div>In the context of rising global temperatures and the urgent need for low-Global Warming Potential (GWP) alternatives, enhancing the climate adaptability of domestic refrigeration systems is essential for sustainable cooling. Tropical regions like India regularly experience ambient temperatures exceeding 35 °C, yet conventional energy rating protocols evaluate refrigerators under fixed and moderate conditions, which poorly reflect real-world usage. This discrepancy highlights a critical gap: the lack of performance data under dynamic, high-stress thermal environments that influence system efficiency, refrigerant behavior, and energy consumption. Addressing this, the present study experimentally investigates the thermodynamic behavior of a modified 190 L refrigerator using R600a, a natural hydrocarbon refrigerant with low global warming potential, under varying cabinet temperatures (0–15 °C) and ambient conditions (30–40 °C) that simulate tropical environments. Performance metrics such as evaporator heat absorption (Qₑᵥₐₚ), condenser heat rejection (Q_cond), power consumption, compressor discharge temperature, and coefficient of performance (COP) were measured and analyzed. Results showed up to 17% and 20% increases in Qₑᵥₐₚ and Q_cond, respectively, with rising cabinet temperatures. A 10 °C ambient temperature rise caused an 11.2% COP drop and a ∼16% increase in discharge temperature, indicating considerable thermal stress. Findings were validated against IMST-ART simulations with deviations within ±5–7%. By shifting away from idealized, static test conditions, this study offers climate-responsive insights into the real-world performance of R600a systems. Academically, it introduces climate responsive coefficient of performance and sustainaibility index as advanced performance indicators that address both engineering and sustainability goals. Socio-economically, the study underscores the potential for carbon savings, energy-efficient appliance policy reform, and better refrigerant selection for developing nations. Academically, it introduces performance mapping techniques that integrate thermal efficiency with environmental and economic metrics. Socio-economically, the study underscores the potential for carbon savings, energy-efficient appliance policy reform, and better refrigerant selection for developing nations. This work calls for an urgent transition toward climate-adaptive testing standards and supports the development of cooling systems engineered for high-heat environments bridging the gap between lab performance and field realities in the global pursuit of sustainable refrigeration.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"10 ","pages":"Article 100453"},"PeriodicalIF":0.0,"publicationDate":"2025-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145442683","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}

{"title":"Thermal management analysis of fast-charging lithium-ion battery packs: Effects of cooling strategies","authors":"Yong-Ming Dai ,&nbsp;Yu-Chieh Ting ,&nbsp;Chia Ming Chang ,&nbsp;Chien-Tzu Huang","doi":"10.1016/j.nxener.2025.100465","DOIUrl":"10.1016/j.nxener.2025.100465","url":null,"abstract":"<div><div>Lithium-ion batteries face critical thermal management challenges during fast-charging operations, where inadequate cooling can lead to thermal runaway and safety hazards. Current research is limited by expensive commercial computational fluid dynamic (CFD) software that restricts access to advanced thermal simulation capabilities, particularly hindering researchers in developing countries and educational institutions. This study addresses these challenges by employing the open-source FiPy platform to develop a comprehensive 3-dimensional thermal model for lithium-ion battery packs. The numerical analysis systematically investigates 3 cooling modes (natural, forced, and liquid convection with h = 10, 50, and 250 W/m²·K) and 3 thermal interface materials called TIMs (k = 0.026, 0.5, and 4.0 W/m·K). Results demonstrate that liquid convection achieves superior thermal control with temperature rises below 3.2 °C, while natural convection results in a significant temperature rise of 30.7 °C. TIMs significantly enhance heat dissipation, with moderate-conductivity TIM reducing temperature rises by 34%. Critical safety analysis reveals that 5 C fast charging under inadequate cooling results in catastrophic temperatures exceeding 200 °C. By utilizing the free FiPy framework and sharing all codes on GitHub, this research democratizes access to battery thermal simulation capabilities, enabling cost-effective analysis worldwide and accelerating innovation in thermal management systems.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"9 ","pages":"Article 100465"},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145332200","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}

{"title":"Charge and energy storage properties of NiO-AC composites in organic electrolyte using operando Raman and distributed capacitance analyses in the time domain","authors":"Cássio Almeida ,&nbsp;Paloma Jackson ,&nbsp;Rafael Vicentini ,&nbsp;Eric L. Pereira ,&nbsp;Erick Santos ,&nbsp;Leonardo Morais Da Silva ,&nbsp;Davi M. Soares ,&nbsp;Hudson Zanin","doi":"10.1016/j.nxener.2025.100461","DOIUrl":"10.1016/j.nxener.2025.100461","url":null,"abstract":"<div><div>Pursuing pseudocapacitive materials with higher energy densities for future electrochemical energy storage systems requires a comprehensive understanding of material and electrochemical properties. In addition to charge-storage mechanisms in the active material, the electrolyte medium plays an important role in energy density. Organic solvent electrolytes exhibit a wider operating voltage window in comparison to aqueous-based electrolytes, yet the investigation of pseudocapacitive active materials in supercapacitor electrodes remains underexplored. Here, we report a facile and scalable synthesis of the pseudocapacitive composite material NiO-activated carbon (AC) as a supercapacitor electrode. A comprehensive electrochemical study in the organic solvent medium is presented, elucidating the pseudocapacitive properties of NiO-AC, assessing the stable working voltage window in an organic solvent medium, and investigating ion dynamics during charge via operando Raman. Using electrochemical characterization techniques, such as single-step chronoamperometry (SSC), and the in-situ Raman results we showed that the synthesized material (NiO-AC) is stable for operation at 2.6 V. NiO-AC, presenting specific power of 23.7 kW kg⁻¹ and specific energy of 21.4 W h kg⁻¹, with a capacitance increase due to the contribution of the NiO species, highlighting the potential of the study of pseudocapacitive materials in organic electrolyte systems.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"9 ","pages":"Article 100461"},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145332208","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}

{"title":"Modeling and simulation-based performance study of a DC-DC power processing circuit for building-attached photovoltaic systems","authors":"Swarna Jyoti Saharia ,&nbsp;Asim Datta ,&nbsp;Sadhan Mahapatra","doi":"10.1016/j.nxener.2025.100446","DOIUrl":"10.1016/j.nxener.2025.100446","url":null,"abstract":"<div><div>This study presents the modeling, design, and simulation of a DC-DC power processing circuit for building-attached photovoltaic (BAPV) systems. With the growing integration of solar energy into urban infrastructure, efficient power conversion becomes essential for maximizing energy yield and ensuring reliable operation. The converter topology features maximum power point tracking (MPPT) using the incremental conductance (IC) algorithm combined with a proportional-integral (PI) controller. This design addresses the dynamic irradiance and partial shading conditions that are common in building-mounted PV modules. The comprehensive model integrates solar irradiance profiles, PV module characteristics, and converter control strategies and is implemented in MATLAB/Simulink for performance evaluation. Simulation results show that the system maintains a regulated output voltage of 48 ± 0.4 V across varying irradiance levels, with a voltage ripple limited to 1–3% of the output voltage. The findings demonstrate the circuit’s capability to enhance energy yield, improve operational reliability, and support the development of smart, sustainable urban energy systems.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"9 ","pages":"Article 100446"},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145265008","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}

{"title":"Experimental investigation to enhance photovoltaic efficiency using coconut oil-infused phase change material as heat sink","authors":"A. Hakim,&nbsp;S.P. Chew,&nbsp;T. Azfar,&nbsp;L.S. Supian,&nbsp;A.S. Mokhtar","doi":"10.1016/j.nxener.2025.100455","DOIUrl":"10.1016/j.nxener.2025.100455","url":null,"abstract":"<div><div>Photovoltaic (PV) panels are widely used to harvest and convert sunlight (light energy) into electricity and provide electrical energy for a variety of electric applications. A lot of research has been done on these PV solar panels to ensure their maximum electricity generation in an ecofriendly way. Excessive heat buildup can lead to a drop in PV panel efficiency, which results in loss of power output and performance. Traditional cooling techniques, like air and water cooling, are not practical, sustainable, and efficient. In particular, the effectiveness of BIO-PCMs on PV efficiency still needs clarification. This study minimizes that limitation through PVB, which is employed for the thermal management of PV panels in the form of plant-based phase change material (PCM). The Co-PCM is an amalgamation of Cocos nucifera oil and paraffin wax; the thermal conductivity property was evaluated using KD2 Pro thermal analyzer. The main purpose was to evaluate how the CO-PCM affects temperature variations on the PV panel. Results showed that incorporation of the Co-PCM yielded a significant temperature reduction of around 11.4<!--> <!-->℃ on the back side of the PV panel at a 5 mm PCM thickness. Moreover, the experiments showed that the average power density output of the PV panel increased by 51.21 mW/℃ and the overall power efficiency of the PV panel also improved by 12.82% compared to the PV panel without PCM.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"9 ","pages":"Article 100455"},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145332205","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}

{"title":"An optimized double-integral sliding mode controller based hybrid gray wolf with bald eagle search algorithm for a fuel cell power system","authors":"Issam Bekki ,&nbsp;Habiba Rizki ,&nbsp;Fatima Ez-Zahra Lamzouri ,&nbsp;El-Mahjoub Boufounass ,&nbsp;Aumeur El Amrani","doi":"10.1016/j.nxener.2025.100447","DOIUrl":"10.1016/j.nxener.2025.100447","url":null,"abstract":"<div><div>This study presents an optimal robust maximum power point tracking (MPPT) control for a proton exchange membrane fuel cell (PEMFC) system operating under specified operational conditions. The investigated PEMFC system includes a fuel cell with a DC-DC converter, providing a resistive charge. The control scheme combines the robust nonlinear double-integral sliding mode control (DISMC) and the hybrid gray wolf optimizer with bald eagle search (GWO-BES) algorithm. As a novel strategy, the GWO-BES-DISMC controller combines the benefits of double-integral sliding mode methods, where the double-integral term eliminates steady-state error and inherently reduces chattering through the generation of smooth control signals, while optimized controller gains prevent overshoot. The hybrid GWO-BES algorithm optimizes DISMC parameters by leveraging GWO's global search capability to avoid local minima and BES's exploitation strength for precise parameter fine-tuning. Moreover, the GWO-BES technique is employed to optimize the parameters of the DISMC controller. The novelty lies in the first-time integration of hybrid GWO-BES optimization with double-integral sliding mode control for PEMFC systems, addressing chattering elimination and parameter optimization simultaneously. The stability of the controlled PEMFC power system is affirmed through the application of the Lyapunov function. Additionally, several simulations of the proposed GWO-BES-DISMC are investigated and compared to the DISMC and the SMC controllers for operational conditions. The simulation results conclusively demonstrate that the proposed approach exhibits superior robustness with 85.9% faster settling time (0.184 s vs 1.309 s for SMC), 97.4% reduction in steady-state error, and 99.53% efficiency, even with external load variations, while remaining stable without overshoot.</div></div>","PeriodicalId":100957,"journal":{"name":"Next Energy","volume":"9 ","pages":"Article 100447"},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220145","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}