Article
Chemistry, Physical
P. Kazempoor, J. Asadi, R. J. Braun
Summary: This study addresses the challenges in modeling solid oxide electrolysis cells (SOECs) with feed gases containing low steam-to-CO2 concentration ratios. The common approach of neglecting the CO2 electrochemical reduction reaction in SOEC modeling is validated against experimental results. The validation results show that the model deviation with experimental data increases at certain current densities. It is also shown that when the steam flow supplied to the cell is high enough to support the water-gas shift reaction, the electrochemical reaction involving CO2 can be neglected.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Electrochemistry
Yun Zheng, Zhongwei Chen, Jiujun Zhang
Summary: Solid oxide electrolysis cells (SOECs), including oxygen ion-conducting SOEC (O-SOEC) and proton-conducting SOEC (H-SOEC), have been actively researched as next generation electrolysis technologies with high-energy conversion efficiencies, providing higher-temperature routes for energy storage and conversion. Current focus is on optimizing performance and stability, as well as promoting wider practical implementation.
ELECTROCHEMICAL ENERGY REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Naouma Bimpiri, Argyro Konstantinidou, Dimitrios Tsiplakides, Stella Balomenou, Kalliopi Maria Papazisi
Summary: In this study, the lifetime issue of silicon-based thin film solar cell is explored by investigating the hydrogen evolution reaction on platinum electrode. By analyzing the steady-state current and voltage change of the cell, it is found that the platinum electrode undergoes oxidation and reduction processes over a longer period of study, leading to a decrease in efficiency. These results reveal the functionality and degradation mechanism of the platinum electrode in hydrogen evolution.
Article
Chemistry, Multidisciplinary
Naoya Fujiwara, Hironori Nagase, Shohei Tada, Ryuji Kikuchi
Summary: In the experiment of high-efficiency steam electrolysis at intermediate temperatures, the key stability issues of proton-conducting solid acid electrolytes were found to be the migration of electrolyte and the design of the anode. The study demonstrated that using Pt mesh as an alternative anode could significantly improve stability.
Article
Nanoscience & Nanotechnology
Ziyi Zhu, Mingyang Zhou, Kai Tan, Zidai Fan, Dan Cao, Zhijun Liu, Meilong Chen, Yu Chen, Min Chen, Jiang Liu
Summary: The development of solid oxide cell (SOC) based on proton-conducting electrolyte is hindered by performance degradation caused by mismatch in thermal expansion coefficients between the electrolyte and the oxygen electrode. This paper proposes a solution by increasing the TEC of the electrolyte and demonstrates the improved stability of SOC with Fe-doped electrolyte and oxygen electrode materials. The Fe doping increases the TEC of BaZr0.3Ce0.5Y0.1Yb0.1O3-delta electrolyte and decreases the TEC of PrNi0.5Co0.5O3-delta oxygen electrode material.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Shiqing Hu, Bingjie Pang, Liming Zhang, Zhongwei Cao, Peng Zhang, Yunjie Ding, Ryan O'Hayre, Xuefeng Zhu, Weishen Yang
Summary: Preventing Ni oxidation and carbon deposition in CO2 electrolysis is a critical challenge for solid oxide electrolysis cells (SOECs). This study reveals that the Nernst voltage, in relation to the operating voltage, controls these reactions and enables the establishment of a reaction phase diagram. The successful demonstration of pure CO2 electrolysis without Ni oxidation and carbon deposition is achieved in Ni-based cathode supported SOECs.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Nanoscience & Nanotechnology
Nicholas Kane, Zheyu Luo, Yucun Zhou, Yong Ding, Alex Weidenbach, Weilin Zhang, Meilin Liu
Summary: Proton-conducting reversible solid oxide cells are a promising technology for efficient conversion between electricity and chemical fuels, making them well-suited for the deployment of renewable energies and load leveling. The bilayer electrolyte design combines a highly conductive electrolyte with a highly stable protection layer, enhancing chemical stability while maintaining high electrochemical performance.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Zhe Zhao, Shuai Tang, Zhongbo Liu, Longsheng Cao, Mojie Cheng, Zhigang Shao
Summary: Efficient and durable solid oxide steam electrolysis was achieved by constructing an active La0.8Sr0.2CoO3-$/Gd0.2Ce0.8O2-$ heterointerface in the air electrode using a simple co-impregnation method. The resulting hetero-structured air electrode exhibited outstanding activity for the oxygen evolution reaction, with an exchange current density 69 times higher than that of the traditional LSM-YSZ. The heterostructured cell demonstrated excellent long-term stability for steam electrolysis operation and durability for charge-discharge cycles.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Zhitong Wang, Yansong Zhou, Dongyu Liu, Ruijuan Qi, Chenfeng Xia, Mingtao Li, Bo You, Bao Yu Xia
Summary: In this study, a carbon-confined indium oxide electrocatalyst was developed for stable and efficient CO2 reduction. The research shows that carbon protection can prevent the oxidation of indium and enhance the selectivity and activity of the reaction towards CO2 reduction.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Chemical
Chunlai Dong, Fukuan Jiang, Lei Yang, Canglong Wang, Kui Xie
Summary: In this study, high-efficiency electrochemical reforming of CO2 and CH4 into syngas was achieved by constructing metal-oxide interfaces in solid oxide electrolysis cells (SOECs). The exsolved metal-oxide interfaces demonstrated improved activity and stability, enabling the conversion of CO2 and CH4 to syngas for more than 70 hours and 7 redox cycles.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Miaosen Yang, Shuai Liu, Jiaqiang Sun, Mengmeng Jin, Rao Fu, Shusheng Zhang, Hongyi Li, Zhiyong Sun, Jun Luo, Xijun Liu
Summary: The study presents atomically dispersed Bi clusters supported on hollow carbon spheres as an effective electrocatalyst for reducing CO2 to formate with high faradaic efficiency and durability. The Zn-CO2 battery utilizing this catalyst achieves a peak power density and impressive cycle rechargeability, providing a promising alternative for CO2 utilization and energy storage.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Thermodynamics
Duncan A. Nowicki, Gerry D. Agnew, John T. S. Irvine
Summary: This article presents a conceptual design for a small-scale green ammonia plant, where ammonia synthesis is achieved by reacting hydrogen produced by a solid oxide electrolyzer with nitrogen purified from air using a series of solid electrolyte oxygen pumps. The system operates with an energetic efficiency of 52.12%, which is very close to a cryogenic ASU reference system achieving an efficiency of 52.89%. The specific energy consumption is 9.94 kWh/kgNH3. Although these results are promising, there are opportunities to further improve the system design, such as enhancing heat integration to utilize waste heat from the series of oxygen pumps for raising the steam required by the electrolyzer.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Review
Chemistry, Physical
Saheli Biswas, Gurpreet Kaur, Gary Paul, Sarbjit Giddey
Summary: The major technologies for green hydrogen production are PEM and SOE. While PEM technology is being commercialized at MW scale, SOE technology is still under development at kW scale and higher costs. SOE has the potential to reduce energy input by up to 30% for hydrogen production by utilizing low-cost thermal energy. The search for alternative cathode materials for SOE is ongoing, and nanoengineered materials synthesized using infiltration and exsolution techniques show promise. Techno-economic analysis is required for the commercialization of these materials in SOE.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Thermodynamics
Abdullah A. AlZahrani, Ibrahim Dincer
Summary: Solid oxide electrolysis is an efficient and sustainable method for hydrogen production from water, but the high operating temperature poses a challenge due to increased degradation rate. This study investigates the performance and microstructure of a novel thin-electrolyte solid oxide cell under high steam to hydrogen ratios.
Article
Energy & Fuels
Vaibhav Vibhu, Izaak C. Vinke, Ruediger-A. Eichel, L. G. J. (Bert) de Haart
Summary: In this study, Ni-free LSM-based perovskite oxides were considered as alternative fuel electrodes to address the severe degradation of conventional Ni-YSZ fuel electrodes. The properties of LSM were analyzed and electrolyte-supported single cells were fabricated for electrochemical performance evaluation. The results showed that the cell performance of LSM and LSM + GDC fuel electrodes was superior to that of LSM + YSZ fuel electrodes.
Article
Engineering, Chemical
Asif Mahmood, Saira Bano, Ji Haeng Yu, Kew-Ho Lee
JOURNAL OF MEMBRANE SCIENCE
(2015)
Article
Chemistry, Physical
Saira Bano, Asif Mahmood, Seong-Joong Kim, Kew-Ho Lee
JOURNAL OF MATERIALS CHEMISTRY A
(2015)
Article
Polymer Science
Seong-Joong Kim, Pyung-Soo Lee, Saira Bano, You-In Park, Seung-Eun Nam, Kew-Ho Lee
JOURNAL OF APPLIED POLYMER SCIENCE
(2016)
Article
Engineering, Chemical
Saira Bano, Asif Mahmood, Kew-Ho Lee
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2013)
Article
Engineering, Chemical
Saira Bano, Asif Mahmood, Seong Joong Kim, Kew-Ho Lee
SEPARATION AND PURIFICATION TECHNOLOGY
(2014)
Article
Chemistry, Multidisciplinary
Asif Mahmood, Saira Bano, Ji Haeng Yu, Kew-Ho Lee
JOURNAL OF CO2 UTILIZATION
(2019)
Article
Green & Sustainable Science & Technology
Muhammad Yousaf, Asif Mahmood, Ali Elkamel, Muhammad Rizwan, Muhammad Zaman
Summary: Carbon capture and sequestration (CCS) has the potential to mitigate global climate change. Integrating a high temperature solid oxide electrolyzer (SOE) with the CO2 hydrogenation process can reduce the cost of methanol production. Further cost reduction in methanol production is possible with advancements in hydrogen production technology, such as high performance materials development and commercialization of electrolyzers.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Review
Energy & Fuels
Muhammad Yousaf, Muhammad Zaman, Asif Mahmood, Muhammad Imran, Ali Elkamel, Muhammad Rizwan, Tabbi Wilberforce, Fahid Riaz
Summary: This review presents the current state of CO2 utilization processes and explores how the technical, economic, and environmental feasibility of these processes can be improved through the use of PSE tools and techniques. The article provides tabulated data and critically analyzes the information.
ENERGY SCIENCE & ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Awais Nisar, Sajid Iqbal, Muhammad Atiq Ur Rehman, Asif Mahmood, Muhammad Younas, Syed Zahid Hussain, Qanita Tayyaba, Attaullah Shah
Summary: Hydroxyapatite-based cerium-doped ceramics (Ce-HAp) were synthesized and investigated for their mechanical and dielectric properties. The crystal structure was studied using XRD and FTIR techniques, and the elemental composition of doped Ce ions was analyzed using ICP-OES and EDX. The results showed enhanced mechanical properties and improved electrical network formation in Ce-doped samples, suggesting the potential application of these composites in bone healing and bone growth. Ion release tests demonstrated the stability of Ce, H+, and OH- ions in the fabricated pellets, indicating the suitability of Ce-HAp ceramics for biomedical use.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Green & Sustainable Science & Technology
Yusra Muazzam, Muhammad Yousaf, Muhammad Zaman, Ali Elkamel, Asif Mahmood, Muhammad Rizwan, Muhammad Adnan
Summary: The aim of this study was to investigate the techno-economic aspects of converting CO2 to methanol and then to dimethyl ether. The cost of hydrogen production was found to be the major contributing factor in methanol production, with alkaline water electrolysis being the most expensive and solid oxide electrolysis being the least expensive method. However, the proton exchange membrane process operated at a lower temperature, resulting in fewer operational issues.
Article
Thermodynamics
Yong Cheng, Fukai Song, Lei Fu, Saishuai Dai, Zhiming Yuan, Atilla Incecik
Summary: This paper investigates the accessibility of wave energy absorption by a dual-pontoon floating breakwater integrated with hybrid-type wave energy converters (WECs) and proposes a hydraulic-pneumatic complementary energy extraction method. The performance of the system is validated through experiments and comparative analysis.
Article
Thermodynamics
Jing Gao, Chao Wang, Zhanwu Wang, Jin Lin, Runkai Zhang, Xin Wu, Guangyin Xu, Zhenfeng Wang
Summary: This study aims to establish a new integrated method for biomass cogeneration project site selection, with a focus on the application of the model in Henan Province. By integrating Geographic Information System and Multiple Criterion Decision Making methods, the study conducts site selection in two stages, providing a theoretical reference for the construction of biomass cogeneration projects.
Article
Thermodynamics
Mert Temiz, Ibrahim Dincer
Summary: The current study presents a hybrid small modular nuclear reactor and solar-based system for sustainable communities, integrating floating and bifacial photovoltaic arrays with a small modular reactor. The system efficiently generates power, hydrogen, ammonia, freshwater, and heat for residential, agricultural, and aquaculture facilities. Thermodynamic analysis shows high energy and exergy efficiencies, as well as large-scale ammonia production meeting the needs of metropolitan areas. The hybridization of nuclear and solar technologies offers advantages of reliability, environmental friendliness, and cost efficiency compared to renewable-alone and fossil-based systems.
Editorial Material
Thermodynamics
Wojciech Stanek, Wojciech Adamczyk
Article
Thermodynamics
Desheng Xu, Yanfeng Li, Tianmei Du, Hua Zhong, Youbo Huang, Lei Li, Xiangling Duanmu
Summary: This study investigates the optimization of hybrid mechanical-natural ventilation for smoke control in complex metro stations. The results show that atrium fires are more significantly impacted by outdoor temperature variations compared to concourse/platform fires. The gathered high-temperature smoke inside the atrium can reach up to 900 K under a 5 MW train fire energy release. The findings provide crucial engineering insights into integrating weather data and adaptable ventilation protocols for smoke prevention/mitigation.
Article
Thermodynamics
Da Guo, Heping Xie, Mingzhong Gao, Jianan Li, Zhiqiang He, Ling Chen, Cong Li, Le Zhao, Dingming Wang, Yiwei Zhang, Xin Fang, Guikang Liu, Zhongya Zhou, Lin Dai
Summary: This study proposes a new in-situ pressure-preserved coring tool and elaborates its pressure-preserving mechanism. The experimental and field test results demonstrate that this tool has a high pressure-preservation capability and can maintain a stable pressure in deep wells. This study provides a theoretical framework and design standards for the development of similar technologies.
Article
Thermodynamics
Aolin Lai, Qunwei Wang
Summary: This study assesses the impact of China's de-capacity policy on renewable energy development efficiency (REDE) using the Global-MSBM model and the difference-in-differences method. The findings indicate that the policy significantly enhances REDE, promoting technological advancements and marketization. Moreover, regions with stricter environmental regulations experience a higher impact.
Article
Thermodynamics
Mostafa Ghasemi, Hegazy Rezk
Summary: This study utilizes fuzzy modeling and optimization to enhance the performance of microbial fuel cells (MFCs). By simulating and analyzing experimental data sets, the ideal parameter values for increasing power density, COD elimination, and coulombic efficiency were determined. The results demonstrate that the fuzzy model and optimization methods can significantly improve the performance of MFCs.
Article
Thermodynamics
Zhang Ruan, Lianzhong Huang, Kai Wang, Ranqi Ma, Zhongyi Wang, Rui Zhang, Haoyang Zhao, Cong Wang
Summary: This paper proposes a grey box model for fuel consumption prediction of wing-diesel hybrid vessels based on feature construction. By using both parallel and series grey box modeling methods and six machine learning algorithms, twelve combinations of prediction models are established. A feature construction method based on the aerodynamic performance of the wing and the energy relationship of the hybrid system is introduced. The best combination is obtained by considering the root mean square error, and it shows improved accuracy compared to the white box model. The proposed grey box model can accurately predict the daily fuel consumption of wing-diesel hybrid vessels, contributing to operational optimization and the greenization and decarbonization of the shipping industry.
Article
Thermodynamics
Huayi Chang, Nico Heerink, Junbiao Zhang, Ke He
Summary: This study examines the interaction between off-farm employment decisions between couples and household clean energy consumption in rural China, and finds that two-paycheck households are more likely to consume clean energy. The off-farm employment of women is a key factor driving household clean energy consumption to a higher level, with wage-employed wives having a stronger influence on these decisions than self-employed ones.
Article
Thermodynamics
Hanguan Wen, Xiufeng Liu, Ming Yang, Bo Lei, Xu Cheng, Zhe Chen
Summary: Demand-side management is crucial to smart energy systems. This paper proposes a data-driven approach to understand the relationship between energy consumption patterns and household characteristics for better DSM services. The proposed method uses a clustering algorithm to generate optimal customer groups for DSM and a deep learning model for training. The model can predict the possibility of DSM membership for a given household. The results demonstrate the usefulness of weekly energy consumption data and household socio-demographic information for distinguishing consumer groups and the potential for targeted DSM strategies.
Article
Thermodynamics
Xinglan Hou, Xiuping Zhong, Shuaishuai Nie, Yafei Wang, Guigang Tu, Yingrui Ma, Kunyan Liu, Chen Chen
Summary: This study explores the feasibility of utilizing a multi-level horizontal branch well heat recovery system in the Qiabuqia geothermal field. The research systematically investigates the effects of various engineering parameters on production temperature, establishes mathematical models to describe their relationships, and evaluates the economic viability of the system. The findings demonstrate the significant economic feasibility of the multi-level branch well system.
Article
Thermodynamics
Longxin Zhang, Songtao Wang, Site Hu
Summary: This investigation reveals the influence of tip leakage flow on the modern transonic rotor and finds that the increase of tip clearance size leads to a decline in rotor performance. However, an optimal tip clearance size can extend the rotor's stall margin.
Article
Thermodynamics
Kristian Gjoka, Behzad Rismanchi, Robert H. Crawford
Summary: This paper proposes a framework for assessing the performance of 5GDHC systems and demonstrates it through a case study in a university campus in Melbourne, Australia. The results show that 5GDHC systems are a cost-effective and environmentally viable solution in mild climates, and their successful implementation in Australia can create new market opportunities and potential adoption in other countries with similar climatic conditions.
Article
Thermodynamics
Jianwei Li, Guotai Wang, Panpan Yang, Yongshuang Wen, Leian Zhang, Rujun Song, Chengwei Hou
Summary: This study proposes an orientation-adaptive electromagnetic energy harvester by introducing a rotatable bluff body, which allows for self-regulation to cater for changing wind flow direction. Experimental results show that the output power of the energy harvester can be greatly enhanced with increased rotatory inertia of the rotating bluff body, providing a promising solution for harnessing wind-induced vibration energy.
