Article
Energy & Fuels
Qidong Xu, Lingchao Xia, Qijiao He, Zengjia Guo, Meng Ni
Summary: A 2D model was developed to simulate heat and mass transfer processes in methanol-fuelled SOFC, with parametric simulations conducted to investigate the effects of various factors on SOFC performance. The study found that the peak power density of methanol-fuelled SOFC can be high, but the temperature distribution is significantly affected by the working conditions.
Article
Energy & Fuels
Ben Ge, Panpan Zhang, Zeyang Wang, Junjie Zhou, Zhaowen Wang, Yi Guo, Zhibin Yang
Summary: By doping Nb and Sr in LaFeO3, the performance of the fuel electrode in Solid Oxide Electrolysis Cell (SOEC) is improved. LSFN exhibits excellent stability and high performance as a fuel electrode, achieving high current density at different compositions and temperatures. LSFN is a highly efficient and stable fuel electrode for SOEC applications.
Article
Chemistry, Physical
Chengqiao Xi, Junkang Sang, Anqi Wu, Jun Yang, Xiaopeng Qi, Wanbing Guan, Jianxin Wang, Subhash C. Singhal
Summary: In this study, the co-electrolysis of H2O and CO2 using a flat-tube SOEC was investigated. The researchers found that increasing temperature and water content in the fuel gas improved the electrochemical performance of the SOEC. The co-electrolysis process remained stable for over 1000 hours at 750 degrees C with a constant current density of 300 mA cm(-2). The degradation mechanism of the SOEC was analyzed and discussed based on the observed microstructural changes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
Changkun Hao, Bingguo Zhao, Abdellah Essaghouri, Yuping Qian, Weilin Zhuge, Yangjun Zhang, Zezhi Zeng
Summary: In this study, a reduced-order electrochemical model is developed to predict the temperature distributions in a kilowatt-class tubular solid oxide fuel cell stack. The model can express the current density as a function of operating potential, concentration, and temperature, reducing the computational cost. The study also finds that flow characteristics affect the temperature uniformity among cells in the stack.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Yu Han, Meiting Guo, Anwei Sun, Hongwei Liu, Gang Xiao, Yi Sun, Meng Ni, Haoran Xu
Summary: The use of metal foam can significantly enhance the heat transfer process and achieve an even temperature distribution in the CA-SOEC, thus reducing thermal stress. The results provide useful information for the structure optimization of solid oxide cells using carbon fuels.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Chemistry, Physical
Jie Zhang, Lingting Ye, Kui Xie
Summary: This study demonstrates the potential application of electrochemical ethane oxidative dehydrogenation by preparing metal oxide materials and forming metal-oxide interfaces. The current density reaches 0.51 A cm-2 at 700°C, 1.0V and the ethane conversion rate is 38.9% with the ethylene yield of 24.9%.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Chemistry, Applied
Ximeng Lv, Menghuan Chen, Zhaolong Xie, Linping Qian, Lijuan Zhang, Gengfeng Zheng
Summary: Stimulated by environmental awareness and renewable energy utilization, fuel cell and electrolyzer technologies have become important in energy storage and conversion. Solid oxide electrolysis cells (SOECs) have advantages of high energy efficiency and poisoning resistance in C1 molecule electrochemical conversion. This review presents the latest technologies and research on SOEC-based techniques for C1 molecule electrochemical conversion, and discusses the challenges and prospects.
CHINESE JOURNAL OF CATALYSIS
(2022)
Article
Materials Science, Multidisciplinary
In -Ho Kim, Dae-Kwang Lim, Yeon Namgung, Hohan Bae, Jun-Young Park, Sun-Ju Song
Summary: In this study, the electrochemical and transport properties of a perovskite-type proton conductor BZCYYb5311 were evaluated. The material showed high proton conductivity and exceptional chemical stability. It exhibited a proton conductivity of 98% compared to ionic conductivity at 600°C. The maximum power density in fuel cell mode and current density in electrolysis mode were calculated, indicating the potential of BZCYYb5311 as a fuel cell material.
Article
Chemistry, Multidisciplinary
Hyeongmin Yu, Ha-Ni Im, Kang Taek Lee
Summary: This study reports the fabrication of a highly conductive, ultra-thin, and defect-free Sm0.075Nd0.075Ce0.85O2-delta (SNDC) interlayer via gelatin-assisted deposition, which improves the performance of solid oxide electrochemical cells (SOCs). The SOC with the gelatin-derived SNDC interlayer shows exceptionally high electrochemical performances and excellent long-term durability at 750 degrees C. Mechanistic analysis reveals that the SNDC interlayer provides a faster route for oxygen-ion conduction and more active sites for reactions at the oxygen electrode/electrolyte interface.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Xiufu Sun, Yuliang Liu, Peter Vang Hendriksen, Ming Chen
Summary: The study tested three cells under different conditions to mimic gas flow series or parallel arrangements, finding that a gas-flow series arrangement led to reduced cell degradation by reducing the overall cell voltage degradation rate. This was attributed to the milder conditions and reduced polarization in the gas flow series case compared to the parallel flow case.
JOURNAL OF POWER SOURCES
(2021)
Article
Energy & Fuels
Zhengpeng Chen, Jiajia Wang, Mingfei Li, Jiangbo Dong, Renci Xu, Jinsong Cheng, Kai Xiong, Mumin Rao, Chuangting Chen, Chenjin Shen, Xiaowei Li, Yihan Ling
Summary: The development of CO2 electrolysis using symmetric solid oxide electrolytic cells requires the identification of electrode materials with high catalytic activity and stability. In this study, a high entropy perovskite electrode material LPSSCFN was designed and synthesized, which exhibited higher stability and chemical compatibility in the CO2 atmosphere compared to SSFN. Symmetric cells with LPSSCFN-GDC electrode showed higher electrolytic current density and excellent long-term stability compared to those with SSFN-GDC electrode.
Article
Chemistry, Physical
Emir Dogdibegovic, Sergio Ibanez, Anila Wallace, David Kopechek, Gene Arkenberg, Scott Swartz, John M. Funk, Michael Reisert, Muhammad Anisur Rahman, Ashish Aphale, Prabhakar Singh, Hanping Ding, Wei Tang, Michael Glazoff, Dong Ding, Theis L. Skafte, Michael C. Tucker
Summary: In this study, a Mn,Co-based oxide coating was applied to stainless steel interconnects and evaluated for use in solid oxide electrolyzer stacks. The experimental results showed that the coating significantly reduced the oxidation and Cr evaporation rates of the stainless steel, thereby improving the stack lifetime and degradation rate.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Hyeongmin Yu, Incheol Jeong, Seungsoo Jang, Doyeub Kim, Ha-Ni Im, Chan-Woo Lee, Eric D. Wachsman, Kang Taek Lee
Summary: This study proposes a novel approach for developing high-performance low-temperature SOCs by using an Er, Y, and Zr triple-doped bismuth oxide (EYZB). The EYZB exhibits significantly higher ionic conductivity compared to commercial electrolytes and shows excellent stability. By incorporating EYZB in the composite electrodes and bilayer electrolytes, the zirconia-based LT-SOC achieves unprecedentedly high performance in both fuel cell and electrolysis cell modes. The digital twinning technique reveals a distinctive microstructural feature of EYZB that extends the triple phase boundary at the interface.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Peihan Li, Xingyu Chen, Yifei Sun, Ting Chen, Bo Zhang, Fugen Li, Juan Zhou, Shaorong Wang
Summary: This paper investigates an anode-supported SOEC produced via multi-layer organic co-tape casting with co-sintering process for high temperature steam electrolysis, carbon dioxide electrolysis, and co-electrolysis. The anode-supported structure reduces ohmic resistance and the LSCM cathode exhibits good catalytic performance.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Tianjun Liao, Yawen Dai, Chun Cheng, Qijiao He, Zheng Li, Meng Ni
Summary: This study introduces a novel hybrid system coupling SOFC with TR and PV cells, and evaluates and optimizes its performance using theories of electrochemistry, Planck radiative heat transfer, and the first law of thermodynamics. The research shows that decreasing the leakage resistance of the SOFC can enhance electricity production and efficiency of the hybrid system.
JOURNAL OF POWER SOURCES
(2021)
Review
Chemistry, Multidisciplinary
Tong Liu, Siyuan Zhao, Qi Xiong, Jie Yu, Jian Wang, Gang Huang, Meng Ni, Xinbo Zhang
Summary: Lithium-air batteries, with their high energy density, have made rapid progress in recent years. The reversibility of discharge products plays a crucial role in battery performance. Besides lithium peroxide, other discharge products such as lithium hydroxide, lithium superoxide, lithium oxide, and lithium carbonate have been investigated, bringing breakthroughs for Li-air battery technologies. The systematic review of recent advances in understanding the electrochemical reactions and conversions of discharge products provides insights into the fundamental development and future applications of Li-air batteries.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Siyuan Zhao, Tong Liu, Yawen Dai, Jian Wang, Yang Wang, Zengjia Guo, Jie Yu, Idris Temitope Bello, Meng Ni
Summary: Introducing potassium iodide (KI) to Zn-air batteries can change the oxidation pathway and improve the energy efficiency and cycle life. The study shows that a carbon-based catalyst Pt/C with poor OER activity exhibits remarkable IOR activity, leading to a low charging voltage and high energy efficiency in the fabricated batteries.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Shikun Zhou, Gongnan Xie, Haibao Hu, Meng Ni
Summary: Proton exchange membrane fuel cells (PEMFCs) are clean and efficient power sources. The proposed new gas diffusion layer (GDL) with non-uniform distribution of PTFE effectively removes water from the catalyst layer (CL), improving fuel cell performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Meiting Guo, Dongqi Zhao, Qidong Xu, Zheng Li, Haoran Xu, Meng Ni
Summary: In this study, a three-dimensional electro-thermomechanical coupled model is established to investigate the influence of interconnector (IC) structure on the electrical performance and mechanical stability of solid oxide fuel cells (SOFCs). The results show that IC design with discrete ribs can enhance the maximum power density without significantly affecting the stress on the electrodes. The stress distribution is primarily determined by the geometrical structure of the IC. Discrete cylindrical ribs and discrete cubic ribs with rounded corners are better choices for balancing electrical power output and mechanical stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Zheng Li, Chen Wang, Idris Temitope Bello, Meiting Guo, Na Yu, Meng Zhu, Meng Ni
Summary: Ammonia is an efficient energy carrier for protonic ceramic fuel cells (PCFCs) operating at intermediate temperatures. A new model for NH3-PCFC is developed, considering reaction kinetics and charge transport in the anode and electrolyte. The study finds that operating potential should be minimized to reduce current leakage, and slowing down electron transport improves Faraday efficiency. Chemical reactions and temperature distribution also significantly impact cell performance. Introducing H2 and increasing nitrogen desorption can improve or decrease performance, respectively.
JOURNAL OF POWER SOURCES
(2023)
Article
Thermodynamics
Zengjia Guo, Yang Wang, Siyuan Zhao, Tianshou Zhao, Meng Ni
Summary: In this research, a novel model is developed to design and optimize battery thermal management systems (BTMSs) considering electrochemistry, battery aging, and heat transfer. The study compares the multiphysics behaviors of BTMSs in different working cycles and finds that SEI formation inside the aged battery pack leads to higher heat generation rate, causing BTMSs to fail in controlling battery temperature after 1000 cycles. The BTMS with water demonstrates the best performance in cooling, controlling SEI formation and capacity fade, and shows the lowest pressure loss.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Chemistry, Physical
Keqing Zheng, Yangtian Yan, Ya Sun, Jun Yang, Meng Zhu, Meng Ni, Li Li
Summary: Solid oxide fuel cell (SOFC) is an efficient and low-emission electrochemical device for power generation. Ammonia, a low-cost and carbon-free hydrogen carrier, can be directly used as fuel for SOFC. This paper focuses on the design of NH3-SOFC anode for efficient and stable utilization of ammonia, and presents empirical correlations of the decomposition rate of NH3 over different catalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Idris Temitope Bello, Yufei Song, Na Yu, Zheng Li, Siyuan Zhao, Adeleke Maradesa, Tong Liu, Zongping Shao, Meng Ni
Summary: In this study, we developed a thermodynamically stable self-ordered nanocomposite cathode material, BaCo0.5Ce0.3Fe0.1Yb0.1O3-delta (BCCFYb), which demonstrated good operational stability and superior cathodic performance in both oxygen ion- and proton-conducting ceramic fuel cells (CFCs) modes. Compared to other traditional composite materials, BCCFYb exhibited a low thermal expansion coefficient (TEC) and showed promising potential as a cathode material for CFCs.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Chen Wang, Zheng Li, Siyuan Zhao, Lingchao Xia, Meng Zhu, Minfang Han, Meng Ni
Summary: In this study, a novel reactor model is developed to combine PCEC electrolysis for hydrogen production and CO2 recycling for methanol synthesis. The problem of temperature mismatch between PCEC and methanol synthesis is solved by supplying low-temperature gas intermediately, allowing for the direct synthesis of methanol. The effects of key operating parameters on methanol production and temperature distribution are investigated, providing insights for efficient and long-term operation of the coupled system.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Yu-Jia Zhang, Qiang Ye, Meng Ni
Summary: Controlling the hydrogen evolution reaction and electrolyte flow rate, the impact of mA/cm2 scale HER on the relative permeability of HCl-based aqueous electrolyte in a carbon felt electrode is explored. Experimental results show that the HER reduces the flow permeability, even at high electrolyte flow velocity.
JOURNAL OF POWER SOURCES
(2023)
Article
Multidisciplinary Sciences
Yang Wang, Chengru Wu, Siyuan Zhao, Zengjia Guo, Minfang Han, Tianshou Zhao, Bingfeng Zu, Qing Du, Meng Ni, Kui Jiao
Summary: Solid oxide electrochemical cells (SOCs) have potential in renewable energy storage and conversion systems, but further breakthroughs are needed for commercialization. A data-driven powder-to-power framework is proposed to accurately predict performance and optimize electrode parameters. The framework elucidates the correlation between microstructural parameters and electrode durability, and a practical optimization strategy is proposed. By implementing this framework, the degradation rate of Ni-based electrodes can be significantly reduced.
Article
Green & Sustainable Science & Technology
Kuiwu Lin, Heping Xie, Qilian Peng, Yuan Zhang, Suling Shen, Yunhong Jiang, Meng Ni, Bin Chen
Summary: The conventional method of hydrogen production using fossil fuels conflicts with the objective of renewable and sustainable energy system. Offshore wind/solar-powered seawater splitting for hydrogen production shows promise as a solution for coupling renewable energy. However, the durability of direct seawater splitting is currently an issue due to anodic chloride corrosion. To solve this issue, a novel seawater electrolysis system integrating a flow-electrode capacitive deionization unit with a robust alkaline water electrolyzer is presented. This system achieves durable operation for 100 hours and provides a practical solution for large-scale seawater splitting.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Green & Sustainable Science & Technology
Bowen Wang, Meng Ni, Shiye Zhang, Zhi Liu, Shangfeng Jiang, Longhai Zhang, Feikun Zhou, Kui Jiao
Summary: A two-phase analytical PEME model incorporating the liquid saturation jump effect was developed in this study, and intelligent parameter estimation using a genetic algorithm was proposed for model validation. The results proved the effectiveness of the proposed intelligent parameter estimation using in-house experiments and experimental results from previous studies. Simulation results showed that increasing the ACL porosity, decreasing permeability and thickness of the ACL can increase the limiting current density within the investigated range. Additionally, increasing the cathode pressure and membrane permeability benefits water management inside the PEME and increases the limiting current density.
Article
Energy & Fuels
Chen Wang, Zheng Li, Daqin Guan, Meng Zhu, Idris Temitope Bello, Minfang Han, Meng Ni
Summary: A 2D multi-physics model is developed to study the glycerol-assisted SOEC co-electrolysis process and a novel in-tube reformer to improve fuel utilization and reduce temperature difference. The effects of key operating parameters on the system's performance and temperature distribution are investigated. The study shows that glycerol assistance can significantly reduce the operating voltage and increase the co-electrolysis process efficiency.
Article
Construction & Building Technology
Mohammad Nyme Uddin, Minhyun Lee, Meng Ni
Summary: This study examines the socio-demographic factors that influence occupants' thermal comfort and sensation in low-income residential homes. The results show that female occupants are less satisfied with their thermal environment compared to male occupants. However, age and home ownership do not have an influence on occupant thermal comfort. Agent-based modeling is also used to support the statistical analysis, showing better thermal comfort and sensation for male occupants.
BUILDING AND ENVIRONMENT
(2023)
