Article
Chemistry, Multidisciplinary
Hua Tong, Wenjing Hu, Min Fu, Chunli Yang, Zetian Tao
Summary: Nickel-doped barium ferrate with triple conducting ability is developed as cathodes for proton-conducting solid oxide fuel cells (H-SOFCs), showing impressive electrochemical performance at intermediate temperatures. The high electrocatalytic capacity of the nickel-doped barium ferrate cathode is attributed to its significant proton conductivity, which is enhanced by the presence of nickel and the regulated composition and structure of the composite cathode.
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, Physical
Yongji Gao, Mingming Zhang, Lele Fan, Zetian Tao
Summary: Recent findings have shown that the utilization of a novel composite cathode, consisting of LSCF and LNCOx, can significantly enhance the performance of proton-conducting solid oxide fuel cells. The novel composite cathode exhibits improved catalytic activity and durability, achieving a maximum power density of 1283 mW cm-2.
JOURNAL OF POWER SOURCES
(2023)
Review
Chemistry, Physical
Idris Temitope Bello, Shuo Zhai, Siyuan Zhao, Zheng Li, Na Yu, Meng Ni
Summary: Proton-conducting solid oxide fuel cells (P-SOFCs) show great potential for energy conversion with high efficiency and temperature adaptability, but research and development in this field are still limited globally.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Chemical
Min Fu, Kailin Li, Yang Yang, Qiaoling Zeng, Long Zeng, Zetian Tao
Summary: The new composite cathode material consisting of LaNi0.6Fe0.4O3-δ (LNF) and Sm0.5Sr0.5CoO3-δ (SSC), namely LNF-SSC73, shows promising electrochemical performance in proton-conducting solid oxide fuel cells, indicating its potential for improving fuel cell performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Xuan Yang, Xi Xu, Shuai Wu, Shoufu Yu, Lei Bi
Summary: Zn-doping can enhance the hydration and proton diffusion ability of La2NiO4+x, making it a suitable cathode material for proton-conducting solid oxide fuel cells (H-SOFCs).
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Keyou Shi, Yanru Yin, Zengming Tang, Shoufu Yu, Qiucai Zhang
Summary: A slight deficiency of Ba in BaCoO3 improves its chemical stability, protonation, and surface catalytic activity, resulting in enhanced fuel cell performance.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Ziye Zhang, Deti Xie, Jiupai Ni, Chengsheng Ni
Summary: BYC is a prototypical superconducting oxide with a superior mixed electronic and ionic conductivity, and Fe doping can enhance its electrochemical performance and power output.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Lele Wang, Yueyuan Gu, Hailu Dai, Yanru Yin, Lei Bi
Summary: BaSrInFeO5 (BSIF) is a new cathode material designed for proton-conducting solid oxide fuel cells (SOFCs) by modifying the Ba2In2O5 proton conductor with Sr and Fe cations. Sr doping improves the chemical stability, formation of oxygen vacancies, and proton mobility of the material. Experimental studies and first-principles calculations demonstrate that an H-SOFC using the BSIF cathode achieves a high peak power density of 1192 mW cm-2 at 700 oC, surpassing previous reports. This study suggests that derived cathode materials from less-studied Ba2In2O5 could offer new material selections for H-SOFCs.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Muhammad Bilal Hanif, Sajid Rauf, Michal Mosialek, Kashif Khan, Vilma Kavaliuk, Algimantas Kezionis, Tomas Salkus, Jacek Gurgul, Dmitry Medvedev, Malgorzata Zimowska, Dominika Madej, Martin Motola
Summary: This study prepared single-phase BaCe0.9-xMoxY0.1O3-delta electrolyte via sol-gel method and investigated its structure, composition, electrochemical performance, and thermal stability. The conductivity of the grain interior and boundaries between 127 and 727 degrees C was reported for the first time in SOFC studies.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Multidisciplinary
Xuan Yang, Yanru Yin, Shoufu Yu, Lei Bi
Summary: The BSCF+Co3O4 composite material is found to be a promising cathode for H-SOFCs, offering a solution to the thermal mismatch problem between the cathode and electrolyte. The addition of Co3O4 enhances the contact between the BSCF cathode and the electrolyte and also improves the catalytic activity of the cathode, resulting in significantly improved performance for H-SOFCs.
SCIENCE CHINA-MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yufeng Li, Shoufu Yu, Hailu Dai, Yangsen Xu, Lei Bi
Summary: In this study, Sr-doped LaMnO3 (LSM) is coated with TiO2 to create the LSM + TiO2 cathode. It is found that TiO2 modifies the electronic structure at the LSM/TiO2 interface, allowing for charge accumulation and enhanced oxygen diffusion ability. Using LSM + TiO2 as a cathode for proton-conducting SOFCs operating at intermediate temperatures, the fuel cell demonstrates enhanced cell output performance and achieves the highest reported value for H-SOFCs with LSM cathodes.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Physical
Shuai Wu, Yinhua Liu, Chao Wang, Hailu Dai, Xianfen Wang, Lei Bi
Summary: The performance of LaNi0.5Fe0.5O3-delta material for H-SOFCs has been improved through a Zn-doping strategy, resulting in higher peak power density and lower polarization resistance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Green & Sustainable Science & Technology
Xiuqing Lv, Huili Chen, Wei Zhou, Si-Dian Li, Fangqin Cheng, Zongping Shao
Summary: In this study, the issue of CO2 poisoning in SrCoO3-delta 5-based materials was addressed by co-doping iron, zirconium, and yttrium. The newly formed material, SCFZY, exhibited significant CO2-tolerance as a cathode for solid oxide fuel cells (SOFCs), along with high power density and good durability.
Article
Chemistry, Physical
Xi Xu, Yangsen Xu, Jinming Ma, Yanru Yin, Marco Fronzi, Xianfen Wang, Lei Bi
Summary: The study demonstrates that tailoring the electronic structure of perovskite oxide with Mo-doping leads to improvements in cathode materials for proton-conducting solid oxide fuel cells. The Mo-doping changes the electronic structure of the oxide, making the metal-oxygen bond less strong and the surface more active towards oxygen reduction, resulting in more feasible oxygen vacancy formation critical for protonation. The electric field induced by Mo-doping provides an additional driving force for proton movement, accelerating proton migration in the oxide and improving cathode performance.
JOURNAL OF POWER SOURCES
(2021)
Article
Thermodynamics
Shuzhi Zhang, Chen Zhang, Shiyong Jiang, Xiongwen Zhang
Summary: In this paper, a comparative study of different adaptive extended Kalman filters (AEKFs)/adaptive unscented Kalman filters (AUKFs) is conducted to achieve more precise and reliable lithium-ion battery state-of-charge (SOC) estimation. A novel multi-objective analysis decision method is proposed to allocate weights for various extracted indexes and further compare the comprehensive estimation performance of different AEKFs/AUKFs. The results provide suggestions and guidance for researchers when choosing AEKFs/AUKFs for online SOC estimation.
Article
Energy & Fuels
Chen Zhang, Shiyong Jiang, Xiongwen Zhang
Summary: Building-integrated photovoltaic energy system with demand response has the potential to improve energy consumption and reduce costs by adjusting load scheduling to match peak solar radiation, increasing direct consumption of photovoltaic generation and reducing battery usage.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Shuzhi Zhang, Nian Peng, Haibin Lu, Rui Li, Xiongwen Zhang
Summary: This paper presents a systematic and low-complexity multi-state estimation framework for a series-connected lithium-ion battery pack under passive balance control. The framework includes the estimation of pack state-of-charge (SOC), state-of-health (SOH), and cell SOC inconsistencies. The results show that the proposed framework can accurately estimate the battery pack's states and track the cell SOC inconsistencies.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Ganglin Cao, Yaqian Wang, Hongxia Zhang, Qiangqiang Li, Caisun Huang, Xiongwen Zhang, Guojun Li
Summary: This paper proposes a novel energy CPS model that integrates multi-energy systems with cyber-physical systems to meet various energy demands from end-users. By establishing a unified CPS architecture and an embedded dual DSP system, the external control and internal self-control of the energy CPS are realized. The CPS modeling method in MCES is conducted by analyzing multi-class energy nodes. The controllability and interactivity of the designed energy CPS model are demonstrated through the analysis and simulation of a reversible solid oxide fuel cell node and the dynamic operation of MCES.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Lei Fu, Jun Zhou, Qinyuan Deng, Jiaming Yang, Qinghao Li, Zihe Zhu, Kai Wu
Summary: Efficient catalysts for the oxygen evolution reaction (OER) are critical for clean energy conversion and storage. In this study, a new heterostructure electrocatalyst consisting of Sr0.9Ce0.05Fe0.95Ru0.05O3 fibers hybridized with in situ grown RuO2 nanoparticles showed optimized OER activity with low overpotential, attributed to the improved electron transfer and OER kinetics at the heterostructure interface.
Article
Thermodynamics
Ganglin Cao, ShuZhi Zhang, Qiang Zhang, Guoqiang Liu, Xiongwen Zhang, Kuang Yan, Dan Chai
Summary: This paper proposes a novel structure that integrates a cabinet with a vertical falling film heat exchanger in data center to perform natural evaporative cooling, aiming to reduce the energy consumption in data centers. Experimental setup is built to verify the heat and mass transfer characteristics of a falling film, obtaining the mass transfer coefficient 0.05. The heat transfer characteristics of staggered and in-line falling film heat exchangers are compared, showing that the staggered configuration has better heat transfer performance.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Article
Chemistry, Physical
Chengxiang Chen, Zhenyu Wang, Bo Zhang, Zixuan Zhang, Jinying Zhang, Yonghong Cheng, Kai Wu, Jun Zhou
Summary: In this work, a noncontact and spatially resolved method based on Kelvin probe force microscopy (KPFM) was used to investigate the dielectric screening characteristics of black phosphorus (BP) and violet phosphorus (VP) as a function of thickness. The dielectric constants of VP and BP flakes were found to increase monotonically and then saturate to the bulk value, consistent with first-principles calculations. The dielectric screening in VP exhibited a weaker dependence on the number of layers, which could be attributed to strong interlayer coupling resulting from strong electron orbital overlap between adjacent layers of VP.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Energy & Fuels
Xiaoteng Min, Dan Chai, Kunpeng Ding, Rui Li, Xiongwen Zhang
Summary: This paper studied the hydrogen generation from the hydrolysis of solid sodium borohydride. A NiCoP/RC catalyst was prepared to accelerate the hydrolysis process. The hydrogen generation rate, reaction temperature, hydrogen output, and water-hydrogen ratio were recorded. Compared to the commonly used cobalt chloride catalyst, the NiCoP/RC catalyst showed superior catalytic activity. The study also discussed the use of citric acid to neutralize alkaline by-products and proposed intermittent water feeding to improve both hydrogen output and water utilization.
Article
Green & Sustainable Science & Technology
Shuzhi Zhang, Shaojie Wu, Ganglin Cao, Xiongwen Zhang
Summary: This paper presents a method for capacity estimation using a novel health indicator (HI) extracted from partial constant voltage (CV) charging curves. The CV charging curves under different battery aging states can be theoretically described by the same functional form. The coefficient of determination between the original and fitted curves is computed as HI for capacity estimation. A subsequent current prediction method is proposed to ease HI extraction in the case of insufficient data. A moving window-based HI processing method is developed to mitigate the negative influence of current measurement disturbances on capacity estimation accuracy. The proposed method is verified through experimental results.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Biochemistry & Molecular Biology
Qiankai Zhang, Yang Wang, Yonggang Jia, Wenchao Yan, Qinghao Li, Jun Zhou, Kai Wu
Summary: Cation-anion co-doping of CaTiO3 perovskites has been shown to enhance photocatalytic performance. In this study, (La/Ce-N/S) co-doped CaTiO3 models were investigated using first-principles calculations. The results showed that (La-S)-doped CaTiO3 with a doping ratio of 0.25 exhibited superior photocatalytic properties due to its narrow band gap, fast carrier mobility, and strong ability to absorb visible light. The introduction of intermediate energy levels by La and Ce also facilitated electron transition. These findings provide theoretical insights for discovering excellent photocatalytic CaTiO3 perovskites.
Article
Chemistry, Applied
Zhengrong Liu, Jun Zhou, Yueyue Sun, Xiangling Yue, Jiaming Yang, Lei Fu, Qinyuan Deng, Hongfei Zhao, Chaofan Yin, Kai Wu
Summary: In this study, Ni-doped layered perovskite oxides (La4Srn_4)0.9Ti0.9nNi0.1nO3n+2 with different values of n (5, 8, and 12) were investigated as catalysts for CO2 electrolysis. It was found that Ni doping significantly enhanced the electrochemical activity by increasing oxygen vacancies and providing more active sites. The results showed that the activity of the LSTNn cathodes could be manipulated by controlling the n number and Ni exsolution, with LSTN8 demonstrating the highest activity for CO2 electrolysis at 800℃ and 2.0 V.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Lu Gao, Yuqi Chen, Zepeng Lv, Jun Zhou, Kai Wu
Summary: In this study, the charge distribution of the electric double layer (EDL) at the oil-paper interface is probed using Kelvin probe force microscopy (KPFM). It is found that the additive 3-amino-2,4-triazole (ATA) can tune the charge distribution of EDL, leading to a decrease in charge accumulation at the oil-paper interface and an increased charge mobility in oil-paper insulation.
Article
Chemistry, Multidisciplinary
Jun Zhou, Zihe Zhu, Qinghao Li, Qiankai Zhang, Zhengrong Liu, Qinyuan Deng, Zilin Zhou, Cunxin Li, Lei Fu, Jiacheng Zhou, Haonan Li, Kai Wu
Summary: Metal-semiconductor heterostructured catalysts have received great attention for their unique interfacial characteristics and superior catalytic performance. This study presents a simple method for the exsolution of alloying FeNi3 nanoparticles in a metal-semiconductor heterostructure through dielectric blocking discharge plasma. The resulting FeNi3 -CTNF catalyst exhibits outstanding catalytic activity for the photothermal reverse water gas shift reaction, with a significantly higher CO yield and selectivity compared to pure CaTiO3. The superior catalytic activity is attributed to several factors, including the narrow band gap, photogenerated electron migration, and abundant surface oxygen vacancies. This work provides insights into the development of metal-semiconductor heterostructured catalysts for photothermal CO2 reduction.
Article
Chemistry, Multidisciplinary
Lei Fu, Jun Zhou, Zilin Zhou, Bing Xiao, Nithima Khaorapapong, Yunqing Kang, Kai Wu, Yusuke Yamauchi
Summary: Efficient and durable electrocatalysts made from nanosized nonprecious-metal-based materials have gained attention for their potential use in the oxygen evolution reaction (OER). In this study, CoP nanoparticles enclosed within a CoFeP shell (CoP/CoFeP) were fabricated. The CoFeP shell with a mesoporous structure allows for effective mass transport, abundant active sites, and accessibility of the hybrid interfaces between CoP and CoFeP. As a result, the encapsulated CoP/CoFeP nanocubes demonstrate excellent OER catalytic activity, outperforming reference hollow CoFeP nanocubes and commercial RuO2. Experimental characterization and theoretical calculations indicate that the CoP/CoFeP structure with a Fe-doped shell facilitates electronic interactions between CoP and CoFeP, and promotes structural reconstruction, exposing more active sites and enhancing the OER performance. This study aims to inspire further research on nonprecious-metal catalysts with tailored nanostructures and electronic properties for the OER.
Article
Chemistry, Physical
Bo Zhang, Zhenyu Wang, Chengxiang Chen, Mengyue Gu, Jun Zhou, Jinying Zhang
Summary: In this study, the electromechanical behavior of violet phosphorene (vP) nanoflakes was investigated experimentally and theoretically. The results showed that vP exhibited different morphologies and properties under different loads and bias voltages. Theoretical analysis based on specific heat capacity and conductivity provided insights into the electromechanical behavior of vP nanoflakes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
