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.
Review
Energy & Fuels
Silvere Panisset, Monica Burriel, Jerome Laurencin, David Jauffres
Summary: Numerical models are versatile tools for studying and predicting the performance of solid oxide cells (SOCs) based on their microstructure and composition. This article reviews existing models for the oxygen electrode in SOCs and discusses the current challenges of electrode modelling, focusing on better performance and durability prediction, particularly for thin-film SOCs.
JOURNAL OF PHYSICS-ENERGY
(2023)
Article
Chemistry, Applied
Rui Yang, Yunfeng Tian, Yun Liu, Jian Pu, Bo Chi
Summary: To enhance the electrocatalytic activity and stability of LSCF oxygen electrodes in RSOCs, a Pd-LSCF composite oxygen electrode was prepared using a conventional physical mixed method. The Pd-LSCF|GDC|YSZ|Ni-YSZ cell exhibited excellent electrochemical performance in both SOFC and SOEC modes. The power density of the cell in the SOFC mode reached 1.73 W/cm(2) at 800 degrees C, higher than that of the LSCF oxygen electrode. In the SOEC mode, the current density at 1.5 V was 1.67 A/cm(2) at 800 degrees C under 50 vol% steam concentration. The long-term reversible operation of the RSOCs showed a low degradation rate of 2.2%/100 h and 2.5%/100 h in the SOEC and SOFC modes, respectively. These findings demonstrate that the incorporation of Pd into LSCF electrode significantly improves its electrochemical performance in RSOCs.
JOURNAL OF RARE EARTHS
(2023)
Article
Chemistry, Physical
Aleksander Mrozinski, Sebastian Molin, Patryk Blaszczak, Tadeusz Miruszewski, Karolina Gornicka, Jakub Karczewski, Piotr Jasinski
Summary: This work presents a comprehensive study on the impact of A-site non-stoichiometry on the physico-chemical properties of SrxTi0.3Fe0.7O3-d ceramics. The study includes structural analysis, evaluation of sintering and thermal expansion properties, determination of electrical properties, and fuel cell tests. The results show a dependence of the materials' properties on A-site non-stoichiometry.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Jingle Wang, Zhibin Yang, Kaichuang Yang, Suping Peng
Summary: The kinetics of oxygen reaction in porous LSCF and LSCF-GDC electrodes were systematically studied, with GDC accelerating oxygen transport and diffusion and promoting oxygen reaction at the triple-phase boundary. CO2 was found to suppress oxygen reaction in LSCF-GDC, while increasing GDC content improved CO2 tolerance. Additionally, H2O was observed to aggravate CO2 degradation at low temperature.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Fulan Zhong, Yan Zhang, Yu Luo, Chongqi Chen, Huihuang Fang, Kongfa Chen, Chen Zhou, Li Lin, Chaktong Au, Lilong Jiang
Summary: By introducing Sr2+, we successfully improved the electrical conductivity and transport properties of SrR2O4+delta materials. Solid oxide fuel cells based on SYO demonstrate high power density and stability at high temperature.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Ting Chen, Guozhu Zheng, Kui Liu, Guangjun Zhang, Zuzhi Huang, Minquan Liu, Juan Zhou, Shaorong Wang
Summary: This study fabricates a (La0.8Sr0.2)0.95MnO3-$ (LSM) supported reversible solid oxide cell (RSOC) with the configuration of La0.6Sr0.4Fe0.9Sc0.1O3-$ (LSFSc)-YSZ/YSZ/CuNi-CeO2-YSZ, utilizing tape casting, cosintering, and impregnation technologies. The RSOC shows significant power density and electrolysis performance, attributed to the optimized electrodes with increased triple phase boundary (TPB) area and faster gas diffusion and electrochemical reactions for water splitting.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Environmental
Ruoyu Sun, Juntong Liu, Yinsu Wu, Shengtao Xing
Summary: By introducing Zr into MnOX, the oxygen mobility was enhanced, leading to improved performance of PMS catalyst. The Zr-Mn composite oxides exhibited high selectivity and efficiency for the degradation of organic pollutants through a non-radical mechanism. ZM2 sample with a Zr:Mn ratio of 1:1 showed the highest activity, indicating the potential application of this catalyst in wastewater treatment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Jane Banner, Ayesha Akter, Ruofan Wang, John Pietras, Soumitra Sulekar, Olga A. Marina, Srikanth Gopalan
Summary: The study reports the electrochemical performance and chemical stability of composite rare-earth nickelate-rare-earth doped ceria oxygen electrodes with high levels of rare-earth doping, including comparisons with other electrodes in SOFC and SOEC modes, demonstrating higher current density.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Zhe Zhao, Huiying Qi, Shuai Tang, Chao Zhang, Xiuling Wang, Mojie Cheng, Zhigang Shao
Summary: A nanostructured hybrid material with BaZr0.2Co0.8O3-delta composition has been developed as an oxygen electrode for reversible solid oxide cells, showing high current density and stability in SOFC and SOEC modes with no obvious degradation after 100 cycles.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Nanoscience & Nanotechnology
Hu Bai, Yanhong Zhang, Jiaming Chu, Qi Zhou, Haiyang Lan, Juan Zhou
Summary: Proton-conducting solid oxide electrolysis cell (H-SOEC) using PBSCF-BZCYYb composite materials as oxygen electrodes show high electrolysis current densities and considerable stability, with PBSCF-BZCYYb55 being the most promising material.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Yuhua Wu, Zilin Yan, Jiawei Xu, Zheng Zhong, Xinhai Xu
Summary: Composite engineering is an effective strategy for improving the performance and durability of cobalt-based mixed ionic-electronic conducting electrodes. A microstructure-resolved 3D pore-scale model based on an open-source Lattice Boltzmann library is used to study the behavior of composite electrodes. The results show that higher triple-phase-boundary density and ionic conductivity outweigh the disadvantages of lower double-phase-boundary density and electronic conductivity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Simone Anelli, Luis Moreno-Sanabria, Federico Baiutti, Marc Torrell, Albert Tarancon
Summary: The enhancement of solid oxide cell (SOC) oxygen electrode performance through the generation of nanocomposite electrodes via infiltration using wet-chemistry processes has been widely studied in recent years. An efficient oxygen electrode should provide ionic conductivity, high catalytic activity and electronic conductivity, and inkjet printing has shown feasibility as an infiltration technique for SOC fabrication.
Article
Chemistry, Physical
Sea-Fue Wang, Yung-Fu Hsu, Yi-Le Liao, Shih-Ting Huang, Piotr Jasinski
Summary: The perovskite NdSrCo2O5+delta (NSCO) shows high electrical conductivity and is used as the cathode material for Ce0.8Gd0.2O2-delta (GDC)-supported microtubular solid oxide fuel cells (MT-SOFCs). By varying design parameters, the MT-SOFC with an outer tube diameter of 1.86 mm, an electrolyte thickness of 180 um, and a 5NSCO-5GDC composite cathode exhibits the best performance, with high power density and mechanical integrity. The results demonstrate the high electrochemical activity of the NSCO-GDC composite and exceed existing MT-SOFCs in terms of power density.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Zhe Zhao, Xiuling Wang, Shuai Tang, Mojie Cheng, Zhigang Shao
Summary: The study demonstrates that the Ce0.9Co0.1O2-delta-LSM-YSZ oxygen electrode has potential in SOEC technology with higher performance, leading to an increased hydrogen generation rate.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Kaixi Wang, Shuo Wang, Kwan San Hui, Junfeng Li, Chenyang Zha, Duc Anh Dinh, Zongping Shao, Bo Yan, Zikang Tang, Kwun Nam Hui
Summary: A 3D quasi-parallel structure consisting of dense Pt nanoparticles immobilized on oxygen vacancy-rich NiOx heterojunctions has been developed as an alkaline hydrogen evolution reaction (HER) catalyst. The catalyst exhibits extraordinary HER performance with a low overpotential, high mass activity, and long durability. When combined with NiFe-layered double hydroxide, the assembled alkaline electrolyzer requires extremely low voltage and can operate stably for a long time.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Chang Guo, Yu Shen, Peng Mao, Kaiming Liao, Mingjie Du, Ran Ran, Wei Zhou, Zongping Shao
Summary: This study reports a new surface chemistry that converts the undesired Li2CO3 contaminant into an ultra-thin lithium polyphosphate (Li-PPA) layer to address issues in garnet-based solid-state Li-metal batteries (GSSBs). The Li-PPA layer facilitates the spreading of molten Li and acts as an electron-blocking shield to suppress Li dendrite formation. The GSSBs with LiFePO4 demonstrate high capacity and good cyclability, suggesting the feasibility of this interfacial engineering strategy.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Engineering, Environmental
Jie Yu, Zheng Li, Tong Liu, Siyuan Zhao, Daqin Guan, Daifen Chen, Zongping Shao, Meng Ni
Summary: This article summarizes recent efforts and progress in regulating the electronic and morphological structures of CoxAy (A = P, S, Se)-based materials for the optimization of their catalytic performance. Methods such as phase control, defect engineering, nanostructure construction, heteroatom doping, and composite engineering are introduced to optimize the electronic configurations, increase active sites, and enhance the conductivity, etc. Furthermore, the underlying activity-structure relationships behind the boosted catalytic behavior of these materials are discussed in detail. Lastly, a perspective on the future exploration of CoxAy (A = P, S, Se)-based electrocatalysts is presented. This review provides valuable insights into the investigation of emerging materials in energy chemistry.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Chencheng Cao, Yijun Zhong, Zongping Shao
Summary: Despite being widely used, the safety issue of lithium-ion batteries (LIBs) is a major barrier for their application in EVs or large-scale energy storage. This study summarizes the mechanisms of thermal runaway and recent progress in electrolyte engineering for LIBs, including adding flame-retardants, using ionic liquid electrolytes, and solid electrolytes. It also discusses the strengths, weaknesses, and new directions for designing safer electrolytes.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Chuan Zhou, Dongliang Liu, Meijuan Fei, Xixi Wang, Ran Ran, Meigui Xu, Wei Wang, Wei Zhou, Ryan O'Hayre, Zongping Shao
Summary: In this study, the balance between hydration reaction and oxygen reduction reaction (ORR) over protonic ceramic fuel cells (PCFCs) cathode is optimized by controlling the air flow rate. Different cathode materials show different optimal performance under various operating conditions. The study provides important insights into the environmental demands of PCFC cathodes during operation and offers useful guidance for further performance optimization.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Zhenyu Sun, Yi Ding, Cuie Wang, Peng Mao, Beibei Wang, Ran Ran, Wei Zhou, Kaiming Liao, Zongping Shao
Summary: This study proposes a simple, scalable, and inexpensive electrode engineering and recycling strategy for rechargeable zinc-air batteries (ZABs) based on magnetic binder engineering of cobalt-implanted electrocatalysts. By manipulating the electrode with magnets, the ZAB can cycle for 1200 hours, and its anti-pulverization behavior is revealed through in situ observation. The cobalt-implanted electrocatalysts can also be recycled from spent ZABs using a magnetic force-separation method, and the recycled electrocatalysts exhibit considerably prolonged cycling stability for over 500 hours. These findings not only enhance battery performance but also provide sustainable solutions for recycling electrocatalysts for various applications beyond ZABs.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Energy & Fuels
Hai Wang, Jingsheng He, Huimin Xiang, Ran Ran, Wei Zhou, Wei Wang, Zongping Shao
Summary: Mixed Pb-Sn narrow-band-gap perovskite solar cells have attracted attention due to their low cost, high power conversion efficiency, and potential as a replacement for commercial silicon-based solar cells. However, these cells suffer from low efficiency, poor stability, and high Voc loss. Additive engineering strategies, such as stabilizing Sn2+ cations and controlling film properties, have been proposed to improve the efficiency and stability of these cells.
Review
Energy & Fuels
Fayun Wu, Cuie Wang, Kaiming Liao, Zongping Shao
Summary: Metal-air batteries generate electrical energy by combining metal and oxygen, and they are considered a promising technology due to their high energy density, low cost, and environmental friendliness. However, the difficulties in decomposing the discharge products result in a high overpotential. Recent research has shown that semiconductors can capture solar energy and improve the battery reaction by increasing electron migration rate. This review paper discusses the fundamentals of photoelectrochemistry, photocathode design principles, various photocatalysts, challenges caused by light, and perspectives for the development of high-performance light-assisted metal-air batteries.
Article
Engineering, Environmental
Jie Miao, Jian Song, Junyu Lang, Yuan Zhu, Jie Dai, Yan Wei, Mingce Long, Zongping Shao, Baoxue Zhou, Pedro J. J. Alvarez, Lizhi Zhang
Summary: Five-nitrogen coordinated Mn (MnN5) sites effectively activate peroxymonosulfate (PMS) by cleaving the O-O bond into high-valent Mn(IV)-oxo species, with nearly 100% selectivity. This finding highlights the importance of high coordination numbers in single-atom catalysts (SACs) for efficient PMS activation and informs the design of next-generation environmental catalysts.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Review
Engineering, Environmental
Liangshuang Fei, Hainan Sun, Xiaomin Xu, Yu Li, Ran Ran, Wei Zhou, Zongping Shao
Summary: Significant progress has been made in the discovery of bifunctional electrocatalysts for energy storage and conversion systems, particularly for the oxygen evolution reaction (OER) and urea oxidation reaction (UOR). Various materials engineering strategies have been developed to improve the catalytic performance, but the mechanisms of reported bifunctional catalysts vary depending on the types of materials. This review provides a comprehensive overview of the latest developments and understanding of bifunctional electrocatalysts for OER/UOR, and discusses future research directions to achieve sustainable energy and environmental goals.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Energy & Fuels
Chencheng Cao, Yijun Zhong, Hannah Seneque, Jacinta Simi, Zongping Shao
Summary: To meet the increasing demand for electric vehicles and networks, the traditional use of volatile organic liquid electrolytes (LEs) in lithium-ion batteries (LIBs) is being replaced by lithium solid-state batteries (SSBs). However, the interface instability between solid electrolytes (SEs) and electrodes limits the energy density of SSBs. This review summarizes the current research on electrolytes, including the understanding of their mechanisms, scientific obstacles, and solutions for high-performance SSBs.
Review
Chemistry, Physical
Nikolai A. Danilov, Inna A. Starostina, George N. Starostin, Anna V. Kasyanova, Dmitry A. Medvedev, Zongping Shao
Summary: Proton-conducting oxide materials have protonic defects in their crystal structure due to their interaction with hydrogen-containing atmospheres, resulting in superior ionic conductivity. Barium cerate, barium zirconate, and barium cerate-zirconate are widely studied as proton-conducting electrolyte materials. Y and Yb co-doped Ba(Ce,Zr)O-3 is considered one of the most promising systems.
ADVANCED ENERGY MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Yakun Wang, Yeqing Ling, Bin Wang, Guowei Zhai, Guangming Yang, Zongping Shao, Rui Xiao, Tao Li
Summary: This paper provides a general review of the mechanisms, operating principles, and performance improvement strategies of proton ceramic electrochemical cells (PCECs). It also presents various applications of PCECs, such as H2O electrolysis, CO2 electrolysis, and synthesis of high-value chemicals. The future commercialization of PCECs and the existing challenges are discussed.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Physical
Lichang Ji, Yun Zhao, Lijuan Cao, Yong Li, Canliang Ma, Xingguo Qi, Zongping Shao
Summary: This study provides an in-depth analysis of the synthesis processes of coal tar pitches for fabricating hard carbon anodes in sodium-ion batteries. The different characteristics of the coal tar pitches have significant effects on the resulting carbon materials and their sodium storage behaviors.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Gongxu Lan, Huilin Fan, Yuan Wang, Hamidreza Arandiyan, Suresh K. Bhargava, Zongping Shao, Hongyu Sun, Yanguo Liu
Summary: The surface atomic arrangement and defective structures of electrocatalysts play a crucial role in determining their catalytic activity and selectivity. In this study, alpha-Fe2O3 nanosheets with surface oxygen vacancies were synthesized and their oxygen vacancy concentration was varied to study their oxygen reduction reaction (ORR) performance. The results showed that increasing the oxygen vacancy concentration improved the ORR activity up to a certain point, but further increase deteriorated the crystalline quality and affected the performance.
NEW JOURNAL OF CHEMISTRY
(2023)
