Article
Nanoscience & Nanotechnology
Shaowei Zhang, Yunan Jiang, Hairui Han, Yihang Li, Changrong Xia
Summary: This study proposes a Ni and F co-doping strategy to improve the electrocatalysts for CO2 reduction reaction (CO2RR). The results show that F-doping and Ni-Fe exsolution enhance CO2 adsorption and reaction rate, while reducing interfacial polarization resistance. The direct CO2 electrolysis in the SOEC achieves a high current density and stability.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Caichen Yang, Yunfeng Tian, Jian Pu, Bo Chi
Summary: Solid oxide electrolysis cell (SOEC) is a promising device for energy conversion by efficiently converting CO2 to CO for renewable energy storage. Developing active and stable cathode catalysts for CO2 reduction reaction (CO2-RR) is crucial for SOECs. In this study, fluorine doping on La0.6Sr0.4Fe0.8Ni0.2O3-delta (LSFN) cathode catalyst was investigated to enhance its electrocatalytic performance for CO2-RR. The results showed that F-doped LSFN had more oxygen vacancies and better CO2 adsorption ability, leading to improved electrolysis current density and durability. Mechanistic analysis revealed that F-doping promoted the formation of intermediates and the rate-determining step of the reaction. This work demonstrates the potential of anion-doped LSFNF0.1 as a promising cathode catalyst for SOEC direct CO2 electrolysis and provides insights for future development of cathode catalysts for SOECs.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Shun Wang, Bin Qian, Zhen Wang, Bo Yin, Yifeng Zheng, Lin Ge, Han Chen, Hui Yang
Summary: This study presents a new strategy of Nb doping for perovskite fuel electrode in SOEC, which can enhance the redox stability and catalytic activity of the fuel electrode, effectively achieving the electrolysis conversion of CO2.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Qingxue Liu, Yuefeng Song, Rongtan Li, Houfu Lv, Weicheng Feng, Yuxiang Shen, Xiaomin Zhang, Guoxiong Wang, Xinhe Bao
Summary: Doping vanadium into BSCF material enhances the stability of CO2 electrolysis and improves the performance of the SOEC cathode.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Chao Sun, Liuzhen Bian, Ji Qi, Wang Yu, Shuting Li, Yunting Hou, Liju Wang, Jun Peng, Shengli An
Summary: The study presents a promising cathode material, Sr1.9La0.1Fe1.5Mo0.5O6-delta, for CO2 electrolysis, which exhibits excellent electrochemical performance and stability.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Applied
Shaowei Zhang, Chengyue Yang, Yunan Jiang, Ping Li, Changrong Xia
Summary: A novel strategy of doping F into the O-site of perovskite LSF is proposed to enhance the electrolytic performance and chemical stability in direct CO2 electrolysis. The doping promotes the formation of oxygen vacancies, increases oxygen vacancy concentration, and improves the CO2 adsorption capability. It also significantly improves the kinetics of the CO2 reduction reaction, resulting in a highly efficient and durable electrolysis cell.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Physical
Seona Kim, Guntae Kim, Arumugam Manthiram
Summary: Recent study on atmospheric adaptive materials that can change crystal structure based on environment, using Dy doping strategy can significantly improve the performance of solid oxide cells, especially 10% Dy doped Pr0.5Ba0.5MnO3-delta shows the best catalytic and electrochemical properties among various doping amounts.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Ping Li, Fei Liu, Zhifan Zhu, Fei Yan, Xiaofeng Tong, Tian Gan, Ligang Wang, Dong Fu
Summary: In this study, a strategy of A-site deficiency and F-doping was used to prepare PSNFMF cathode, which exhibited enhanced oxygen transport kinetics and electrolysis performance compared to R-PSNFM. The A-site deficiency and anion doping synergistically promoted the exsolution reaction and increased oxygen vacancies. The current density of R-PSNFMF based cell for H2O electrolysis and CO2 electrolysis was significantly higher than that of R-PSNFM based cell in harsh conditions.
JOURNAL OF POWER SOURCES
(2023)
Article
Engineering, Environmental
Debo He, Wenji Ruan, Jibiao Li, Jiupai Ni, Chengsheng Ni
Summary: The large-scale integration of intermittent renewable energies into the power grid can reduce CO2 emissions from fossil fuel combustion, but energy storage techniques are required to balance energy production and demand. The electrolysis of CO2, converting electricity into chemicals/fuels, offers a sustainable energy storage and CO2 reduction method. This study investigates the use of a Mo-doped ferrite perovskite as a cathode material in a solid oxide electrolysis cell (SOEC) for the direct electrolysis of CO2 at high temperatures. The Mo-doped cathode shows higher current density during CO2 electrolysis compared to the undoped cathode, and the presence of Mo-doping leads to the production of Ruddlesden-Popper phase and Fe-Mo-O oxides. However, the Mo-doped cathode exhibits degradation under high bias, suggesting the need for further optimization.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Junmeng Jing, Ze Lei, Ziwei Zheng, Haoran Wang, Panpan Zhang, Zhaowen Wang, Hui Xu, Zhibin Yang
Summary: In this research, the crystal structure, oxygen non-stoichiometry, and conductivity of a triple-conducting perovskite Ba0.95La0.05Fe0.8Zn0.2O3_5 (BLFZ) were investigated. It was found that BLFZ exhibits high oxygen vacancy concentration, making it a potential candidate for highly active oxygen electrodes in reversible protonic ceramic cells (R-PCCs). The performance of BLFZ-BZCYYb oxygen electrode was evaluated, and it demonstrated promising results for R-PCCs applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Environmental
Hao Shi, Muya Cai, Wenting Li, Xiang Chen, Kaifa Du, Lei Guo, Peilin Wang, Peng Li, Bowen Deng, Huayi Yin, Dihua Wang
Summary: The direct electro-reduction of CO2 in molten Na2CO3-K2CO3 is achieved using a porous metal foam electrode, which increases the contact area between the solid electrode and CO2 gas, resulting in the direct electro-reduction of CO2 to CO and carbon. The overall current efficiency for CO reaches 90% at 800 degrees C. The use of lithium-and alkaline-earth-metal-free molten carbonates enables easy downstream product separation and offers a more energy-efficient CO2 reduction path.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Ceramics
Yin Zhang, Yuchen Yang, Xiao Hou, Feihai Yu, Qisheng Feng, Baohua Duan, Xionggang Lu, Rongbin Li, Guangyao Chen, Chonghe Li
Summary: In this study, a novel perovskite oxyfluoride BaY0.5Zr0.5O2.5F0.5 was successfully synthesized and characterized. The purity and grain morphology of BaY0.5Zr0.5O2.5F0.5 were found to be favorable under specific synthesis conditions. Additionally, the introduction of F ions improved the stability of the compound.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Zefeng Heng, Yanhong Wan, Changrong Xia
Summary: This study demonstrates that the introduction of Ca element into La0.6Sr0.4Fe0.8Mn0.2O3-delta perovskite can stabilize its structure, improve thermal expansion compatibility with the electrolyte, increase oxygen vacancy concentration and content of adsorbed oxygen species. It also enhances the electrochemical performance as a fuel electrode, reducing interfacial polarization resistance, increasing peak power density, and showing high current density.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Bingjie Pang, Shiqing Hu, Liming Zhang, Qiuxia Feng, Peng Zhang, Xuefeng Zhu, Weishen Yang
Summary: This study reports a novel non-perovskite-type cathode material, Fe2TiO5-delta F0.2, with improved catalytic activity and stability for CO2 electrolysis, achieved through F-doping and the absence of alkaline earth elements.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Liping Yang, Xusheng Ren, Wenjie Peng, Ao Wang, Dong Yan, Jian Li, Lichao Jia
Summary: This study reports a novel Zn-doped Pr1.8Ba0.2NiO4+8 (PBNZ1) air electrode material and analyzes its crystal structure, phases, surface chemistry, hydration and conduction behaviors, and electrochemical performance. The results show that the Zn doping significantly improves the charge transfer processes in the air electrode, leading to higher electrolysis current density and power density.
JOURNAL OF POWER SOURCES
(2023)
Article
Nanoscience & Nanotechnology
Binze Zhang, Shaowei Zhang, Hairui Han, Kaibin Tang, Changrong Xia
Summary: The partial replacement of iron element with gallium in PrBaFe2O5+delta can improve its electrochemical performance as a cathode material for intermediate-temperature solid oxide fuel cells. Specifically, PrBaFe1.9Ga0.1O5+delta exhibits improved physicochemical properties and electrochemical properties, such as an increased oxygen surface exchange coefficient (kchem) and enhanced oxygen dissociation process. Moreover, the anode-supported single cell with PBFG0.1 cathode shows a higher peak power density and good stability in long-term operation.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Siqi Ji, Tianyang Liu, Leipeng Leng, Hongxue Liu, Jiangwei Zhang, Mingyang Zhang, Qian Xu, Junfa Zhu, Man Qiao, Yu Wang, J. Hugh Horton, Zhijun Li
Summary: In this study, a facile protein-mediated approach was used to synthesize highly efficient atomically dispersed iron electrocatalysts. These catalysts exhibited exceptional activity and stability in the oxygen reduction reaction and showed promising performance in a zinc-air battery.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Materials Science, Ceramics
Kang Zhu, Nai Shi, Lijie Zhang, Daoming Huan, Xinyu Li, Xiaoyu Zhang, Rui Song, Changrong Xia, Ranran Peng, Yalin Lu
Summary: Oxygen vacancy engineering via calcium-doping is proposed and validated to improve proton conduction in proton conducting oxides. The presence of more oxygen vacancies and the tailored position of vacancies accelerate proton diffusion and increase proton concentration. The doped compound BZCa1Y2 exhibits higher proton concentration, ionic conductivity, and proton diffusion coefficient compared to BZY2.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Binze Zhang, Shaowei Zhang, Zhen Zhang, Kaibin Tang, Changrong Xia
Summary: A highly efficient and robust metal-supported solid oxide electrolysis cell (SOEC) is developed, which exhibits redox stability, minimal ohmic loss, high conductivity, enlarged specific surface area, and enhanced CO2 adsorption property. The metal-supported SOEC with the infiltrated cathode shows excellent current densities and stability, making it a promising configuration for direct CO2 electrolysis.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Hairui Han, Xueyu Hu, Binze Zhang, Shaowei Zhang, Yanxiang Zhang, Changrong Xia
Summary: A method was proposed to determine the chemical surface exchange coefficient (k(chem)) and reveal the ORR process of porous dual-phase composites based on electrical conductivity relaxation measurements and the distribution of characteristic time (DCT) model. The method was demonstrated with porous LSCF-SDC composites, and it was found that the ORR process involved a combination of gas diffusion, surface exchange, and their interaction. The addition of SDC greatly improved k(chem) in the dual-phase composites, with the highest improvement achieved at around 10% SDC volume fraction. The method is also applicable for analyzing CO2 reduction and vapor splitting reactions in solid oxide electrolysis cells.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Optics
Qiulan Zhao, Xuejie Zhang, Fahui Liu
Summary: In this paper, a novel Kundu-nonlinear Schrodinger equation is derived through a 2 x 2 matrix spectral problem, which can be used to describe phenomena in optical propagation. The determinant expression of generalized (n, N-n)-fold Darboux transformation for the Kundu-nonlinear Schrodinger equation is obtained by solving algebraic equations. Additionally, three different types of solutions are obtained through the generalized (n, N - n) -fold Darboux transformation, including soliton solutions, degenerate soliton solutions, and interaction solutions between solitons and degenerate solitons, categorized into elastic interaction and bound-state. The conditions for their generation are discussed, and the properties of these solutions are analyzed graphically.
Article
Chemistry, Multidisciplinary
Zhijun Li, Xiaowen Lu, Rufang Zhao, Siqi Ji, Mingyang Zhang, J. Hugh Horton, Yang Wang, Qian Xu, Junfa Zhu
Summary: Researchers have developed an efficient molten-salt-assisted approach to create atomically dispersed cobalt atoms supported over vanadium pentoxide layered material. This cobalt single-atom catalyst achieves extraordinary catalytic efficiency in the dehydrogenative coupling reaction of alcohols and amines, with high selectivity and conversion. Density functional theory calculations confirm the optimized coordination environment and strong metal-support interaction contribute significantly to the activation of reactants.
Article
Multidisciplinary Sciences
Rui Wu, Jie Xu, Chuan-Lin Zhao, Xiao-Zhi Su, Xiao-Long Zhang, Ya-Rong Zheng, Feng-Yi Yang, Xu-Sheng Zheng, Jun-Fa Zhu, Jun Luo, Wei-Xue Li, Min-Rui Gao, Shu-Hong Yu
Summary: Finding highly efficient hydrogen evolution reaction (HER) catalysts is crucial for achieving a net-zero carbon emission society. In this study, we synthesized 10 kinds of single-atom-doped CoSe2-DETA nanobelts and discovered a correlation between HER activity and Co atomic configuration. Specifically, the Pb-CoSe2-DETA catalyst exhibited remarkable catalytic performance in acidic electrolyte, which can be attributed to its optimized Co atomic configuration induced by single-atom doping.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Yuzhu Zhou, Quan Zhou, Hengjie Liu, Wenjie Xu, Zhouxin Wang, Sicong Qiao, Honghe Ding, Dongliang Chen, Junfa Zhu, Zeming Qi, Xiaojun Wu, Qun He, Li Song
Summary: Developing efficient electrocatalysts for selective CO2 conversion is important. In this study, the authors demonstrate that a Ni single-atom catalyst coordinated with pyrrolic nitrogen and pyridinic nitrogen efficiently converts CO2 to CO. The catalyst shows high CO partial current density and turnover frequency, as well as excellent Faradaic efficiency of CO. The study also provides insights into the origin of the catalyst's catalytic activity.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Yongtao Zhao, Shaowei Zhang, Mingchao Su, Daoming Huan, Ranran Peng, Changrong Xia
Summary: In this study, a stoichiometric CuFe2 alloy was successfully electroplated on the surface of SUS 430, forming a CuFe2O4 spinel coating through in-situ thermal oxidation. The mechanism of CuFe2 alloy electroplating was revealed using density functional theory calculations and COMSOL simulations. The dense CuFe2O4 coating effectively blocked the outward volatile Cr species and suppressed the increase in area specific resistance (ASR) in long-term testing. The practical application of CuFe2O4-coated SUS 430 showed improved durability due to mitigated chromium poisoning.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Zhiwen Zeng, Jianmin Huang, Dong Han, Xingyu Li, Qian Xu, Tao Wang, Junfa Zhu
Summary: Controlling the synthesis of low-dimensional chiral nanostructures on solid surfaces has attracted significant interest. This study demonstrates the substrate-directed chiral selectivity of self-assemblies and polymers. Thermo-annealing results in the stepwise formation of organometallic and covalent structures on different surfaces, with high chiral selectivity achieved on Ag(111).
Article
Chemistry, Applied
Xiaoye Liu, Xiangkun Kong, Wenyi Xiang, Yining Jiang, Bingqinq Xiong, Weiwei Ping, Changrong Xia, Daoming Huan, Chengwei Wang
Summary: In this study, a new garnet-type composite solid-state electrolyte (LLBZNO-LCO) was proposed to improve the chemical stability and electrochemical properties of garnet with high-temperature processing. The addition of a small amount of LCO significantly decreased the interface resistance and reduced the sintering temperature of garnet-type LLBZNO. The all-solid-state battery based on the sintered LLBZNO-LCO SSE showed excellent cycling stability. This approach provides a new strategy for optimizing the comprehensive performance of garnet SSE.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yang Wu, Dongpo He, Lei Li, Zhiqiang Wang, Wensheng Yan, Junfa Zhu, Yang Pan, Qingxia Chen, Xingchen Jiao, Yi Xie
Summary: This study investigates the influence of defects on the three main processes during CO2 photoreduction using two-dimensional materials. The presence of oxygen defects is found to expand photoabsorption, accelerate carrier separation, and enhance CO2 adsorption and protonation, thereby improving CO2 photoreduction performance.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Qihua Yang, Junfa Zhu, Yiqi Ren, Maodi Wang
Summary: In this study, a chiral solid catalyst, chiral diamine modified Ni/SiO2, was prepared for asymmetric Michael addition. The experimental results showed that the chiral diamine modified Ni/SiO2 achieved a higher ee value and turnover frequency compared to chiral Ni complexes. The peripheral Ni sites in close contact with SiO2 support were identified as the active sites, distinct from homogeneous complexes. Continuous flow production of chiral compounds for more than 65 hours was achieved using the solid catalysts in a fixed bed reactor.
Article
Plant Sciences
Peiling Wang, Xiaohong Xu, Yong Li, Hecui Zhang, Xuejie Zhang, Siru Zhou, Yimei Liu, Yunyan Feng, Tonghong Zuo, Liquan Zhu
Summary: This study analyzed the Phytocyanin gene family in tobacco and found that it plays a significant role in electron transport, plant growth and development, and stress resistance. The whole-genome sequencing revealed 110 NtPC genes in tobacco, which were divided into four subfamilies. Furthermore, the expression patterns of these genes varied during different developmental stages and in tissue-specific manner.
PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY
(2023)
