Article
Chemistry, Physical
Huiying Qi, Tonghuan Zhang, Di Liu, Mojie Cheng, Baofeng Tu
Summary: A new series of perovskite composites with nominal compositions of Sr0.8La0.2Co1-xZrxO3-delta were synthesized via one-pot in-situ self-assembly method. The optimum composite showed enhanced charge transport, oxygen reduction, and gas diffusion, with tailored thermal expansion coefficient suitable for solid oxide fuel cell applications. The composite exhibited high electrical conductivity and achieved superior performance as a cathode material in intermediate-temperature solid oxide fuel cells.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Ben Ma, Zhaohui Chen, Zhuang Lin, Lin Cheng, Yingke Zhou
Summary: This study investigates the effects of Mg doping on the performance of Mn-Cr spinel oxide cathodes in solid oxide fuel cells (SOFCs). Both experimental results and density functional theory (DFT) calculations show that Mg doping can optimize the electronic structure of the spinel oxide, increase the oxygen vacancy concentration, and improve the electrical conductivity and catalytic activity. The Mg-doped Mn-Cr spinel oxide cathode exhibits superior performance with high area-specific polarization resistance and maximum power density.
JOURNAL OF POWER SOURCES
(2023)
Article
Materials Science, Ceramics
Huiying Qi, Tonghuan Zhang, Mojie Cheng, Di Liu, Baofeng Tu
Summary: Assembling multiple perovskites with complementary properties in novel nanocomposites, such as BaCo1-xZrxO3-delta, shows promise for achieving high-performance cathodes for low/intermediate-temperature solid oxide fuel cells. These nanocomposites exhibit improved thermal expansion coefficients and electrical conductivity, leading to enhanced oxygen adsorption, dissociation, and reduction reaction at the cathode.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Engineering, Multidisciplinary
Hongxia Gu, Meigui Xu, Yufei Song, Chuan Zhou, Chao Su, Wei Wang, Ran Ran, Wei Zhou, Zongping Shao
Summary: A new perovskite SrCo0.8Ti0.1Ta0.1O3-delta (SCTT) with high electrical conductivities, appropriate oxygen vacancy concentrations, and high bulk diffusion capability has been developed, showing favorable oxygen reduction reaction (ORR) activity at intermediate temperatures. The SCTT material exhibits high peak power density and durability in solid oxide fuel cells and protonic ceramic fuel cells, potentially accelerating the commercialization of IT-SOFC technology.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Chemistry, Physical
Jun Li, Zhipeng Gao, Huihua Min, Mingze Li, Yi Lu, Xiaoyu Wang, Xifeng Ding
Summary: A study proposed an effective strategy to enhance the CO2 tolerance of solid oxide fuel cell cathode through surface modification, which reduced the polarization resistance and exhibited less catalytic activity attenuation in CO2 atmosphere. The modification synergistically enhanced oxygen reduction reaction kinetics and CO2 poisoning robustness for the perovskite material, showing great potential for future applications in SOFC technology.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Huiying Qi, Baofeng Tu, Mojie Cheng, Tonghuan Zhang
Summary: The study developed a highly active perovskite nanocomposite for intermediate-temperature solid oxide fuel cells, which showed superior performance through nano-scale assembly and active surface oxygen species, enhancing oxygen catalysis.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Ceramics
Yuwei Yang, Tian Xia, Shuang Li, Ziwei Dong, Qiang Li, Lihua Huo, Hui Zhao
Summary: This study synthesized and evaluated an A-site gadolinium-doped La0.33Ba0.62Gd0.05Co0.7Fe0.3O3-delta perovskite as a cathode material for intermediate-temperature solid oxide fuel cells (IT-SOFCs). The results showed that this material exhibited outstanding catalytic activity for oxygen reduction reaction (ORR), surpassing the performance of traditional perovskite materials. It also demonstrated improved carbon dioxide tolerance compared to the pristine material.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Fulan Zhong, Cheng Han, Yu Luo, Chen Zhou, Chongqi Chen, Li Lin, Guohui Cai, Lilong Jiang
Summary: The study focuses on designing a good cathode material based on spinel NiMn2O4 with the addition of magnesium to induce oxygen vacancies and improve performance. The resulting MgxNiMn2-xO4-delta oxide showed higher compatibility with the solid oxide fuel cell and exhibited better electrochemical performance compared to a commercial LSM-based one.
JOURNAL OF POWER SOURCES
(2021)
Article
Engineering, Manufacturing
Seo Ju Kim, Deokyoon Woo, Donguk Kim, Tae Kyeong Lee, Jaeyeob Lee, Wonyoung Lee
Summary: The sluggish kinetics of the oxygen reduction reaction (ORR) is a major obstacle to the development of intermediate-temperature solid-oxide fuel cells (IT-SOFCs). By controlling the oxygen vacancy concentration through varying the dopant cation ratio, the anion defect concentration at the cathode-electrolyte interface can be engineered to facilitate ORR kinetics and improve electrochemical performance.
INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING
(2023)
Article
Chemistry, Physical
Daqian Liu, Yingnan Dou, Tian Xia, Qiang Li, Liping Sun, Lihua Huo, Hui Zhao
Summary: Introducing lanthanide ions into B-site of simple perovskite oxides through doping can enhance electrode performance for solid oxide fuel cells, with BSCFP cathode showing the lowest polarization resistance at 700°C and delivering exceptional operating stability. The enhanced performance is attributed to increased electrical conductivity and optimized surface oxygen process achieved through experiments and DFT calculations.
JOURNAL OF POWER SOURCES
(2021)
Article
Engineering, Environmental
Yuan Zhang, Junbiao Li, Heping Xie, Zhipeng Liu, Suling Shen, Ying Teng, Daqin Guan, Shuo Zhai, Yufei Song, Wei Zhou, Bin Chen, Meng Ni, Zongping Shao
Summary: By utilizing a CO2-induced reconstruction strategy, a BaCO3 shell with both oxygen incorporative and robust properties was successfully built on a self-assembled composite cathode made of BaFeO3-delta perovskite. The resulting cathode exhibited enhanced ORR activity, durability, and thermomechanical compatibility.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Bo Liu, Na Li, Liping Sun, Qiang Li, Lihua Huo, Zhao Hui
Summary: Doped rare earth elements significantly influence the properties of Nd(1.9)Ln(0.1)CuO(4), with Nd1.9Ce0.1CuO4 showing the highest performance in terms of surface oxygen adsorption, DC conductivity, and electrocatalytic activity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Energy & Fuels
Enrico Squizzato, Caterina Sanna, Antonella Glisenti, Paola Costamagna
Summary: This study investigated the structural and catalytic characteristics of La0.6Sr0.4MnO3 (LSM) nanofibers compared to LSM powders. The results showed that nanofibers had higher surface area and better catalytic performance than powders.
Article
Materials Science, Ceramics
Huiying Qi, Peng Qiu, Tonghuan Zhang, Di Liu, Mojie Cheng, Baofeng Tu
Summary: This study proposes cost-effective cathode materials with high catalysis activity for use in intermediate-temperature solid oxide fuel cells. Cobalt-free composites were synthesized using a smart self-assembled method, primarily utilizing doped-BaZrO3 and doped-BaFeO3 cubic perovskites. Both composite cathodes exhibit nano- and micro-particles with extensive heterointerfaces and excellent cathode| electrolyte interfaces, which can assist the surface catalysis and oxygen species transport. A cell with a BSrFZ composite cathode achieved a higher maximum power density compared to that with a BSmFZ composite cathode, benefiting from its enriched oxygen vacancies and high surface and heterointerface activities.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Wanfeng Zhu, Haocong Wang, Lanlan Xu, Jianguang Yuan, Jian Gong, Xiaojuan Liu
Summary: The development of triple-conductivity durable cathode with effective oxygen reduction reaction (ORR) activity is significant for proton-conducting solid oxide fuel cell (H-SOFC) at intermediate-to-low-temperature. In this study, a Pr0.7Ba0.3Co0.8-xFe0.2NixO3-delta (x = 0, 0.1, 0.2, 0.3) cathode material with triple-conductivity was developed. Nickel doping was found to enhance the surface exchange kinetics and boost bulk charge transfer, resulting in better ORR activity and durability for H-SOFC.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Nanoscience & Nanotechnology
Mingwei Zan, Suting Weng, Haoyi Yang, Junyang Wang, Lufeng Yang, Sichen Jiao, Penghao Chen, Xuefeng Wang, Jie-Nan Zhang, Xiqian Yu, Hong Li
Summary: The demand for portable electronic devices has increased the need for higher energy density in layered LiCoO2 (LCO). However, its practical applications are hindered by the unstable surface structure and side reactions at high voltages (>4.5 V). In this study, a conformal and integral LiNixCoyMn2-x-yO4 spinel coating was designed on the surface of LCO using a sol-gel method, which improved cycle and rate performance and stabilized the cathode-electrolyte interface. The designed spinel coating layer was also well preserved after prolonged cycling, preventing the formation of an electrochemically inert Co3O4 phase and ensuring fast lithium transport kinetics.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Pushun Lu, Yu Xia, Yuli Huang, Zhendong Li, Yujing Wu, Xue Wang, Guochen Sun, Shaochen Shi, Zhengju Sha, Liquan Chen, Hong Li, Fan Wu
Summary: By coupling FeS2 with the superionic conductor LASI-80Si, an all-solid-state battery (ASSB) is proposed to overcome the challenges associated with rechargeable FeS2 batteries, enabling wide-temperature and large-capacity applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiao Zhang, Xiaoyun Li, Suting Weng, Siyuan Wu, Qiuyan Liu, Mengyan Cao, Yejing Li, Zhenyu Wang, Lingyun Zhu, Ruijuan Xiao, Dong Su, Xiqian Yu, Hong Li, Liquan Chen, Zhaoxiang Wang, Xuefeng Wang
Summary: The problems of humidity sensitivity and instability to high-voltage oxide cathodes in sulfide electrolytes are solved by constructing a Li2CO3 interface, leading to enhanced electrochemical performance of all-solid-state batteries.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Physical
Chenxi Zu, Jiuming Li, Boran Cai, Jiliang Qiu, Yan Zhao, Qi Yang, Hong Li, Huigen Yu
Summary: This study develops separators with reactive metal oxide coatings to alleviate the formation of lithium dendrites and achieve dendrite-free lithium deposition and fast charging capability in lithium metal batteries. The use of reactive separator revolutionizes separator design and manufacturing for alkali metal batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Hao Huang, Lipeng Zhang, Huayang Tian, Junqing Yan, Junfan Tong, Xiaohang Liu, Haoxuan Zhang, Heqin Huang, Shu-meng Hao, Jian Gao, Le Yu, Hong Li, Jieshan Qiu, Weidong Zhou
Summary: The currently dominant cathode material Li(NixCoyMnz)O-2(NCM, x + y + z = 1) in lithium-ion batteries exhibits higher energy density with increasing nickel content, but it also suffers from stronger interface reactions with the electrolyte and worse safety performance. Single crystal cathode materials have advantages such as fewer grain boundaries, higher density, and suppressed microcracks, leading to reduced interfacial side reactions and improved volumetric energy density and safety performance. In this study, a pulse high-temperature sintering (PHTS) strategy is reported to prepare single-crystal Li(Ni0.9Co0.05Mn0.05)O-2 (SC-NCM90), which shows enhanced tap density and thermal stability compared to spherical NCM90 particles.
ADVANCED ENERGY MATERIALS
(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
Nanoscience & Nanotechnology
Jing Xu, Yuqi Wang, Siyuan Wu, Qifan Yang, Xiao Fu, Ruijuan Xiao, Hong Li
Summary: This study investigates the crystal structures of Na3YCl6 and proposes a three-step structure construction method using functional (Y2Cl9)3- groups as building blocks to obtain three new crystal structures in the composition of Na3Y2Cl9. The transport properties, thermostability, and electrochemical window of these structures are studied using first-principles calculation methods. The results show that the principle of designing crystal structures of halides by basic blocks is effective, and the P63-Na3Y2Cl9 structure exhibits outstanding transport properties due to the coherent diffusion connecting two directions. This research will promote the understanding of the transport mechanism in halide-based electrolytes and accelerate the inverse design of inorganic crystal structures based on functional building blocks and special stacking modes.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Zhicheng Wang, Ran Han, Haiyang Zhang, Dan Huang, Fengrui Zhang, Daosong Fu, Yang Liu, Yumeng Wei, Haiqi Song, Yanbin Shen, Jingjing Xu, Jieyun Zheng, Xiaodong Wu, Hong Li
Summary: A nonflammable electrolyte is developed for high-energy-density storage battery, which consists of 1 M lithium difluoro(oxalato)borate (LiDFOB) in triethyl phosphate (TEP) and N-methyl-N-propyl-pyrrolidinium bis(trifluoromethylsulfonyl)imide [Pyr(13)][TFSI] ionic liquid (IL) solvents. The unique solvation structure of the electrolyte induces stable anion-derived electrolyte/electrode interphases, inhibiting Li dendrite growth and side reactions between TEP and electrodes.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Physics, Multidisciplinary
Quan Li, Yang Yang, Xiqian Yu, Hong Li
Summary: Researchers are pursuing high-energy-density rechargeable lithium batteries due to their revolutionary potential. We have manufactured practical pouch-type rechargeable lithium batteries with high gravimetric and volumetric energy densities, achieved through the use of high-performance battery materials and advanced process technologies.
CHINESE PHYSICS LETTERS
(2023)
Article
Energy & Fuels
Cong Hu, Wei Zheng, Bin Zhao, Yu Fan, Hong Li, Kun Zheng, Gang Wang
Summary: A comprehensive evaluation methodology is proposed for silicone-based potted modules to assess their physical and electrical properties as well as the influence of gamma-radiation on the encapsulated interface. The results show that gamma-radiation increases the crosslinking density, hardness, elastic modulus, volume resistivity, dielectric constant, and storage modulus, while decreasing the elongation at break and dielectric loss factor. The tensile strength, breakdown strength, and coefficient of thermal expansion of the interface exhibit complex trends. The partial discharge inception voltage slightly increases due to the unchanged interface bonding state and slightly decreased electric field strength at the tip.
Article
Chemistry, Physical
Hongyi Pan, Sichen Jiao, Zhichen Xue, Jin Zhang, Xilin Xu, Luyu Gan, Quan Li, Yijin Liu, Xiqian Yu, Hong Li, Liquan Chen, Xuejie Huang
Summary: The pursuit of high-energy-density lithium-ion batteries has led to extensive research on the high-capacity lithium-rich manganese-rich oxide cathode (LRMO). This study investigates the thermal stability of LRMO through in situ X-ray diffraction and full-field transmission X-ray microscopy combined with X-ray absorption near edge structure. The roles of Ni and Mn in affecting the thermal stability of LRMO are uncovered, with Ni acting as a key factor that governs the onset temperature of thermal decomposition. Moreover, incomplete coverage of solid polymer electrolytes over the LRMO particle surface may lead to the deterioration of thermal stability.
ADVANCED ENERGY MATERIALS
(2023)
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
Materials Science, Multidisciplinary
Xinyu Li, Zemin Chen, Daoming Huan, Bingbing Qiu, Kang Zhu, Zeming Qi, Hengjie Liu, Changrong Xia, Ranran Peng, Yalin Lu
Summary: This study demonstrates the successful modification of proton-conducting solid oxide fuel cell (PCFC) cathode surfaces using boron (B), leading to improved CO2 resistance and surface electrocatalytic activity for proton-involved oxygen reduction reaction (P-ORR). The introduction of B raises the surface Bronsted acid (-OH) concentration while suppressing the surface Lewis acidity, ultimately enhancing the power density of the PCFC.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Physical
Lujuan Ye, Kang Zhu, Yunan Jiang, Shaowei Zhang, Ranran Peng, Changrong Xia
Summary: Solid oxide electrolysis cells (SOECs) can efficiently convert CO2 into valuable chemicals. Ceria with exsolved Fe nanoparticles on its surface shows enhanced electrochemical performance for CO2 reduction reaction (CO2RR).
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Suting Weng, Siyuan Wu, Zepeng Liu, Gaojing Yang, Xiaozhi Liu, Xiao Zhang, Chu Zhang, Qiuyan Liu, Yao Huang, Yejing Li, Mehmet N. Ates, Dong Su, Lin Gu, Hong Li, Liquan Chen, Ruijuan Xiao, Zhaoxiang Wang, Xuefeng Wang
Summary: In this study, the staging structure and evolution of lithium-intercalated graphite were revealed at the nanoscale using cryogenic-transmission electron microscopy and other methods. The intercalated lithium ions were found to distribute unevenly, leading to local stress and dislocations in the graphite structure. Each staging compound exhibited macroscopic order but microscopic inhomogeneity, revealing a localized-domains structural model.
