Article
Chemistry, Physical
N. Tarasova, A. Galisheva, I. Animitsa, D. Korona, K. Davletbaev
Summary: This study focuses on a novel material, BaLaIn0.5Y0.5O4, with significantly improved properties for clean energy applications. By introducing Y3+ ions into the perovskite layer, the oxygen ionic conductivity and protonic conductivity are both enhanced.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Shohaib Abass, Anita Bagri, Khalid Sultan
Summary: The properties of Nd2NiMnO6 have been modified by doping divalent Sr and introducing oxygen vacancies. The structural disorder and mixed valence of Ni and Mn have been confirmed through various spectroscopy techniques. Dielectric and electrical studies show the dependence of these properties on frequency and temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Surendra B. Karki, Ram Krishna Hona, Ming Yu, Farshid Ramezanipour
Summary: The translated article discusses the enhanced electrocatalytic performance for water electrolysis, achieved through increased ordering of oxygen vacancies in the structural network of oxides. The change in the average ionic radius of the A-site metals leads to an increase in the concentration and ordering of oxygen vacancies, resulting in improved electrocatalytic activity for hydrogen-evolution and oxygen-evolution reactions. The proposed method has significant importance in the field.
Article
Chemistry, Physical
Surendra B. Karki, Ram Krishna Hona, Ming Yu, Farshid Ramezanipour
Summary: This study demonstrates an enhanced electrocatalytic performance for water electrolysis through the progressive increase in ordering of oxygen vacancies. The ordered oxygen vacancies lead to an increase in electrocatalytic activity for both hydrogen and oxygen evolution reactions. These catalysts can be used in bulk form without additional processing.
Article
Chemistry, Physical
Mudi Wu, Mingwu Tan, Wenguo Xiang, Shiyi Chen
Summary: This study proposes a facile method to regulate the physical-chemical properties of perovskite oxide catalysts by controlling the A-site deficiency. The results reveal that sample L1.85NFO exhibits superior performance for toluene catalytic oxidation, with higher oxidizability and more active oxygen species achieved at the surface.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Environmental
Zuoqing Liu, Dongfang Cheng, Yinlong Zhu, Mingzhuang Liang, Meiting Yang, Guangming Yang, Ran Ran, Wei Wang, Wei Zhou, Zongping Shao
Summary: Driven by the demand for sustainable energy, reversible proton ceramic electrochemical cells (R-PCECs) have attracted attention. However, the low activity and poor durability of the oxygen electrode limit their large-scale application. In this study, a novel oxygen electrode material with high activity and stability is developed through partial doping of non-metallic phosphorus. The results show promising potential for non-metal-doped oxygen electrode materials in practical R-PCECs.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Seunghyeok Im, Muhammet Ali Berk, Sungeun Yang, Byung-Kook Kim, Kyung Joong Yoon, Ji-Won Son, Jong-Ho Lee, Ho-Il Ji
Summary: This study investigates the proton uptake mechanism in the triple ionic-electronic conducting oxide PBSCF and discusses the correlations between the proton uptake mechanisms and properties such as mass and conductivity changes.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Xiuan Xi, Jianwen Liu, Yun Fan, Lijuan Wang, Jun Li, Mingming Li, Jing-Li Luo, Xian-Zhu Fu
Summary: In this study, a promising cathode material with high activity and stability was developed by partially replacing Mo with Mg in the double perovskite structure. The newly developed material showed improved redox stability and CO2 electrolysis performance. Experimental results demonstrated that the electrolytic current of the new cathode material was almost double that of the original material, showcasing enhanced electrocatalytic performance.
Article
Chemistry, Physical
Hua Zhang, Kang Xu, Fan He, Yucun Zhou, Kotaro Sasaki, Bote Zhao, YongMan Choi, Meilin Liu, Yu Chen
Summary: This study presents a method for enhancing the activity and stability of protonic ceramic fuel cells through surface regulation of the cathode using a catalyst coating. The improved solid oxide fuel cells demonstrated higher peak power density and better durability.
ADVANCED ENERGY MATERIALS
(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
Chemistry, Multidisciplinary
Zhe Bai, Zhenhua Wang, Ruilong Li, Zeyu Wu, Pingli Feng, Lina Zhao, Tan Wang, Wenshuo Hou, Yu Bai, Guoxiu Wang, Kening Sun
Summary: A triple-phase interface engineering approach using the electrically conductive layered double perovskite PrBaCo2O5+delta (PBCO) is proposed to enhance the electrocatalytic conversion of polysulfides in lithium-sulfur batteries. DFT calculations and in situ Raman spectroscopy confirm that PBCO's enhanced electrical conductivity plays a critical role in the electrocatalytic effect. PBCO-based Li-S batteries exhibit an impressive reversible capacity of 612 mAh g(-1) after 500 cycles with a capacity fading rate of 0.067% per cycle. This work reveals the mechanism of the enriched triple-phase interface approach and provides new insights for designing high-performance catalysts for Li-S batteries.
Article
Nanoscience & Nanotechnology
Xiaofeng Chen, Tingting Zhang, Yang Yu, Xiangbin Cai, Tianyi Gao, Tianwei Zhang, Haoying Sun, Chenyi Gu, Zhengbin Gu, Ye Zhu, Jian Zhou, Yuefeng Nie, Xiaoqing Pan
Summary: Perovskite oxide SrTiO3 can achieve high carrier mobility by introducing oxygen vacancies or dopants, and tunable high-mobility electrons are observed in layered perovskite/perovskite heterostructure. The use of Srn+1TinO3n+1 as an oxygen diffusion barrier allows for reversible engineering of oxygen vacancy concentration near the interface, leading to extremely high mobility exceeding 55000 cm(2) V-1 s(-1) at 2 K in the oxide heterostructure with identical elemental compositions throughout. This layered perovskite/perovskite heterostructure provides a promising platform for reconfigurable high-speed electronic devices.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Konglin Wu, Luoxiang Shi, Zhendong Wang, Ye Zhu, Xinyue Tong, Wenxiang He, Junwei Wang, Lirong Zheng, Yanshang Kang, Weilong Shan, Zhiguo Wang, Aijian Huang, Binbin Jiang
Summary: A general method for designing electrocatalysts for water splitting is proposed, which involves the generation of oxygen vacancies in bimetallic layered double hydroxides using carbon nitride. The high OER activity of these bimetallic layered double hydroxides is attributed to the presence of oxygen vacancies, which lower the energy barrier of the rate-determining step.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Nabeela Akbar, Sara Paydar, Muhammad Afzal, Muhammad Akbar, Muhammad Ali Kamran Yousaf Shah, Wen Ge, Bin Zhu
Summary: The study reports the results of tuning the perovskite BaSnO3 (BSO) as a proton-conducting electrolyte for SPFC. It is found that oxygen vacancies play a crucial role in promoting proton transport, while the electronic short-circuiting issue of BSO semiconductor is addressed by the Schottky junction mechanism at the anode/electrolyte interface. A high-performance SPFC device with high ionic conductivity and power density is demonstrated.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Nataliia Tarasova, Anzhelika Galisheva, Irina Animitsa, Ksenia Belova
Summary: The study focused on a novel complex oxide Ba1.1La0.9In0.5Y0.5O3.95 with layered perovskite structure, showing that co-doping strategy significantly increases protonic conductivity values.
