Article
Chemistry, Analytical
Liang Shan, Jie Zou, Wenwen Chen, Xuebin Li, Xianwei Qian, Weifeng Zhang, Wanlei Gao, Xin Zhang, Qinghui Jin, Jiawen Jian
Summary: The addition of volatile B2O3 to the BZY electrolyte improves its density and enhances the sensitivity and stability of the sensor. The NH3 sensor based on BZY20 electrolyte has a low detection limit, good selectivity, repeatability, and long-term stability.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Materials Science, Ceramics
Fenglong Zhang, Fei Ruan, Jinxiao Bao, Yang Li, Yuwei Ma, Rui Chen
Summary: The doping of Y2O3 has a significant influence on the electrical conductivity of CaHf1-xYxO3-delta, resulting in an initial increase and subsequent decrease with increasing x. Protons are found to be the main conductive carriers in the three different atmospheres at temperatures between 973 and 1173 K. Positive holes dominate the conductive process in an oxygen-rich atmosphere, while vacancies act as the main conductive carriers in a water vapor-rich atmosphere, within the temperatures range of 1273-1373 K. The chemical diffusion coefficients of CaHf1-xYxO3-delta range from 3.9 x 10(-6) to 2.4 x 10(-5) cm(2)/s at temperatures between 973 and 1373 K. The proton transfer number of CaHf1-xYxO3-delta exceeds 97% in a hydrogen atmosphere from 973 to 1173 K. These findings suggest that CaHf1-xYxO3-delta could serve as an alternative material for hydrogen sensor electrolytes.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Zezhong Wang, Ying Li, Wenlong Huang, Yushi Ding
Summary: Ba3Ba1+xTa2-xO9-delta oxides demonstrate excellent proton conductivity within a certain temperature range.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Analytical
Zi Wang, Liang Shan, Yucun Zhou, Tao Yuan, Shaolin Zhang, Guangzhong Xie, Wanlei Gao, Qinghui Jin, Jiawen Jian, Jie Zou
Summary: This study presents a novel ammonia sensor based on BZY electrolytes, which shows a low detection limit, high sensitivity, selectivity and repeatability at a relatively low working temperature.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Wenlong Huang, Yushi Ding, Ying Li, Zezhong Wang
Summary: The new double perovskite-type proton conductor BBT30 exhibits high conductivity at high temperatures, with protonic conduction being predominant. It also has a higher proton transport number in atmospheric conditions compared to other double perovskite-type proton conductors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Makoto Takayanagi, Daiki Nishioka, Takashi Tsuchiya, Masataka Imura, Yasuo Koide, Tohru Higuchi, Kazuya Terabe
Summary: All-solid-state electric double layer transistors (ASS-EDLTs) have attracted attention for their potential use in neuromorphic device applications, but their low switching response speed is a significant drawback. We demonstrated ultrafast-switching of ASS-EDLTs by combining hydrogenated diamond single crystal and a porous yttria stabilized zirconia thin film with high proton conductivity. The ASS-EDLT achieved a very short response time of less than a hundred ms (27 ms) at room temperature, which is much shorter than typical conventional ASSEDLTs.
MATERIALS TODAY ADVANCES
(2023)
Article
Chemistry, Physical
Fei Ruan, Ruming Wu, Yang Li, Jinxiao Bao, Jianquan Gao, Fen Zhou, Min Xie, Pengfei Xu, Xiwen Song
Summary: In this study, a solid-state electrolyte Er-doped CaZrO3 was successfully prepared and its microstructures and electrochemical properties were investigated. Protons were identified as the predominant charge carriers in a hydrogen atmosphere at high temperatures, while the ionic electrical conductivity decreased with increasing Er2O3 doping.
Article
Chemistry, Multidisciplinary
Sunil Kumar Sailapu, Neus Sabate, Eric Bakker
Summary: The article introduces an advanced self-powered potentiometric sensor with memory, capable of recording real-time ion activity and determining if the analyte concentration has surpassed a threshold in a predefined time interval. The sensor achieves this by harvesting energy in a capacitor and preserving it with the help of a diode, allowing minimal electronic components in a self-powered design.
Review
Chemistry, Physical
Paul C. Okonkwo, Oladeji O. Ige, El Manaa Barhoumi, Paul C. Uzoma, Wilfred Emori, Abdelbaki Benamor, Aboubakr M. Abdullah
Summary: This paper summarizes the degradation of platinum catalyst layer in PEMFCs and the improvement strategies, recommends prospects for addressing platinum degradation through further research, and ultimately reduces the high costs associated with replacing catalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Biophysics
Anton Turaev, Ekaterina A. Isaakova, Vjacheslav V. Severov, Alexandra N. Bogomazova, Timofei S. Zatsepin, Makar Sardushkin, Andrey Aralov, Maria A. Lagarkova, Galina E. Pozmogova, Anna M. Varizhuk
Summary: The design of robust sensors for measuring intracellular pH based on native DNA i-motifs offers a sensitive and fast-response approach without the need for additional modules. This 'genome-inspired' design can be used to monitor proton dynamics in the nucleus, suggesting it is a productive approach for the development of biocompatible molecular tools.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Alessandro Paghi, Martina Corsi, Antonino. A. La Mattina, Gabriella Egri, Lars Dahne, Giuseppe Barillaro
Summary: A miniaturized wireless sensing vaginal ring is reported for continuous monitoring of vaginal pH and real-time transmission of data to a smartphone, aiming at the diagnosis and management of bacterial vaginosis. The ring consists of a bioresorbable pH fluorescence sensor and a polydimethylsiloxane ring encapsulating a miniaturized driving/readout optoelectronic circuit, wireless transceiver, and power supply. The sensor shows excellent performance in continuous pH measurement and can transmit data to a smartphone in real time. The technology can be translated to other diseases by engineering the polymer stack with suitable receptors.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Physical
Jui-Yu Pai, Cheng-Ta Hsieh, Chih-Hung Lee, Jeng-An Wang, Hao-Yu Ku, Chun-Lung Huang, Laurence J. Hardwick, Chi-Chang Hu
Summary: Functionalised polyimide separators with SiO2 nanoparticles enhance mechanical strength, electrolyte uptake capability, and ionic conductivity, improving the performance of electrical double-layer capacitors and lithium-ion batteries. Adding SiO2 NPs helps tailor the properties of the polyimide separator for specific applications, such as high-rate performances and thermal shutdown function.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Multidisciplinary
Yitian Tang, Shiyu Gan, Lijie Zhong, Zhonghui Sun, Longbin Xu, Chunxian Liao, Kanglong Lin, Xiaoqing Cui, Dequan He, Yingming Ma, Wei Wang, Li Niu
Summary: This study proposes a method to improve the sensitivity and selectivity of WO3 pH sensors through lattice H+ intercalation. The results show that this method effectively enhances the performance of the sensor, making it suitable for wearable sweat pH monitoring.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Electrochemistry
Anis Allagui, Mohammed E. Fouda
Summary: This study explores the computation of capacitance from time-domain data, utilizing definitions of capacitance and frequency-domain data analysis. Experimental results demonstrate the effectiveness of the capacitance calculation method in different scenarios.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Martina Corsi, Alessandro Paghi, Stefano Mariani, Giulia Golinelli, Aline Debrassi, Gabriella Egri, Giuseppina Leo, Eleonora Vandini, Antonietta Vilella, Lars Daehne, Daniela Giuliani, Giuseppe Barillaro
Summary: This study presents a bioresorbable nanostructured pH sensor that can measure local pH levels in real time. The sensor is composed of a micrometer-thick porous silica membrane coated with a nanometer-thick multilayer stack of polyelectrolytes labeled with a pH-insensitive fluorophore. It has high stability, reproducibility, and accuracy, and can continuously operate for over 100 hours. In vivo experiments on mice confirmed the real-time monitoring of pH levels through the skin. The sensor degrades completely within one week and exhibits good biocompatibility after 2 months.
Article
Chemistry, Physical
Tianyu Chen, Zhibin Lu, Guangjin Zeng, Yongmin Xie, Jie Xiao, Zhifeng Xu
Summary: The study introduces a high-performance LSGM electrolyte-supported tubular DC-SOFC stack for portable applications, which shows great potential in developing into high-performing, efficient, and environmentally friendly portable power sources for distributed applications.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Wenbin Tong, Yili Chen, Shijie Gong, Shaokun Zhu, Jie Tian, Jiaqian Qin, Wenyong Chen, Shuanghong Chen
Summary: In this study, a three-dimensional porous NiO interface layer with enhanced anode dynamics is fabricated, forming a Schottky contact with the zinc substrate, allowing rapid and uniform zinc plating both inside and below the interface layer. The resulting NiO@Zn exhibits exceptional stability and high capacity retention.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yafeng Bai, Kaidi Li, Liying Wang, Yang Gao, Xuesong Li, Xijia Yang, Wei Lu
Summary: In this study, a flexible zinc ion supercapacitor with gel electrolytes, porous alpha-MnO2@reduced graphene oxide cathode, and activated carbon/carbon cloth anode was developed. The device exhibits excellent electrochemical performance and stability, even at low temperatures, with a high cycle retention rate after 5000 cycles.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Anmol Jnawali, Matt D. R. Kok, Francesco Iacoviello, Daniel J. L. Brett, Paul R. Shearing
Summary: This article presents the results of a systematic study on the electrochemical performance and mechanical changes in two types of commercial batteries with different anode chemistry. The study reveals that the swelling of anode layers in batteries with silicon-based components causes deformations in the jelly roll structure, but the presence of a small percentage of silicon does not significantly impact the cycling performance of the cells within the relevant state-of-health range for electric vehicles (EVs). The research suggests that there is room for improving the cell capacities by increasing the silicon loading in composite anodes to meet the increasing demands on EVs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yohandys A. Zulueta, My Phuong Pham-Ho, Minh Tho Nguyen
Summary: Advanced atomistic simulations were used to study ion transport in the Na- and K-doped lithium disilicate Li2Si2O5. The results showed that Na and K doping significantly enhanced Li ion diffusion and conduction in the material.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Zongying Han, Hui Dong, Yanru Yang, Hao Yu, Zhibin Yang
Summary: An efficient phase inversion-impregnation approach is developed to fabricate BaO-decorated Ni8 mol% YSZ anode-supported tubular solid oxide fuel cells (SOFCs) with anti-coking properties. BaO nanoislands are successfully introduced inside the Ni-YSZ anode, leading to higher peak power densities and improved stability in methane fuel. Density functional theory calculations suggest that the loading of BaO nanoislands facilitates carbon elimination by capturing and dissociating H2O molecules to generate OH.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Suresh Mamidi, Dan Na, Baeksang Yoon, Henu Sharma, Anil D. Pathak, Kisor Kumar Sahu, Dae Young Lee, Cheul-Ro Lee, Inseok Seo
Summary: Li-CO2 batteries, which utilize CO2 and have a high energy density, are hindered in practical applications due to slow kinetics and safety hazards. This study introduces a stable and highly conductive ceramic-based solid electrolyte and a metal-organic framework catalyst to improve the safety and performance of Li-CO2 batteries. The optimized Li-CO2 cell shows outstanding specific capacity and cycle life, and the post-cycling analysis reveals the degradation mechanism of the electrodes. First-principles calculations based on density functional theory are also performed to understand the interactions between the catalyst and the host electrode. This research demonstrates the potential of MOF cathode catalyst for stable operation in Li-CO2 batteries.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Ganghua Xiang, Zhihuan Qiu, Huilong Fei, Zhigang Liu, Shuangfeng Yin, Yuen Wu
Summary: In this study, a CeFeOx-supported Pt single atoms and subnanometric clusters catalyst was developed, which exhibits enhanced catalytic activity and stability for the preferential oxidation of CO in H2-rich stream through synergistic effect.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Dimitrios Chatzogiannakis, Marcus Fehse, Maria Angeles Cabanero, Natalia Romano, Ashley Black, Damien Saurel, M. Rosa Palacin, Montse Casas-Cabanas
Summary: By coupling electrochemical testing to operando synchrotron based X-ray absorption and powder diffraction experiments, blended positive electrodes consisting of LiMn2O4 spinel (LMO) and layered LiNi0.5Mn0.3Co0.2O2 (NMC) were studied to understand their redox mechanism. It was found that blending NMC with LMO can enhance energy density at high rates, with the blend containing 25% LMO showing the best performance. Testing with a special electrochemical setup revealed that the effective current load on each blend component can vary significantly from the nominal rate and also changes with SoC. Operando studies allowed monitoring of the oxidation state evolution and changes in crystal structure, in line with the expected behavior of individual components considering their electrochemical current loads.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Chiara Cementon, Daniel Dewar, Thrinathreddy Ramireddy, Michael Brennan, Alexey M. Glushenkov
Summary: This Perspective discusses the specific power and power density of lithium-ion capacitors, highlighting the fact that their power characteristics are often underestimated. Through analysis, it is found that lithium-ion capacitors can usually achieve power densities superior to electrochemical supercapacitors, making them excellent alternatives to supercapacitors.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Weihao Wang, Hao Yu, Li Ma, Youquan Zhang, Yuejiao Chen, Libao Chen, Guichao Kuang, Liangjun Zhou, Weifeng Wei
Summary: This study achieved an improved electrolyte with excellent low-temperature and high-voltage performance by regulating the Li+ solvation structure and highly concentrating it. The electrolyte exhibited outstanding oxidation potential and high ionic conductivity under low temperature and high voltage conditions, providing a promising approach for the practical application of high-voltage LIBs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Martin Bures, Dan Gotz, Jiri Charvat, Milos Svoboda, Jaromir Pocedic, Juraj Kosek, Alexandr Zubov, Petr Mazur
Summary: Vanadium redox flow battery is a promising energy storage solution with long-term durability, non-flammability, and high overall efficiency. Researchers have developed a mathematical model to simulate the charge-discharge cycling of the battery, and found that hydraulic connection of electrolyte tanks is the most effective strategy to reduce capacity losses, achieving a 69% reduction.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
M. Rodriguez-Gomez, J. Campo, A. Orera, F. de La Fuente, J. Valenciano, H. Fricke, D. S. Hussey, Y. Chen, D. Yu, K. An, A. Larrea
Summary: In this study, we analysed the operando performance of industrial lead cells using neutron diffraction experiments. The experiments revealed the evolution of different phases in the positive electrode, showed significant inhomogeneity of phase distribution inside the electrode, and estimated the energy efficiency of the cells.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Jiawei Liu, Chenpeng Wang, Yue Yao, Hao Ye, Yinglong Liu, Yingli Liu, Xiaoru Xu, Zhicong Chen, Huazheng Yang, Gang Wu, Libin Lei, Chao Wang, Bo Liang
Summary: The study focuses on utilizing double conductive Ni-pads as anode collectors in micro-tubular solid oxide fuel cells. The simulation results show excellent performance and stability of DCNPs, and also highlight the potential applications in various fields.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yang Wang, Kangjie Zhou, Lang Cui, Jiabing Mei, Shengnan Li, Le Li, Wei Fan, Longsheng Zhang, Tianxi Liu
Summary: This study presents a polyimide sandwiched separator (s-PIF) for improving the cycling stability of Li-metal batteries. The s-PIF separator exhibits superior mechanical property, electrolyte adsorption/retention and ion conductivity, and enables dendrite-free Li plating/stripping process.
JOURNAL OF POWER SOURCES
(2024)