Article
Chemistry, Physical
Jianyuan Wu, Cho-Jen Tsai
Summary: In this study, the effects of Zn-doping on the material structure and electrochemical properties of LiCoPO4 (LCP) were explored, revealing an unreported intermediate phase Li1/2Co1-nZnnPO4 and proposing two conjectured configurations. It was found that the redox potential and conductivity of Zn-doped LCP increase with doping concentration, leading to improved rate capability, cycle life, and energy efficiency.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Electrochemistry
Pei-yao Li, Ying-de Huang, Lin-bo Tang, Han-xin Wei, Hao Fu, Zhen-jiang He, Jun-chao Zheng
Summary: A nanoscale LiNi1/3Co1/3Mn1/3O2(NCM111) material was successfully prepared via a hydrothermal lithiation process. The dissolution-recrystallization mechanism enabled the formation of nanoparticles, which shortened the diffusion channel of lithium ions and significantly improved the performance of the NCM111 material. Furthermore, W6+ doping improved the conductivity of the material and stabilized the layered structure, effectively inhibiting cation mixing.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Engineering, Environmental
Xiaoxiao Zhang, Zengshe Liu, Deyang Qu
Summary: In this study, the commercially mature ion-exchange (IX) method was explored for the first time to recover lithium from spent lithium iron phosphate (LFP) cathodes. The Li-K IX reaction using oxalic acid as the feeding solution delivered a potential product of multi-elemental fertilizer. This simple and economical technology provides a practical recycling strategy for spent LFP batteries.
Article
Engineering, Chemical
Sourav Nag, Shyamal Roy
Summary: LiMnPO4 and LiMn1-xLaxPO4 (0.01 <= x <= 0.1) nanostructures with in-situ carbon coating were synthesized by low temperature solvothermal method using Glycerol: Water (2:1) ratio as solvent. X-ray diffraction studies confirmed the orthorhombic crystal structure of LiMnPO4 and LiMn0.99La0.01PO4. The electrochemical tests showed that 1% La3+ ion doped LiMnPO4 could be a promising cathode material to improve the electrochemical stability of Lithium-ion cells at higher C-rate.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Wenxiu Hou, Chao Yan, Panrun Shao, Kun Dai, Jun Yang
Summary: This study investigates the application of Prussian blue analogues (PBAs) as electrode materials for aqueous ammonium ion batteries (AAIBs). A PANI/Na0.73Ni[Fe(CN)(6)](0.88) hybrid (PNFF) is synthesized using a covalent bond assisted engineering with in situ polyaniline (PANI) polymerization, combining the high conductivity of PANI and the stability of PBAs. It is found that the PANI content affects the electrochemical performance of PNFF, and an optimized PANI content results in enhanced reversible capacity and cycling stability. The ammonium storage mechanism of PNFF is investigated using in situ Raman and ex situ XPS/FTIR analysis, and a durable aqueous NH4+ full cell is assembled using a polyimide@MXene anode.
Article
Chemistry, Physical
Yanhong Xiang, Meiyun Huang, Youliang Jiang, Saiqiu Liu, Jian Li, Jianhua Wu, Zhixiong Liu, Ling Zhu, Xianwen Wu, Zeqiang He, Lizhi Xiong
Summary: In this study, uniform lithium-rich manganese-based cathode materials were synthesized with the assistance of 1-butyl-3-methylimidazolium chloride ionic liquid, exhibiting unique microstructures and better layered structure that improved electrochemical kinetics properties. The addition of [BMIm]Cl ionic liquid decreased charge transfer resistance and diffusion pathways of Li+ ions and electrons, leading to enhanced rate capability and cycling stability of the cathode materials. Specifically, the 0.5Li(2)MnO(3).0.5LiNi(0.5)Mn(0.5)O(2) material showed a higher initial capacity of 269.7 mAh g(-1) and a capacity retention of 93.0% after 65 cycles with the addition of 0.5 g of [BMIm]Cl ionic liquid.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Chemistry, Physical
Zhaojin Li, Jinxing Yang, Tianjia Guang, Bingbing Fan, Kongjun Zhu, Xiaohui Wang
Summary: This paper summarizes the recent progress in controlled hydrothermal/solvothermal synthesis of LiFePO4 and explores the relationship between the synthesis conditions and the nucleation-and-growth of LiFePO4. The review covers surface decoration, lattice substitution, and defect control, while also discussing new research directions and future trends in the field.
Article
Chemistry, Physical
Hye Ji Song, Seong Ho Oh, Yongho Lee, Jeonghan Kim, Taeeun Yim
Summary: Using calcium phosphate as a coating precursor for surface modification improves the stability and cycling retention of layered nickel-rich cathode materials, while preventing electrolyte decomposition at high temperatures. The artificial cathode-electrolyte interphases formed during surface modification play a key role in inhibiting undesired surface reactions and enhancing electrochemical performances.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Shiqi Guan, Zhihai Hu, Yan Dong, Qing Chang, Songdong Yuan, Jian Xiong, Guodong Jiang
Summary: By utilizing diethylene glycol as a solvent and manganese salts as doping sources, manganese doping and morphology control of olivine LiFePO(4) cathode were achieved through a simple solvothermal approach, resulting in improved lithium-ion intercalation/extraction kinetics and diffusion rate, leading to higher capacity, excellent rate capability, and satisfactory cyclability of LiFePO(4).
Article
Energy & Fuels
Longjiao Chang, Xiaolong Bi, Shaohua Luo, Shiyuan Cao, Anlu Wei, Wei Yang, Jianan Liu, Fusheng Zhang
Summary: LiMnPO4 material has excellent properties, and its electrochemical performance can be significantly improved through Mg doping, providing new ideas and methods for the development of lithium-ion batteries.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Jia-Jun Han, Ao-Ran Guo, Yan-Fang Wang
Summary: PANI/LFP composites were successfully prepared through synthesis and structural control, exhibiting excellent electrochemical performance and higher energy storage capacity compared to pure LFP materials. This is of great significance for the development of battery technology.
Article
Chemistry, Analytical
Jing Geng, Zhengguang Zou, Tianxing Wang, Shuchao Zhang, Shenglin Zhong, Wenqin Ling, Xiaoxiao Peng, Xixi Hu
Summary: Mn and K co-doped lithium iron phosphate (LFP) cathode materials were successfully synthesized by solvothermal method. The contributions of the two dopants to the LFP were investigated using density functional theory (DFT) calculations and various characterizations. The presence of Mn improved the energy band and diffusion kinetics, while K contributed to the stabilized structure and widened diffusion channel. The co-doped LFP cathode exhibited a high capacity of 145 mAhmiddotg-1 at 5 C and maintained a 96% retention rate after 400 cycles. The interaction between the two doping elements was discussed by comparing with a control group, and the KLMFP samples showed superior electrochemical performance in cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and charge-discharge cycling tests.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Jie Liu, Zhengguang Zou, Shenglin Zhong, Shuchao Zhang, Huanhuan Zhang
Summary: This study synthesized Mg-doped LiNi0.8-xMgxCo0.1Mn0.1O2 material using solvothermal and calcining method. By inhibiting cation mixing effect, the performance of the material was improved.
Article
Chemistry, Physical
Qing Liu, Lei Zhong, Yujiao Guo, Mingwu Xiang, Changwei Su, Ping Ning, Junming Guo
Summary: The single crystal truncated octahedral boron-doped LiMn2O4 exhibits high electrochemical performance with excellent capacity retention under different conditions, making it a promising cathode material for high-performance lithium ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Electrochemistry
Benjamin Raj, Manoj Kumar Sahoo, Aleksandar Nikoloski, Pritam Singh, Suddhasatwa Basu, Mamata Mohapatra
Summary: The rapid growth of lithium-ion batteries in electronic devices and the increasing use of electric vehicles will lead to a significant amount of lithium waste. Recycling these batteries is important for environmental and health reasons. Direct recycling technologies, such as hydrothermal, ionothermal, electrochemical, and molten salts, can regenerate the electrodes without the need for intensive energy or chemicals, saving costs and reducing waste. This article discusses the obstacles, commercialization potential, and recommendations for developing ecologically friendly recycling technologies towards a circular economy.
BATTERIES & SUPERCAPS
(2022)
Article
Materials Science, Multidisciplinary
Yeshu Tan, Jianrui Feng, Liqun Kang, Longxiang Liu, Fangjia Zhao, Siyu Zhao, Dan J. L. Brett, Paul R. Shearing, Guanjie He, Ivan P. Parkin
Summary: This paper presents a self-standing electrocatalyst, Ni2P/CoP nanosheet, fabricated on three-dimensional Ni foams by two facile steps, which exhibits high activity and stability for the hydrogen evolution reaction (HER) in different electrolytes. The as-prepared electrocatalyst demonstrates remarkable HER performance in neutral and alkaline media, and maintains excellent chemical stability. It shows great potential for efficient hydrogen production by re-utilizing wastewater resources.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Physical
Velia F. Valdes-Lopez, Luis Castanheira, Gareth Hinds, Thomas Bacquart, J. I. S. Cho, Tom Mason, Paul R. Shearing, Daniel J. L. Brett
Summary: Carbon monoxide (CO) poisoning is a challenge for polymer electrolyte membrane fuel cells (PEMFCs). This study investigates the dynamics of CO poisoning in galvanostatically operated cells by measuring the anode overpotential at different locations. It was found that the region closest to the inlet was poisoned more rapidly with higher CO coverage, and the distribution of CO coverage was affected by varying CO concentration and local conditions. Complex oscillations of cell voltage and anode overpotential were observed and correlated with CO oxidation rate. It was also identified that there were dominant coupling areas for different processes in the cell.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Nanoscience & Nanotechnology
Wenjia Du, Zhenyu Zhang, Francesco Iacoviello, Shangwei Zhou, Rhodri E. Owen, Rhodri Jervis, Dan J. L. Brett, Paul R. Shearing
Summary: The zinc-ion battery is a promising candidate for next-generation energy storage devices due to abundant zinc materials and high energy density. However, the formation of zinc dendrites during charge-discharge cycling hinders practical application. In this study, operando digital optical microscopy and in situ lab-based X-ray computed tomography (CT) were used to investigate the morphologies of zinc electrodeposition/dissolution in symmetric Zn||Zn cells. The results reveal the dynamic nucleation and growth of zinc deposits, heterogeneous transportation of charged clusters/particles, and evolution of 'dead' zinc particles through partial dissolution. The findings shed light on the formation mechanism of zinc dendrites and offer insights into suppressing their growth.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Multidisciplinary Sciences
T. M. M. Heenan, I. Mombrini, A. Llewellyn, S. Checchia, C. Tan, M. J. Johnson, A. Jnawali, G. Garbarino, R. Jervis, D. J. L. Brett, M. Di Michiel, P. R. Shearing
Summary: This study characterizes the temperature and mechanical strain of high-rate lithium-ion batteries using advanced synchrotron XRD methods. The results show that the discharge time and optimization strategy significantly affect the internal temperature of the battery under the same current. The temperature rise is caused by heat accumulation, which is influenced by the charging protocol and battery degradation.
Article
Multidisciplinary Sciences
Ying Da Wang, Quentin Meyer, Kunning Tang, James E. McClure, Robin T. White, Stephen T. Kelly, Matthew M. Crawford, Francesco Iacoviello, Dan J. L. Brett, Paul R. Shearing, Peyman Mostaghimi, Chuan Zhao, Ryan T. Armstrong
Summary: The authors utilize X-ray micro-computed tomography, deep learned super-resolution, multi-label segmentation, and direct multiphase simulation to simulate fuel cells and guide their design, addressing the challenge of accurate liquid water modelling.
NATURE COMMUNICATIONS
(2023)
Review
Chemistry, Physical
Ralf F. F. Ziesche, Thomas M. M. Heenan, Pooja Kumari, Jarrod Williams, Weiqun Li, Matthew E. E. Curd, Timothy L. L. Burnett, Ian Robinson, Dan J. L. Brett, Matthias J. J. Ehrhardt, Paul D. D. Quinn, Layla B. B. Mehdi, Philip J. J. Withers, Melanie M. M. Britton, Nigel D. D. Browning, Paul R. R. Shearing
Summary: The demand for low carbon energy storage has emphasized the importance of imaging techniques in characterizing electrode microstructures, determining key parameters for battery manufacture, operation, degradation, and failure in both next generation lithium batteries and other novel battery systems. This review summarizes recent progress and highlights in magnetic resonance, neutron, X-ray, focused ion beam, scanning and transmission electron microscopy. Two major trends are identified: the use of multi-modal microscopy in a correlative fashion, providing contrast modes across length and time scales, and the application of machine learning to guide data collection and analysis, recognizing the role of these tools in evaluating large data streams from increasingly sophisticated imaging experiments.
ADVANCED ENERGY MATERIALS
(2023)
Article
Electrochemistry
Lena Spitthoff, Markus Solberg Wahl, Jacob Joseph Lamb, Paul Robert Shearing, Preben J. S. Vie, Odne Stokke Burheim
Summary: Understanding and mitigating battery degradation is crucial for financial and environmental reasons. This study examines how degradation affects heat sources in batteries, emphasizing the need for dynamic cooling strategies throughout battery life. The research focuses on reversible and non-reversible heat sources in a commercial lithium-ion battery, and investigates the impact of thermal management strategies on degradation and cooling efficiency. The findings indicate that entropic heating plays a significant role in heat generation, resulting in temperature variations and increased thickness as the battery degrades.
Article
Nanoscience & Nanotechnology
Roxy Lee, Raul Quesada-Cabrera, Joe Willis, Asif Iqbal, Ivan P. P. Parkin, David O. O. Scanlon, Robert G. G. Palgrave
Summary: This study presents a method for quantifying crystallographic phases on a surface by fitting experimental photoemission spectra with density functional theory (DFT) models. The method was applied to map the anatase to rutile ratio across the surface of mixed-phase TiO2 thin films, and the results were correlated with photocatalytic activity measurements. The study demonstrates the potential of this method for large-scale functional and surface composition mapping in heterogeneous systems, and the unique insights provided by DFT-simulated spectra on the electronic structure origins of complex valence band spectral features.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Physics, Applied
Joe Willis, Kieran B. Spooner, David O. Scanlon
Summary: The study discovers a new material, BaSnO3, which possesses both optical transparency and bipolar dopability, offering a potential solution for fabricating high-performance transparent p-n heterojunctions. However, the low energy oxygen vacancy hampers the achievement of metallic p-type conductivity.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Joe Willis, Romain Claes, Qi Zhou, Matteo Giantomassi, Gian-Marco Rignanese, Geoffroy Hautier, David O. Scanlon
Summary: This study investigated the charge transport properties and defect chemistry of copper iodide (CuI) using various modeling techniques. It discussed the limitations to charge transport mechanisms at different carrier concentrations and their implications for future device performance. The research found that poor dielectric response led to extensive scattering from ionized impurities at high carrier concentrations, while phonon scattering dominated at lower concentrations.
CHEMISTRY OF MATERIALS
(2023)
Article
Electrochemistry
Matt D. R. Kok, Anmol Jnawali, Thomas M. M. Heenan, Thomas G. Tranter, Dan J. L. Brett, Paul R. Shearing, James B. Robinson
Summary: Extending the lifetime of commercial Li-ion cells is crucial for the electrification of transport. This research uses X-ray computed tomography to study the evolution of a cylindrical Li-ion cell over an extended period. The results show a causal relationship between changes in electrode structure and capacity fade, highlighting the importance of consistent manufacturing processes and small defects in the jelly-roll.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Anh Linh Hoang, Rhodri E. Owen, George Tsekouras, Dan J. L. Brett, Gerhard F. Swiegers
Summary: The cathode and anode of a "bubble-free" "capillary-fed" water electrolysis cell were separately investigated for bubble formation during operation. The results showed that the cell consumed only 40.4 kW h kg(-1) of hydrogen under standard commercial operating conditions and exhibited minimal bubble formation, demonstrating high electrochemical performance.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Chemistry, Multidisciplinary
Mayank Vashistha, Caoilfhionn Cliffe, Emma Murphy, Parimaladevi Palanisamy, Andy Stewart, Srinivas Gadipelli, Christopher A. A. Howard, Dan J. L. Brett, K. Vasanth Kumar
Summary: Crystallisation is an important process in pharmaceutical industries for purifying active pharmaceutical ingredients. The randomness and variation in this process make it difficult to regulate and predict the yield from batch to batch. In this study, a new technique called dotted crystallisation was proposed, where carbon dots were used to control nucleation and crystallisation processes. By adding small quantities of carbon dots to a supersaturated solution of curcumin, the nucleation rate of curcumin can be regulated and improved, leading to smaller crystals with a narrow size distribution compared to conventional cooling crystallisation.
Article
Chemistry, Multidisciplinary
K. Vasanth Kumar, Srinivas Gadipelli, Kiran A. Ramisetty, Claire Heffernan, Andrew A. Stewart, Vivek Ranade, Chris Howard, Dan Brett
Summary: During crystal growth in impure solution, impurities can hinder the growth process and slow down or even stop crystal growth. In this study, we discovered that curcumin crystals can grow in impure solution containing similar impurities, following a non-classical crystallisation pathway. We found that at high impurity concentrations, crystals can grow through sympathetic nucleation, where new growth surfaces form on seed crystals. These new surfaces act as active growth surfaces and play a crucial role in determining the crystal growth kinetics, especially at lower supersaturations. Additionally, creating artificial macrosteps on the crystal surface can not only accelerate the crystallisation rate but also control impurity transfer into the bulk crystals.
Article
Materials Science, Multidisciplinary
Xinwei Wang, Sean R. Kavanagh, David O. Scanlon, Aron Walsh
Summary: The study reveals the phenomenon of negative-U behavior in Sb2Se3, where a defect traps a second charge carrier more strongly. Utilizing a global structure searching strategy, the researchers found large atomic reconfigurations that facilitate charge redistribution. Thermodynamic analysis shows a four-electron negative-U transition for both VSe and VSb, indicating that all intrinsic point defects in Sb2Se3 exhibit amphoteric behavior.
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)
