Article
Materials Science, Multidisciplinary
M. A. K. L. Dissanayake, M. S. H. Hettiarachchi, G. K. R. Senadeera, J. M. K. W. Kumari, K. Umair, T. M. W. J. Bandara, I Albinsson, M. Furlani, B-e Mellander, N. B. Chaure, O. Olusola
Summary: Poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP) electrospun polymer nanofibre-based gel electrolytes were successfully prepared by incorporating liquid electrolyte into the nanofibre membrane. The DSSCs fabricated with gel electrolyte showed an efficiency of 6.79%, while the conventional liquid electrolyte-based cells achieved 7.28% efficiency under the same conditions. Moreover, the nanofibre gel electrolyte-based cells exhibited better stability, maintaining 85.40% of initial efficiency after 120 hours.
BULLETIN OF MATERIALS SCIENCE
(2023)
Article
Energy & Fuels
Dheeraj Devadiga, Muthu Selvakumar, Deepak Devadiga, Tantri Nagaraja Ahipa, Prakasha Shetty, Selvaraj Paramasivam, Shanmugam Senthil Kumar
Summary: In this study, the photovoltaic capabilities of a metal-free organic dye (CDIB) as a sensitizer and co-sensitizer for dye-sensitized solar cells (DSSCs) were investigated. The efficiency of the DSSC with CDIB sensitizer and IL-15% electrolyte reached 1.86%. Furthermore, the power conversion efficiency of DSSC with co-sensitized dye was increased by 23.29%, mainly due to an increase in short-circuit current density and open-circuit voltage.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Polymer Science
Mi-Ra Kim, Thanh Chung Pham, Hyun-Seock Yang, Sung Heum Park, Songyi Lee
Summary: A new type of polymer matrix electrolyte based on modified polybutadiene has been developed to improve the stability of dye-sensitized solar cells. The DSSC device using the modified PB matrix electrolyte showed improved conductivity and charge transfer ability, leading to outstanding stability.
Review
Chemistry, Multidisciplinary
Sultana Rahman, Abdul Haleem, Muhammad Siddiq, Muhammad Khalid Hussain, Samina Qamar, Safia Hameed, Muhammad Waris
Summary: The financial progress of a country depends heavily on the energy sector, which is crucial for the growth and development of various industries. The use of renewable resources is essential to overcome the energy crisis and reduce the negative impact of hydrocarbon fuels on the environment. This review focuses on the dyes used in dye-sensitized solar cells (DSSC) and discusses the progress in both inorganic and natural dyes.
Article
Chemistry, Physical
YiFan Tang, Yuchuan Xiong, Liping Wu, Xin Xiong, Tao Me, Xianbao Wang
Summary: A composite ionogel-inMXene electrolyte (CIME) based on PVDF-HFP and MXene is designed, which exhibits high Li+ transference number and ionic conductivity. The CIME shows excellent cycle stability and electrochemical performance in solid-state lithium-metal batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Yosef Nikodimos, Wei-Nien Su, Kassie Nigus Shitaw, Shi-Kai Jiang, Ljalem Hadush Abrha, Misganaw Adigo Weret, Semaw Kebede Merso, Teklay Mezgebe Hagos, Chen-Jui Huang, Keseven Lakshmanan, Wei-Hsiang Huang, Chia-Yu Chang, Jhih-Min Lin, She-Huang Wu, Chun-Chen Yang, Bing Joe Hwang
Summary: In this study, an electrospun gel polymer electrolyte (GPE) membrane, integrated with its Cu foil collector (Cu@GPE), was prepared. The Cu@GPE acts as both electrolyte and artificial solid-electrolyte interphase (ASEI), and the strong electrostatic interaction between the fiber sheet and the Cu foil collector positively affects the fluidity of deposited Li. The Cu@GPE|Li cell showed outstanding performance even at high current density, and when coupled with LiNi0.33Mn0.33Co0.33O2 (NMC), the Cu@GPE|NMC AFLMB exhibited superior performance compared to Cu|cGPE|NMC.
ENERGY STORAGE MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Z. L. Goh, Norshahirah M. Saidi, N. K. Farhana, Shahid Bashir, Javed Iqbal, K. Ramesh, S. Ramesh, S. Wageh, Abul Kalam
Summary: In this study, hydroxypropyl cellulose (HPC)-based gel polymer electrolytes with different alkali metal iodide salts were investigated. The addition of potassium iodide (KI) salt resulted in the highest ionic conductivity, followed by sodium iodide (NaI) and lithium iodide (LiI). Furthermore, the incorporation of sonochemically synthesized cobalt oxide (Co3O4) nanoparticles into the KI sample further improved the ionic conductivity, reduced the activation energy and degree of crystallinity of the electrolyte. Dye sensitized solar cells assembled with the developed gel polymer electrolytes showed improved short-circuit current density and efficiency. The electrolyte containing 7 wt% of Co3O4 nanoparticles achieved the best ionic conductivity and photovoltaic performance.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Chemistry, Multidisciplinary
Devanadane Mouraliraman, Nitheesha Shaji, Sekar Praveen, Murugan Nanthagopal, Chang Won Ho, Murugesan Varun Karthik, Taehyung Kim, Chang Woo Lee
Summary: The development of gel polymer electrolytes (GPEs) has the potential to enhance the safety and performance of lithium-ion batteries (LIBs). This study presents a GPE based on PVDF-HFP/PMMA/PVAc, which exhibits high ionic conductivity and excellent cyclic performance in NCM811/Li half-cell. The results demonstrate a promising strategy for maintaining capacity retention, safety, and stable cyclic performance in rechargeable LIBs.
Article
Chemistry, Analytical
Kaili Luo, Lingguang Yi, Xiaoyi Chen, Li Yang, Changfei Zou, Xiyuan Tao, Hui Li, Tianjing Wu, Xianyou Wang
Summary: The novel composite gel polymer electrolytes membrane modified by LATP shows higher ionic conductivity, wider electrochemical window, higher lithium-ion transference number, and good mechanical properties. Therefore, PVDF-HFP-based composite GPEs have potential application prospects in high-performance lithium metal batteries.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Ruling Huang, Ruochen Xu, Jiangtao Zhang, Jiayun Wang, Tianyi Zhou, Mingyi Liu, Xiaolong Wang
Summary: A flexible gel polymer electrolyte (GPE) based on poly(vinylidene fluoride-cohexafluoropropylene)-butanedinitrile (PVDF-HFP-SN) was successfully synthesized. The GPE exhibited high ionic conductivity and Li-ion transference number, leading to improved cycling stability and performance of lithium-ion batteries.
Article
Materials Science, Multidisciplinary
Sadia Yasmeen, Yasir Qayyum Gill, Rabia Nazar, Umer Mehmood, Faisal Iqbal, Hooriya Qaswar, Zeeshan Ahmed
Summary: Conductive polymer blend gel electrolytes improve the stability of dyesensitized solar cells by reducing leakage and enhancing electrode adhesion. In this study, polyvinylpyrrolidone (PVP) and polyaniline (PANI) blends were synthesized through in-situ polymerization and characterized using various methods. The optimal composition of the electrolyte solution was selected, and the conductivity was found to be influenced by salt concentration. Solid-state dye-sensitized solar cells with gel electrolytes exhibited better long-term stability compared to conventional cells.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Zichuan Lv, Shuai Zhou, Hao Huang, Huiping Du, Hui Chen, Yuxia Li, Meng-Chang Lin
Summary: This study develops a polymer gel electrolyte by embedding a non-flammable ionic liquid into a matrix, aiming to address the issues of traditional liquid electrolytes. The electrolyte exhibits favorable performance in dual-graphite batteries and shows potential for achieving higher energy density and robustness.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Metallurgy & Metallurgical Engineering
Lu Liu, Xiaodong Wang, Chenhui Yang, Peng Han, Lei Zhang, Li Gao, Zirui Wu, Bingxin Liu, Ruiping Liu
Summary: A semi-interpenetrated polymer electrolyte based on PVdF-HFP was synthesized with high room temperature ionic conductivity and mechanical strength, showing potential for improving the performance of lithium metal batteries.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2021)
Article
Polymer Science
Huda Abdullah, Savisha Mahalingam, Nur Aisyah Abu Bakar, Abreeza Manap, Mohd Hafiz Dzarfan Othman, Md Akhtaruzzaman
Summary: The addition of Fe2O3 can improve the efficiency of DSSC, however, an excessive amount can impede electron transport. The optimal concentration is found to be 0.2% for efficient performance.
Article
Polymer Science
Ahalya Gunasekaran, Hsuan-Ying Chen, Vinoth Kumar Ponnusamy, Andrea Sorrentino, Sambandam Anandan
Summary: Dye-sensitized solar cells have gained popularity for their environmental friendliness and low cost. This study successfully synthesized PLA with different PDI and developed a high ionic conductivity polymer gel electrolyte (PGE) for the solar cells, achieving a photocurrent conversion efficiency of 5.64%.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Engineering, Environmental
Kun-Mu Lee, Wei-Hao Chiu, Yu-Hsiang Tsai, Chao-Shian Wang, Yu-Tai Tao, Yan-Duo Lin
Summary: A new donor-acceptor-donor type hole-transporting material CB was synthesized and used in fully printed PSCs, achieving an impressive power conversion efficiency of up to 21.09% with improved long-term stability. The CB-based devices showed better performance compared to those using doped spiro-OMeTAD under the same conditions, demonstrating CB's potential as a promising candidate for high-performance fully printable PSCs.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Chien-Chung Hsu, Sheng-Min Yu, Kun-Mu Lee, Chuan-Jung Lin, Bo-Yi Liou, Fu-Rong Chen
Summary: In this study, a perovskite solar cell using inorganic nickel oxide as a hole transport layer is developed. The power conversion efficiency is improved by optimizing the thickness of the nickel oxide layer. The NiOx-based PSC exhibits superior performance compared to the PEDOT:PSS organic HTL-based PSC after stability testing.
Article
Energy & Fuels
Shun-Hsiang Chan, Yin-Hsuan Chang, Meng-Huan Jao, Kai-Chi Hsiao, Kun-Mu Lee, Chao-Sung Lai, Ming-Chung Wu
Summary: The presence of toxic lead in perovskite solar cells hinders their commercialization. This study investigates the effects of adding phenethylammonium chloride as an additive to improve film formation and enhance the efficiency and stability of perovskite solar cells.
Article
Polymer Science
Dharuman Chandrasekaran, Wei-Hao Chiu, Kun-Mu Lee, Jian-Ming Liao, Hsien-Hsin Chou, Yung-Sheng Yen
Summary: In this study, two novel organic photovoltaic materials X1 and X2 were synthesized and their photovoltaic performances were evaluated. The devices based on these materials exhibited good efficiency in perovskite solar cells.
Article
Chemistry, Multidisciplinary
Kun-Mu Lee, Shun-Hsiang Chan, Chang-Chieh Ting, Shih-Hsuan Chen, Wei-Hao Chiu, Vembu Suryanarayanan, Jen-Fu Hsu, Ching-Yuan Liu, Ming-Chung Wu
Summary: In this study, non-ionic surfactant Tween 20 was added into the MAPbI(3) perovskite layer, and a high-quality perovskite film was fabricated using the thermal-assisted blade-coating method. Tween 20 effectively passivated defects and traps in the perovskite films, resulting in higher photoluminescence intensity and longer carrier lifetime. At the optimal concentration of 1.0 mM, the performance of the perovskite solar cell was significantly enhanced, with a champion power conversion efficiency of 18.80%.
Article
Engineering, Environmental
Kun-Mu Lee, Seid Yimer Abate, June Hung Yang, Wei-Hao Chiu, Seoungjun Ahn, Sie-Rong Li, Kang-Ling Liau, Yu-Tai Tao, Yan-Duo Lin
Summary: Two new spirocore-based HTMs were synthesized and used in perovskite solar cells. The experiments showed that these materials exhibited excellent thermal stability, photophysical properties, electro-chemical properties, charge-transporting abilities, and film-forming properties. The fabricated solar cells showed significantly higher power conversion efficiency compared to traditional cells, and also demonstrated better long-term stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Kai -Chi Hsiao, Yen-Fu Yu, Ching-Mei Ho, Meng-Huan Jao, Yu -Hsiang Chang, Shih-Hsuan Chen, Yin-Hsuan Chang, Wei-Fang Su, Kun-Mu Lee, Ming-Chung Wu
Summary: Perovskite solar cells with high efficiency are seen as a promising solution for renewable energy, but the presence of toxic lead and its stability in the environment have raised concerns. This study focuses on using a lead-free material as the active layer in perovskite solar cells and doping the carrier transporting layers to improve efficiency. The devices showed good stability and maintained their high efficiency even after prolonged exposure to ambient conditions. These findings suggest that the lead-free perovskite material has potential for large-scale production.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Gaurav Kumar Silori, Subashchandrabose Thoka, Kuo-Chuan Ho
Summary: The applicability of nanofillers in gel polymer electrolyte (GPE)-based devices has significantly increased in the past decade. However, the development of their applicability in GPE-based electrochromic devices (ECDs) has been limited due to challenges such as optical inhomogeneity, transmittance drop, and poor electrolyte fabrication methodologies. In this study, a reinforced polymer electrolyte tailored through PVDF-HFP, BMIMBF4, and various types of mesoporous SiO2 nanofillers was demonstrated to address these issues.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Yu-Ching Huang, Zhi-Hao Huang, Tai-Yung Wang, Priyanka Chaudhary, Jen-Fu Hsu, Kun-Mu Lee
Summary: By tuning the band gaps of their active layer materials, organic photodetectors (OPDs) can display good responses in the near-infrared (NIR) region, making them useful for applications in biomedical imaging and optical communication. In this study, we used 3TT-FIC, a non-fullerene acceptor (NFA), to develop OPDs capable of operating with extremely low dark currents and high response speeds. By fine tuning the blend ratio of the donor (PM6) and acceptor (3TT-FIC), we obtained an OPD that operated at a low dark current (7.04 x 10-10 A/ cm2) at -1 V with a high value of specific detectivity (D*) (2.6 x 1013 Jones) at the wavelength of 850 nm. We also discuss the wider applicability of 3TT-FIC and its potential as an NFA in NIR OPDs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Dharuman Chandrasekaran, Shin-Jyun Liou, Wei-Hao Chiu, Lee-Che Lee, Kun-Mu Lee, Yi-Chen Wu, Hsien-Hsin Chou, Yuan Jay Chang, Yung-Sheng Yen
Summary: This study synthesized three D-7C-D type PAHs-based hole-transporting materials (HTMs) and demonstrated their efficiency in perovskite solar cells (PSCs). The PSC devices fabricated with one of the compounds, DC-1, achieved a highly efficient power conversion efficiency (PCE) of 18.09%, outperforming the devices based on DC-2 and DC-3, and slightly higher than those using the control material spiro-OMeTAD. These novel D-7C-D molecules show promising performance as HTMs for PSCs and contribute to the development of high-efficiency perovskite solar cells.
JOURNAL OF POWER SOURCES
(2023)
Article
Engineering, Electrical & Electronic
Ming-Chung Wu, Yin-Hsuan Chang, Yi-Jing Lu, Kai-Chi Hsiao, Ting-Han Lin, Jin-Mao Chang, Kai-Hsiang Hsu, Jen-Fu Hsu, Kun-Mu Lee
Summary: Researchers have explored the conversion of CO2 into carbon-based fuels through photocatalytic reactions. They fabricated a novel freestanding photocatalyst composite film by immobilizing Ag3BiI6 onto a nanocellulose transparent film. The resulting film exhibited high photocatalytic activity and stability for CO2 reduction.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Seoungjun Ahn, Wei-Hao Chiu, Hsin-Ming Cheng, Vembu Suryanarayanan, Gao Chen, Yu-Ching Huang, Ming-Chung Wu, Kun-Mu Lee
Summary: Cesium halides, such as CsCl, CsBr, and CsI, were introduced as a modulator in the precursor of perovskite films to manipulate their crystallization. The addition of CsI resulted in dense homogeneous perovskite films with high crystallinity, preferential orientation, and a pure black perovskite phase. The carrier lifetime of the perovskite films was significantly increased, leading to an improvement in the power conversion efficiency (PCE) of the small-area devices from 17.45% to 20.29%. The devices also exhibited excellent stability, maintaining 75% of the initial PCE after 350 hours of continuous irradiation. This study demonstrates the reliable application of CsI regulation for preparing high-performance perovskite solar cells.
ORGANIC ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Fang-Sian Lin, Mani Sakthivel, Miao-Syuan Fan, Chien-Hsin Wu, Guan-Lun Fong, Jiang-Jen Lin, Ru-Jong Jeng, Kuo-Chuan Ho
Summary: By combining DPPTPTA and CuCoP/CNF, a modified layer DPPTPTA@CuCoP/CNF was prepared and applied to the CE of DSSCs. The modified layer exhibits good charge separation ability and catalytic activity, leading to excellent performance in terms of photoelectric conversion efficiency and stability.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Organic
Chen-Hsin Tu, Kun-Mu Lee, Jui-Heng Chen, Chia-Hua Chiang, Shen-Chieh Hsu, Ming-Wei Hsu, Ching-Yuan Liu
Summary: Dithienothiophene (DTT), a versatile building block, has been synthesized efficiently through copper-catalysis. Pi-extension from DTT was achieved using optimized copper-catalyzed reactions, resulting in new hole-transporting materials for perovskite solar cells. The highest energy conversion efficiency of 14.67% was achieved in one of the solar devices. [Cu]-catalyzed direct C-H/C-I couplings were used as key transformations for accessing small molecular hole-transporting materials for the first time.
ORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Materials Science, Multidisciplinary
Chia-Lin Yeh, Yi-June Huang, Han-Ting Chen, Hsin-An Tsai, Chun-Ting Li, Chuan-Pei Lee, Kuo-Chuan Ho
Summary: Different cobalt phosphide particles with various morphologies were successfully synthesized and phosphorized through a simple hydrothermal method. Hierarchical charge transfer routes were established in the phosphorized particles, showing promising potential for applications in dye-sensitized solar cells.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
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)
