Article
Materials Science, Multidisciplinary
Mohamed Alla, Vishesh Manjunath, Najwa Chawki, Diwakar Singh, Subhash C. Yadav, Mustapha Rouchdi, Fares Boubker
Summary: Organic-inorganic perovskite light absorbers have made significant progress in solar cells, with single junction solar cells achieving power conversion efficiencies exceeding 25%. Further optimization of thin-films in the perovskite solar cells can lead to efficiencies exceeding 30%. The study explores the impact of thin-film thickness and properties on power conversion efficiencies and investigates temperature-dependent variation in efficiency and other parameters. The use of SCAPS-1D software for optimization can be extended to other solar cells and optoelectronic devices.
Article
Chemistry, Physical
Mirella Al Katrib, Emilie Planes, Lara Perrin
Summary: Electrodeposition was explored as an alternative technique for elaborating large-scale and homogeneous perovskite layers for photovoltaic application. The innovative electrodeposited mixed perovskites showed excellent performances in solar cell devices, with enhanced efficiency and stability. The addition of Cl in the lattice not only limits the formation of by-products but also largely increases the stability of the perovskites.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Chun-Hsiao Kuan, Hui-Hung Shen, Ching-Fuh Lin
Summary: Substituting lead (Pb) with tin (Sn) to achieve lattice contraction in cesium-based inorganic perovskite CsPbxSn1-xI3 enables the formation of photoactive phase at low temperature, showing the potential for practical applications in photovoltaic devices.
Article
Chemistry, Inorganic & Nuclear
Yanqiang Hu, Lijuan Cai, Zong Xu, Zhi Wang, Yifan Zhou, Guangping Sun, Tongming Sun, Yabing Qi, Shufang Zhang, Yanfeng Tang
Summary: By introducing potassium anthraquinone-1,8-disulfonate (DAD) in the precursor solution, we achieved an optimized CsPbI2Br perovskite solar cell with a champion efficiency of 17.38% and a record fill factor of 83.6%. The synergistic effect between the electronegative functional groups and K+ ions in the DAD structure improved the crystalline quality and stability of CsPbI2Br and enhanced carrier transport properties. The efficiency of the corresponding large-area device reached 13.20% and exhibited negligible hysteresis and enhanced long-term storage stability as well as thermal stability.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
S. M. Oner, E. Sezen, M. S. Yordanli, E. Karakoc, C. Deger, I Yavuz
Summary: The surface termination and defect formation of formamidinium lead iodide perovskite materials have been investigated. It was found that FAI-termination exhibits the most stable surface, while PbI2-termination is also relatively stable. However, certain defects can create deep-level stable charge-traps, potentially limiting the optoelectronic performance. Additionally, benzene additive has been found to effectively passivate these deep defects.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
David P. McMeekin, Philippe Holzhey, Sebastian O. Furer, Steven P. Harvey, Laura T. Schelhas, James M. Ball, Suhas Mahesh, Seongrok Seo, Nicholas Hawkins, Jianfeng Lu, Michael B. Johnston, Joseph J. Berry, Udo Bach, Henry J. Snaith
Summary: Achieving long-term stability is the key challenge for widespread commercialization of perovskite solar cells. This study introduces a high-temperature dimethyl-sulfoxide-free processing method to control the crystallization of perovskite films, effectively improving the material quality and operational stability of the devices. The encapsulated devices showed improved lifetimes, with a median T80 of 1,190 hours and a champion device reaching a T80 of 1,410 hours.
Article
Materials Science, Multidisciplinary
Tulus, Junke Wang, Yulia Galagan, Elizabeth Von Hauff
Summary: We used impedance analysis to quantify electrochemical losses in perovskite solar cells based on MAPbI(3) films. We focused on the characteristic signatures in the impedance spectra, particularly the negative capacitance hook observed at low frequencies. By applying a generalized equivalent circuit model, we determined that the negative capacitance is due to slow electrochemical dynamics. We also observed a non-linear response at higher applied voltages, indicating irreversible chemical changes in the absorber layer.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Review
Chemistry, Multidisciplinary
Kuan Liu, Patrick W. K. Fong, Qiong Liang, Gang Li
Summary: This review summarizes the recent progress in upscaling of organic-inorganic halide perovskites processed in an ambient environment. It discusses the challenges and limitations involved, as well as provides a brief overview of robust strategies for the fabrication of efficient perovskite solar cells using printing-friendly techniques under ambient conditions, which are crucial for future deployment of this technology.
TRENDS IN CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Jun Zhu, Seulyoung Park, Oh Yeong Gong, ChangHwun Sohn, Zijia Li, Zhenru Zhang, Bonghyun Jo, Wooyul Kim, Gill Sang Han, Dong Hoe Kim, Tae Kyu Ahn, Jaichan Lee, Hyun Suk Jung
Summary: The study demonstrates the use of formamidine disulfide dihydrochloride (FASCl) to manipulate intrinsic defects in formamidinium lead iodide (FAPbI(3)), leading to compact full-coverage perovskite layers with high crystallinity and a large grain size. The incorporation of FASCl results in a remarkable power conversion efficiency (PCE) of 23.11% and excellent stability under different environmental conditions, making it a promising approach for highly efficient perovskite solar cells.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Young Ran Park, Hong Hee Kim, Sangwon Eom, Won Kook Choi, Hyosung Choi, Bo Ram Lee, Youngjong Kang
Summary: Efficiency roll-off in blue light-emitting diodes is attributed to a combination of factors, including luminescence quenching, charge transfer processes at the core/shell interface, and imbalanced charge injection at the heterointerface.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Physical
Sanguk Woo, Ye Won Kim, Hyein Jung, Yeonghun Yun, Hangyeol Choi, Sangwook Lee, Yohan Yoon
Summary: This work introduces a novel real-time current-voltage absorbance spectroscopy setup for directly observing halide segregation in mixed halide perovskite solar cells under broadband light. The setup allows concurrent J-V measurements and absorbance spectra collection, enabling in situ analysis of light-induced degradation. The study emphasizes the significance of experimental conditions such as humidity and voltage injection, advocating for meticulous characterization of perovskite solar cells under realistic conditions.
Article
Chemistry, Multidisciplinary
Guadalupe Garcia-Arellano, Gaelle Trippe-Allard, Thomas Campos, Frederick Bernardot, Laurent Legrand, Damien Garrot, Emmanuelle Deleporte, Christophe Testelin, Maria Chamarro
Summary: In this study, we investigated the coherent evolution of localized electron and hole spins in a polycrystalline film of CH3NH3PbI3 at low temperature. Unexpected anisotropy was observed for the electron and hole spins.
Article
Chemistry, Multidisciplinary
Byeong Jo Kim, Gerrit Boschloo
Summary: The addition of cesium acetate (CsAc) effectively stabilizes FAMAPbI(3) perovskite, reduces trap density, extends carrier lifetime, and improves the performance and stability of perovskite solar cells in ambient conditions. The study provides insights into the crucial role of dopants and synthesis precursors in the efficiency and stability of perovskite solar cells.
Article
Chemistry, Multidisciplinary
Zhanfei Zhang, Jianli Wang, Jianghu Liang, Yiting Zheng, Xueyun Wu, Congcong Tian, Anxin Sun, Ying Huang, Zhuang Zhou, Yajuan Yang, Yuan Liu, Chen Tang, Zhenhua Chen, Chun-Chao Chen
Summary: A strategy of introducing a synthetic additive is reported to improve the performance of mixed halide perovskite solar cells, including inverted wide bandgap (1.77 eV) perovskite solar cells. This strategy enables fine regulation of crystal growth and retarded crystallization of Cs(0.2)FA(0.8)Pb(I0.6Br0.4)(3), improving its crystallinity and phase stability. The treatment promotes homogeneous crystal growth and stabilizes the crystal structure to prevent defects and halide segregation.
Article
Chemistry, Physical
Bekir Turedi, Vishal Yeddu, Xiaopeng Zheng, Do Young Kim, Osman M. Bakr, Makhsud Saidaminov
Summary: Perovskite single crystals have potential for high-efficiency photovoltaics, but higher trap density on surfaces poses a challenge; focusing on surface-trap management is crucial for maximizing the potential of single crystals.
ACS ENERGY LETTERS
(2021)
Article
Nanoscience & Nanotechnology
David Sunghwan Lee, Min Jeong Ki, Hyong Joon Lee, Jin Kyoung Park, Seok Yeong Hong, Bong Woo Kim, Jin Hyuck Heo, Sang Hyuk Im
Summary: This study successfully spray-coats the hole transporting layer (HTL) in fully scalable n-i-p-type metal halide perovskite (MHP) solar cells, achieving high efficiencies and scalability while ensuring uniform coverage and efficient charge extraction. By spray-coating all layers except the Au electrode, high efficiencies are achieved for CsPbI2Br unit cells and submodules, and an all-spray-coating process is demonstrated for submodules.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Environmental Sciences
Soo Ji Kim, Jin-Kyoung Park, Myung Sun Yeo
Summary: Deficits in executive functioning are common in Alzheimer's disease, and this study explores the effects of a dual-task-based music therapy intervention on elderly patients with early stage AD. The results show improvements in executive functioning and bimanual drum tapping task performance after the intervention. This suggests that integrating music therapy into the dual-task paradigm can be an effective way to address cognitive deficits in elderly patients with early stage AD.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Energy & Fuels
Nasir Khan, Du Hyeon Ryu, Jong-Goo Park, Hang Ken Lee, Sang Kyu Lee, Won Suk Shin, Jong-Cheol Lee, Ki-Ha Hong, Sang Hyuk Im, Chang Eun Song
Summary: This study investigates the improvement of tin-halide perovskite solar cells (THPSCs) by incorporating bromine into the perovskite precursor. The results show that the addition of bromine reduces trap density and charge recombination losses, enhances charge carrier extraction, and significantly increases the power conversion efficiency. Furthermore, the bromine-incorporated solar cells exhibit outstanding light soaking and humidity stability.
Article
Chemistry, Physical
Chohyeon Park, Jung Wook Lim, Jin Hyuck Heo, Sang Hyuk Im
Summary: In this study, color implementation of high-efficiency perovskite solar cells (PSCs) was achieved using AZO/Ag/AZO transparent multilayered electrodes. By adjusting the thickness of the top optoelectronic controlling layer, four colors (yellow, purple, blue, and green) of perovskite solar cells were successfully implemented.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Hyong Joon Lee, Jin Kyoung Park, Jin Hyuck Heo, Sang Hyuk Im
Summary: In designing efficient perovskite solar cells, the selection of suitable electron transport layers is critical. This study presents a cascaded bilayer electron transport layer (ETL) comprised of SnO2 and acetylacetone-modified TiO2 (Acac-TiO2) nanoparticles. The SnO2 layer facilitates rapid charge carrier transport while the Acac-TiO2 layer minimizes band-offset and suppresses recombination at the interface. The optimized cascaded ETL achieves a high power conversion efficiency of 23.14% in a mini module and exhibits excellent stability.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Engineering, Environmental
Min Jeong Ki, Hyong Joon Lee, Jin Kyoung Park, Jin Hyuck Heo, Sang Hyuk Im
Summary: An n-type MoO3 thin film was prepared for the first time using a solution processable Mo-peroxo strategy. An aprotic solvent was chosen as an alternative to conventional protic diluents, leading to the formation of n-type MoO3 thin films. The thin film, based on an aprotic diluent, was identified as a peroxy structure at low temperatures and converted to n-type MoO3 through thermal annealing. The n-type MoO3 thin film was used as an electron transport bilayer in perovskite solar cells, resulting in significantly improved power conversion efficiency and open-circuit voltage.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Du Hyeon Ryu, Nasir Khan, Jong-Goo Park, Dooam Paik, Bong Joo Kang, Nam Joong Jeon, Seungjin Lee, Hang Ken Lee, Sang Kyu Lee, Won Suk Shin, Jong-Cheol Lee, Hyungjun Kim, Ki-Ha Hong, Sang Hyuk Im, Chang Eun Song
Summary: This study found that l-Asparagine as a zwitterion plays a dual role in controlling the nucleation/crystallization process and improving the morphology of tin perovskite film, leading to enhanced efficiency and stability in solar cells. This work provides a facile and efficient approach to controlling the crystallization and morphology of tin-based perovskite film, and offers guidelines for further improved performance of tin-based perovskite electronic devices.
Article
Chemistry, Multidisciplinary
Su Yeon Kwon, Byungsoo Kang, Jong Hyeon Won, Chae Young Lee, Kahee Hwang, Hong Hee Kim, Donghee Park, Won Kook Choi, In Soo Kim, Gee Yeong Kim, Yoon Hee Jang, Phillip Lee, Sang Hyuk Im, Taehee Kim
Summary: This study investigates the influence of humidity and halide ions on the photovoltaic performance of perovskite solar cells treated with alkylammonium halide (OAX) under ambient conditions. The results show that high humidity and the presence of chloride ions can induce the deprotonation of methylammonium (MA(+)) ions, leading to the formation of void volumes and defects in the perovskite layer. This results in suppressed hole transfer at the interface and reduced efficiency of the solar cells.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Chemistry, Physical
Jin Kyoung Park, Jin Hyuck Heo, Hyong Joon Lee, Bong Woo Kim, Sang Woo Park, Ki-Ha Hong, Sang Hyuk Im
Summary: A breakthrough in enhancing the exciton confinement effect in perovskite light-emitting diodes (PeLEDs) is achieved by introducing a Cs4PbBr6 layer on a CsPbBr3 perovskite film through spray-coating deposition. The Cs4PbBr6 layer results in a confined energy-wall band structure and stronger exciton binding energy, leading to higher photoluminescence and electroluminescence from the PeLEDs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Tarak Nath Mandal, Jin Hyuck Heo, Sang Hyuk Im, Woo-Sik Kim
Summary: The production of pure FAPbI3 through crystallization is crucial for high-efficiency perovskite solar cells. A green crystallization process using triethylphosphate and acetonitrile as nontoxic solvent and antisolvent, respectively, is developed. This process produces pure 8-FAPbI3 single crystals with reduced trap states, resulting in a-FAPbI3 perovskite solar cells with 22.61% efficiency and good operational stability.
Article
Clinical Neurology
Min-Hyung Lee, Sang-Hyuk Im, Kwang Wook Jo, Do-Sung Yoo
Summary: This study aimed to investigate the early recanalization rate of IV-tPA in LVO stroke patients. The study found that the early recanalization rate of LVO after IV-tPA was 12.0%. In recanalized patients, there was a favorable outcome in 69.4%, while only 32.1% of non-recanalized patients had a favorable outcome. Additional IA-Tx improved treatment results in patients with P/D mismatching after IV-tPA.
JOURNAL OF KOREAN NEUROSURGICAL SOCIETY
(2023)
Article
Chemistry, Physical
Seongyun Choi, Hyong Joon Lee, Jin Hyuck Heo, Sang Hyuk Im
Summary: Efficient CsPbI2Br indoor photovoltaics (IPVs) with enlarged crystal grains and reduced interface traps are achieved through the slower crystallization process caused by the introduction of dimethylammonium iodide (DMAI), which has better solubility in perovskite solvent. The CsPbI2Br IPVs exhibit power conversion efficiencies of 35.22% (0.096 cm(2)), 35.08% (1 cm(2)), and 29.80% (25 cm(2)) under illumination of 1000 lux LED lamp, with good long-term stability under 1000 lux lamp for 1000 hours.
Proceedings Paper
Materials Science, Multidisciplinary
Hyong Joon Lee, Seok Yeong Hong, Jin Kyoung Park, Linlin Feng, Jin Hyuck Heo, Sang Hyuk Im
Summary: In this study, the effects of aperture ratios on organic-inorganic hybrid perovskite (OIHP) film were investigated. By precisely controlling aperture ratios and using indium tin oxide (ITO) transparent electrode, neutral-colored semitransparent OIHP solar cells were successfully fabricated. The introduction of a LiF interlayer between OIHP and C-60 electron transport layer (ETL) not only served as an interface passivation layer but also improved current flow rectification. The solar cells achieved high power conversion efficiency (PCE) and average visible transmittance (AVT), and showed good stability after 1000 hours of storage.
ORGANIC, HYBRID, AND PEROVSKITE PHOTOVOLTAICS XXIII
(2022)
Article
Clinical Neurology
Jin Eun, Min-Hyung Lee, Sang-Hyuk Im, Won-Il Joo, Jae-Geun Ahn, Do-Sung Yoo, Hae-Kwan Park
Summary: This study analyzed the impact of changes in mechanical thrombectomy protocol before and after the COVID-19 pandemic on procedure time and patient outcomes. The results showed that the COVID-19 protection protocol significantly increased the door-to-imaging time. The study also identified factors such as last-normal-to-door time and door-to-imaging time that significantly influenced the procedure time.
JOURNAL OF KOREAN NEUROSURGICAL SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
David Sunghwan Lee, Min Jeong Ki, Hyong Joon Lee, Jin Kyoung Park, Seok Yeong Hong, Bong Woo Kim, Jin Hyuck Heo, Sang Hyuk Im
Summary: Spray-coating technique is a scalable and time-efficient method for developing large-area metal halide perovskite solar cells (MHP). In this study, the researchers present a reliable strategy of spray-coating the hole transporting layer (HTL) using MoO2 nanoparticles and poly-(triarylamine) (PTAA) binders to ensure uniform coverage and efficient charge extraction. By spray-coating all layers except the Au electrode, they achieve high and scalable efficiencies for CsPbI2Br unit cells and submodules. Additionally, they demonstrate good long-term stability of the submodules under damp heat conditions.
ACS APPLIED MATERIALS & INTERFACES
(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)
