Article
Chemistry, Physical
Yinshen Liu, Wenjing Zhao, Kunpeng Ding, Sai Qin, Danyi Liu, Ying Chen, Yicheng Liu, Qingyu Xu, Kai Shen, Qi Fan
Summary: A novel structure for Li/Na hybrid-ion batteries with unique two-stage electrochemical reactions is proposed. This design strategy harnesses the synergistic contribution of Li+ and Na+ ions, providing an efficient solution to improve battery performance and achieve superior rate performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Shan Zhang, Peng Gao, Yasong Wang, Jing Li, Yongming Zhu
Summary: The cathodes of LiNiO2, Li[Ni0.9Mn0.1]O2, and the concentration gradient material Li[Ni0.9Mn0.1]O2 were synthesized by co-precipitation method. Tests showed that the gradient material G-LNM91 exhibited the best cycle performance among the three materials, with significant improvement in cycle performance due to manganese substitution.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Elena Makhonina, Lidia Pechen, Anna Medvedeva, Yury Politov, Aleksander Rumyantsev, Yury Koshtyal, Vyacheslav Volkov, Alexander Goloveshkin, Igor Eremenko
Summary: Li-rich Mn-based layered oxides are promising cathode materials for lithium-ion batteries, but suffer from capacity fading and voltage decay. Doping with Mg can improve the electrochemical performance, and introducing Mg in TM layers is more preferable.
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
Hanan Abdurehman Tariq, Umair Nisar, Jeffin James Abraham, Zubair Ahmad, Siham AlQaradawi, Ramazan Kahraman, R. A. Shakoor
Summary: In this study, a novel TiO2 decorated Ti3C-MXene anode for high-power lithium-ion batteries was synthesized using in-situ hydrolysis. The MXene-TiO2 nanocomposite showed significantly improved electrochemical performance compared to pristine TiO2 anode, with faster kinetics and enhanced active sites for lithium intercalation. These results indicate the potential of MXene-based nanocomposites as high-performance anodes in lithium-ion batteries.
APPLIED SURFACE SCIENCE
(2022)
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
Materials Science, Multidisciplinary
Mengtian Yu, Xuefei Wei, Xiuqin Min, Anbao Yuan, Jiaqiang Xu
Summary: Surface modification with In2O3 can improve the electrochemical performance of lithium-rich layered cathode materials, especially in terms of initial Coulombic efficiency, rate capability, and cycle stability. This modification with a moderate amount of In2O3 enhances electrical conduction and suppresses the growth of the solid electrolyte interphase film.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Dylan Wilkinson, Manik Bhosale, Marco Amores, Gollapally Naresh, Serena A. Cussen, Graeme Cooke
Summary: This study presents a novel organic cathode material, BAQIT, with excellent performance in both lithium and sodium-ion batteries, demonstrating high capacity, low solubility, and high power capabilities.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Yan Lin, Juho Valikangas, Rafal Sliz, Palanivel Molaiyan, Tao Hu, Ulla Lassi
Summary: Spinel LiNi0.5Mn1.5O4 (LNMO) is a promising cathode material for next-generation lithium-ion batteries due to its cobalt-free composition, high specific capacity, high operating voltage, low cost, and environmental friendliness. This study successfully synthesized single-crystal LNMO with optimized morphology and Mn3+ content through the sol-gel method, resulting in improved electrochemical performance.
Article
Chemistry, Physical
U. Younis, I. Muhammad, F. Qayyum, W. Wu, Q. Sun
Summary: A novel two-dimensional pentadiamond monolayer C-558 composed of pentagons and octagons is proposed, showing metallic properties and high ion adsorption sites, suitable for high-performance lithium, sodium, and potassium ion batteries.
MATERIALS TODAY ENERGY
(2021)
Article
Biochemistry & Molecular Biology
Elena V. V. Shchurik, Olga A. A. Kraevaya, Sergey G. G. Vasil'ev, Ivan S. S. Zhidkov, Ernst Z. Z. Kurmaev, Alexander F. F. Shestakov, Pavel A. A. Troshin
Summary: The development of organic electrode materials is crucial due to the increasing demand for affordable, safe, recyclable, and environmentally friendly batteries. In this study, a novel redox-active polymer consisting of a polyaniline-type conjugated backbone and quinizarin and anthraquinone units was synthesized. The polymer exhibited promising performance characteristics as a cathode material in both lithium and potassium cells, with high discharge capacity and excellent stability. The synthetic availability and low projected cost of the designed material make it suitable for practical implementation in scalable and inexpensive organic batteries, which are emerging as a sustainable energy storage technology.
Article
Chemistry, Physical
Petla Ramesh Kumar, Tomooki Hosaka, Tomoaki Shimamura, Daisuke Igarashi, Shinichi Komaba
Summary: In this study, Mg ion doping and carbon nanotube composites were used to improve the crystallinity and conductivity of KFeSO4F as a positive electrode material for potassium-ion batteries. The composite electrode demonstrated good cycling performance and capacity at a reasonable rate in a potassium-ion cell.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Mincheol Beak, Sanghyuk Park, Sangjun Kim, Jangho Park, Seongdeock Jeong, Balamurugan Thirumalraj, Goojin Jeong, Taehyeon Kim, Kyungjung Kwon
Summary: The study shows that Na from the leachate of spent LIBs can be incorporated into the resynthesized cathode active materials, which is beneficial for improving battery performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Sangjun Kim, Sanghyuk Park, Minsang Jo, Mincheol Beak, Jangho Park, Goojin Jeong, Ji-Sang Yu, Kyungjung Kwon
Summary: The study synthesized cathode active materials with varying Al content and examined the effects on physicochemical, thermal, and electrochemical properties. Results showed that increased Al content in the materials led to irregular particle shape and distribution, reduced initial charge/discharge capacity and cyclability, but improved rate capability. Residual Al was found to adversely affect capacity and cyclability, suggesting that trace amounts of Al in the materials can be tolerated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Yu-Rui Ji, Yu-Hao Chen, Peng-Fei Wang, Qin-Zhi Lai, Feilong Qiu, Yan-Rong Zhu, Ting-Feng Yi
Summary: By coating g-C3N4 on the surface of Li1.2Mn0.54Ni0.13Co0.13O2 (LMNC), its performance in lithium-ion batteries can be improved, including initial coulomb efficiency, capacity retention ratio, cyclic stability, reversible capacity, and energy density.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Paulraj Arunkumar, Sampath Gayathri, Jong Hun Han
Summary: The development of efficient and durable electrocatalysts for sustainable hydrogen production is highly desired. In this study, a highly efficient bimetallic phosphide electrocatalyst is developed by designing a metal-organic framework (MOF) as a precursor. The incorporation of nickel modulates the pore structure and surface chemistry of the catalyst, while the phosphidation process achieves phase engineering through enhanced diffusion. The resulting bimetallic phosphide electrocatalyst exhibits superior hydrogen evolution activity.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Multidisciplinary Sciences
Velmurugan Sekar, Mysoon M. Al-Ansari, Jayaraman Narenkumar, Latifah Al-Humaid, Paulraj Arunkumar, Amutha Santhanam
Summary: This study focuses on the synthesis and characterization of gold nanoparticles derived from Physalis minima. The results demonstrate that the nanoparticles possess stability, crystallinity, and suitability for biological applications.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2022)
Article
Biotechnology & Applied Microbiology
Perumal Dhandapani, Murali Santhoshkumar, Jayaraman Narenkumar, Mohamad S. AlSalhi, Paulraj Arun Kumar, Sandhanasamy Devanesan, Seenivasan Kokilaramani, Aruliah Rajasekar
Summary: This study aims to develop a reduced graphene oxide-silver nanoparticles coating on cotton fabric using photoreduction with a hydrothermal process and evaluate its antibacterial activity in a sweat environment. The results show that the coating has sustained antibacterial activity and withstands laundry durability tests. This provides an opportunity for improved functional fabrics that are exceptional at combating bacterial pathogens and holding up well to laundry durability tests.
BIOPROCESS AND BIOSYSTEMS ENGINEERING
(2022)
Article
Nanoscience & Nanotechnology
Muthulakshmi Vaikundam, Swetha Shanmugam, S. Aldawood, Paulraj Arunkumar, Amutha Santhanam
Summary: The synthesis of pectin-mediated HAP nanoparticles and HAP/pectin nanocomposites using carrot pomace pectin as a template was the focus of this study. The results showed that the nanoparticles produced at the optimal pectin concentration were pure, spherical, low crystalline, and discrete particles with reduced size, and had antimicrobial properties. In comparison to pectin-mediated hydroxyapatite, the HAP/pectin nanocomposites exhibited higher cell survival and bone mineralization, indicating their potential for biomedical applications.
APPLIED NANOSCIENCE
(2022)
Article
Engineering, Environmental
Joo Hyeong Han, Tuhin Samanta, Yong Min Park, Han Bin Cho, Jeong Wan Min, Seong Ju Hwang, Sung Woo Jang, Won Bin Im
Summary: The emission induced by self-trapped excitons (STEs) in metal halide perovskites (MHPs) has been studied, with a focus on low-dimensional MHPs. However, the formation of STEs in high-dimensional MHPs, such as hexagonal phases, is challenging. In this study, the formation of STEs in hexagonal CsCdCl3 MHPs was investigated, and the role of free excitons and STEs in the optical properties of CsCd(1-x)MnxCl3 MHPs was explored. The results offer valuable insights into the photophysical properties of MHPs and provide a promising approach for achieving high-quality, thermally, and chemically stable white-light emission.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Balakrishnan Muthukumar, Saravanan Surya, Krithiga Sivakumar, Mohamad S. AlSalhi, Tentu Nageswara Rao, Sandhanasamy Devanesan, Paulraj Arunkumar, Aruliah Rajasekar
Summary: This study conducted bioaugmentation of crude oil/motor oil contaminated soil using a mixture of novel strains Pseudomonas aeruginosa PP3 and Pseudomonas aeruginosa PP4. Four different bioaugmentation systems were implemented, and the effectiveness was monitored by investigating the total petroleum hydrocarbon (TPH) removal rate. The results showed that BS 4 (BS 3 + bacterial consortia) had the highest TPH removal rate of 67%, followed by BS 2 (BS 1 + bacterial consortia) with a removal rate of 52%. GCMS analysis revealed that BS 2 and BS 4 achieved 65% and 83% biodegradation efficiency (BE) of residual crude and motor oil contaminated soil, respectively. Plant cultivation experiments demonstrated that Lablab purpureus grew more rapidly in BS 2 and BS 4 systems compared to BS 1 and BS 2, indicating the suitability of the bioaugmented soil for plant growth.
Article
Chemistry, Multidisciplinary
Changhee Jang, Kangyong Kim, Hak-Won Nho, Seung Min Lee, Hanif Mubarok, Joo Hyeong Han, Hyeonjung Kim, Dongryeol Lee, Yangpil Jang, Min Hyung Lee, Oh-Hoon Kwon, Sang Kyu Kwak, Won Bin Im, Myoung Hoon Song, Jongnam Park
Summary: This article presents an optimized colloidal process for synthesizing uniform Cs5Cu3Cl6I2 nanocrystals with a superior quantum yield. Precise control of the synthesis parameters enables anisotropic growth and emission wavelength shifting. The synthesized nanocrystals exhibit excellent photoluminescence retention rate at high temperature and high stability under ambient conditions. Moreover, they demonstrate three-photon absorption-induced photoluminescence, indicating their potential for nonlinear optical applications. These thermally stable and highly luminescent nanocrystals overcome the limitations of conventional blue-emitting nanomaterials and provide insights into their colloidal synthesis mechanism.
Article
Materials Science, Multidisciplinary
Jinju Lee, Hansol Lee, Usik Kim, Woon Jin Chung, Won Bin Im
Summary: A remote color converter was fabricated using CsPbBr3 perovskite nanocrystal embedded glass (PNEG) as a green phosphor in a silicone (PiS) structure. The PNEG, when pasted on a glass substrate and mounted on a blue LED, exhibited enhanced thermal and photo stability compared to bulk PNEG. A white LED with a wide color gamut of up to 130% of the NTSC defined area was prepared using the remote color converter and K2SiF6:Mn4+ (KSF:Mn4+) as a red phosphor. The feasibility of a flexible remote white color converter using ultra-thin glass (UTG) as a substrate was also examined and discussed.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
Joo Hyeong Han, Tuhin Samanta, Yong Min Park, Ha Jun Kim, Noolu Srinivasa Manikanta Viswanath, Hyeon Woo Kim, Bo Kyung Cha, Sung Beom Cho, Won Bin Im
Summary: We developed zero-dimensional lead-free monoclinic phases of Cs3TbCl6 and Rb3TbCl6 metal halides that are thermally and chemically stable. These materials exhibit high light yields and low detection limits, making them suitable for radiation detection in extreme environments. Thin films of Cs3TbCl6 and Rb3TbCl6 also show improved spatial resolutions compared to a commercial Gd2O2S:Tb3+ film in our X-ray imaging system.
ACS ENERGY LETTERS
(2023)
Article
Engineering, Chemical
Kyung Won Min, Jae Ho Choi, YoonSung Jung, Young Min Byun, Won Bin Im, Hyeong-Jun Kim
Summary: This study investigated the effects of heat-treatment temperature and hot-end coating on the mechanical properties and reliability of lightweight glass bottles. Chemical strengthening at the glass transformation temperature significantly improved the hardness and impact strength of the bottles. The use of hot-end coating reduced the distribution of impact strength and increased the Weibull modulus values, enhancing the reliability of the bottles after chemical strengthening.
Article
Nanoscience & Nanotechnology
Han Bin Cho, Ju Yeon Han, Ha Jun Kim, Noolu Srinivasa Manikanta Viswanath, Yong Min Park, Jeong Wan Min, Sung Woo Jang, Heesun Yang, Won Bin Im
Summary: Quantum dot light-emitting diodes (QLEDs) are promising for display applications. Polyethylenedioxythiophene:polystyrene sulfonate (PEDOT:PSS) is commonly used as a hole injection layer (HIL) material due to its high conductivity and work function. However, PEDOT:PSS-based QLEDs have a high energy barrier for hole injection, resulting in low device efficiency. Here, we demonstrate a bilayer-HIL using VO2 and a PEDOT:PSS-based QLED, which shows an 18% external quantum efficiency (EQE), 78 cd/A current efficiency (CE), and 25,771 cd/m(2) maximum luminance. This is compared to the PEDOT:PSS-based QLED with an EQE of 13%, CE of 54 cd/A, and maximum luminance of 14,817 cd/m(2). The increase in EQE is attributed to the reduction in the energy barrier between indium tin oxide (ITO) and PEDOT:PSS by the insertion of a VO(2) HIL. Therefore, our results demonstrate the effectiveness of a bilayer-HIL in increasing the EQE in QLEDs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Tuhin Samanta, Noolu Srinivasa Manikanta Viswanath, Sung Woo Jang, Jeong Wan Min, Han Bin Cho, Joo Hyeong Han, Won Bin Im
Summary: Researchers report zero-dimensional Cs3ScCl6:Sb3+(CSC:Sb3+) nanocrystals that exhibit bright white-light emission, achieved through the combination of blue and yellow emissions of carbon dots and spin-forbidden electronic transitions of Sb3+ ions. These nanocrystals have a high photoluminescence quantum yield and high thermal stability, and can be used to fabricate single-component white-light-emitting diodes.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Joo Hyeong Han, Tuhin Samanta, Han Bin Cho, Sung Woo Jang, N. S. M. Viswanath, Yu Ri Kim, Jeong Min Seo, Won Bin Im
Summary: This study presents a new Cs3GdCl6 0D metal halide material that shows high hydrochromic upconversion luminescence (UCL) in the form of polycrystals and nanocrystals. The hydrochromic UCL color change from green to red is achieved through co-doping Yb3+ and Er3+ in polycrystals. The water-sensing probe based on this material exhibits excellent repeatability and is suitable for real-time and long-term water monitoring. Moreover, the hydrochromic UCL property is also utilized for stimuli-responsive information encryption.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Hyeon Woo Kim, Joo Hyeong Han, Hyunseok Ko, Tuhin Samanta, Dong Geon Lee, Dong Won Jeon, Woongchan Kim, Yong-Chae Chung, Won Bin Im, Sung Beom Cho
Summary: Exploring the vast and veiled chemical spaces through synthesis is crucial in solid-state materials. This study focuses on navigating metal halides, particularly the coexistence of perovskites and their derivatives, which has restricted their exploration. By combining high-throughput density functional theory calculations and machine learning, the researchers systematically explore inorganic halide perovskite derivatives, charting the chemical spaces and predicting their electrical properties and thermal stability. The successful synthesis of new Cs3LuCl6 and its application in white-light-emitting diodes showcase the potential practical applications of inorganic metal halides.
ACS ENERGY LETTERS
(2023)
Review
Engineering, Electrical & Electronic
Han Bin Cho, Jeong Wan Min, Ha Jun Kim, Noolu Srinivasa Manikanta Viswanath, Tuhin Samanta, Joo Hyeong Han, Yong Min Park, Sung Woo Jang, Won Bin Im
Summary: Zero-dimensional (0D) perovskites have attracted significant attention in optoelectronic applications due to their unique structure and optical properties. This review discusses the synthesis methods and phase stability issues of three-dimensional embedded in zero-dimensional (3D-0D) lead halide perovskites, as well as their various applications in optoelectronic devices. Future research directions are also suggested based on their potential applications.
ACS APPLIED ELECTRONIC MATERIALS
(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)
