Article
Chemistry, Analytical
Jianjun Yang, Xiaobao Yu, Yaxin Li, Guilin Cheng, Zichuan Yi, Zhi Zhang, Feng Chi, Liming Liu
Summary: This paper proposes a new type of flexible dye-sensitized solar cell (DSSC) structure with all-metal electrodes without the use of rare elements. The preparation techniques for the light-receiving layer and porous titanium dioxide (TiO2) film are analyzed. Experimental results show that different electrode material combinations can achieve different performance indicators.
Article
Engineering, Electrical & Electronic
Jung-Chuan Chou, Yu-Che Lin, Chih-Hsien Lai, Po-Yu Kuo, Yu-Hsun Nien, Jun-Xiang Chang, Geng-Ming Hu, Zhen-Rong Yong
Summary: Novel double-layer films were designed and examined for enhancing the performance of dye-sensitized solar cells. The experimental results demonstrated significant improvements in the performance of the cells, particularly in terms of localized surface plasmon resonance.
IEEE JOURNAL OF THE ELECTRON DEVICES SOCIETY
(2021)
Article
Engineering, Electrical & Electronic
Yu-Hsun Nien, Yi-Ting Wu, Jung-Chuan Chou, Chih-Sung Ho, Chih-Hsien Lai, Po-Yu Kuo, Zhen-Rong Yong, Yu-Che Lin, Ruei-Hong Syu
Summary: The effects of PbTiO3 and PbTiO3/TiO2 NFs on the characteristics of the photoanode of DSSC were studied. The results showed that they can improve the photovoltaic characteristics of DSSC, with the DSSC modified by PbTiO3/TiO2 NFs exhibiting better photoelectric conversion efficiency.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Engineering, Electrical & Electronic
Xiaojie Yang, Liwei Cai, Li Zhao, Zuhong Li, Congcong Wu, Junmei Sun, Zihui Liang, Shimin Wang
Summary: By synthesizing graphene oxide, upconversion luminescent material, and porous hollow titanium dioxide microspheres to couple with commercial P25, the light-harvesting and photoelectric performance of dye sensitized solar cells can be improved, with the power conversion efficiency reaching as high as 9.41% using the optimized photoanode structure.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Chemistry, Multidisciplinary
Wei-Hao Chiu, Kun-Mu Lee, Vembu Suryanarayanan, Jen-Fu Hsu, Ming-Chung Wu
Summary: This study compares the device structures and photoanode designs of small and large size DSSC cells, highlighting the importance of TiO2 electrode optimization and the effects of factors such as dye concentration, soaking temperature, and electrolyte injection method on cell efficiency. By improving these processes, the module efficiency and performance of the DSSC cells have been successfully enhanced.
Article
Chemistry, Physical
Sanjay Kumar Swami, Neetesh Kumar, Daniela R. Radu, Sung Woon Cho, Jongsu Lee
Summary: In this study, a post-lithium (Li) treatment on TiO2 films was performed to enhance the optoelectronic features and power conversion efficiency (PCE) of dye-sensitized solar cells (DSSCs). The Li treatment reduced defects and improved the crystallinity of the TiO2 films. DSSCs fabricated using Li-treated TiO2 films as photoanodes showed a performance improvement of approximately 20% and a PCE of 10.5%, compared to the control DSSC with a PCE of 8.7%. The enhanced performance was attributed to improved structural properties, efficient charge transport, and suppression of recombination due to the passivation of trap states.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Yu-Hsun Nien, Shang-Wen Zhuang, Jung-Chuan Chou, Chih-Hsien Lai, Po-Yu Kuo, Po-Hui Yang, Po-Feng Chen, Yu-Han Huang
Summary: Hollow microsphere structure nickel sulfide (NiS) particles were prepared using a hydrothermal method. NiS/titanium dioxide nanofibers (NiS/TiO2 NFs) were prepared by adding NiS into TiO2 nanofibers through electrospinning. Dye-sensitized solar cells (DSSCs) with NiS/TiO2 NFs photoanode showed a photovoltaic conversion efficiency (PCE) of 5.63%, which is 40.75% higher than that of DSSCs without modification. The increased specific surface area of the hollow microsphere structure of NiS and the higher porosity provided by NiS/TiO2 NFs contributed to enhanced dye adsorption and reduced transmission resistance in the DSSCs, leading to the improved performance.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Engineering, Electrical & Electronic
Yu-Hsun Nien, Zhen-Rong Yong, Jung-Chuan Chou, Chih-Hsien Lai, Po-Yu Kuo, Yu-Che Lin, Yi-Ting Wu, Ruei-Hong Syu
Summary: In this study, the addition of g-C3N4/TiO2 NFs was found to enhance the photovoltaic performance of DSSCs, with the modified DSSC achieving a photoelectric conversion efficiency of 5.22%, an increase of 27% compared to the unmodified DSSC.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Article
Chemistry, Physical
Kun Wei, Xiu Yun Gu, En Zi Chen, You Qing Wang, Zhe Dai, Zi Ran Zhu, Shi Qiang Kang, Ao Chen Wang, Xiu Ping Gao, Geng Zhi Sun, Xiao Jun Pan, Jin Yuan Zhou, Er Qing Xie
Summary: Novel dissymmetric SnO2/TiO2 side-by-side bi-component nanofibers (SBNFs) were successfully prepared by a V-channel electrospinning technique, showing improved power conversion efficiency (PCE) in DSSCs. Enhanced electron transport via SnO2 nanofibers and carrier separation at the dissymmetric SnO2/TiO2 heterojunction interface are key factors contributing to the increased PCE.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Energy & Fuels
Satish S. Patil, Rahul M. Mane, Kishorkumar Khot, Sawanta S. Mali, Chang Kook Hong, Popatrao N. Bhosale
Summary: In this study, a surfactant-assisted WO3 photoanode for DSSC was successfully designed using a single-step hydrothermal route. The surfactant's influence on the growth and photoresponse properties of dye-sensitized WO3 was investigated. The results showed improved photovoltaic performance, with a direct allowed type of electronic transition and a band gap energy ranging from 2.82 to 2.38 eV. The formation of pure hexagonal crystals and tuning in surface morphology from nanospheres to nanoflowers were also observed.
Article
Engineering, Electrical & Electronic
Zakaria Bouzid, Yasmine Halimi
Summary: The aim of this study was to realize and characterize Gratzel cells based on a natural dye sensitizer. The eucalyptus globulus extract was used as a photosensitizer and the dye was isolated from eucalyptus leaves using ethanol and acetic acid as solvents. The best-performing components were selected for the assembly of the dye-sensitized solar cells. The highest performance was achieved with the eucalyptus dye used on the diluted TiO2 layer, suggesting its potential for improving the efficiency of DSSCs.
IEEE SENSORS JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
R. Sasikala, M. Kandasamy, S. Suresh, V. Ragavendran, V. Sasirekha, N. Pugazhenthiran, S. Murugesan, S. Alex Pandian, M. N. M. Ansari, J. Mayandi
Summary: A simple chemical reduction process was used to prepare a nanocomposite of strontium titanate perovskite nanoparticles (SrTiO3 NPs) embedded in reduced graphene oxide (RGO-SrTiO3 NC). The RGO-SrTiO3 NC exhibited an optical band gap of 3.24 eV and a significantly lower crystallite size (31.69 nm) compared to SrTiO3 NPs (56.93 nm). The presence of RGO in the RGO-SrTiO3 NC was confirmed by Raman investigation, and modification of SrTiO3 by RGO was revealed by XPS analysis. The DSSC fabricated using the RGO-SrTiO3 NC photoanode showed an enhanced efficiency of 5.42% compared to SrTiO3 NPs (2.59%) due to the highly conducting RGO.
Article
Energy & Fuels
Rajkumar Senthamarai, Venkatraman Madurai Ramakrishnan, Balraju Palanisamy, Suguna Kulandhaivel
Summary: Clean and green energy is a global priority, and in this study, TiO(2) nanostructures were prepared using fruit extracts as reducing agents. The structural and optical properties of the synthesized TiO(2) nanostructures were characterized, and their performance in dye-sensitized solar cells was studied using two different dyes.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Anurag Roy, Shubhranshu Bhandari, Senthilarasu Sundaram, Tapas K. Mallick
Summary: The research utilized CeO2 nanoparticles as a light scattering layer, combined with anatase TiO2 nanocubes film to fabricate a CeO2-TiO2 hybrid photoanode, which significantly improved the power conversion efficiency of DSSCs.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Yu-Hsun Nien, Zhen-Rong Yong, Chih-Sung Ho, Jung-Chuan Chou, Chih-Hsien Lai, Po-Yu Kuo, Geng-Ming Hu, Jun-Xiang Chang, Yu-Che Lin
Summary: FePt/TiO2 nanofibers were successfully prepared and characterized, showing improved photovoltaic characteristics for dye-sensitized solar cells. The addition of FePt nanoparticles into TiO2 nanofibers led to a 16% increase in photoelectric conversion efficiency compared to unmodified cells. FePt/TiO2 nanofibers appear to be a promising candidate for enhancing DSSC performance.
IEEE TRANSACTIONS ON NANOTECHNOLOGY
(2021)
Article
Chemistry, Physical
Juanmei Liu, Jihuai Wu, Guodong Li, Qi Chen, Xia Chen, Jialian Geng, Qiang Ouyang, Weihai Sun, Zhang Lan
Summary: This study presents a simple defect passivation strategy using N-methyl-N-(thien-2-ylmethyl)amine (NMTMA) as a passivator at the interface between the perovskite layer and the hole transport layer. The NMTMA effectively reduces trap-state density and nonradiative recombination, resulting in improved power conversion efficiency (PCE) and environmental stability for the perovskite solar cells.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Xia Chen, Jihuai Wu, Guodong Li, Yitian Du, Qi Chen, Chunyan Deng, Yuan Xu, Sijia Zhu, Fangfang Cai, Juanmei Liu, Yuelin Wei, Yunfang Huang
Summary: In this study, the introduction of AMBNCl as an additive to perovskite improves the quality of perovskite crystal growth, repairs defects, and enhances the efficiency and stability of the solar cells.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Electrochemistry
Ying Wang, Jihuai Wu, Xiaobing Wang, Shibo Wang, Zhongliang Yan, Chunyan Wang, Fengxian Cao, Zhaohui Wu, Chaoran Ke, Zhang Lan, Weihai Sun
Summary: Perovskite solar cells have made great progress as a new generation photovoltaic technology. Researchers introduced an organic peroxide additive, TBPB, into a commonly used hole transport material, Spiro, to improve the performance and stability of the cells.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Fangfang Cai, Jianming Lin, Weichun Pan, Sijia Zhu, Wenjing Li, Yitian Du, Juanmei Liu, Minmin Yang, Jihuai Wu
Summary: Introducing lauric acid as a surface passivation agent in perovskite solar cells improves the stability and performance of the device by reducing carrier nonradiative combinations and enhancing the photovoltaic performance. The saturated alkyl chain of lauric acid forms a protective layer on the perovskite films, increasing their moisture resistance and environmental stability.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Mian Gao, Zhitao Shen, Gentian Yue, Chen Dong, Jihuai Wu, Yueyue Gao, Furui Tan
Summary: In this study, a novel synthesis method was developed to prepare efficient and economical non noble metal counter electrode (CE) electrocatalytic materials with good catalytic ability and stability for dye-sensitized solar cells (DSSCs). The resulting micro-nanostructured composite of CE showed high power conversion efficiency and a distinctive porous structure that facilitated fast charge transport.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Jingxu Tian, Jihuai Wu, Yuhe Lin, Jialian Geng, Jialiang Shi, Wenhui Lin, Wenxuan Hao, Chaoran Ke, Jinhui Yang, Weihai Sun, Zhang Lan
Summary: As a solution to the challenges of improving efficiency and stability in perovskite solar cells (PSCs), a cage polyamine molecule hexamethylenetramine (HMTA) is incorporated into the tin oxide electron transport layer (ETL). The introduction of HMTA improves electron extraction ability and energy-level alignment of functional layers. It also reduces defects and enhances stability, resulting in a PSC with a high power conversion efficiency of 22.37%. This research demonstrates the use of cage polyamines as an effective method for improving the performance and stability of PSCs.
Article
Chemistry, Physical
Chunyan Deng, Jihuai Wu, Yuqian Yang, Yitian Du, Ruoshui Li, Qi Chen, Yuan Xu, Weihai Sun, Zhang Lan, Peng Gao
Summary: By functionalizing the buried interface using DDSI2, the distribution and size of PbI2 clusters can be modulated, leading to improved performance of perovskite films. DDSI2 serves as a multifunctional modifier that optimizes the energy level of SnO2 and passivates buried interface defects. The hydrogen bonding and coordination between DDSI2 and perovskite reduce crystal growth rate and lattice stress, resulting in enhanced perovskite quality and modulated PbI2 distribution. The DDSI2-modified device exhibits a power conversion efficiency of 24.10% and a storage stability of 1800 h, demonstrating a unique strategy for the rational control of PbI2 in efficient and stable perovskite solar cells.
ACS ENERGY LETTERS
(2023)
Review
Materials Science, Multidisciplinary
Zeyu Song, Zhongkai Hao, Xu Zhang, Jihuai Wu
Summary: In recent years, there has been an increase in the development and research of photocapacitors. They have the potential to address the intermittent output problem of solar cells but their efficiency is much lower than that of photovoltaic devices, limiting their usability. As an intersection of photovoltaic devices and supercapacitors, the development of photocapacitors is still in its early stages and faces numerous challenges. This review provides an introduction to the classification of photocapacitors, outlines the development process, and points out the problems that need to be solved.
FUNCTIONAL MATERIALS LETTERS
(2023)
Article
Chemistry, Physical
Anling Tong, Chenwei Zhu, Huiying Yan, Chunhong Zhang, Yinuo Jin, Yunjia Wu, Fengxian Cao, Jihuai Wu, Weihai Sun
Summary: Inorganic CsPbBr3-based perovskite solar cells have excellent humidity and thermal stability, but those without a hole transport layer suffer from serious carrier recombination. To solve this problem, a passivation layer of polymethyl methacrylate (PMMA) is used between the CsPbBr3 film and carbon electrode. This PMMA layer suppresses trap sites, facilitates faster carrier extraction and transportation, improves energy level alignment, and acts as a moisture protective layer. The modified device achieved a champion PCE of 9.60% with a high VOC of 1.58 V, and negligible PCE loss after 400 hours of aging.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Yitian Du, Ying Wang, Jihuai Wu, Qi Chen, Chunyan Deng, Ran Ji, Liuxue Sun, Lina Tan, Xia Chen, Yiming Xie, Yunfang Huang, Yana Vaynzof, Peng Gao, Weihai Sun, Zhang Lan
Summary: Sodium bicarbonate is used as an additive in perovskite solar cells to improve the formation of perovskite film and enhance the crystallinity and grain structure, resulting in improved device efficiency and stability.
Article
Nanoscience & Nanotechnology
Wenhui Lin, Jihuai Wu, Jingxu Tian, Yuhe Lin, Puzhao Yang, Yongheng Huang, Xiaoyuan Jiang, Lin Gao, Ying Wang, Weihai Sun, Zhang Lan, Miaoliang Huang
Summary: The introduction of multifunctional additive TFMBI into perovskite films effectively repairs surface defects, improves the performance of perovskite solar cells, and enhances their environmental stability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Pengxu Chen, Weichun Pan, Sijia Zhu, Fengxian Cao, Anling Tong, Ruowei He, Zhang Lan, Weihai Sun, Jihuai Wu
Summary: In this study, defects in the SnO2 electron transport layer and perovskite layer were effectively passivated by introducing a multifunctional molecule TMACl. The presence of TMACl suppressed the defects in SnO2 and passivated the defects in PVK, resulting in improved device performance of perovskite solar cells. The devices based on TMACl-doped SnO2 and TMACl-modified SnO2 electron transport layers achieved higher efficiencies compared to the pristine device, and the TMACl-modified SnO2 maintained 88% of its original efficiency after 35 days of storage in a humidity-controlled chamber.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Weichun Pan, Pengxu Chen, Sijia Zhu, Ruowei He, Qingshui Zheng, Fengxian Cao, Zhang Lan, Jihuai Wu, Weihai Sun, Yunlong Li
Summary: The introduction of 6-amino-1-hexanol (HAL) with bilateral electron-donating groups between SnO2 and perovskite (PVK) optimizes the buried interfacial properties and improves the PVK film quality in perovskite solar cells. HAL acts as a molecular bridge to effectively passivate surface defects of SnO2 and stabilize the [PbI6](4)- octahedra at the buried interface. The HAL-modified device exhibits significantly enhanced photovoltaic performance and improved stability after storage.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Jinbiao Jia, Beibei Shi, Jia Dong, Zhe Jiang, Shuaibing Guo, Jihuai Wu, Bingqiang Cao
Summary: By introducing 4-iodo-1H-imidazole into the perovskite precursor, defects in the perovskite films can be prevented, resulting in a significant increase in open-circuit voltage and decreased nonradiative recombination. As a result, the device efficiency is increased by 20% compared to the control device.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yuqian Yang, Qiu Xiong, Jihuai Wu, Yongguang Tu, Tianxiao Sun, Guixiang Li, Xuping Liu, Xiaobing Wang, Yitian Du, Chunyan Deng, Lina Tan, Yuelin Wei, Yu Lin, Yunfang Huang, Miaoliang Huang, Weihai Sun, Leqing Fan, Yiming Xie, Jianming Lin, Zhang Lan, Valerio Stacchinii, Artem Musiienko, Qin Hu, Peng Gao, Antonio Abate, Mohammad Khaja Nazeeruddin
Summary: This study introduces a novel strategy of spinodal decomposition to create a poly(3-hexylthiophene)/perovskite (P3HT/PVK) heterointerface, effectively reducing energy and carrier losses in perovskite solar cells (PSCs). The P3HT/PVK heterointerface improves energy alignment, reducing energy loss at the interface, and the interpenetrating structure bridges a transport channel, decreasing carrier loss at the interface. This innovative approach achieves a remarkable power conversion efficiency of 24.53% for PSCs.
ADVANCED MATERIALS
(2023)
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)
