Article
Multidisciplinary Sciences
Long Zhang, Fengcheng Wu, Shaocong Hou, Zhe Zhang, Yu-Hsun Chou, Kenji Watanabe, Takashi Taniguchi, Stephen R. Forrest, Hui Deng
Summary: Controlling matter-light interactions with cavities is crucial in modern science and technology. By integrating MoSe2-WS2 heterobilayers in a microcavity, cooperative coupling between moire-lattice excitons and microcavity photons has been established, providing versatile control of both matter and light. This moire polariton system combines strong nonlinearity and microscopic-scale tuning of matter excitations, offering a platform to study collective phenomena from tunable arrays of quantum emitters.
Article
Chemistry, Physical
Yue-E Huang, Weilin Lin, Chenguang Shi, Li Li, Zhixin Chen, Xiao-Ying Huang, Xiaohui Wu, Ke-Zhao Du
Summary: This study investigates the performance of a novel metal sulfide PbTiS3 as an anode material for lithium ion batteries. The results show that PTS has a reversible conversion-alloying mechanism, strong structural integration, and interaction with graphene oxide, which helps stabilize its structure during long-term cycling. The fabricated LIBs anode exhibits high reversible capacity and outstanding high-rate capability.
Article
Chemistry, Physical
Nikhilesh Maity, Pooja Srivastava, Himani Mishra, Ravindra Shinde, Abhishek Kumar Singh
Summary: This study demonstrates the generation of linearly polarized, anisotropic intra- and interlayer excitonic bound states in the transition metal monochalcogenide (TMC) GeSe/SnS van der Waals heterostructure, showing dramatic variation in excitonic energies and optical absorption spectrum under compressive/tensile biaxial strain. The changes in excitonic energies and optical band gap are attributed to the shift in effective dielectric constant and band dispersion upon the application of biaxial strain, showing potential applications in optoelectronics and optical quantum computers.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Zhouxiaosong Zeng, Cuihuan Ge, Kai Braun, Martin Eberle, Yufan Wang, Biyuan Zheng, Chenguang Zhu, Xingxia Sun, Lanyu Huang, Ziyu Luo, Ying Chen, Huigao Duan, Shuangyin Wang, Dong Li, Fei Gao, Anlian Pan, Xiao Wang
Summary: In this study, van der Waals heterostructure photodetectors based on MoS2/WSe2 p-n and n-n junctions were constructed and the picosecond photoresponse was manipulated by combining photovoltaic and photothermoelectric effects. The experiments showed that a TRPC peak at zero time delay was observed in the n-n junction device with a short decay time, while a TRPC dip was observed in the p-n junction and pure WSe2 devices, indicating opposite current polarities between PV and PTE. By modulating the ultrafast photocurrent, a transition from a peak to a dip was realized, and detailed carrier transport dynamics were analyzed.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Shaochun Zhang, Mina Maruyama, Susumu Okada, Mengsong Xue, Kenji Watanabe, Takashi Taniguchi, Kazuki Hashimoto, Yasumitsu Miyata, Ruben Canton-Vitoria, Ryo Kitaura
Summary: This study reports the observation of the photovoltaic effect in a WS2/MoS2 van der Waals heterostructure. Light excitation of WS2/MoS2 at a wavelength of 633 nm leads to a photocurrent without applying bias voltages.
Article
Optics
Simon J. U. White, Tieshan Yang, Nikolai Dontschuk, Chi Li, Zai-Quan Xu, Mehran Kianinia, Alastair Stacey, Milos Toth, Igor Aharonovich
Summary: Researchers have demonstrated an approach to electrically modulate quantum emitters in an hBN-graphene van der Waals heterostructure. They showed that applying a bias across the device can reversibly activate and modulate quantum emitters in hBN, providing a new avenue for the development of scalable quantum technologies.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Leihao Feng, Xi Zhang, Quan Zheng, Ya Nie, Gang Xiang
Summary: The structural and electronic properties of a two-dimensional SiAs2/GeAs2 van der Waals heterostructure and its applications have been investigated by first-principles calculations and Silvaco Atlas simulations. The stable heterostructure exhibits an indirect bandgap of 0.99 eV in type II band alignment, making it suitable for light detection and energy harvesting. By applying an appropriate electric field, it can exhibit a direct bandgap up to 0.66 eV. The results show that the band alignment of the heterostructure can be tuned between type II and type I for various applications.
Article
Chemistry, Multidisciplinary
Bing Zhao, Roselle Ngaloy, Sukanya Ghosh, Soheil Ershadrad, Rahul Gupta, Khadiza Ali, Anamul Md. Hoque, Bogdan Karpiak, Dmitrii Khokhriakov, Craig Polley, Balasubramanian Thiagarajan, Alexei Kalaboukhov, Peter Svedlindh, Biplab Sanyal, Saroj P. Dash
Summary: This article demonstrates the robust room-temperature operation of lateral spin-valve devices using the vdW ferromagnet Fe5GeTe2 in heterostructures with graphene. Spin-dynamics measurements reveal multidirectional spin polarization at the Fe5GeTe2/graphene interface. Density functional theory calculations and Monte Carlo simulations reveal significantly canted Fe magnetic moments in Fe5GeTe2 along with the presence of negative spin polarization at the interface. These findings open opportunities for vdW interface design and applications of vdW-magnet-based spintronic devices at ambient temperatures.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Fan Ye, Arnob Islam, Teng Zhang, Philip X-L Feng
Summary: This study demonstrates atomically thin MoS2-graphene vdW heterostructure nanoelectromechanical resonators with ultrawide frequency tuning, achieving the largest tuning range to date. The 2D Young's moduli of the constituent crystals play a crucial role in determining the tuning range, with materials having lower 2D moduli showing wider tuning ranges.
Article
Chemistry, Multidisciplinary
Yang Liu, Song Liu, Baichang Li, Won Jong Yoo, James Hone
Summary: Robust ferroelectricity can be achieved in nonferroelectric semiconducting 2H-WSe2 by creating R-stacked bilayers with broken inversion symmetry. The phase transition order of this artificial ferroelectric heterostructure is first-order, with a measured Curie temperature of 353K. The stability of this artificial ferroelectric material is demonstrated through consecutive polarization measurements.
Article
Chemistry, Multidisciplinary
Youn Sung Na, June-Chul Shin, Eunji Ji, Woong Huh, Inhyuk Im, Kenji Watanabe, Takashi Taniguchi, Ho Won Jang, Chul-Ho Lee, Gwan-Hyoung Lee
Summary: 2D materials have intriguing properties but are highly sensitive to external conditions, requiring passivation to maintain stability. This study demonstrates a novel method for fabricating stable irreversible conductive filament contacts on hBN-passivated 2D channels.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Run-Sen Zhang, Jin-Wu Jiang
Summary: This study investigates the impact of misfit strain on buckling instability in graphene/MoS2 heterostructures. Negative misfit strain reduces buckling stability, while small positive misfit strain enhances it. Large positive misfit strain can decrease the buckling stability by shifting the initiation of buckling from graphene to MoS2 layer.
Article
Nanoscience & Nanotechnology
Vinicius G. Garcia, Nathanael N. Batista, Diego A. Aldave, Rodrigo B. Capaz, Juan Jose Palacios, Marcos G. Menezes, Wendel S. Paz
Summary: In this study, a van der Waals heterostructure consisting of isostructural nanoribbons of Sb2S3 and Sb2Se3 is demonstrated to have a direct band gap and a typical type-II band alignment, making it suitable for optoelectronics and solar energy conversion. Optical absorption spectra show broad profiles in the visible and UV ranges for all configurations, indicating their potential for photodevices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Huije Ryu, Yangjin Lee, Hyun-Jung Kim, Seoung-Hun Kang, Yoongu Kang, Kangwon Kim, Jungcheol Kim, Blanka E. Janicek, Kenji Watanabe, Takashi Taniguchi, Pinshane Y. Huang, Hyeonsik Cheong, In-Ho Jung, Kwanpyo Kim, Young-Woo Son, Gwan-Hyoung Lee
Summary: This study discusses the characteristics of phase transition in 2D materials, demonstrates the phase transition properties of MoTe2 at different layers, and explores how to control the vertical and lateral phase transitions of MoTe2 by inserting graphene layers and controlling the thickness of heterostructures.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Analytical
Seyedali Hosseini, Azam Iraji Zad, Seyed Mohammad Mahdavi, Ali Esfandiar
Summary: A tunable gain SnS2/InSe Van der Waals heterostructure photodetector was studied, utilizing the favorable properties of two-dimensional materials such as SnS2 and InSe. The device showed high photoresponsivity and detectivity, making it a potential candidate for commercial visible image sensors.
Article
Chemistry, Multidisciplinary
Bing Hu, Wei-Yang Wen, Hai-Yan Sun, Yan-Qi Wang, Ke-Zhao Du, Wen Ma, Guo-Dong Zou, Zhao-Feng Wu, Xiao-Ying Huang
Summary: In this study, a new hierarchical assembly strategy is proposed for the rational and precise construction of complex single-crystal superstructures. Unprecedented superclusters in Rubik's cube form are formed by aggregating oxohalide clusters as secondary building units. These Rubik's cubes then act as isolable tertiary building units to assemble diverse single-crystal superstructures. The captured intermediate assembly states provide a profound understanding of the assembly process at the atomic level.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Ya-Nan Wu, Li-Li Zhu, Yi Zhao, Si-Yu Xu, Pei-Wen Huang, Bi-Cui Chen, Zi-Yang Huang, Xiao-Ying Huang, Jin Chen, Ke-Zhao Du
Summary: In this study, mussel-inspired chemistry was combined with two-dimensional HOIPs, resulting in the synthesis of a new crystal (HDA)2PbBr4. The organic cation dopamine was introduced into PDA to form (HPDA)2PbBr4. The dissolved inorganic components of layered perovskite in DMF solution, combined with H2O2, greatly facilitated the polymerization of dopamine. The resulting material, PDA-1, exhibited excellent semiconductor properties and robust adhesion, allowing for the formation of self-adhesive photoelectric coatings on various interfaces.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Zi-Wei Li, Bin Tan, Zhao-Feng Wu, Xiao-Ying Huang
Summary: A three-dimensional strontium coordination polymer of Sr-2(tcbpe) was synthesized and developed as a fluorescent sensor for Fe3+ ions with sensitive and selective detection behavior.
Article
Chemistry, Multidisciplinary
Yuexin Yao, Haiyan Sun, Yanling Guo, Cheng Cheng, Tinghui Zhuang, Jiating Liu, Meiling Feng, Xiaoying Huang
Summary: In this study, a two-dimensional rare earth phosphate material, K3Nd(PO4)(2), was found to efficiently adsorb Sr2+ ions from aqueous solutions, which is of great significance for the removal of radioactive strontium from the water environment. The maximum adsorption capacity of K3Nd(PO4)(2) for Sr2+ was 42.35 mg/g, and the removal efficiency within 24 h was 87.47%. It exhibited good affinity with Sr2+ ions in neutral or high alkaline environments. This research provides new insights into the future development of rare earth phosphates as ion exchange materials for radionuclide remediation.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Physical
Yue-E Huang, Pei-Wen Huang, Yu Zhong, Hou-Yang Zhong, Wei-Lin Lin, Xian Lu, Xing-Hui Qi, Xiao-Ying Huang, Ke-Zhao Du, Xiao-Hui Wu
Summary: This study investigates the influence of carbon-based negative electrode materials in flexible lithium-ion batteries (LIBs). Due to the strong intercalation ability of Li+, the initial columbic efficiencies (ICEs) of carbon-based negative electrode materials are low. By utilizing electrostatic potential, inorganic lithium salts, and graphene oxide (GO) with opposite zeta potential in ethanol, successful prelithiation of GO-based SnTiS3 anodes is achieved. Prelithiated GO matrix with enlarged layer distance improves ion conductivity and suppresses Li consumption. As a result, prelithiated free-standing membranes as negative electrodes for LIBs demonstrate significantly improved ICEs and capacity utilization. This strategy provides new insights for high-performance flexible wearable energy storage devices with prelithiated free-standing electrodes.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Yan-Ling Guo, Hai-Yan Sun, Xi Zeng, Tian-Tian Lv, Yue-Xin Yao, Ting-Hui Zhuang, Mei-Ling Feng, Xiao-Ying Huang
Summary: Sr-90 is a dangerous artificial radionuclide that is difficult to remove from complex aqueous environments. This study focused on the efficient removal of Sr2+ ions using potassium phosphatoantimonate (1D-K2SbPO6), which showed excellent adsorption capacity and selectivity for Sr2+ ions. The mechanism of Sr2+ removal was found to be ion exchange between Sr2+ and easily exchangeable K+ ions in K2SbPO6. This work provides a potential solution for radionuclide remediation using antimonate(V)-based ion exchange materials.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Wenhua Liao, Qianqian Hu, Xiaoshan Lin, Ruibo Yan, Guanghao Zhan, Xiaohui Wu, Xiaoying Huang
Summary: Researchers have successfully prepared a YS-ZnS@C composite material by carbon coating and acid etching of ZnS, which exhibits excellent capacity and cycle life performance in lithium-ion batteries.
Article
Materials Science, Multidisciplinary
Tinghui Zhuang, Yanpeng Lin, Jiance Jin, Zhonghua Deng, Yingchen Peng, Liaokuo Gong, Zeping Wang, Kezhao Du, Xiaoying Huang
Summary: This study synthesizes a halide compound called BiBrON through a mechanochemical synthesis method, and it exhibits the highest efficiency and thermal stability among Bi-based halides as a red phosphor in white light-emitting diodes (WLEDs). It has the potential to improve the color rendering index of WLEDs.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Engineering, Environmental
Yang-Peng Lin, Sanlue Hu, Jiahao Xu, Zhizhuang Zhang, Xinghui Qi, Xuexia Lu, Jiance Jin, Xiao-Ying Huang, Qiang Xu, Zhonghua Deng, Zewen Xiao, Ke-Zhao Du
Summary: Zero-dimensional (0D) metal halides based on environmental friendliness, low cost, and earth-abundant elements have gained attention for various applications. In this study, Mn-doped 0D C4H12N2ZnX4 (X = Cl and Br) with strong green emission was developed for scintillator and white light-emitting diode (WLED) applications. Mn doping effect on the electronic structure of C4H12N2ZnX4 was investigated using spectroscopic studies and density functional theory (DFT) calculations. The results showed that Mn doping reduced the bandgap and enhanced the Mn d-d emission, resulting in high photoluminescence quantum yield (PLQY) and luminous efficacy in Mn-doped C4H12N2ZnX4-based WLEDs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Hao-Wei Lin, Yang-Peng Lin, Dan-Dan Huang, Zhi-Hua Chen, Ying-Chen Peng, Ze-Ping Wang, Ke-Zhao Du, Xiao-Ying Huang
Summary: Two isomeric ionic zero-dimensional indium bromide crystals have been isolated by changing the cooling conditions during solvothermal syntheses. The crystal 2 exhibits a higher photoluminescence efficiency due to additional hydrogen bonds and pi-pi interactions.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Zhao-Feng Wu, Chuanzhe Wang, Xingwu Liu, Kui Tan, Zhihua Fu, Simon J. Teat, Zi-Wei Li, Xiuze Hei, Xiao-Ying Huang, Gang Xu, Jing Li
Summary: In this study, a new series of CuI-based hybrid materials with tunable structures and semiconducting properties are presented. The resulting materials exhibit interesting semiconducting behaviors associated with the dimensionality of the CuI inorganic module. They also represent the first CuI-bearing hybrid chemiresistive gas sensors for NO2 with boosted sensing performance and sensitivity, comparable to the best NO2 chemiresistors reported thus far.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Haiyan Yin, Yifan Liu, Abdusalam Ablez, Yanqi Wang, Qianqian Hu, Xiaoying Huang
Summary: Two isostructural supertetrahedral T3 cluster-based chalcogenide compounds were synthesized using an ionic liquid-assisted precursor technique. It was found that the highly-dispersed In-Se cluster exhibited approximately 5 times higher photocatalytic H-2 evolution activity than that of the solid-state under visible light irradiation. On the other hand, the photocatalytic performance of the highly-dispersed In-S cluster was only slightly higher than that of the solid state due to its inferior visible-light absorption capability.
Article
Chemistry, Multidisciplinary
Huai-Yu Wu, Chun-Li Hu, Miao-Bin Xu, Qian-Qian Chen, Nan Ma, Xiao-Ying Huang, Ke-Zhao Du, Jin Chen
Summary: In this study, a new class of second-order nonlinear optical (NLO) crystals, non-pi-conjugated piperazine (H10C4N2, PIP) metal halides, represented by two centimeter-sized, noncentrosymmetric organic-inorganic metal halides (OIMHs) have been identified. H12C4N2CdI4, the first OIMH prepared, exhibits poor NLO performance due to its structure containing a CdI4 tetrahedron. However, by replacing CdI4 with a highly polarizable CdNI3 tetrahedron to obtain H11C4N2CdI3, a significant enhancement in NLO performance is achieved.
Article
Chemistry, Inorganic & Nuclear
Jiang Jiang, Zi-Wei Li, Zhi-Zhuan Zhang, Bin Tan, Zhao-Feng Wu, Xiao-Ying Huang
Summary: In this work, two metal organic frameworks (MOFs) containing {Cu2I2} clusters, Eu-CuI-INA and Sr-K-CuI-INA, were synthesized and characterized. Both materials have a three-dimensional structure with {Cu2I2} clusters coordinated by INA(-) ligands and Eu3+ or Sr2+ ions. The Sr-K-CuI-INA material exhibited sensitive fluorescence sensing behaviors towards cysteine and nitro-bearing molecules, showing potential applications in bio and explosive molecule sensing. This work provides a good reference for designing fluorescent MOF probes containing CuI molecules.
DALTON TRANSACTIONS
(2024)
Article
Materials Science, Multidisciplinary
Bin Tan, Xiu-Ze Hei, Yang-Peng Lin, Zhao-Feng Wu, Xiao-Ying Huang
Summary: In this study, the pore size of calcium-based metal organic frameworks (Ca-MOFs) was tunable and the fluorescence sensing towards a specific chemical substance was achieved by adjusting the pore size. The results showed that the pore size of Ca-MOFs could be finely regulated by altering the chemical structure of the coordinated amides, allowing for selective adsorption of different molecules.
JOURNAL OF MATERIALS CHEMISTRY C
(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)
