Article
Chemistry, Applied
Goomin Kwon, Se-Hyun Kim, Dabum Kim, Kangyun Lee, Youngho Jeon, Cheon-Seok Park, Jungmok You
Summary: The BC/PEDOT composites fabricated by vapor phase polymerization exhibit significantly lower sheet resistance than solution polymerized BC/PEDOT, while maintaining good flexibility and stability. They can be used to power green light-emitting diode (LED) lights, demonstrating excellent electronic performance.
CARBOHYDRATE POLYMERS
(2021)
Article
Nanoscience & Nanotechnology
Haoru Yang, Brandon Chow, Abayomi Awoyomi, Julio M. D'Arcy
Summary: Conducting polymers are promising transparent supercapacitor electrode materials due to their high conductivity, environmental stability, light weight, and ease of synthesis. We developed a synthetic method to covalently link poly(3,4-ethylyenedioxythiophene) (PEDOT) and glass, which overcomes the poor adhesion and low cycling stability challenges. This method enables the fabrication of current collector-free planar supercapacitor electrodes on any glass surface.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Michael C. Kohler, Fang Li, Ziqian Dong, Reza K. Amineh
Summary: Nitrate pollution in groundwater, caused by natural and synthetic factors, is harmful to human health and well-being. Current detection techniques are complex, and there is a need for a simple and cost-effective alternative. This study introduces a real-time PEDOT-based sensor for nitrate detection, which shows excellent potential in detecting nitrate ions in aqueous solutions in real time.
Review
Chemistry, Applied
Qian Wua, Bing Zhang, Yingying Lu
Summary: This review summarizes the degradation mechanisms and modification strategies of lithium cobalt oxide (LCO) batteries under high voltage conditions, focusing on structural modification, interface design, and electrolyte optimization. The review also highlights advanced characterization and monitoring techniques used to understand the structural and interfacial evolution of LCO during the charge/discharge process.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Applied
Nese Guven, Baris Yucel, Hajar Sultanova, Pinar Camurlu
Summary: In this study, two novel bipyridine-based Ru(II) complexes with different number of EDOT groups were synthesized and electrochemically polymerized to form metallopolymers. The resulting polymers exhibited ambipolar and multichromic behavior, with reversible redox activity in the cathodic region and redox activity of the conjugated backbone in the anodic region. Increasing the number of polymerizable units improved film quality and increased color diversity. Copolymerization improved band gap and switching time, further widening the color range of the polymers.
Article
Chemistry, Physical
Jiandong Liu, Mingguang Wu, Xin Li, Daxiong Wu, Huaping Wang, Junda Huang, Jianmin Ma
Summary: Constructing robust electrode electrolyte interphases (EEIs) with polar amide groups and a Li3N/LiF heterostructure can enhance the charge cut-off voltage of LiCoO2 at 4.6 V, improving the battery density and addressing the challenge of structural instability.
ADVANCED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Yuzhou Bai, Wenqin Ma, Wujie Dong, Yingkang Wu, Xue Wang, Fuqiang Huang
Summary: A modified PDOL electrolyte with an expanded electrochemical window and considerable ionic conductivity is developed by introducing high-voltage stable plasticizers. The space-confined plasticizers help construct a high-quality cathode-electrolyte interphase and improve cycling stability at high voltage.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Siwu Wang, Huajun Guo, Xinhai Li, Zhixing Wang, Jiexi Wang, Xiaohui Han, Changming Zhang, Guochun Yan
Summary: Increasing the cutoff voltage can enhance the energy density of LiCoO2-based lithium-ion batteries to meet the demand of electronic devices. However, this may lead to electrolyte decomposition and shortened cycle life. Therefore, 1,3-propanediol cyclic sulfate (PCS) is designed as a film-forming additive to improve the electrochemical performance of high-voltage batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Yaprak Subas, Semih Afyon
Summary: The addition of high-purity lithium bis(oxalate) borate as an electrolyte additive improves the cycling performance and rate capability of lithium-ion batteries by forming a protective solid electrolyte interface, preventing electrolyte decomposition and structural changes.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Jia-wen Zhang, Yan Zhang, Yuan-yuan Li, Xu Ye, Ping Wang, Yukang Xu
Summary: In this study, PEDOT@NWF composites were prepared using VPP technique on nonwoven fabric substrates, with factors affecting polymerization effect explored. The conductive nonwoven fabrics exhibited uniform PEDOT coating and were analyzed for morphological, structural, and electrical properties. Pressure sensors made from these materials showed good sensitivity and fast response time.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Saba Ghafourisaleh, Georgi Popov, Markku Leskela, Matti Putkonen, Mikko Ritala
Summary: This study successfully deposited PEDOT films using oxidative molecular layer deposition (oMLD) technique with 3,4-ethylenedioxythiophene (EDOT) and rhenium pentachloride (ReCl5). The deposited films were transparent in the visible region and showed relatively high electrical conductivities.
Article
Materials Science, Multidisciplinary
Shigeru Kobayashi, Ryota Shimizu, Yasunobu Ando, Taro Hitosugi
Summary: Significant improvements in experimental efficiency are needed for exploring new lithium-ion-conducting materials. Autonomous research based on robotic experiments is expected to solve this problem. This study demonstrates the autonomous exploration of inorganic films with improved lithium ionic conductivity.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Applied
Xiao Chen, Qiushi Sun, Jian Xie, Cheng Huang, Xiongwen Xu, Jian Tu, Xinbing Zhao, Tiejun Zhu
Summary: This study reports a unique design of a double-layer composite solid-state electrolyte (D-CSE) with electrochemical compatibility with lithium anode and LiCoO2 cathode. The D-CSE shows small thickness, high thermal stability, and good flexibility. Experimental results demonstrate the excellent performance of D-CSE in lithium metal batteries under different cycling conditions, with high capacity retention and cycling stability.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Physical
Joshua Tropp, Abijeet Singh Mehta, Xudong Ji, Abhijith Surendran, Ruiheng Wu, Emily A. Schafer, Manideep M. Reddy, Shiv P. Patel, Anthony J. Petty II, Jonathan Rivnay
Summary: The field of bioelectronics utilizes synthetic materials with optoelectronic properties to interface with living systems. Researchers have developed copolymers of anionic polyelectrolyte PEDOT-S containing amine-reactive NHS-esters, which demonstrate water solubility, electrical conductivity, and the ability to bind important amine-rich biomaterials. These biocompatible and hemocompatible copolymers show promise for next-generation bioelectronic and regenerative engineering applications.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Physical
James Kumankuma-Sarpong, Wei Guo, Yongzhu Fu
Summary: The PEDOT@YVO composite is reported as a stable cathode material for AZIBs, showing improved crystalline structure and higher initial specific capacity than pure YVO. This composite electrode demonstrates effective electric conductivity and long-term stable discharge-charge cycle performance, with retention of capacity significantly better than that of YVO. The oxygen vacancies and improved electrical conductivity of the composite contribute to its invigorated electrochemical performance, providing another avenue for enhancing the electrochemical properties of AZIBs.
Article
Materials Science, Ceramics
Evan P. Jahrman, Jamie L. Weaver, Niranjan Govind, Marko Perestjuk, Gerald T. Seidler
Summary: There is a significant need for robust, accessible, and non-destructive methods to analyze the redox properties of Fe in silicate-based minerals and glasses. The researchers expand on the commonly used Fe K-edge XANES method by studying the Fe redox distribution in four different types of silicate materials. They find that the intensity of pre-edge features is influenced by the Fe atomic environment and emphasize the importance of developing specific calibration curves. Additionally, they investigate Fe K beta X-ray emission spectroscopy as an independent method for redox assignments and explain its lack of sensitivity using electronic structure calculations.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Physical
Daniel J. Lyons, Jamie L. Weaver, Anne C. Co
Summary: Neutron depth profiling (NDP) can be used to quantitatively determine the distribution of lithium within micron-scale battery electrode materials and determine intra- and inter-electrode parameters. By lithiating a tin electrode at a constant potential and monitoring lithium movement in situ using NDP, diffusion constants are found to be in good agreement with each other, significantly reducing the reported range of values for this system.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
David P. Hoogerheide, Joseph A. Dura, Brian B. Maranville, Charles F. Majkrzak
Summary: Liquid cells are commonly used in neutron reflectometry experiments to measure the properties of materials at solid/liquid interfaces. This study focuses on characterizing and mitigating the background scattering sources in liquid cells, particularly from silicon and fluids. The use of energy-analyzed detection significantly improves the measurement quality by reducing the scattering background from silicon and fluids. The combination of thin liquid reservoirs, energy-analyzed detection, and a high-flux reflectometer allows for a background-subtracted neutron reflectivity smaller than 10(-8) from a liquid cell sample.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2022)
Article
Archaeology
Rolf Sjoblom, Eva Hjarthner-Holdar, Carolyn I. Pearce, Jamie L. Weaver, Erik Ogenhall, John S. McCloy, Jose Marcial, Edward P. Vicenzi, Michael J. Schweiger, Albert A. Kruger
Summary: The paper discusses the reasons for the vitrification phenomenon in hillforts and emphasizes the importance of evaluating different hillforts individually. By evaluating the Broborg hillfort, it is concluded that the vitrification occurred for the purpose of constructing the fort.
JOURNAL OF ARCHAEOLOGICAL SCIENCE-REPORTS
(2022)
Article
Chemistry, Physical
Ryosuke Shimizu, Diyi Cheng, Jamie L. Weaver, Minghao Zhang, Bingyu Lu, Thomas A. Wynn, Randall Burger, Min-cheol Kim, Guomin Zhu, Ying Shirley Meng
Summary: This study investigates a thin-film battery with an LNMO cathode and a solid LiPON electrolyte, and characterizes their interface before and after cycling. The system demonstrates stable performance and high Coulombic efficiency. Compared to liquid electrolyte cells, the solid LiPON electrolyte exhibits superior stability at high voltage. The findings provide important insights for accelerating the commercialization of high voltage solid or liquid electrolyte batteries.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
C. F. Majkrzak, N. F. Berk, B. B. Maranville, J. A. Dura, T. Jach
Summary: In the analysis of neutron scattering measurements, it is typically sufficient to treat the incident and scattered neutron beams as incoherent distributions of plane waves. However, for some cases, such as specular neutron reflectometry, a localized wave packet is required to describe the individual neutron's wavefunction. This study demonstrates how neutron diffraction patterns can be accurately described by associating an individual neutron with a wave packet in these cases, and illustrates the importance of considering the transverse spatial extent of the neutron wavefront.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2022)
Article
Humanities, Multidisciplinary
Edward P. Vicenzi, Thomas Lam, Jamie L. Weaver, Andrew A. Herzing, John S. McCloy, Rolf Sjoblom, Carolyn Pearce
Summary: This study analyzed dark and clear silicate glasses formed during an iron age vitrification event approximately 1500 years ago using a scanning electron microscope equipped with a micro-X-ray fluorescence (mu XRF) spectrometer. The results showed that the dark glass is enriched in iron, calcium, magnesium, titanium, etc., while the clear glass is enriched in silicon, aluminum, potassium, etc. Multivariate statistical analysis was also used to measure the area fractions of different components, providing important insights for future high-resolution and high-sensitivity studies.
Article
Nanoscience & Nanotechnology
Eric D. Rus, Joseph A. Dura
Summary: In this study, the interface between a tungsten oxide electrode and an electrolyte solution was characterized using in situ neutron reflectometry. The results revealed the formation and lithiation process of the conversion electrode, as well as the composition of different layers in the solid electrolyte interface. The findings contribute to the understanding and optimization of tungsten electrodes and lithium-ion batteries.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Changmin Shi, Tanner Hamann, Saya Takeuchi, George V. Alexander, Adelaide M. Nolan, Matthew Limpert, Zhezhen Fu, Jonathan O'Neill, Griffin Godbey, Joseph A. Dura, Eric D. Wachsman
Summary: Lithium garnet Li7La3Zr2O12 (LLZO) is a promising solid electrolyte for lithium-sulfur batteries due to its high ionic conductivity and chemical stability. However, using Ta-doped LLZO as a solid electrolyte has resulted in infinite charge time and low capacity in Li-S cells. By physically separating the sulfur cathode and LLZO with a PEO-based interlayer, high initial discharge capacity and energy density can be achieved without polysulfide shuttle.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Physics, Applied
S. Sheffels, P. P. Balakrishnan, M. Huang, S. Muramoto, J. A. Borchers, J. A. Dura, A. J. Grutter, G. S. D. Beach
Summary: Ionic and redox control of magnetism using a small voltage can significantly change magnetic properties. In this study, the effects of hydration and electrical gating on the Pt/Co/GdOxHy/Au structure were observed using polarized neutron reflectometry (PNR). The transformation from oxide to hydroxide was confirmed, and complex chemistry at the Co/GdOxHy interface was found. Proton dynamics in the system were analyzed using PNR and secondary ion mass spectrometry.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Shuyan Zhang, Jie Gong, Daniel Z. Xiao, B. Reeja Jayan, Alan J. H. McGaughey
Summary: A workflow is presented for performing pair distribution function (PDF) analysis of defected materials using structures generated from atomistic simulations. The workflow involves obtaining a large collection of structures with different types and concentrations of defects through energy minimization and refining them against an experimental PDF. The workflow is applied to a-TiO2 and t-ZrO2 synthesized in the presence of microwave radiation, revealing the dominant defects in each material.
COMPUTATIONAL MATERIALS SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Chongyin Yang, Jiale Xia, Chunyu Cui, Travis P. Pollard, Jenel Vatamanu, Antonio Faraone, Joseph A. Dura, Madhusudan Tyagi, Alex Kattan, Elijah Thimsen, Jijian Xu, Wentao Song, Enyuan Hu, Xiao Ji, Singyuk Hou, Xiyue Zhang, Michael S. S. Ding, Sooyeon Hwang, Dong Su, Yang Ren, Xiao-Qing Yang, Howard Wang, Oleg Borodin, Chunsheng Wang
Summary: The global electrification of transportation and the increasing demand for grid energy storage are driving the growth of batteries worldwide. However, the supply chain of Li-ion batteries is facing challenges in sourcing essential and scarce materials. Therefore, there is a growing incentive to develop more sustainable battery chemistries.
NATURE SUSTAINABILITY
(2023)
Article
Polymer Science
Yuanchao Li, Natalie L. L. Schwab, Robert M. M. Briber, Joseph A. A. Dura, Trung Van Nguyen
Summary: The structure of the ionomer layer in a fuel cell is modified during the hot-pressing process, resulting in improved performance. Exposing the cell to hot dry gas above the glass transition temperature causes the aggregation of ionic groups and retention of water molecules, leading to lower water content and higher oxygen solubility in the ionomer. The hydrophobic surface of the ionomer layer enhances the kinetic-controlled and concentration-polarized regions of the fuel cell.
JOURNAL OF POLYMER SCIENCE
(2023)
Article
Multidisciplinary Sciences
Jiarui He, Amruth Bhargav, Laisuo Su, Harry Charalambous, Arumugam Manthiram
Summary: By coupling the intercalation-type catalyst, MoTe2, with the conversion-type active material, sulfur, a new hybrid positive electrode material was created, which exhibited high discharge capacity and excellent cycling stability under high sulfur loading and lean electrolyte conditions.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Changmin Shi, Saya Takeuchi, George V. Alexander, Tanner Hamann, Jonathan O'Neill, Joseph A. Dura, Eric D. Wachsman
Summary: The cubic-garnet lithium-sulfur battery holds great potential for high energy densities. However, instabilities in the sulfur cathode/LLZO interface have hindered the development of these batteries. In this study, a gel polymer buffer layer is introduced to stabilize the interface, resulting in stable cycling with high sulfur loading and providing a foundation for commercial garnet lithium-sulfur batteries.
ADVANCED ENERGY MATERIALS
(2023)
