Article
Chemistry, Applied
Zhuanpei Wang, Francois Beguin
Summary: In this study, a carbon/carbon capacitor based on micro/mesoporous carbon electrodes was developed, using cost-effective and eco-friendly aqueous choline bis(trifluoromethylsulfonyl)imide (ChTFSI) electrolyte with a cosolvent to enable low-temperature operation down to -30 degrees C. The addition of an organic solvent to the aqueous electrolyte reduced its viscosity and melting point, allowing for improved conductivity. The carbon/carbon capacitor exhibited enhanced charge propagation and higher specific energy when using the optimized electrolyte in M0.75W0.25 solvent compared to I0.75W0.25 solvent.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Electrochemistry
Genevieve M. Asselin, Olivia Paden, Weiqi Qiu, Zicheng Yang, Niya Sa
Summary: The development of a new nonaqueous zinc electrolyte with dimethylamine as a cosolvent allows for reversible plating of zinc with high coulombic efficiencies. Adjusting the ratio of cosolvent DMA in THF can enhance kinetics, ion solubilization, and ion mobility, resulting in increased conductivity and plating/stripping current densities. Additionally, increasing the Zn(TFSI)(2) salt concentration in a 2.0 M DMA in THF solvent mixture leads to higher current density, conductivity, and molar conductivity due to a redissociation mechanism. These findings contribute to a better understanding of multivalent electrolytes and effective electrolyte design strategies.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Dandan Du, Hejia Li, He Xu, Yunfeng Zhang, Yubao Sun, Danli Zeng, Hansong Cheng
Summary: This study explores a single ion conducting polymer electrolyte membrane (PBI-g-LiPSTFSI) with high ionic conductivity and excellent cycling performance, making it a promising candidate for safe lithium metal secondary batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Polymer Science
Jesus Guzman-Torres, Arturo G. Sanchez-Valdez, Lorena L. Garza-Tovar, Luis C. Torres-Gonzalez, Edgar Gonzalez-Juarez, Ignacio Gonzalez-Martinez, Arian Espinosa-Roa, Eduardo M. Sanchez-Cervantes
Summary: Ionic liquid trimethylsulfonium bis(trifluoromethylsulfonyl)imide was synthesized and combined with polyethylene oxide and sodium perchlorate to produce solid polymer electrolyte membranes. Various techniques were used to characterize the materials and products, and electrochemical tests were conducted to determine the ionic conductivity and battery performance. These membranes showed promising results in terms of specific capacity and coulombic efficiency for Na-ion battery applications.
Article
Chemistry, Physical
Gregory A. Davis, Gyanaranjan Prusty, Sumon Hati, Jacob T. Lee, Sarah R. Langlais, Xun Zhan, Rajesh Sardar
Summary: This study reports the synthesis and characterization of <2.0 nm indium oxide nanoclusters. The nanoclusters exhibit unique optical properties and can be used as building blocks for the synthesis of tunable plasmonic nanocrystals. The findings contribute to the understanding of the growth process and properties of ultrasmall metal oxide nanoclusters.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Engineering, Electrical & Electronic
R. M. L. L. Rathnayake, K. S. Perera, K. P. Vidanapathirana
Summary: An ionic liquid-based polymer electrolyte with high room temperature ionic conductivity and good mechanical properties was prepared using PVdF-co-HFP as the polymer, 1B3MITFSI as the IL, and ZnTf as the salt. The resulting electrolyte showed promising potential for applications in energy storage devices such as batteries.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Polymer Science
Anji Reddy Polu, Pramod K. Singh, P. Siva Kumar, Girish M. Joshi, T. Ramesh, I. M. Noor, Aysh Y. Madkhli, Sunanda Kakroo
Summary: In this study, ion conducting solid polymer electrolyte films based on polymer poly(ethylene oxide) (PEO) were synthesized using anhydrous acetonitrile as solvent. The introduction of ionic liquid resulted in changes in physicochemical properties of these electrolyte films, including decreased crystallinity and melting points, and increased ionic conductivity. The optimized composition showed good electrochemical stability window at ambient temperature, making it a potential separator in Li-ion batteries.
HIGH PERFORMANCE POLYMERS
(2023)
Article
Instruments & Instrumentation
Edgar A. Rojas-Gonzalez, Gunnar A. Niklasson
REVIEW OF SCIENTIFIC INSTRUMENTS
(2019)
Article
Optics
David Barrios, Carlos Alvarez, Jose Miguitama, Daniel Gallego, Gunnar A. Niklasson
Article
Materials Science, Multidisciplinary
Idris Sorar, Ilknur Bayrak Pehlivan, Claes G. Granqvist, Gunnar A. Niklasson
Article
Physics, Applied
Edgar A. Rojas-Gonzalez, Gunnar A. Niklasson
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Nanoscience & Nanotechnology
Marika Gugole, Oliver Olsson, Kunli Xiong, Jolie C. Blake, Jose Montero Amenedo, Ilknur Bayrak Pehlivan, Gunnar A. Niklasson, Andreas Dahlin
Article
Optics
William E. Vargas, Junxin Wang, Gunnar A. Niklasson
JOURNAL OF MODERN OPTICS
(2020)
Article
Electrochemistry
Gamze Atak, Ilknur Bayrak Pehlivan, Jose Montero, Claes G. Granqvist, Gunnar A. Niklasson
Summary: Thin films of W oxide were prepared by reactive DC magnetron sputtering, and the study focused on the influence of critical deposition parameters on electrochromic properties. The results showed that a judicious choice of deposition parameters could yield films with superior cycling durability, providing a pathway towards W oxide films with excellent EC properties.
ELECTROCHIMICA ACTA
(2021)
Article
Physics, Applied
Edgar A. Rojas-Gonzalez, Gunnar A. Niklasson
Summary: This paper investigates the coloration mechanisms in electrochromic systems by comparing the electrical and optical responses. The study demonstrates that at low intercalation levels, both adsorption and diffusion phenomena contribute to coloration, whereas at high intercalation levels, diffusion is dominant and adsorption is negligible. Frequency-dependent techniques are effective in elucidating the dynamics of coloration mechanisms in electrochromic materials under various conditions.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Physics, Applied
Hui-Ying Qu, Junxin Wang, Jose Montero, Yao Li, Lars Osterlund, Gunnar A. Niklasson
Summary: Inorganic electrochromic materials with multicolored NiO films were achieved through tailoring the anodic oxide NiO films with three-dimensional ordered macroporous inverse opal structures. The colors were varied by synergistic mechanisms of structural and electrochromic coloration, with depth of color adjustable by applying an external potential. This work provides insights into the development of inorganic colored electrochromic materials.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Optics
William E. Vargas, Junxin Wang, Gunnar A. Niklasson
Summary: The paper presents an inversion method for the differential equations of the diffuse components of the four-flux model in an optical three-layer system, which was tested with synthetic spectra to show its reliability.
JOURNAL OF MODERN OPTICS
(2021)
Article
Nanoscience & Nanotechnology
Junxin Wang, Changgang Xu, Hui Xiong, Yuanyuan Han, Annica M. Nilsson, Mattias Stromberg, Tomas Edvinsson, Gunnar A. Niklasson
ACS APPLIED NANO MATERIALS
(2020)
Article
Electrochemistry
Idris Sorar, Tesfalem G. Welearegay, Daniel Primetzhofer, Lars Osterlund, Claes G. Granqvist, Gunnar A. Niklasson
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2020)
Article
Chemistry, Multidisciplinary
Junxin Wang, Changgang Xu, Annica M. Nilsson, Daniel L. A. Fernandes, Gunnar A. Niklasson
Article
Chemistry, Physical
Miguel A. Arvizu, Hui-Ying Qu, Umut Cindemir, Zhen Qiu, Edgar A. Rojas-Gonzalez, Daniel Primetzhofer, Claes G. Granqvist, Lars Osterlund, Gunnar A. Niklasson
JOURNAL OF MATERIALS CHEMISTRY A
(2019)
Article
Chemistry, Multidisciplinary
Zhen Qiu, Cheuk-Wai Tai, Gunnar A. Niklasson, Tomas Edvinsson
ENERGY & ENVIRONMENTAL SCIENCE
(2019)
