Andrei Dolocan
University of Texas at Austin
Inorganic chemistryChemistryMaterials scienceElectrolyteSecondary ion mass spectrometry
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Publications 69
#1Zixuan Li (University of Texas at Austin)
#2Andrei Dolocan (University of Texas at Austin)H-Index: 24
Last. Filippo Mangolini (University of Texas at Austin)H-Index: 16
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#1Sawittree Sahakijpijarn (University of Texas at Austin)H-Index: 1
#2Chaeho Moon (University of Texas at Austin)H-Index: 2
Last. Robert O. Williams (University of Texas at Austin)H-Index: 47
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Abstract We investigated the feasibility of preparing high-potency tacrolimus dry powder for inhalation using thin film freezing (TFF). We found that using ultra-rapid freezing can increase drug loading up to 95% while maintaining good aerosol performance. Drug loading affected the specific surface area and moisture sorption of TFF formulations, but it did not affect the chemical stability, physical stability, and dissolution of tacrolimus. Tacrolimus remained amorphous after storage at 40 °C/ 7...
#1Yu Ding (University of Texas at Austin)H-Index: 39
#2Xuelin Guo (University of Texas at Austin)H-Index: 11
Last. Guihua Yu (University of Texas at Austin)H-Index: 70
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Liquid metal batteries are regarded as potential electrochemical systems for stationary energy storage. Currently, all reported liquid metal batteries need to be operated at temperatures above 240 °C to maintain the metallic electrodes in a molten state. Here, an unprecedented room-temperature liquid metal battery employing a sodium-potassium (Na-K) alloy anode and gallium (Ga)-based alloy cathodes is demonstrated. Compared with lead (Pb)- and mercury (Hg)-based liquid metal electrodes, the nont...
#1Bryan R. WygantH-Index: 10
Last. C. Buddie MullinsH-Index: 53
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Ruddlesden–Popper phase quasi-2-D organolead halide perovskites like n-butylammonium methylammonium lead iodide (nBA-MAPI) exhibit improved moisture stability over typical 3-D perovskite materials, making them exciting for use in a variety of applications such as photovoltaic (PV) devices. This improved stability is the result of a unique disproportionation-based degradation mechanism that protects the bulk of the nBA-MAPI from extensive damage through the formation of a protective, low-n surfac...
#1Camila A. Saez Cabezas (University of Texas at Austin)H-Index: 2
#2Kristen Miller (University of Texas at Austin)
Last. Delia J. Milliron (University of Texas at Austin)H-Index: 48
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Transition metal oxide coatings, owing to their unique combination of optoelectronic, electrochemical, and chemical properties, are at the forefront of functional thin films across diverse technolo...
The long-term instability of typical organolead halide perovskites has led to increased interest in Ruddlesden–Popper phase (RPP) perovskites. These materials have been shown to possess high stabil...
#1Nan Wu (University of Texas at Austin)H-Index: 5
#2Yutao Li (University of Texas at Austin)H-Index: 39
Last. John B. Goodenough (University of Texas at Austin)H-Index: 125
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#1Evan M. Erickson (University of Texas at Austin)H-Index: 2
#2Wangda Li (University of Texas at Austin)H-Index: 16
Last. Arumugam Manthiram (University of Texas at Austin)H-Index: 110
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We present a comprehensive study of cycled high-Ni (LiNi1-xMxO2, M = metals), Li-rich (Li1+xMnyM1-x-yO2), and high-voltage spinel (LiMn1.5Ni0.5O4) electrodes with time-of-flight secondary ion mass spectrometry (TOF-SIMS) and X-ray pho-toelectron spectroscopy (XPS) in conjunction with electrochemical techniques to better understand their evolving cath-ode-electrolyte interphase (CEI) structure during cycling. TOF-SIMS provides fragment-specific information regarding the surface film content for e...
#1Sungyeon Heo (University of Texas at Austin)H-Index: 7
#2Clayton J. Dahlman (University of Texas at Austin)H-Index: 6
Last. Delia J. Milliron (University of Texas at Austin)H-Index: 48
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Coloration efficiency is an important figure of merit in electrochromic windows. Though it is thought to be an intrinsic material property, we tune optical modulation by effective utilization of ion intercalation sites. Specifically, we enhance the coloration efficiency of m-WO2.72 nanocrystal films by selectively intercalating sodium ions into optically active hexagonal sites. To accurately measure coloration efficiencies, significant degradation during cycling is mitigated by introducing atomi...