Reliable data for the solubility
of carbon dioxide in aqueous solutions
of monoethanolamine are required for the design and evaluation of
postcombustion carbon capture processes. As published experimental
data for the solubility of carbon dioxide in aqueous solutions of
monoethanolamine show considerable scatter, the solubility of carbon
dioxide in aqueous solutions containing (15 and 30) mass percent of
monoethanolamine; that is, (2.9 and 7.0) mol·(kg H2O)−1 respectively, was measured at molar ratios
of carbon dioxide to monoethanolamine in the liquid solution from
0.1 to 1.3 at (313, 353 and 393) K. An apparatus based on headspace
gas chromatography (on the synthetic gas solubility method) was used
for the experiments at low (high) gas loadings, that is, at partial
pressures of carbon dioxide from (1 to 80) kPa (from (0.4 to 8.6)
MPa). The new experimental results are compared to literature data
and used to parametrize a physicochemical thermodynamic model based
on the extended Pitzer equation for the Gibbs excess energy of the
liquid mixture. Furthermore, model predictions for the ion speciation
in the liquid phase are compared to literature data from NMR spectroscopy.
Lithium is considered to be the ultimate anode material for high energy‐density rechargeable batteries. Recent emerging technologies of all solid‐state batteries based on sulfide‐based electrolytes raise hope for the practical use of lithium, as it is likely to suppress lithium dendrite growth. However, such devices suffer from undesirable side reactions and a degradation of electrochemical performance. In this work, nanostructured Li2Se epitaxially grown on Li metal by chemical vapor deposition are investigated as a protective layer. By adjusting reaction time and cooling rate, a morphology of as‐prepared Li2Se is controlled, resulting in nanoparticles, nanorods, or nanowalls with a dominant (220) plane parallel to the (110) plane of the Li metal substrate. Uniaxial pressing the layers under a pressure of 50 MPa for a cell preparation transforms more compact and denser. Dual compatibility of the Li2Se layers with strong chemical bonds to Li metal and uniform physical contact to a Li6PS5Csulfide electrolyte prevents undesirable side reactions and enables a homogeneous charge transfer at the interface upon cycling. As a result, a full cell coupled with a LiCoO2‐based cathode shows significantly enhanced electrochemical performance and demonstrates the practical use of Li anodes with Li2Se layers for all solid‐state battery applications.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.