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Results for “Al-Co”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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All sourcesNASA NTRSDOE OSTI
DOE OSTI2024

Impact of electrolyte solutions on carbon dioxide fixation in single chamber Al–CO 2 battery

Governments and research & development (R&D) organizations are actively initiating various programs and research strategies for CO 2 capture, its utilization, and integration with long duration energy storage from renewable sources worldwide. In line with the carbon capture goals, here we report a novel electrochemical Al-CO 2 battery cell, that can simultaneously capture CO 2 and convert it into value-added products, in addition to long-duration energy generation and storage. Here, this innovative approach employs cost-effective Al metal as an anode and an in-house synthesized Ni–Fe based bimetallic double hydroxide catalyst as the cathode, with meticulously optimized compositions and morphologies. We explore the impact of different aqueous electrolyte solutions compositions on the cell performance, demonstrating up to 10 h of stable long duration energy storage with a stable voltage profile. The cell exhibits low polarization even at high current densities of up to 12 mA cm -2 and maintains stable cycling over 500 h. Through Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray Diffraction and X-ray photoelectron spectroscopy (XPS) analysis, we determined that the discharge product is either NaAlCO 3 (OH) 2 or KAlCO 3 (OH) 2 , distinct from the Al 2 (CO 3 ) 3 typically reported in conventional Al–CO 2 batteries.

25 ENERGY STORAGE↗
DOE OSTI2020

Materials Data on Al5Co2 by Materials Project

Al5Co2 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Co sites. In the first Co site, Co is bonded in a 9-coordinate geometry to nine Al atoms. There are six shorter (2.34 Å) and three longer (2.64 Å) Co–Al bond lengths. In the second Co site, Co is bonded in a 10-coordinate geometry to ten Al atoms. There are a spread of Co–Al bond distances ranging from 2.41–2.69 Å. There are three inequivalent Al sites. In the first Al site, Al is bonded to six equivalent Co and six equivalent Al atoms to form distorted face-sharing AlAl6Co6 cuboctahedra. All Al–Al bond lengths are 2.62 Å. In the second Al site, Al is bonded in a 3-coordinate geometry to three Co atoms. In the third Al site, Al is bonded in a 2-coordinate geometry to four Co and one Al atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Al9Co2 by Materials Project

Al9Co2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Co is bonded in a 9-coordinate geometry to nine Al atoms. There are a spread of Co–Al bond distances ranging from 2.38–2.53 Å. There are five inequivalent Al sites. In the first Al site, Al is bonded in a distorted linear geometry to two equivalent Co atoms. In the second Al site, Al is bonded in a 2-coordinate geometry to two equivalent Co atoms. In the third Al site, Al is bonded in a distorted bent 150 degrees geometry to two equivalent Co atoms. In the fourth Al site, Al is bonded in a distorted bent 120 degrees geometry to two equivalent Co atoms. In the fifth Al site, Al is bonded in a 2-coordinate geometry to two equivalent Co atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on AlCo by Materials Project

CoAl is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Co is bonded in a body-centered cubic geometry to eight equivalent Al atoms. All Co–Al bond lengths are 2.47 Å. Al is bonded in a body-centered cubic geometry to eight equivalent Co atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on AlCo3 by Materials Project

Co3Al is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Co is bonded to eight equivalent Co and four equivalent Al atoms to form CoAl4Co8 cuboctahedra that share corners with twelve equivalent CoAl4Co8 cuboctahedra, edges with eight equivalent AlCo12 cuboctahedra, edges with sixteen equivalent CoAl4Co8 cuboctahedra, faces with four equivalent AlCo12 cuboctahedra, and faces with fourteen equivalent CoAl4Co8 cuboctahedra. All Co–Co bond lengths are 2.53 Å. All Co–Al bond lengths are 2.53 Å. Al is bonded to twelve equivalent Co atoms to form AlCo12 cuboctahedra that share corners with twelve equivalent AlCo12 cuboctahedra, edges with twenty-four equivalent CoAl4Co8 cuboctahedra, faces with six equivalent AlCo12 cuboctahedra, and faces with twelve equivalent CoAl4Co8 cuboctahedra.

36 MATERIALS SCIENCE↗