SEARCH · Engineering Papers

Results for “Co(ClO)2”

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.

SourceResearch connectionFrom yearThrough year

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 19 records

All sources NASA NTRS DOE OSTI

DOE OSTI2020

Materials Data on Co(ClO)2 by Materials Project

Co(OCl)2 crystallizes in the monoclinic C2/m space group. The structure is one-dimensional and consists of two Co(OCl)2 ribbons oriented in the (0, 0, 1) direction. Co is bonded in a distorted linear geometry to two equivalent O and four equivalent Cl atoms. Both Co–O bond lengths are 1.63 Å. There are two shorter (2.38 Å) and two longer (2.45 Å) Co–Cl bond lengths. O is bonded in a single-bond geometry to one Co atom. Cl is bonded in an L-shaped geometry to two equivalent Co atoms.

36 MATERIALS SCIENCE↗

DOE OSTI2025

Modular Assembly of FTO|Chromophore-Catalyst Hierarchical Films Based on Strong Dipole Interactions

Here, we have designed and characterized modular self-assembled hierarchical films containing a molecular catalyst tethered to an anchoring molecule by means of dipole-induced dipole interactions. In order to do so, two new Co III -based molecular catalyst candidates were designed, namely, [Co III L 1 (pyrr) 2 ]ClO 4 (Co1) and [Co III L 2 (pyrr) 2 ]ClO 4 (Co2), where L 1 and L 2 are the respective deprotonated forms of N,N′-[4,5-bis(dodecyloxy)-1,2-phenylene]dipicolinamide and N,N′-[4,5-bis(methoxyethoxy)-1,2-phenylene]dipicolinamide and were characterized by electrochemical, electronic, and film formation properties. Species Co1 and Co2 were deposited onto an anchor molecule such as octylphosphonic acid (OPA) or the chromophoric [Ru II (bpy PO3H ) 2 (bpy C7 )]Cl 2 (Ru) previously attached onto conductive fluorine-doped tin oxide (FTO). Four hierarchical films of the form substrate|anchor-catalyst were obtained, namely, FTO|OPA-Co1, FTO|OPA-Co2, FTO|Ru-Co1, and FTO|Ru-Co2, and the role of dipole-dipole interactions between anchor and catalyst modules was assessed. These newly synthesized hierarchical films were characterized by a host of surface-specific methods that include X-ray photoelectron spectroscopy, ellipsometry, X-ray fluorescence, and water contact angle, thus enabling an unprecedented level of analysis. Compared to the weak C-H van der Waals interactions exhibited by Co1, the presence of alkoxy chains in Co2 ensures stronger dipole-dipole interactions with the alkyl chain of the anchors due to O···H formation. The persistence of their redox properties, which include metal oxidation, and directionality of electron transport were probed suggesting direct relevance to catalytic processes such as water oxidation.

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗

DOE OSTI2020

Materials Data on PtC2(ClO)2 by Materials Project

Pt(CO)2Cl2 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four Pt(CO)2Cl2 clusters. Pt2- is bonded in a rectangular see-saw-like geometry to two C4+ and two Cl1- atoms. Both Pt–C bond lengths are 1.90 Å. There are one shorter (2.32 Å) and one longer (2.34 Å) Pt–Cl bond lengths. There are two inequivalent C4+ sites. In the first C4+ site, C4+ is bonded in a distorted linear geometry to one Pt2- and one O2- atom. The C–O bond length is 1.14 Å. In the second C4+ site, C4+ is bonded in a linear geometry to one Pt2- and one O2- atom. The C–O bond length is 1.15 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one C4+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one C4+ atom. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Pt2- atom. In the second Cl1- site, Cl1- is bonded in a distorted single-bond geometry to one Pt2- atom.

36 MATERIALS SCIENCE↗

DOE OSTI2023

Implanting Transition Metal into Li 2 O-Based Cathode Prelithiation Agent for High-Energy-Density and Long-Life Li-Ion Batteries

Compensating the irreversible loss of limited active lithium (Li) is essentially important for improving the energy-density and cycle-life of practical Li-ion battery full-cell, especially after employing high-capacity but low initial coulombic efficiency anode candidates. Introducing prelithiation agent can provide additional Li source for such compensation. Herein, we precisely implant trace Co (extracted from transition metal oxide) into the Li site of Li 2 O, obtaining (Li 0.66 Co 0.11$\square$0.23 ) 2 O (CLO) cathode prelithiation agent. Further, the synergistic formation of Li vacancies and Co-derived catalysis efficiently enhance the inherent conductivity and weaken the Li-O interaction of Li 2 O, which facilitates its anionic oxidation to peroxo/superoxo species and gaseous O 2 , achieving 1642.7 mAh/g ~Li2O prelithiation capacity (≈980 mAh/g for prelithiation agent). Coupled 6.5 wt % CLO-based prelithiation agent with LiCoO 2 cathode, substantial additional Li source stored within CLO is efficiently released to compensate the Li consumption on the SiO/C anode, achieving 270 Wh/kg pouch-type full-cell with 92 % capacity retention after 1000 cycles.

25 ENERGY STORAGE↗

DOE OSTI2025

A new quinoline-based cobalt( II ) catalyst capable of bifunctional water splitting

We report on a new water-soluble cobalt( II ) complex capable of water splitting bifunctionality, i.e., water reduction and water oxidation. The species [Co II (L Qpy )H 2 O]ClO 4 (1), where L Qpy is the deprotonated form of the new tripodal ligand N 1 ,N 1 -bis(pyridin-2-ylmethyl)-N 2 -(quinolin-8-yl)benzene-1,2-diamine, HL Qpy , was developed aiming to replace an oxidation prone methylene group by a sturdy and redox stable quinoline. The molecular and electronic structures of 1 were evaluated by multiple spectroscopic, spectrometric, electrochemical and computational methods, and detailed pre- and post-catalytic studies were conducted to ascertain the molecular nature of the conversions. Complex 1 performs water reduction at a low onset overpotential (η) of 0.65 V at pH 7, reaching TON 3h 2900 (TOF 970 h −1 ) and TON 18h 12 100 (TOF 672 h −1 ) with up to 98% faradaic efficiency (FE). Species 1 also promotes water oxidation at η = 0.34 V under pH 8, achieving TON 3h 193 (TOF 64 h −1 ) at 84% FE. Experimental and DFT results enabled us to propose reaction intermediates and mechanisms.

Lucecki, Carlos A. [Wayne State University, Detroi↗

DOE OSTI2020

Materials Data on CoN6(ClO)2 by Materials Project

(CoCl2)2(N2)5(NO2)2 crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of twenty ammonia molecules; four cobaltchloride molecules; and four hydroxylamine, n-hydroxy- molecules.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on CoN6(ClO)2 by Materials Project

CoN5Cl2NO2 is alpha Niobium phosphide structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of four nitrous acid molecules and four CoN5Cl2 clusters. In each CoN5Cl2 cluster, Co2+ is bonded in a single-bond geometry to three N+0.67+ atoms. There is one shorter (1.59 Å) and two longer (1.95 Å) Co–N bond length. There are three inequivalent N+0.67+ sites. In the first N+0.67+ site, N+0.67+ is bonded in a single-bond geometry to one Cl1- atom. The N–Cl bond length is 1.51 Å. In the second N+0.67+ site, N+0.67+ is bonded in a 2-coordinate geometry to one Co2+ and one Cl1- atom. The N–Cl bond length is 1.53 Å. In the third N+0.67+ site, N+0.67+ is bonded in a single-bond geometry to one Co2+ atom. Cl1- is bonded in a bent 120 degrees geometry to two N+0.67+ atoms.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on CoN6(ClO)2 by Materials Project

CoNCl2(N2)2NO2 crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of four hydroxylamine, n-hydroxy- molecules; eight nitrogen molecules; and four CoNCl2 clusters. In each CoNCl2 cluster, Co2+ is bonded in a trigonal planar geometry to one N+0.67+ and two equivalent Cl1- atoms. The Co–N bond length is 1.77 Å. Both Co–Cl bond lengths are 2.10 Å. N+0.67+ is bonded in a distorted single-bond geometry to one Co2+ atom. Cl1- is bonded in a single-bond geometry to one Co2+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on CoN6(ClO)2 by Materials Project

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on CoN6(ClO)2 by Materials Project

CoNCl2(N2)2NO2 crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of sixteen ammonia molecules; four hydroxylamine, n-hydroxy- molecules; and four CoNCl2 clusters. In each CoNCl2 cluster, Co2+ is bonded in a T-shaped geometry to one N+0.67+ and two equivalent Cl1- atoms. The Co–N bond length is 1.75 Å. Both Co–Cl bond lengths are 2.16 Å. N+0.67+ is bonded in a single-bond geometry to one Co2+ atom. Cl1- is bonded in a single-bond geometry to one Co2+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on CoH5CN(ClO)2 by Materials Project

CoCH(OCl)2NH4 crystallizes in the monoclinic C2/c space group. The structure is one-dimensional and consists of four ammonium molecules and two CoCH(OCl)2 ribbons oriented in the (0, 0, 1) direction. In each CoCH(OCl)2 ribbon, Co2+ is bonded to two equivalent O2- and four equivalent Cl1- atoms to form edge-sharing CoCl4O2 octahedra. Both Co–O bond lengths are 2.12 Å. There are two shorter (2.45 Å) and two longer (2.47 Å) Co–Cl bond lengths. C2+ is bonded in a trigonal planar geometry to one H1+ and two equivalent O2- atoms. The C–H bond length is 1.10 Å. Both C–O bond lengths are 1.27 Å. H1+ is bonded in a single-bond geometry to one C2+ atom. O2- is bonded in a 2-coordinate geometry to one Co2+ and one C2+ atom. Cl1- is bonded in an L-shaped geometry to two equivalent Co2+ atoms.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on CoH15N6(ClO)2 by Materials Project

(CoN4H9OCl)2(H2)3(NH2NO)2(HCl)2 crystallizes in the orthorhombic Pna2_1 space group. The structure is zero-dimensional and consists of four hydrazino alcohol molecules, four hydrochloric acid molecules, eight hydrogen molecules, and four CoN4H9OCl clusters. In each CoN4H9OCl cluster, Co3+ is bonded in a 6-coordinate geometry to three N2-, two H1+, and one O2- atom. There are a spread of Co–N bond distances ranging from 1.95–2.11 Å. There is one shorter (1.92 Å) and one longer (1.97 Å) Co–H bond length. The Co–O bond length is 2.03 Å. There are four inequivalent N2- sites. In the first N2- site, N2- is bonded in a bent 120 degrees geometry to one N2- and two H1+ atoms. The N–N bond length is 1.34 Å. There is one shorter (1.01 Å) and one longer (1.02 Å) N–H bond length. In the second N2- site, N2- is bonded in a distorted L-shaped geometry to one Co3+ and one N2- atom. The N–N bond length is 1.25 Å. In the third N2- site, N2- is bonded in a distorted trigonal non-coplanar geometry to one Co3+ and three H1+ atoms. There is two shorter (1.02 Å) and one longer (1.03 Å) N–H bond length. In the fourth N2- site, N2- is bonded in a distorted trigonal planar geometry to one Co3+ and two N2- atoms. There are nine inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the fifth H1+ site, H1+ is bonded in an L-shaped geometry to one Co3+ and one H1+ atom. The H–H bond length is 0.78 Å. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the eighth H1+ site, H1+ is bonded in a 2-coordinate geometry to one Co3+ and one H1+ atom. In the ninth H1+ site, H1+ is bonded in a single-bond geometry to one O2- and one Cl1- atom. The H–O bond length is 1.02 Å. The H–Cl bond length is 1.98 Å. O2- is bonded in a distorted water-like geometry to one Co3+ and two H1+ atoms. Cl1- is bonded in a single-bond geometry to one H1+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on CoH15N6(ClO)2 by Materials Project

CoH15(N3O)2Cl2 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of four hydrochloric acid molecules and two CoH15(N3O)2 clusters. In each CoH15(N3O)2 cluster, Co3+ is bonded in an octahedral geometry to six N2- atoms. There are a spread of Co–N bond distances ranging from 1.95–2.11 Å. There are six inequivalent N2- sites. In the first N2- site, N2- is bonded in a distorted trigonal non-coplanar geometry to one Co3+ and three H1+ atoms. There is one shorter (1.02 Å) and two longer (1.03 Å) N–H bond length. In the second N2- site, N2- is bonded in a distorted trigonal non-coplanar geometry to one Co3+ and three H1+ atoms. There are a spread of N–H bond distances ranging from 1.02–1.04 Å. In the third N2- site, N2- is bonded in a distorted trigonal non-coplanar geometry to one Co3+ and three H1+ atoms. There are a spread of N–H bond distances ranging from 1.02–1.04 Å. In the fourth N2- site, N2- is bonded in a trigonal planar geometry to one Co3+ and two O2- atoms. Both N–O bond lengths are 1.24 Å. In the fifth N2- site, N2- is bonded in a distorted trigonal non-coplanar geometry to one Co3+ and three H1+ atoms. There are a spread of N–H bond distances ranging from 1.02–1.04 Å. In the sixth N2- site, N2- is bonded in a distorted trigonal non-coplanar geometry to one Co3+ and three H1+ atoms. There are a spread of N–H bond distances ranging from 1.02–1.04 Å. There are fifteen inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the ninth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the tenth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the eleventh H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the twelfth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the thirteenth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the fourteenth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. In the fifteenth H1+ site, H1+ is bonded in a single-bond geometry to one N2- atom. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one N2- atom. In the second O2- site, O2- is bonded in a single-bond geometry to one N2- atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Sr2Co(ClO)2 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Sr2Co(ClO)2 by Materials Project

Sr2CoO2Cl2 is (La,Ba)CuO4-derived structured and crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. Sr2+ is bonded in a 9-coordinate geometry to four O2- and five equivalent Cl1- atoms. There are two shorter (2.58 Å) and two longer (2.67 Å) Sr–O bond lengths. There are four shorter (3.13 Å) and one longer (3.30 Å) Sr–Cl bond lengths. Co2+ is bonded to four O2- and two equivalent Cl1- atoms to form distorted corner-sharing CoCl2O4 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.01 Å) and two longer (2.13 Å) Co–O bond lengths. Both Co–Cl bond lengths are 2.72 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Sr2+ and two equivalent Co2+ atoms to form a mixture of distorted face, edge, and corner-sharing OSr4Co2 octahedra. The corner-sharing octahedral tilt angles are 0°. In the second O2- site, O2- is bonded to four equivalent Sr2+ and two equivalent Co2+ atoms to form a mixture of face, edge, and corner-sharing OSr4Co2 octahedra. The corner-sharing octahedral tilt angles are 0°. Cl1- is bonded in a 6-coordinate geometry to five equivalent Sr2+ and one Co2+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2025

Interfacial Cation Arrangement Controls Electrocatalytic Kinetics in CO 2 Reduction

The identity of electrolyte cations is known to strongly influence electrocatalytic activity, but the relationship between their interfacial arrangement and observed performance remains poorly understood. Organic cations, with their molecular tunability, provide a powerful platform for systematically probing these effects. Here, we leverage phosphonium-based geminal dications to control interfacial cation arrangement and identify the variables that most strongly influence catalytic rates. As a case study, we examine CO 2 reduction to CO over polycrystalline silver electrodes in dry aprotic acetonitrile. Through a combination of rotating disk electrode measurements, electrochemical impedance spectroscopy, and molecular dynamics simulations, we decouple the effects of cation–electrode distance and interfacial cation density on catalytic rates. We find that smaller, more densely packed cations induce stronger interfacial electric fields, which lower the activation barrier for CO 2 adsorption and increase reaction rates. Using geminal phosphonium dications [C n (P mmm ) 2 ][ClO 4 ] 2 , we demonstrate that both the vertical and lateral positioning of organic cations within the electrical double layer independently affect reactivity. These results demonstrate that electrolyte cation identity primarily influences catalytic kinetics by determining how efficiently charge can be arranged at electrochemical interfaces. Altogether, our findings support an electrostatic view of cation effects in catalysis and provide design principles for next-generation electrolytes.

Cations↗

DOE OSTI2020

Materials Data on Cu(ClO)2 by Materials Project

CuO2Cl2 is alpha Po structured and crystallizes in the orthorhombic Pmna space group. The structure is zero-dimensional and consists of two CuO2Cl2 clusters. Cu is bonded in a square co-planar geometry to two equivalent O and two equivalent Cl atoms. Both Cu–O bond lengths are 1.77 Å. Both Cu–Cl bond lengths are 2.19 Å. O is bonded in a single-bond geometry to one Cu atom. Cl is bonded in a single-bond geometry to one Cu atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on CuPb2(ClO)2 by Materials Project

CuPb2(OCl)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Cu2+ is bonded in a distorted square co-planar geometry to four equivalent O2- and two equivalent Cl1- atoms. All Cu–O bond lengths are 2.01 Å. Both Cu–Cl bond lengths are 2.94 Å. Pb2+ is bonded in a 9-coordinate geometry to four equivalent O2- and five equivalent Cl1- atoms. All Pb–O bond lengths are 2.66 Å. There are four shorter (3.08 Å) and one longer (3.46 Å) Pb–Cl bond lengths. O2- is bonded in a distorted linear geometry to two equivalent Cu2+ and four equivalent Pb2+ atoms. Cl1- is bonded in a 6-coordinate geometry to one Cu2+ and five equivalent Pb2+ atoms.

36 MATERIALS SCIENCE↗