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Title: Molecule@MOF: A New Class of Electronic Materials.

Abstract

Abstract not provided.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-CA), Livermore, CA (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1241683
Report Number(s):
SAND2014-18122PE
537746
DOE Contract Number:
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Proposed for presentation at the Electrochemical Society Meeting held October 6-10, 2014 in Cancun, Mexico.
Country of Publication:
United States
Language:
English

Citation Formats

Talin, Albert Alec, Foster, Michael E., Stavila, Vitalie, Leonard, Francois Leonard, Spataru, Dan Catalin, Allendorf, Mark D., Ford, Alexandra Caroline, and El Gabaly Marquez, Farid. Molecule@MOF: A New Class of Electronic Materials.. United States: N. p., 2014. Web.
Talin, Albert Alec, Foster, Michael E., Stavila, Vitalie, Leonard, Francois Leonard, Spataru, Dan Catalin, Allendorf, Mark D., Ford, Alexandra Caroline, & El Gabaly Marquez, Farid. Molecule@MOF: A New Class of Electronic Materials.. United States.
Talin, Albert Alec, Foster, Michael E., Stavila, Vitalie, Leonard, Francois Leonard, Spataru, Dan Catalin, Allendorf, Mark D., Ford, Alexandra Caroline, and El Gabaly Marquez, Farid. Mon . "Molecule@MOF: A New Class of Electronic Materials.". United States. doi:. https://www.osti.gov/servlets/purl/1241683.
@article{osti_1241683,
title = {Molecule@MOF: A New Class of Electronic Materials.},
author = {Talin, Albert Alec and Foster, Michael E. and Stavila, Vitalie and Leonard, Francois Leonard and Spataru, Dan Catalin and Allendorf, Mark D. and Ford, Alexandra Caroline and El Gabaly Marquez, Farid},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Sep 01 00:00:00 EDT 2014},
month = {Mon Sep 01 00:00:00 EDT 2014}
}

Conference:
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  • Metal organic frameworks (MOFs) are extended, nanoporous crystalline compounds consisting of metal ions interconnected by organic ligands. Their synthetic versatility suggest a disruptive class of opto - electronic materials with a high degree of electrical tunability and without the property - degrading disorder of organic conductors. In this project we determined the factors controlling charge and energy transport in MOFs and evaluated their potential for thermoelectric energy conversion. Two strategies for a chieving electronic conductivity in MOFs were explored: 1) using redox active 'guest' molecules introduced into the pores to dope the framework via charge - transfer coupling (Guest@MOF), 2)more » metal organic graphene analogs (MOGs) with dispersive band structur es arising from strong electronic overlap between the MOG metal ions and its coordinating linker groups. Inkjet deposition methods were developed to facilitate integration of the guest@MOF and MOG materials into practical devices.« less
  • Abstract not provided.
  • Abstract not provided.
  • Abstract not provided.
  • A series of electroactive spinel compounds, LiMn{sub 2{minus}x}Cu{sub x}O{sub 4} (0.1 {le} x {le} 0.5) has been studied by crystallographic, spectroscopic and electrochemical methods and by electron-microscopy. These LiMn{sub 2{minus}x}Cu{sub x}O{sub 4} spinels are nearly identical in structure to cubic LiMn{sub 2}O{sub 4} and successfully undergo reversible Li intercalation. The electrochemical data show a remarkable reversible electrochemical process at 4.9 V which is attributed to the oxidation of Cu{sup 2+} to Cu{sub 3+}. The inclusion of Cu in the spinel structure enhances the electrochemical stability of these materials upon cycling. The initial capacity of LiMn{sub 2{minus}x}Cu{sub x}O{sub 4} spinels decreasesmore » with increasing x from 130mAh/g in LiMn{sub 2}O{sub 4} (x=0) to 70 mAh/g in ''LiMn{sub 1.5}Cu{sub 0.5}O{sub 4}'' (x=0.5). The data also show slight shifts to higher voltage for the delithiation reaction that normally occurs at 4.1 V in standard Li{sub 1{minus}x}Mn{sub 2}O{sub 4} electrodes (1 {ge} x {ge} 0) corresponding to the oxidation of Mn{sup 3+} to Mn{sup 4+}. Although the powder X-ray diffraction pattern of ''LiMn{sub 1.5}Cu{sub 0.5}O{sub 4}'' shows a single-phase spinel product, neutron diffraction data show a small, but significant quantity of an impurity phase, the composition and structure of which could not be identified. X-ray absorption spectroscopy was used to gather information about the oxidation states of the manganese and copper ions. The composition of the spinel component in the LiMn{sub 1.5}Cu{sub 0.5}O{sub 4} was determined from X-ray diffraction and XANES data to be Li{sub 1.01}Mn{sub 1.67}Cu{sub 0.32}O{sub 4} suggesting, to a best approximation, that the impurity in the sample was a lithium-copper-oxide phase. The substitution of manganese by copper enhances the reactivity of the spinel structure towards hydrogen; the compounds are more easily reduced at moderate temperature ({approximately} 200 C) than LiMn{sub 2}O{sub 4}.« less