caa a22 4500 388021780 CHVBK 20180307124926.0 cr unu---uuuuu 161130e199807 xx s 000 0 eng 10.1557/JMR.1998.0282 doi S0884291400045180 pii (NATIONALLICENCE)cambridge-10.1557/JMR.1998.0282 Structural modifications of disordered mesocarbon microbeads with lower temperatures of heat treatment [Elektronische Daten] We describe the variation of structural and physical properties of mesocarbon microbeads, a potential anode material for rechargeable lithium batteries, as a function of heat-treatment temperature in the range 400-1100 °C. Scanning electron microscopy (SEM) studies indicated changes in the morphology of the mesocarbons with heat treatment. X-ray studies show that average crystallite size varies considerably with heat treatment. The d002 spacing decreases with increasing heat-treatment temperatures. The electronic conductivity of the mesocarbon microbeads also increases substantially with increasing heat-treatment temperature. Based on thermogravimetric analysis (TGA) and other measurements, we find that organic fractions volatilizes out of these carbons in two distinct stages. The observed weight loss correlates with the structural changes observed. We suggest that these observations are consistent with two types of hydrogenated fractions present in the "green” mesocarbons. Copyright © Materials Research Society 1998 Haridoss Prathap Electronic and Electrochemical Materials and Devices Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 Uribe Francisco A. Electronic and Electrochemical Materials and Devices Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 Garzon Fernando H. Electronic and Electrochemical Materials and Devices Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 Zawodzinski Thomas A. Electronic and Electrochemical Materials and Devices Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 Journal of Materials Research Cambridge University Press 13/7(1998-07), 2015-2022 0884-2914 13:7<2015 1998 13 JMR https://doi.org/10.1557/JMR.1998.0282 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/JMR.1998.0282 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Haridoss Prathap Electronic and Electrochemical Materials and Devices Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 NATIONALLICENCE 700 1- Uribe Francisco A. Electronic and Electrochemical Materials and Devices Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 NATIONALLICENCE 700 1- Garzon Fernando H. Electronic and Electrochemical Materials and Devices Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 NATIONALLICENCE 700 1- Zawodzinski Thomas A. Electronic and Electrochemical Materials and Devices Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 NATIONALLICENCE 773 0- Journal of Materials Research Cambridge University Press 13/7(1998-07), 2015-2022 0884-2914 13:7<2015 1998 13 JMR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge