TY - JOUR
T1 - Fe K-Edge X-ray absorption Near-Edge spectroscopy and morphology analyses of LiFePO4powders
AU - Nihlatunnur, N.
AU - Latif, C.
AU - Negara, V. S.I.
AU - Wongtepa, W.
AU - Pratapa, S.
N1 - Publisher Copyright:
© 2020 Elsevier Ltd. All rights reserved.
PY - 2020
Y1 - 2020
N2 - Two LiFePO4powders have been synthesized, i.e. using a natural ironstone and a commercial FeCl2·4H2O product as the Fe sources, and their characteristics were compared. The x-ray absorption near-edge spectroscopy (XANES) data, Transmission Electron Microscope (TEM) images and Scanning Electron Microscope (SEM) micrographs were used to examine the value of E0and the oxidation number, determine the crystallite sizes, and determine their morphology, respectively. Results showed that the ironstone- and commercial-based LFP powders exhibited E0values of 7120.2 and 7119.6 eV respectively which are both almost equal to FeO and indicates that they have an oxidation number of 2 + as expected. In addition, the crystallite size of the ironstone-based LFP was smaller than that of the commercial one. Moreover, the SEM images showed that the natural LFP was more homogeneous than the commercial LFP.
AB - Two LiFePO4powders have been synthesized, i.e. using a natural ironstone and a commercial FeCl2·4H2O product as the Fe sources, and their characteristics were compared. The x-ray absorption near-edge spectroscopy (XANES) data, Transmission Electron Microscope (TEM) images and Scanning Electron Microscope (SEM) micrographs were used to examine the value of E0and the oxidation number, determine the crystallite sizes, and determine their morphology, respectively. Results showed that the ironstone- and commercial-based LFP powders exhibited E0values of 7120.2 and 7119.6 eV respectively which are both almost equal to FeO and indicates that they have an oxidation number of 2 + as expected. In addition, the crystallite size of the ironstone-based LFP was smaller than that of the commercial one. Moreover, the SEM images showed that the natural LFP was more homogeneous than the commercial LFP.
KW - Commercial precursor
KW - Crystallite size
KW - Ironstone
KW - LiFePO
KW - Morphology
KW - XANES
UR - http://www.scopus.com/inward/record.url?scp=85105384865&partnerID=8YFLogxK
U2 - 10.1016/j.matpr.2020.11.648
DO - 10.1016/j.matpr.2020.11.648
M3 - Conference article
AN - SCOPUS:85105384865
SN - 2214-7853
VL - 44
SP - 3361
EP - 3364
JO - Materials Today: Proceedings
JF - Materials Today: Proceedings
T2 - 7th International Conference of Advanced Materials Science and Technology, ICAMST 2019
Y2 - 25 September 2019 through 26 September 2019
ER -