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Zainuri (DOI: 10.12962/j24604682.v12i2.1331), Mochamad
Departemen Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Institut Teknologi Sepuluh Nopember
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Journal : Journal of Physics: Theories and Applications

 1 
Oxidation state analysis of LiFeSixP1-xO4/C (x = 0.06) with X-ray absorption near edge structure (XANES) in Fe K-edge and Si K-edge Sahara Hamas Intifadhah; Vera Laviara Maghfirohtuzzoimah; Pelangi Az-zahra; Wantana Klysubun; Fahmi Astuti; Mochamad Zainuri; Darminto Darminto
Journal of Physics: Theories and Applications Vol 5, No 1 (2021): Journal of Physics: Theories and Applications
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jphystheor-appl.v5i1.51855

Abstract

The development of LiFePO4 as a cathode materials on lithium-ion battery was increased with the use of additional techniques such as atomic doping and coating. The material used in this report was LiFeSi0.06P0.94O4/C (LFP Si-6%), synthesized with doping silicon 6% and 11wt% carbon coating by a solid state method. X-ray Absorption Spectroscopy (XAS) characterization was used to investigate the effect on electronic and atomic structure of LFP Si-6%, especially in X-ray Absorption Near Edge Strucuture (XANES) region. XANES data measured on Fe K-edge and Si K-edge. Fe foil, FeO, Fe2O3, FePO4, Si powder, SiO, SiO2 were used as a standard sample for comparison with the result of LFP Si-6%. XANES analysis showed that the energy absorption of Fe K-edge and Si K-edge in LFP Si-6% was 7124.94 eV and 1846.16 eV, respectively. The oxidation state of Fe was Fe2.576+ between Fe2+ and Fe3+, while Si was close to the estimation of Si4+. In addition, the linear combination fitting (LCF) in XANES Fe K-edge was performed to show the ratio of Fe2+/Fe3+ (FeO/Fe2O3).
Co-Authors Adhita Ferbi Irawati Agus Purwanto Agus Purwanto Agus Purwanto Agus Purwanto Agus Purwanto Ahmad Ali Akbar Amalia, Lita Ariza Noly Kosasih Arum Puspita Sari Astuti, Fahmi Badri G.S Bayu Prasetya Bintoro Anang Subagyo Cahyono, Yoyok Darminto Darminto Darminto Darminto Darminto Darminto Darminto Darminto Darminto Darminto Darminto Darminto Darminto Deril Ristiani Dessy Putri Efhana Devi Eka Septiyani Arifin Dita Viantyas Dwi Ratna Setya Pambudi Eddy Yahya Endarko Endarko Fahmi Astuti Findah Rahmawatus Sholihah Fuad D. Muttaqin Halley Henriono Hanafi, Hanafi Heny Faisal Inayati Nur Saidah Intifadhah, Sahara Hamas Kharisma Permatasari Khoirotul Yusro Lian Nunisa Usvanda Lila Yuwana Linda Silvia Linda Silvia, Linda Malik Anjelh Baqiya Masyitatus Daris S Mauliana, Metatia Intan mochamad zainul Asrori Muhammad Ilham Nur Karim Muhammad Rizki Alfirdaus Munasir, M Nurul Amalia T Nurul Amalia Triyuliana Pelangi Az-zahra Phahul Zhemas Zul Nehan Raychan Abyqa Fahriza Rohmah, Roihatur Rosyidah, Kurniawati C. Santi Puspitasari Sriyani Purwaningsih Suasmoro Suasmoro Sukamto, Heru Suminar Pratapa Susilo Indrawati Susmita Rachmawati Syabania R A Triwikantoro Triwikantoro Umi Maslakah Umi Nuraini, Umi Vera Laviara Maghfirohtuzzoimah Wantana Klysubun Yanurita Dwihapsari, Yanurita Yoni Moniada Zainal Arifin