Park, Sang-Eun Lee, Sang-Wha Yang, Daniel Lee, Joong Kee 2024-01-20T19:31:42Z 2024-01-20T19:31:42Z 2021-09-02 2010-05 0031-8949 https://pubs.kist.re.kr/handle/201004/131523 Fe3O4 nanoparticles were coated with a SiO2 layer by using a modified sol-gel method. The synthetic procedures for Fe3O4 nanoparticles encapsulated with a SiO2 layer (SiO2@Fe3O4) consist of three consecutive steps: (i) fabrication of Fe3O4 by the co-precipitation method, (ii) stabilization of Fe3O4 with citrate as a capping agent, which is used to prevent particles from aggregating, and (iii) silica encapsulation by a modified sol-gel reaction. Based on the experimental range, SiO2@Fe3O4 exhibited higher cyclic performance than the intrinsic one. The reversible capacity of Fe3O4 with SiO2 at the first cycle was 363 mA h g(-1) and the remaining discharge capacity was 321 mA h g(-1) after the 30th cycle. English IOP PUBLISHING LTD ION BATTERIES ELECTROCHEMICAL PROPERTIES NANOCOMPOSITE ELECTRODES MATRIX Encapsulated Fe3O4 nanoparticles with silica thin layer as an anode material for lithium secondary batteries Article 10.1088/0031-8949/2010/T139/014027 1 PHYSICA SCRIPTA, v.T139 PHYSICA SCRIPTA T139 scie scopus 000278323100028 2-s2.0-77954705126 Physics, Multidisciplinary Physics Article; Proceedings Paper ION BATTERIES ELECTROCHEMICAL PROPERTIES NANOCOMPOSITE ELECTRODES MATRIX Encapsulated Fe3O4 silica thin layer anode