Influence of different fuel agents on the combustion synthesis of the nanostructured Li1.05Mn2O4 oxide

Materials Research

F. A. Amaral¹  R. F. Guerra¹  L. K. Santana¹  S. C. Canobre¹ 

[1] ,Universidade Federal de Uberlândia Instituto de Química Laboratório de Armazenamento de Energia e Tratamento de EfluentesUberlândia MG ,Brasil

关键词: Solution Combustion Synthesis;    cathode;    Li1.05Mn2O4 spinel;    lithium ion batteries;   

DOI  :  10.1590/S1516-14392014005000037

来源: SciELO

【 摘 要 】

In this work nanostructured Li1.05Mn2O4 oxide was obtained by Solution Combustion Synthesis (SCS) using three different fuel agents in order to obtain a unique phase with a crystalline cubic structure belonging to the Fd3m spatial group. The phase of interest could be obtained, following the order: glycine (at 600 °C for 2 h) < urea (at 750 °C for 2 h) < maleic anhydride (at 750 °C for 4 h), with crystallite size in the range from 4.6 to 9.7 nm (nanometric character) and the unit cell parameter of the calcined samples at 750 °C for 2 h were similar to the JCPDS 35-0782 with cubic structure (a = 8.247 Å). Charge and discharge tests from the samples obtained by glycine fuel (at 750 °C for 4 h) presented the highest experimental specific capacities of 115 mA h g-1 and 92% of retention after 10 cycles.

【 授权许可】

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