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Abstract Li 2 Mn 1−x Ni x SiO 4 /C (x=0, 0.02, 0.04, 0.06, and 0.08) nanocomposites were successfully prepared by a citric acid assisted sol-gel method. The physical properties… Click to show full abstract
Abstract Li 2 Mn 1−x Ni x SiO 4 /C (x=0, 0.02, 0.04, 0.06, and 0.08) nanocomposites were successfully prepared by a citric acid assisted sol-gel method. The physical properties and electrochemical performance test results showed that substituting part of Mn 2+ with Ni 2+ was effective in reducing the agglomeration phenomenon, decreasing the particle size, and enhancing the electrochemical properties. In particular, Li 2 Mn 0.94 Ni 0.06 SiO 4 /C delivered the highest initial discharge capacity of about 182.9 mA h g − 1 at 0.1 C, which was related to the decreased charge transfer resistance and enhanced lithium ion diffusion for Ni-doped samples.
Journal Title: Materials Letters
Year Published: 2017
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