Hon Hai Precision Industry Co., Ltd.

Tsinghua University

Xiao-Ling Xiao

Ya-Dong Li

Wei Chen

Chen Chen

Jun Lu

Ding-Sheng Wang

A method for preparing a spinel type lithium manganese oxide cathode active material, includes providing a number of manganese dioxide hollow spheres and a lithium source powder, mixing the manganese dioxide hollow spheres and the lithium source powder in a liquid medium to achieve a mixture, drying the mixture to remove the liquid medium to achieve a precursor, and sintering the precursor at a sintering temperature of about 600&#xb0; C. to about 800&#xb0; C. for about 3 hours to about 10 hours, to achieve a number of spinel type lithium manganese oxide hollow spheres.

Method for preparing cathode active material of lithium battery

A method for preparing a cathode active material of lithium battery is shown. The method includes providing MnOOH and lithium source material, and mixing the MnOOH and the lithium source material in a liquid solvent to achieve a mixture. Then, the mixture is dried to remove the liquid solvent, thereby achieving a precursor. A temperature of the precursor is elevated from room temperature to a sintering temperature of about 500&#xb0; C. to about 900&#xb0; C. at a uniform rate, and the precursor is sintered at the sintering temperature for about 3 hours to about 24 hours.

A method for making a carbon composite material, the method including providing a 1,4-benzenedicarboxylate-metal complex in a vessel, putting the vessel carrying the 1,4-benzenedicarboxylate-metal complex into an environment with a protective gas therein, and heating the 1,4-benzenedicarboxylate-metal complex to a temperature in a range from about 500&#xb0; C. to about 1300&#xb0; C.

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Beijing, China

Xiao-Ling Xiao