CAJ | 학술논문

以醋酸锰、硝酸锂为原料,采用乙二胺四乙酸-柠檬酸(EDTA-CA)络合法,制备了正尖晶石型LiMn_2O_4超细粉末晶体.应用TG-DSC,XRD,CV及恒流充放电测试等手段对前躯体及LiMn_2O_4粉体进行性能表征,确定了其最终的合成温度为600℃.常温下,组装成半电池,初始放电容量为120.2mAh/g,循环50次后容量保持在70%左右.
이작산맹、초산리위원료,채용을이알사을산-저몽산(EDTA-CA)락합법,제비료정첨정석형LiMn_2O_4초세분말정체.응용TG-DSC,XRD,CV급항류충방전측시등수단대전구체급LiMn_2O_4분체진행성능표정,학정료기최종적합성온도위600℃.상온하,조장성반전지,초시방전용량위120.2mAh/g,순배50차후용량보지재70%좌우.
The super-fine powders of spinel LiMn_2O_4 were synthesized using EDTA-citric acid(EDTA-CA)by solgel method with manganese acetate,lithium nitrate as raw materials.The precursor and synthesized powders of LiMn_2O_4 were characterized by TG-DSC,XRD,CV and galvanostatic charge and diseharge.It is found that the optimal sintering temperature was 600℃.At room temperature,the initial discharge capacity of the half cell was 120.2mAh/g,and the capacity can also remain 70%of inithl capacity after 50 cycles.