摘要
通过高温固相法制备了钠离子电池正极材料Na_(2/3)Ni_(1/3)Mn_(2/3)O_(2),并对Na_(2/3)Ni_(1/3)Mn_(2/3)O_(2)的合成工艺参数进行了研究。通过对不同条件下制得的正极材料进行物化性质与电化学性能的表征,确定材料的最佳合成温度为900℃,最佳保温时间为12 h。在2~4.5 V电压区间内,0.2 C倍率下,材料首周的放电容量为110 mAh·g^(-1),100周充放电后的可逆容量为86 mAh·g^(-1),容量保持率达78.1%。
The sodium-ion battery anode material Na_(2/3)Ni_(1/3)Mn_(2/3)O_(2)was prepared by high temperature solid-state method and then the parameters for the synthesis process for the material were studied.Based on the characterization of the physicochemical properties and electrochemical properties of the anode materials prepared under different conditions,the optimal synthesis temperature for the material was determined to be 900℃and the optimal holding time was 12 h.In the range of voltages from 2 V to 4.5 V,under the rate of 0.2 C,the discharge capacity of the material in the first cycle was 110 mAh·g^(-1),while its reversible capacity after 100 cycles of charging and discharging was 86 mAh·g^(-1),and so its capacity retention rate was 78.1%.
作者
罗绍华
包硕
LUO Shaohua;BAO Shuo(School of Resources and Materials,Northeastern University at Qinhuangdao,Qinhuangdao 066004,Hebei,China;School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051,Liaoning,China)
出处
《鞍钢技术》
CAS
2022年第1期1-4,共4页
Angang Technology
基金
国家自然科学基金(51874079)。
