摘要
钠离子电池(SIBs)是一种可替代锂离子电池的绿色清洁能源。由于TiO_(2)具有化学稳定性好和廉价易得的优点,被作为一种优异的插入式负极材料广泛应用于钠离子电池。通过溶胶-凝胶法合成TiO_(2)@MWCNTs纳米复合材料,并利用X射线衍射、透射电子显微镜和扫描电子显微镜对复合材料的晶体结构和形貌进行表征。以TiO_(2)@MWCNTs纳米材料为负极组装钠离子电池,并对其电化学性能进行测试。在0.1 A/g电流密度下,该电池的初始放电容量可达477 mA·h/g,在循环1000圈以后,放电容量仍然可以保持在181 mA·h/g,呈现出优异的长循环性能。
Sodium-ion battery is considered as promising alternative to lithium-ion battery.TiO_(2)is deemed to be a very promising insertion-type anode material for sodium-ion battery because of its good chemical stability and low cost.TiO_(2)@MWCNTs nanocomposites are synthesized by sol-gel method.The crystal structure and morphology of TiO_(2)@MWCNTs nanocomposites are characterized by means of X-ray diffraction,transmission electron microscope and scanning electron microscope.Sodium-ion battery is assembled with TiO_(2)@MWCNTs as anode material,and its electrochemical properties are tested.The initial discharge capacity of the battery is 477 mAh·g;at a current density of 0.1 A·g;.Its discharge capacity still remains at 181 mAh·g;after 1000 cycles,showing an excellent long-term cycle performance.
作者
叶春林
孙雪姣
郝燕荣
吕舒骏
杨慧敏
YE Chun-lin;SUN Xue-jiao;HAO Yan-rong;LV Shu-jun;YANG Hui-min(Inner Mongolia University of Science&Technology,Baotou 014010,China)
出处
《现代化工》
CAS
CSCD
北大核心
2022年第6期140-143,148,共5页
Modern Chemical Industry
基金
国家自然科学基金青年基金(21902080)
内蒙古自然科学基金(0406022003)
内蒙古自治区大学生创新创业训练计划项目(202010127022)。
