Tin - based composite oxides anode materials for lithium - ion thin - film batteries have been prepared by high - erergy ball - milling method.The phase evolution,morphology and electrochemical properties of the mater...Tin - based composite oxides anode materials for lithium - ion thin - film batteries have been prepared by high - erergy ball - milling method.The phase evolution,morphology and electrochemical properties of the materials were investigated by X - ray diffraction,scanning electron microscopy,cyclic voltammetry,charge - discharge test.The re - sults show milling can cause the stannous oxide crystal losing its crystalli ne character and becoming the amor - phous structure.The particle size of the powder materials decreases with the increase of ball - milling time.The re - versible specific capacity is more than578mAh·g -1 and its capacity loss per cycle is only0.31%after being cy - cled20times,which indicates that the material prepared by this method has go od electrochemical behavior and may be a candidate for the next generation anode materials for lithiumn ion batteries.展开更多
锡基氧化物材料因其高理论容量而被作为锂离子、钠离子电池负极材料得到了广泛的关注。本文通过一步水热法合成了由纳米棒构成的锡酸锌(Zn2SnO4)纳米花,并将其作为锂离子、钠离子电池负极材料进行了电化学性能的探究。在作为锂离子电池...锡基氧化物材料因其高理论容量而被作为锂离子、钠离子电池负极材料得到了广泛的关注。本文通过一步水热法合成了由纳米棒构成的锡酸锌(Zn2SnO4)纳米花,并将其作为锂离子、钠离子电池负极材料进行了电化学性能的探究。在作为锂离子电池负极材料时,Zn2SnO4纳米花能够提供989.8mAhg^-1的可逆容量,且循环50圈后,其容量保持在730.5 mAh g^-1;而作为钠离子电池负极材料时,Zn2SnO4纳的可逆容量为260.1 mAh g^-1,循环80圈后的容量保持在207.3 mAh g^-1。结果表明Zn2SnO4纳米花具有优于多数纯相锡基材料的循环性能,体现了该材料双金属组分及其特殊的纳米花结构在电化学储能方面的优势。展开更多
文摘Tin - based composite oxides anode materials for lithium - ion thin - film batteries have been prepared by high - erergy ball - milling method.The phase evolution,morphology and electrochemical properties of the materials were investigated by X - ray diffraction,scanning electron microscopy,cyclic voltammetry,charge - discharge test.The re - sults show milling can cause the stannous oxide crystal losing its crystalli ne character and becoming the amor - phous structure.The particle size of the powder materials decreases with the increase of ball - milling time.The re - versible specific capacity is more than578mAh·g -1 and its capacity loss per cycle is only0.31%after being cy - cled20times,which indicates that the material prepared by this method has go od electrochemical behavior and may be a candidate for the next generation anode materials for lithiumn ion batteries.
文摘锡基氧化物材料因其高理论容量而被作为锂离子、钠离子电池负极材料得到了广泛的关注。本文通过一步水热法合成了由纳米棒构成的锡酸锌(Zn2SnO4)纳米花,并将其作为锂离子、钠离子电池负极材料进行了电化学性能的探究。在作为锂离子电池负极材料时,Zn2SnO4纳米花能够提供989.8mAhg^-1的可逆容量,且循环50圈后,其容量保持在730.5 mAh g^-1;而作为钠离子电池负极材料时,Zn2SnO4纳的可逆容量为260.1 mAh g^-1,循环80圈后的容量保持在207.3 mAh g^-1。结果表明Zn2SnO4纳米花具有优于多数纯相锡基材料的循环性能,体现了该材料双金属组分及其特殊的纳米花结构在电化学储能方面的优势。
