| 1. | In this work , layered lini1 - xalxo2 ( 0 < x 1 / 2 ) solid solution materials were successfully synthesized by current co - precipitation method in the air , and their preparation and properties were deeply and systematically explored . influences of different factors on the structure and properities of samples were studied , including li resources , different performs , li / m ( oh ) 2 molar ratio , calcining heat condition , the best synthesis technics were concluded : sintered for 16h at 700 from li source ( lithium nitrate ) : m ( oh ) 2 = 1 . 05 : 1 , ultrasonic vibration for dispersing and catalysing are best . lini0 . 8al0 . 2o2 exhibited a discharge capacity of 130 . 7 mah ? g - 1 in the voltage range of 2 . 8 ~ 4 . 40v and at a specific current of 0 . 2 c . a new co - precipitation method was proposed , it included ultrasonic for dispersing and catalysing , by dropping lioh to the aqueous solution of metal nitrates , hydroxides of metals were precipitated and the resulting solution was evaporated as received
采用传统共沉淀工艺在空气气氛中成功地合成出了二元lini1 - xalxo2 ( 0 < x 1 / 2 )层状固溶体系列,综合考察了不同锂源、预处理方式、锂的配比量、焙烧温度等条件对合成产物的结构和性能的影响,确定出了最佳合成工艺:以硝酸锂为锂源,超声波作为分散动力源,锂源与镍铝金属盐摩尔比为1 . 05 : 1 , 700下焙烧16h的lini0 . 8al0 . 2o2样品电化学性能最佳,在2 . 8 ~ 4 . 40v之间, 0 . 2c的倍率放电可逆容量达130 . 7mah ? g - 1 。 |
