【作者】 方谋； 王要武； 赵骁； 陈敬波； 尚玉明； 毛宗强； 何向明；

【Author】 Fang Mou~1,Wang Yaowu~1,Zhao Xiao~1,Chen Jingbo~1,Shang Yuming~1,Zongqiang Mao~1,He Xiang-ming~(1,3,*) 1.Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing 100084 2.State Key Laboratory of Automotive Safety and Energy,Tsinghua University,Beijing 100084 3.Huadong Institute of Lithium Ion Battery,Zhangjiagang,Jiangsu 215600

【机构】 清华大学核能与新能源技术研究院； 汽车安全与节能国家重点实验室； 江苏华东锂电技术研究院；

【摘要】 采用控制结晶法制备的球形CoOOH前驱体颗粒饱满、结构规整、振实密度大。通过改变缓冲溶液的浓度和搅拌速度,实现了对球形产物的粒径和振实密度的控制,制备出D50从6μm到18μm不等的球形颗粒,振实密度从2.3gcm³逐步提高到2.99cm^-3。通过改变反应釜内溶液的pH值,成功地控制了CoOOH产物中Co₃O₄的含量,随着pH值的升高,产物的钴含量从63%逐步升高到70%。通过制备球形CoOOH对控制结晶法进行了初步的理论探讨。更多还原

【Abstract】 High density spherical CoOOH powders were prepared by controlled crystallization method. The structures of CoOOH was characterized by X-ray diffraction(XRD) and scanning electron microscopy(SEM).The size and tap density of the spherical powders was controlled by the concentration of buffer solution and agitating intensity and the composition of the final product was controlled by pH of the mixture in the reactor.更多还原