CAJ | 학술논문

研究了在空气下固相合成LiNixCo1-xO2的工艺及反应预处理方式、不同锂源、温度、时间和配比等因素对产品结构与性能的影响．结果表明：采用LiOH为锂源、采取混合研磨后压块以及烘干Ni(OH)2、Co(OH)2后加入氢氧化锂的预处理方式更有利于合成反应的进行；在600℃预烧一段时间的条件下，750℃恒温合成的产物比650℃、850℃保温合成的产物层状结构更明显，首次充电容量更高；在一定范围内，随合成时间的增长，产物的衍射峰强度增大，结构更完整，电性能更好；按镍钴的不同配比，均能合成结构良好的LiNixCo1-xO2，而配比为n(Li):n(Ni):n(Co)=1.15:0.3:0.7时合成的产物初始容量较高，达到156.146 mAh/g.
연구료재공기하고상합성LiNixCo1-xO2적공예급반응예처리방식、불동리원、온도、시간화배비등인소대산품결구여성능적영향．결과표명：채용LiOH위리원、채취혼합연마후압괴이급홍간Ni(OH)2、Co(OH)2후가입경양화리적예처리방식경유리우합성반응적진행；재600℃예소일단시간적조건하，750℃항온합성적산물비650℃、850℃보온합성적산물층상결구경명현，수차충전용량경고；재일정범위내，수합성시간적증장，산물적연사봉강도증대，결구경완정，전성능경호；안얼고적불동배비，균능합성결구량호적LiNixCo1-xO2，이배비위n(Li):n(Ni):n(Co)=1.15:0.3:0.7시합성적산물초시용량교고，체도156.146 mAh/g.
To prepare cheaper and better cathode materials for lithium ion battery, LiNi x Co 1-x O2 (0 ≤ x ≤ 1 )was studied and synthesized in solid phase in air. The effect of pretreatment method, lithium resource, synthe-sis temperature, heat treatment time and ratio of raw materials on the products were discussed. The resultsshow that the use of LiOH as lithium resource and making extrusion molding after mixing and grinding raw andprocessed materials are beneficial to synthesize the samples. The products preheated at 600 ℃ and then sin-tered under constant temperature at 750 ℃ is better than those sintered under constant temperature at 650 ℃or 850 ℃, and their layer feature of structure is more obvious and the initial capacity is higher. The longer thehot-treating time, the stronger the intensity of XRD peaks and the better are their structures and electrochemi-cal properties. The samples LiNi xCo 1-x O2 (0 ≤ x ≤ 1 ) with good structure and electrochemical performanceare synthesized. And initial capacity of the product is perfect when n (Li): n (Ni): n (Co)=1.15:0.3: 0.7, even to 156. 146 mAh/g.