新能源进展
新能源進展
신능원진전
Advances in New and Renewable Enengy
2014年
5期
403-406
,共4页
张千玉%李博%康诗飞%秦恒飞%方遥%李溪
張韆玉%李博%康詩飛%秦恆飛%方遙%李溪
장천옥%리박%강시비%진항비%방요%리계
废旧锂离子电池%钛酸锂%回收
廢舊鋰離子電池%鈦痠鋰%迴收
폐구리리자전지%태산리%회수
waste lithium-ion batteries%Li4Ti5O12%recycling
利用有机溶剂法回收了废旧锂离子电池中的钛酸锂负极材料,并对回收的钛酸锂材料的结构、形貌和电化学性能进行了测试。XRD 结果表明,材料除炭后添加适量锂源进一步合成得到的产物具有尖晶石结构,且不含其他的杂质。SEM 图像显示,其颗粒分布均匀、无团聚现象。EIS 结果表明,最终回收的钛酸锂电极材料比未添加锂源进行煅烧处理的材料具有较小的电荷转移阻抗和较高的锂离子扩散系数。在0.1 C倍率下,经过100次循环后其容量保持率为92.4%,具有优异的循环稳定性和可逆性,可以实现循环利用。
利用有機溶劑法迴收瞭廢舊鋰離子電池中的鈦痠鋰負極材料,併對迴收的鈦痠鋰材料的結構、形貌和電化學性能進行瞭測試。XRD 結果錶明,材料除炭後添加適量鋰源進一步閤成得到的產物具有尖晶石結構,且不含其他的雜質。SEM 圖像顯示,其顆粒分佈均勻、無糰聚現象。EIS 結果錶明,最終迴收的鈦痠鋰電極材料比未添加鋰源進行煅燒處理的材料具有較小的電荷轉移阻抗和較高的鋰離子擴散繫數。在0.1 C倍率下,經過100次循環後其容量保持率為92.4%,具有優異的循環穩定性和可逆性,可以實現循環利用。
이용유궤용제법회수료폐구리리자전지중적태산리부겁재료,병대회수적태산리재료적결구、형모화전화학성능진행료측시。XRD 결과표명,재료제탄후첨가괄량리원진일보합성득도적산물구유첨정석결구,차불함기타적잡질。SEM 도상현시,기과립분포균균、무단취현상。EIS 결과표명,최종회수적태산리전겁재료비미첨가리원진행단소처리적재료구유교소적전하전이조항화교고적리리자확산계수。재0.1 C배솔하,경과100차순배후기용량보지솔위92.4%,구유우이적순배은정성화가역성,가이실현순배이용。
The waste lithium-ion batteries were recycled by an organic solvent immersion method. The structure, morphology and electrochemical performance of the recycled Li4Ti5O12(LTO) were characterized. The recycled LTO was then used as anode material for lithium-ion battery. XRD results revealed that the material, which was synthesized by adding appreciate amount of lithium source, was pure and possessed a spinel structure. SEM images exhibited that the final recycled powder has a uniform particle distribution without agglomeration. EIS results demonstrated that the electrode material obtained by sintering after removing the carbon away has smaller charge transfer resistance and higher lithium ion diffusion coefficient than the material without adding lithium resource. Moreover, at 0.1 C rate after 100 cycles, its capacity remained at 92.4%, exhibited better cyclic stability and reversibility, which can be reused as anode material for lithium-ion battery.