(1. 華南師范大學(xué) 化學(xué)與環(huán)境學(xué)院，廣州 510006；
2. 廣州能源檢測(cè)研究院，廣州 511400)
摘 要: 通過(guò)直接熱處理以及補(bǔ)充鋰元素二次燒結(jié)的方法對(duì)鋰離子電池三元鎳鈷錳廢料進(jìn)行回收，并將其重新作為鋰離子電池正極材料進(jìn)行應(yīng)用。采用掃描電鏡、紅外光譜、熱重、電感耦合等離子體以及電化學(xué)測(cè)試等方法對(duì)材料性能進(jìn)行檢測(cè)。結(jié)果表明：溫度高于700 ℃時(shí)可以有效去除報(bào)廢材料中的PVDF，高溫?zé)Y(jié)可以一定程度上修復(fù)材料容量，而通過(guò)補(bǔ)充鋰元素進(jìn)行二次燒結(jié)的方法可以有效恢復(fù)廢料性能，具有商業(yè)應(yīng)用價(jià)值。此方法工藝簡(jiǎn)單，可以為鋰離子電池正極層狀材料的回收提供參考。
關(guān)鍵字: 鋰離子電池；正極材料；廢料；回收
（1. School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China;
2. Guangzhou Energy Testing Institute, Guangzhou 511400, China）
Abstract:The scrapsLiNi0.5Co0.2Mn0.3O2 were recycled by direct sintering and adding lithium sources to reuse as cathode materials for lithium ion batteries. The performance of the materials was investigated by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), inductively coupled plasma (ICP) and electrochemical methods. The results show that the PVDF can be removed effectively when the sintering temperature is higher than 700 ℃, and sintering can recover the material performance to some degree. Sintering with Li2CO3 can effectively recover the performance of the scraps, which possess high commercial application potentials. This method can provide a significant reference for recycling the layered cathode materials.
Key words: lithium ion batteries; cathode material; scrap; recycling
