Dataset for "Thermal Stability of Valuable Metals in Lithium-Ion Battery Cathode Materials: Part I - Temperature Range 100-400 °C"

Observation of the behaviour of the end-of-life cathode material (NMC622) and the valuable metals contained in the cathode after exposure to temperatures in the range of 100-400 °C and comparation with the untreated material. The valuable metals (Li, Ni, Mn, Co) content was determined using ICP-OES. From the measured values, their theoretical yields were calculated. Due to the annealing at given temperatures and the subsequent dissolution, this step can be considered as the first stage of the pyrometallurgical-hydrometallurgical process used in battery recycling. The study was complemented by monitoring the samples in temperature range from 100-400 °C with further analyses - XRF, XRD, SEM/EDS andTGA.本研究观测了退役镍锰钴三元正极材料（NMC622）及其所含有价金属在100~400℃温度区间内的行为表现，并与未处理的原始试样进行对比。采用电感耦合等离子体发射光谱法（ICP-OES）对其中锂、镍、锰、钴的含量进行了测定；基于实测数据，计算得到各金属的理论回收率。由于该流程包含指定温度下的退火处理及后续溶出步骤，因此可将其视为电池回收领域所采用的火法-湿法联合冶金工艺的第一阶段。本研究还通过对100~400℃温度区间内的试样进行监测，并辅以X射线荧光光谱法（XRF）、X射线衍射（XRD）、扫描电子显微镜/能谱仪（SEM/EDS）以及热重分析（TGA）等后续分析手段，完成了研究内容的补充完善。