Synthesis and Electrochemical Properties of Li0.97+δTi0.03Fe0.97Mn0.03PO4/C Composite Cathode Material
Source abstract
Abstract
用共沉淀法合成Fe（0.97）Mn（0.03）PO4前驱体,再通过碳热还原法合成多元掺杂的Li（0.97＋δ）Ti（0.03）Fe（0.97）Mn（0.03）- PO4/C复合材料,利用X射线衍射（XRD）、扫描电镜（SEM）、傅立叶红外光谱（FTIR）等测试手段对样品的晶体结构、表观形貌、谱学性质等进行了分析研究,对其倍率放电性能及循环性能等进行了测试,并与不掺杂的LiFePO4/C复合材料进行了比较。研究表明,掺杂过程中,掺杂的Mn^4＋、Ti^4＋离子能与LiFePO4形成单一的橄榄石型晶体结构,晶型完整,产物形貌规则,平均粒径在1μm左右.用Li（0.97＋δ）Ti（0.03）Fe（0.97）Mn（0.03）PO4/C为正极材料制作的电池分别以0.2、1、5、10C倍率放电,首次放电容量为134.0、133.4、130.1和127,2mAh·g^-1,并表现出良好的循环性能.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Technologies Research · Extraction and Separation Processes
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References (10)
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