Modification of Li4Ti5O12 Anode Material with Urea as Ni-trogen Source for Lithium Ion Battery
Source abstract
Abstract
Li 4 Ti 5 O 12 是最具前景的混合电动汽车用锂离子动力电池负极材料之一. 为了提高其倍率性能, 以尿素为氮源对Li 4 Ti 5 O 12 进行掺杂热处理, 以在Li 4 Ti 5 O 12 颗粒表面自生长一层高电导TiN修饰膜, 利用X射线衍射仪、扫描电镜、透射电镜、X射线能谱仪、Raman光谱仪和半电池充放电测试仪研究了材料的物相、结构、形貌、成分以及电化学性能. 结果表明: 氮化修饰Li 4 Ti 5 O 12 样品与未修饰样品具有相同的尖晶石Li 4 Ti 5 O 12 的衍射峰, 氮化修饰后Li 4 Ti 5 O 12 颗粒表面自生长了一层均匀的薄膜, 该薄膜不仅含有N元素, 而且还具有TiN的Raman光谱特征振动峰;氮化修饰Li 4 Ti 5 O 12 样品的0.1 C 首次放电比容量比未修饰Li 4 Ti 5 O 12 样品有所降低, 但是却展示了优异的电化学倍率性能和循环性能, 3 C 倍率充放电比容量是未修饰Li 4 Ti 5 O 12 样品的2.6倍, 0.1 C 充放电循环100次后其容量损失仅3%.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Battery Materials · Semiconductor materials and interfaces · Advanced Battery Materials and Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (19)
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