Investigation of nitriding treated Ni-free stainless steel as current collector for 5 V-class Li-ion secondary cell
Investigation of nitriding treated Ni-free stainless steel as current collector for 5 V-class Li-ion secondary cell
复制标题
氮化处理无镍不锈钢作为5V级锂离子二次电池集流体的研究
DOI：
10.1016/j.electacta.2018.11.113
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发表时间：
2019
影响因子：
6.6
通讯作者：
Umeda Minoru
中科院分区：
文献类型：
--
作者：
Shironita Sayoko;Ihsan Neil;Konakawa Kotaro;Souma Kenichi;Umeda Minoru
制备了氮化无Ni不锈钢，并在非水溶液中进行电化学评价，以用作5V级锂离子二次电池正极的集流体。氮化不锈钢，其特征在于使用表面电导率计，X射线衍射，辉光放电发射光谱。在1 mol dm− 3LiPF 6/EC：DMC（1：1 vol%）中获得循环伏安图。结果表明，经氮化处理后，α-Fe的导电性和晶体结构基本保持不变。然而，结果还表明，在表面上形成Al和Cr的氧化物、氮化物或氮氧化物。未处理的不锈钢在非水溶液中引起轻微的阳极溶解。相反，发现氮化不锈钢在1.5- 5.4V（相对于Li/Li+）下几乎不经历阳极溶解，并且具有用于5V级Li离子二次电池的正极的宽电化学窗口。
Nitrided Ni-free stainless steel was prepared and evaluated electrochemically in a non-aqueous solution for use as a current collector for a positive electrode for 5 V-class Li-ion secondary battery. The nitrided stainless steel was characterized using a surface conductivity meter, X-ray diffraction, and glow discharge optical emission spectroscopy. The cyclic voltammogram was obtained in 1 mol dm−3LiPF6/EC: DMC (1:1 vol%). As the results indicate, the electrical conductivity and crystal structure of α-Fe remained after the nitrogen heat treatment. However, the results also suggest that oxides, nitrides, or nitrogen oxides of Al and Cr are formed on the surface. The untreated stainless steel brought about slight anode dissolution in a non-aqueous solution. In contrast, it was found that the nitrided stainless steel hardly underwent anodic dissolution at 1.5–5.4 V vs. Li/Li+, and has a wide electrochemical window for use in a positive electrode of a 5 V-class Li-ion secondary battery.