摘要
通过水热法制备了Ni-Co前驱体纳米线,随后将其在空气氛围中煅烧处理得到链状NiCo 2O 4纳米线。为进一步研究单根链状NiCo 2O 4纳米线的微结构和电学性能之间的关系,在场发射透射电镜内利用STM-TEM样品台将单根链状NiCo 2O 4纳米线连接在两个电极之间,并研究其原位电学性能变化。结果表明:对纳米线施加5 V的电压,经过一段时间后,电流引起的焦耳热会使温度升高,纳米线的结构由链状逐渐转变成一根单晶的完整纳米线结构,电学性能明显改进,其原因是单晶纳米线电子传输过程中不会受到阻挡。
We have fabricated chain-like NiCo 2O 4 nanowires via a facile and environmentally friendly hydrothermal method and followed by calcined in air ambient. In this work, the in-situ electrical properties of the individual chain-like NiCo 2O 4 nanowires were performed by STM-TEM holder in order to further study the relationship between the microstructure and electrical properties of individual chain-like NiCo 2O 4 nanowire. The results show that the nanostructure of the NiCo 2O 4 nanowire gradually changes from chain-like to single-crystalline nanowire with improved electrical properties under 5 V voltage as a result of the electron transfer process of single crystal nanowires will not be blocked. These results provide important reference values for the built of high-performance electrode materials in future.
作者
徐开兵
沈越年
李志豪
陈晓
邹儒佳
XU Kaibing;SHEN Yuenian;LI Zhihao;CHEN Xiao;ZOU Rujia(Research Center for Analysis and Measurement,Shanghai 201620, China;College of Materials Science and Engineering,Donghua University, Shanghai 201620, China)
出处
《实验室研究与探索》
CAS
北大核心
2019年第8期31-33,共3页
Research and Exploration In Laboratory
基金
国家自然科学基金资助项目(51602049)
关键词
原位透射电子显微镜
纳米线
电学性能
in-situ transmission electron microscope (TEM)
nanowire
electrical property
