Zhu Jing

mpezhuji@nus.edu.sg

Organizational Unit

dept

Organizational Unit

Publication Search Results

Now showing 1 - 2 of 2

Nanostructured thin film silicon anodes for Li-ion microbatteries
(American Scientific Publishers, 2015) Omampuliyur Rajamouly S.; Bhuiyan Maruf; Zheng Han; Zhu Jing; Lu Li; Fittzgerald Eugene A.; Thompson Carl V.; Choi Wee Kiong; MECHANICAL ENGINEERING
In situ studies of lithium-ion diffusion in a lithium-rich thin film cathode by scanning probe microscopy techniques
(Royal Society of Chemistry, 2015) Yang S.; Yan B.; Li T.; Zhu J.; Lu L.; Zeng K.; MECHANICAL ENGINEERING
This paper presents in situ characterization of lithium-ion diffusion at nano- to micro-meter scales in a Li-rich layered oxide thin film cathode under external bias by using Electrochemical Strain Microscopy (ESM) and Atomic Force Microscopy (AFM) techniques. The local variations of the diffusion coefficient are calculated and visualized from the ESM images. The results indicate that the Li-ion movement is closely correlated with the changes in the surface topography when the Li-rich cathode is subjected to an external bias. Furthermore, bias-induced Li-ion redistribution is partially reversible. Topography evolution due to Li-ion diffusion and relaxation behaviour are observed. The results from this in situ study provide the insight into the Li-ion diffusion mechanism in the cathode material and pave the way for studying the details of the diffusion-related phenomenon in Li-ion battery materials. © the Owner Societies 2015.