期刊
MICRO & NANO LETTERS
卷 14, 期 8, 页码 887-891出版社
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/mnl.2018.5648
关键词
scanning electron microscopy; X-ray diffraction; electrodeposition; electrochemical electrodes; secondary cells; lithium compounds; dendrites; silver compounds; dendritic silver hierarchical structures; citric acid; electrochemical deposition method; anode materials; Li ion batteries; deposition time; deposition current; X-ray diffraction; scanning electron microscopy; parallel direction; size 230; 0 nm to 320; 0 nm; temperature 0; 1 degC to 5; 0 degC; AgNO3
资金
- National Natural Science Foundation of China [21673200, U1604121]
- Henan Province Science and Technology Key Project [162102410088]
- Program for Innovative Research Team in University of Henan Province [19IRTSTHN026]
Dendritic silver hierarchical structures were prepared via a simple electrochemical deposition method in the presence of citric acid. The influence of the molar ratio of citric acid and AgNO3, the deposition time and the deposition current on the crystalline and morphology of the products were studied by X-ray diffraction and scanning electron microscopy. Dendritic silver hierarchical structures consist of a long trunk with secondary branches, which grew in a parallel direction with a definite angle to the trunk. The average diameter of the trunk is 230-320 nm, that of the secondary branches is about 250 nm and the length of the branches is about 850 nm. The charge specific capacity of dendritic silver hierarchical structures was stable at around 250 mAh g(-1) after 500 cycles at 0.1C. They also exhibited excellent rate capability at the various current rates from 0.1 to 5C.
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