Dendritic silver hierarchical structures for anode materials in Li ion batteries

Micro & nano letters

article

Jing Li¹  Wenjun Fa¹  Hongxiao Zhao¹  Congxu Zhu¹  Huimin Jia¹  Longyan Gu¹ 

[1] Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, College of Advanced Materials and Energy, Institute of Surface Micro and Nano Materials, Xuchang University;Henan Joint International Research Laboratory of Nanomaterials for Energy and Catalysis, Xuchang University

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;   

DOI  :  10.1049/mnl.2018.5648

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

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 AgNO 3 , 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.

【 授权许可】

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