Open AccessDendritic silver hierarchical structures for anode materials in Li ion batteries
Author(s) -
Li Jing,
Fa Wenjun,
Zhao Hongxiao,
Zhu Congxu,
Jia Huimin,
Gu Longyan
Publication year - 2019
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2018.5648
Subject(s) - anode , scanning electron microscope , electrochemistry , deposition (geology) , citric acid , materials science , dendrite (mathematics) , nanotechnology , diffraction , chemical engineering , ion , molar ratio , chemistry , composite material , optics , electrode , organic chemistry , catalysis , geometry , engineering , paleontology , mathematics , physics , sediment , biology
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.