Abstract
Silver nanowire has potential applications on transparent conducting film and electrode of electrochemical capacitor due to its excellent conductivity. Transparent conducting film (G‐film) was prepared by coating silver nanowires on glass substrate using Meyer rod method, which exhibited better performance than carbon nanotube and graphene. The conductivity of G‐film can be improved by increasing sintering temperature. Electrode of electrochemical capacitor (I‐film) was fabricated through the same method with G‐film on indium tin oxide (ITO). CV curves of I‐film under different scanning rates had obvious redox peaks, which indicated that I‐film exhibited excellent electrochemical pseudocapacitance performance and good reversibility during charge/discharge process. In addition, the specific capacitance of I‐film was measured by galvanostatic charge/discharge experiments, indicating that I‐film exhibits high special capacitance and excellent electrochemical stability.
Highlights
In recent years, noble metal nanomaterials, especially silver nanomaterial become the focus of research because of their unique physical and chemical properties, which has been widely used in catalysis [1], optical, electrical [2, 3], and antibacterial [4] areas
Without fine control of reactant concentrations and growth process, the obtained silver nanowires are always in low yield accompanied by large amounts of by-products such as nanocubes or nanospheres growing from isotropic seeds, which influences the properties of silver nanowire films
We found that increasing the sintering temperature is a facile and effective way to improve the conductivity of silver nanowire film
Summary
Noble metal nanomaterials, especially silver nanomaterial become the focus of research because of their unique physical and chemical properties, which has been widely used in catalysis [1], optical, electrical [2, 3], and antibacterial [4] areas. Apart from increasing the length of nanowire to improve its properties, Hu et al applied mechanical pressing method to reduce the resistance of junctions, which can make connection of silver nanowires closer leading to the increase of the conductivity [19]. They found that coating gold on the film is an efficient way, which can make the surface of silver nanowire smooth leading to the decrease of the junction resistance. Zhu et al [20] used plasma treatment to remove the polymer coated on the surface of silver nanowire and welded the junctions, improving the performance of silver nanowire
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