石墨烯
阳极
材料科学
氧化物
聚苯乙烯磺酸盐
化学工程
介电谱
扫描电子显微镜
镁
腐蚀
磺酸盐
无机化学
电化学
化学
纳米技术
复合材料
冶金
电极
佩多:嘘
聚合物
钠
物理化学
工程类
作者
Jingling Ma,Cuiran Liu,Conghui Qin,Xingliang Jia,chenfei zhang,Fang Ren,Guangxin Wang
标识
DOI:10.1149/1945-7111/ac4f6d
摘要
Three kinds of water-soluble graphene: (WSG: polystyrene sulfonate, titanate coupling agent and glucose)/reduced graphene oxide were prepared for fabricating magnesium-air batteries with AP65 anode. Corrosion behaviour and discharge performance were investigated. The three kinds of water-soluble graphene added respectively in NaCl solution result in a more negative potential and a lower exchange current density in the potentiodynamic polarization curve of AP65 anode. The comprehensive discharge performance of the magnesium-air battery with the polystyrene sulfonate/reduced graphene oxide (PSS/RGO) is better than other 3 batteries. This is due to non-covalent adsorption of PSS on RGO and π − π interactions formed between PSS and RGO, which prevents graphene from agglomeration. PSS/RGO not only improves the ionic conductivity of solution, but also reduces the anode corrosion. Results of X-ray diffraction, fourier transform infrared spectrophotometer, scanning electron microscope and electrochemical impedance spectroscopy correlate well with the discharge and corrosion performance of AP65 anode in three water-soluble graphene solutions.
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