期刊
CHEMICAL ENGINEERING JOURNAL
卷 440, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2022.135930
关键词
Polyaniline; Functionalized graphene; Zn2+ insertion; Aqueous zinc ion battery
资金
- Nature Science Research Project of Anhui province [2108085 MB44]
- Primary Research & Development of Anhui Province [1804a09020076, 201904a05020040]
- Research of the Institute of Environmentfriendly Materials and Occupational Health (Wuhu)
- Anhui University of Science and Technology [ALW2020YF10]
In this study, a functionalized commercial graphene and polyaniline composite was successfully synthesized and applied as a cathode material in an aqueous zinc ion battery. The composite exhibited high capacity and excellent rate performance, with the improved electrochemical behavior attributed to the formation of a conductive network and specific structures.
Polyaniline (PANI) as a typical conductive polymer has been widely applied in cathode materials of aqueous zinc ion battery (AZIB), owing to the features of high electronic conductivity and simple synthesized methods. However, the cycling instability caused of spontaneous deprotonation still limited the extensive application of PANI cathode materials. In this work, a functionalized commercial graphene (MEG) and PANI composite (MGP-1) was successfully assembled by a facile two-step method. When the MGP-1 acted as cathode material in AZIB, it demonstrated a high capacity of 184.5 mAh/g (0.2 A/g) and excellent rate performance of 137.6 mAh/g (3 A/g) compared to the PANI cathode. The corresponding analysis revealed that the boosted electrochemical behavior of MGP-1 was attributed to the large conductive network fabricated by the MEG and PANI, and the formations of -N-Zn-O- structures during discharging process. Moreover, based on the conventional H+ insertion mechanism, this work furtherly provided a H+ and Zn2+ insertion mechanism. In addition, the utilization of cheap and abundant commercial graphene would allow the graphene/polyaniline composite to be a promising cathode material applied in AZIB.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据