Excellent electrochemical performance of the SiOx-G/PAA-PANi/Cu as anode materials for lithium-ion battery

Yuanhong Liaoa , Kang Lianga , Yurong Ren*a & Xiaobing Huangba School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou, Chinab Hunan Province Cooperative Innovation Center for the Construction & Development of Dongting Lake Ecological Economic Zone, Hunan Provincial Key Laboratory of Water Treatment Functional Materials, Hunan Province Engineering Research Center of Electroplating Wastewater Reuse Technology, College of Chemistry and Materials Engineering, Hunan University of Arts and Science, Changde, People’s Republic of ChinaCONTACT Yurong Ren ryrchem@163.com School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, ChinaABSTRACTThe SiOx-G/PAA-PANi/Cu (SGPP/Cu) was synthesised as the anode material for lithium-ion batteries (LIBs). The combination of PAA-PANi/Cu and SiOx/graphite (SG) composite was fabricated via in-situ polymerisation process. The electrode reveals a first discharge capacity of 1455.3 mAh g−1 with the initial coulombic efficiency (ICE) of 73.85% and capacity of 903.8 mAh g−1 after 100 cycles at a current density of 500 mA g−1. The outstanding electrochemical performance could be traced to the 3D stereoscopic structure of conductive hydrogels, which could provide a large internal space. And also the Cu ion could enhance the conductivity of the SGPP.