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Polyaniline/Copper Composite Anode Current Collectors Prepared through Electrochemical Polymerization for Lithium‐Ion Batteries
ChemElectroChem ( IF 3.5 ) Pub Date : 2020-06-15 , DOI: 10.1002/celc.202000692
Yunyan Zhang 1 , Rengui Xiao 1 , Xia Liao 1 , Zhiming Ma 1 , Yu Huang 1 , Qianqian Li 1
Affiliation  

Herein, a new type of composite anode with a Cu foil current collector modified with polyaniline (PANI) was prepared (PANI/Cu). SEM manifests that the PANI layer is 1.8 μm thick and composed of PANI particles with a diameter of 50 nm nanometers, which provides a large contact surface area to enhance the strength of adhesion to the electrode material. FTIR and UV/Vis analysis confirmed that the PANI layer existed in the emeraldine (conductive) form. Half‐cells were assembled by using PANI/Cu and bare/Cu (both coated with Li4Ti5O12 electrode material) as the working electrode, and Li wafers as the counter electrode. Cycling performance tests demonstrated that, after cycling for 500 cycles at 1 C, the discharge capacity was 155.0 mAh g−1 and 137.6 mAh g−1 for PANI/Cu battery and bare/Cu battery, respectively. Electrochemical impedance revealed the impedance of the PANI/Cu battery is decreased effectively by the PANI layer.

中文翻译:

电化学聚合制备锂离子电池用聚苯胺/铜复合阳极集电器

在此,制备了一种新型的复合阳极,该复合阳极具有经聚苯胺(PANI)改性的Cu箔集电器(PANI / Cu)。SEM表明,PANI层为1.​​8μm厚并且由直径为50nm纳米的PANI颗粒组成,其提供了大的接触表面积以增强对电极材料的粘附强度。FTIR和UV / Vis分析证实PANI层以翡翠(导电)形式存在。通过使用PANI / Cu和裸露/ Cu(均涂有Li 4 Ti 5 O 12电极材料)作为工作电极,并使用Li晶片作为对电极来组装半电池。循环性能测试表明,在1 C循环500次之后,放电容量为155.0 mAh g -1对于PANI / Cu电池和裸露/ Cu电池,分别为137.6 mAh g -1。电化学阻抗表明,PANI / Cu电池的阻抗被PANI层有效降低。
更新日期:2020-07-13
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