Novel nanocomposites of Ni-Pc/polyaniline for the corrosion safety of the aluminum current collector in the Li-ion battery electrolyte

Abstract

In electrochemical energy storage systems, Li-ion batteries have drawn considerable interest. However, the corrosion of the aluminum current collector in the LiN(SO2CF3)2 electrolyte has a major effect on battery efficiency. To protect the current collector from the corrosive action of the LiN(SO2CF3)2 electrolyte, new nanocomposites based on Ni(II)tetrakis[4-(2,4-bis-(1,1-dimethyl-propyl)-phenoxy)]phthalocyanine (Ni-Pc) and polyaniline matrix (PANI) (i.e. PANI@Ni-Pc composites) are coated on the aluminum current. SEM, XRD, and EDS were used to characterize the PANI@Ni-Pc composite. This method represents a novel approach to the production of Li-ion batteries. Electrochemical tests show that the PANI@Ni-Pc composites can protect aluminum from corrosion in LiN(SO2CF3)2. The output of PANI@Ni-Pc composites is influenced by the Ni-Pc concentration. The composite PANI@Ni-Pc is a promising way forward to build high-stability Li-Ion batteries.

Controlling Magnesium Self-Corrosion in Mg–Air Batteries with the Conductive Nanocomposite PANI@3D-FCNT

“…The neat PANI coating can work as a physical barrier to decrease the contact between the Mg electrode and 3.5 wt % NaCl. , This causes a decrease in the corrosion rate of the Mg electrode (1.99 × 10 –4 A cm –2 ) and increases the R ct (1253 Ω cm 2 ). Unluckily, the anticorrosion efficiency of neat PANI (i.e., 77.6%) is not enough to minimize the corrosion of the Mg electrode.…”

Using conductive carbon fabric to fabricate binder‐free Ni‐rich cathodes for Li‐ion batteries

“…The highly alkaline water-processed NCM 811 slurries (pH > 11) corrode the conventional Al-foil current collector, [13][14][15] and the addition of insulating binder increases the electrode resistance. Therefore, in this study, we prepared three binder-free NCM 811 slurries with different mass ratios of NCM 811 to nano-CB (97:3, 90:10, and 85:15) and cast them on CF.…”

“…The rich Li‐related residues cause high alkalinity in the prepared slurries. When those slurries are processed through the eco‐friendly water‐based course, the equilibrium pH would exceed 11, which can cause severe corrosion of the Al current collector during slurry casting and drying 13‐17 . Additionally, most NCM powders exhibit poor electronic and ionic conductivity 18,19 .…”

“…When those slurries are processed through the ecofriendly water-based course, the equilibrium pH would exceed 11, which can cause severe corrosion of the Al current collector during slurry casting and drying. [13][14][15][16][17] Additionally, most NCM powders exhibit poor electronic and ionic conductivity. 18,19 Based on the above considerations, we propose using carbon fabric (CF) woven from carbon fiber bundles with accessible pores to replace Al foil as the conductive matrix (ie, current collector) for Nirich NCM cathodes.…”

Data-driven prediction of battery failure for electric vehicles

“…Over the past decades, great efforts have been made to improve the safety of battery systems in the safety enhancement at the material and cell levels (Wu et al, 2014;Liu et al, 2018b;Deyab et al, 2021), datadriven prediction methods using physics-based models (Deng et al, 2018;Finegan et al, 2020), and investigation of failure mechanism and mitigating solutions (Feng et al, 2017;Galushkin et al, 2018;Wang et al, 2019;Bla et al, 2020;Chombo and Laoonual, 2020;Feng et al, 2020;Xiong et al, 2020;Chen et al, 2021;Li et al, 2021a). Nevertheless, safety issues related to battery failures in real-world applications are still a serious issue for EVs.…”