Modification of aluminum current collectors with laser-scribed graphene for enhancing the performance of lithium ion batteries

Roll-to-Roll Scale Fabrication of High-Performance Graphene-Assembled Film Cathode Current Collectors for Lithium-Ion Batteries

“…However, for the consideration of mobile portability, the obvious drawback of these metallic materials is huge weight, accounting for about 15 and 50% of the total mass of cathode and anode, respectively, , resulting in a huge loss of specific energy of the battery. Second, owing to the relatively smooth surface, the adhesion between these metallic current collectors and electrode material is weak, leading to a potential risk of falling off of active materials during the charging/discharging process and an increase in interfacial contact resistance, which in turn reduce the capacity and rate capability of the battery. − Third, these metallic current collects are prone to localized corrosion during the long-term charging/discharging process, , reducing the reliability of LIBs. Lastly, batteries generally operate with nonuniform temperature, while the thermal conductivity of these metallic current collects is low and insufficient to homogenize the heat, which increases the risk of thermal runaway.…”

Laser‐Assisted Interfacial Engineering for High‐Performance All‐Solid‐State Batteries

“…The LIG interlayer can also improve the interface properties between the electrode and the CCs. [119] A conductive LIG interlayer can be formed on Al CCs via the CO 2 laser scribing of PI layers and improved the physical adhesion by eliminating voids at the electrode/CC interfaces. The LIG interlayer significantly improved the adhesion strength (0.395!0.648 kgf cm À 2 ) and reduced the interfacial resistance (17.56!3.18 Ω cm 2 ) between the electrode and Al CCs.…”

Corrosion and protection of aluminum current collector in lithium-ion batteries

“…The chemical property of Al corrosion is characterized by X-ray diffraction (XRD), 79 Raman, 80 Fourier transform infrared spectroscopy (FTIR), 81 X-ray photo electron spectroscopy (XPS), 40 time-of-flight secondary ion mass spectrometer (TOF-SIMS), 82 inductively coupled plasma-atomic emission spectrometry (ICP-OES), 83 nuclear magnetic resonance (NMR), 84 and X-ray absorption near-edge spectroscopy (XANES). 85 The change of atomic structure can be recorded during the corrosion process by XRD.…”

“…68 The morphology characterization: SEM, 71 TEM, 72 CT, 74 UT, 75 AFM, 70 LSCM, 76 EBSD, 77 STM 78 . The chemical characterization: XRD, 79 XPS, 40 Raman, 80 FTIR, 81 ToF-SIMS, 82 ICP-OES, 83 NMR, 84 XANES. 85 prepared by the electrolyte additives fluorinated carbamates in LiTFSI based electrolyte (Figure 5C).…”

“…[119][120][121] Graphene as an inhibitor can effectively prevent the corrosion, but the challenge is how to prepare high quality graphene film on Al. 61,80 Insitu growing graphene in Al is preferred because of their ideal contact and high coverage between graphene and Al. 61 Plasma enhanced chemical vapor deposition was used to grow multilayer graphene on Al foil as shown in Figure 7A.…”