Electrophoretically deposited binder-free 3-D carbon/sulfur nanocomposite cathode for high-performance Li–S batteries

Modern practices in electrophoretic deposition to manufacture energy storage electrodes

“…EPD has been successfully utilised in the manufacture of sulphur‐based cathodes, largely through the preparation of suitable conductive films, which act as host materials for sulphur. For example, Chung and co‐workers successfully used the EPD process without binding agents to decorate a carbon fibre paper (CFP) with carbonaceous nanomaterials to prepare cathodes for Li‐S battery applications 181 . The S cathode modified with EPD of CNT on CFP (EPD:CFP/CNT) provided a capacity of around 2.2 times higher (upon completing 50 cycles) than that supplied by its counterpart without the EPD‐CNT coating (CFP/S cell) at 0.1 C. Also, the CFP/S electrode's rate capability could be elevated by means of a combination of the EPD‐CNT/carbon black and EPD‐CNT electrode materials on the CFP surface.…”

“…For example, Chung and coworkers successfully used the EPD process without binding agents to decorate a carbon fibre paper (CFP) with carbonaceous nanomaterials to prepare cathodes for Li-S battery applications. 181 The S cathode modified with EPD of CNT on CFP (EPD:CFP/CNT) provided a capacity of around 2.2 times higher (upon completing 50 cycles) than that supplied by its counterpart without the EPD-CNT coating (CFP/S cell) at 0.1 C. Also, the CFP/S electrode's rate capability could be elevated by means of a combination of the EPD-CNT/carbon black and EPD-CNT electrode materials on the CFP surface. As such, the EPD of CNT and Pt nanoparticles resulted in an EES device that displayed a specific capacity of about 730 mAh g À1 at 1 C. 181 Finally, the EPD manufactured cathodes outperformed their counterparts prepared by means of the classical slot-die casting process, especially with regards to successive charge/discharge cycles, polarization and internal resistance.…”

“…181 The S cathode modified with EPD of CNT on CFP (EPD:CFP/CNT) provided a capacity of around 2.2 times higher (upon completing 50 cycles) than that supplied by its counterpart without the EPD-CNT coating (CFP/S cell) at 0.1 C. Also, the CFP/S electrode's rate capability could be elevated by means of a combination of the EPD-CNT/carbon black and EPD-CNT electrode materials on the CFP surface. As such, the EPD of CNT and Pt nanoparticles resulted in an EES device that displayed a specific capacity of about 730 mAh g À1 at 1 C. 181 Finally, the EPD manufactured cathodes outperformed their counterparts prepared by means of the classical slot-die casting process, especially with regards to successive charge/discharge cycles, polarization and internal resistance. This was as expected and confirmed by other investigations for EPD to prepare high-quality LiB electrodes in comparison to those made by standard slot-die casting of slurry pastes.…”

Customized Structure Design and Functional Mechanism Analysis of Carbon Spheres for Advanced Lithium–Sulfur Batteries

“…As we all know, facing the flood-like "shuttle effect," there are two main strategies to solve this problem: One is to prevent LiPSs from diffusing into the electrolyte, i.e., to confine the LiPSs in the host well. [163,164] At the same time, researchers have recognized that the "shuttle effect" of LiPSs will become more serious with high sulfur loading. [165] To better suppress the "shuttle effect" in the case of high sulfur loading, a large variety of CSs with complex structures are designed as sulfur hosts.…”

Recent Advances of Freestanding Cathodes for Li‐S Batteries

“…have been widely employed in electrode materials [36] . Ghashghaie et al [37] . deposited a crack‐free and porous CNT and carbon black (CB) layers uniformly on carbon fiber paper (CFP) and prepared the layer‐by‐layer structured cathode via the electrophoretic deposition method (EPD).…”