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Due to its ubiquitous, cost-effective active materials and high theoretical specific energy, lithium-sulfur (Li-S) technology is one of the most promising options for next-generation energy storage.
In this study, a solvent-free, cost-effective, and long-lasting electrode dry-coating method (DRYtraec) is used in conjunction with this cell system: Only PTFE-based binders have been able to be used in this process thus far.
A renewable, biodegradable, fluorine-free polypeptide is utilized as a binder for solvent-free electrode manufacturing in order to decrease the undesirable fluorine content of Li-S batteries and improve the sustainability of electrode processing.
Utilizing the cutting-edge DME/DOL electrolyte in addition to the sparingly polysulfide solvating electrolytes HME/DOL and TMS/TTE, the yielded sulfur/carbon dry-film cathodes were electrochemically evaluated at the coin and pouch cell levels under lean electrolyte conditions.
Based on these findings, it can be concluded that the biodegradable sericin can take the place of the PTFE binder while maintaining the cathode’s cycle stability and performance.
Utilizing polymer binders that have functional groups that are polar is yet another strategy that can be used to improve the cathode’s polarity.
By keeping the formed PS in the cathode and reducing the PS shuttle, it was demonstrated that the use of polar polymers as a binder or cathode coating increases capacity retention of those cells.
Polar interactions and the formation of H-bridge bonds between the polar polymers bring about the PS retention.
Due to their sustainability in comparison to fluorinated binders and their abundance of hydroxylic and carboxylic groups, biopolymers like polysaccharides and polypeptides are frequently utilized as polar binders.
The Global Protein-based cathode Binder market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
Binder-Free V2O5 Cathode for High Energy Density Rechargeable Aluminum-Ion Batteries – Post-lithium-ion batteries, such as aluminum-ion batteries, and the investigation of suitable materials for such batteries are the current focus of research on electrochemical storage systems.
One of the most promising host materials for the intercalation of multivalent ions is vanadium pentoxide (V2O5).
This paper-like V2O5 micrometer-thick, binder-free electrode material that is used as the cathode for rechargeable aluminum-ion batteries is the subject of our report.
In addition, the advanced nanostructured cathode offered a reversible intercalation of Al3+ for more than 500 cycles and a specific discharge capacity of up to 170 mAh g1 with a Coulomb efficiency of nearly 100 percent.
The binder-free idea has an energy density of 74 Wh kg1, which is better than the energy density of the V2O5-based cathodes that have been published so far.
The design and development of novel binder-free and self-supporting electrodes with a high energy density, cycling stability, safety, and low cost for rechargeable multivalent metal-ion batteries can benefit greatly from our findings.
