A Layered Organic Cathode for High-Energy, Fast-Charging, and Long-Lasting Li-Ion Batteries

A Layered Organic Cathode for High-Energy, Fast-Charging, and Long-Lasting Li-Ion Batteries

2024 | Tianyang Chen, Harish Banda, Jiande Wang, Julius J. Oppenheim, Alessandro Franceschi, and Mircea Dincă
This study presents a layered organic cathode material, bis-tetraaminobenzoquinone (TAQ), which outperforms traditional inorganic cathodes in terms of energy density, fast charging, and long cycling life. TAQ is derived from earth-abundant elements and exhibits high electrical conductivity, high storage capacity, and complete insolubility, enabling reversible intercalation of Li⁺ ions. The material achieves a cathode capacity of 306 mAh g⁻¹, an energy density of 765 Wh kg⁻¹, and can charge-discharge in as little as 6 minutes. TAQ's unique structure, featuring strong intermolecular hydrogen bonding and donor-acceptor π-π interactions, provides high bulk electrical conductivity and enables efficient Li⁺ diffusion. TAQ electrodes with up to 90 wt% active material show excellent performance, with a reversible capacity of 275 mAh g⁻¹ and a capacity retention of 88% after 100 cycles. When combined with additives like carboxymethyl cellulose (CMC) and styrene butadiene rubber (SBR), TAQ electrodes achieve even higher performance, with a capacity of 324 mAh g⁻¹ and a high areal capacity of 3.52 mAh cm⁻². TAQ-based batteries demonstrate superior performance compared to conventional cathodes, including higher energy density, faster charging, and longer cycling life. The material's high crystallinity, low solubility, and efficient redox behavior make it a promising candidate for sustainable, high-performance lithium-ion batteries.This study presents a layered organic cathode material, bis-tetraaminobenzoquinone (TAQ), which outperforms traditional inorganic cathodes in terms of energy density, fast charging, and long cycling life. TAQ is derived from earth-abundant elements and exhibits high electrical conductivity, high storage capacity, and complete insolubility, enabling reversible intercalation of Li⁺ ions. The material achieves a cathode capacity of 306 mAh g⁻¹, an energy density of 765 Wh kg⁻¹, and can charge-discharge in as little as 6 minutes. TAQ's unique structure, featuring strong intermolecular hydrogen bonding and donor-acceptor π-π interactions, provides high bulk electrical conductivity and enables efficient Li⁺ diffusion. TAQ electrodes with up to 90 wt% active material show excellent performance, with a reversible capacity of 275 mAh g⁻¹ and a capacity retention of 88% after 100 cycles. When combined with additives like carboxymethyl cellulose (CMC) and styrene butadiene rubber (SBR), TAQ electrodes achieve even higher performance, with a capacity of 324 mAh g⁻¹ and a high areal capacity of 3.52 mAh cm⁻². TAQ-based batteries demonstrate superior performance compared to conventional cathodes, including higher energy density, faster charging, and longer cycling life. The material's high crystallinity, low solubility, and efficient redox behavior make it a promising candidate for sustainable, high-performance lithium-ion batteries.
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Understanding A Layered Organic Cathode for High-Energy%2C Fast-Charging%2C and Long-Lasting Li-Ion Batteries