Abstract
Sodium-on batteries (SIBs) are promising alternatives to lithium-ion batteries (LIBs) because of the low cost, abundance, and high sustainability of sodium resources. Analogous to LIBs, the high-capacity electrodes in SIBs always suffer from rapid capacity decay upon long-term cycling due to the particle pulverization induced by a large volume change. Circumventing particle pulverization plays a critical role in developing high-energy and long-life SIBs. Herein, tetrahydroxy-1,4-benzoquinone disodium salt (TBDS) that can self-heal the cracks by hydrogen bonding between hydroxyl group and carbonyl group is employed as a cathode for sustainable and stable SIBs. The self-healing TBDS exhibits long cycle life of 1000 cycles with a high rate capability up to 2 A g−1 due to the fast Na-ion diffusion reaction in the TBDS cathode. The intermolecular hydrogen bonding has been comprehensively characterized to understand the self-healing mechanism. The hydrogen bonding-enabled self-healing organic materials are promising for developing high-energy and long-cycle-life SIBs.
Original language | English |
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Article number | 2300211 |
Journal | Small Structures |
Volume | 4 |
Issue number | 12 |
DOIs | |
State | Published - Dec 2023 |
Keywords
- cathodes
- hydrogen bonding
- self-healing chemistry
- sodium-ion batteries
- tetrahydroxy-1,4-benzoquinone disodium salt