Balance cathode-active and anode-active groups in one conjugated polymer towards high-performance all-organic lithium-ion batteries

Conjugated Ladder-Type Polymer with Hexaazatriphenylene Units as a Cathode Material for Lithium, Sodium, and Potassium Batteries

“…Upon subsequent depotassiation, the pattern of CLP-HAT reappeared. Similar evolution of Raman spectra was previously reported for other organic materials with redox-active CN/CC bonds . The experimental results were in accordance with theoretical Raman spectra for a model oligomer that shares similar structural features with CLP-HAT (Figures S6 and S7).…”

“…Similar evolution of Raman spectra was previously reported for other organic materials with redox-active CN/ CC bonds. 30 The experimental results were in accordance with theoretical Raman spectra for a model oligomer that shares similar structural features with CLP-HAT (Figures S6 and S7). Relative intensity of the bands at ∼1250−1350 cm −1 increased for the simulated Raman spectrum of the potassiated structure (Figure S8).…”

A quinoxalinophenazinedione covalent triazine framework for boosted high-performance aqueous zinc-ion batteries

“…aqueous ZnSO 4 used here), resulting in unstable coulombic efficiency in AZIBs. 53,54 More importantly, excellent cycling stability is observed with a high capacity retention of ∼94% (92.4 mA h g −1 ) after 250 cycles (Fig. 2d).…”

Molecular structure design of planar zwitterionic polymer electrode materials for all-organic symmetric batteries

“…15,19,20 It is usually beneficial to simplify the fabrication process and reduce manufacturing costs to construct all-organic symmetric batteries using the same material as electrodes. 21–23 The chemical structures of electrode materials significantly affect the electrochemical performance of all-organic symmetric batteries. The molecular design for electrode materials of all-organic symmetric batteries needs to rationally balance the working voltage, specific capacity, and cycling stability of both the cathode and anode.…”

“…The molecular design for electrode materials of all-organic symmetric batteries needs to rationally balance the working voltage, specific capacity, and cycling stability of both the cathode and anode. 22,24 First, reversible redox reactions of electrode materials are supposed to take place at both higher voltage platforms (>2 V) and lower voltage platforms (<1 V) for all-organic symmetric batteries. The organic electrode materials containing cathode-active groups (CO, CN, etc. )…”