fig12

Figure 12. The effect of additives beyond FEC and VC. (A) TEM images of Na_0.76Ni_0.3Fe_0.4Mn_0.3O₂ particles after working in batteries with electrolytes containing various concentrations of ADN (0%, 1%, 3%, 5%). Reproduced from ref^[135], copyright 2018 Elsevier; (B) The high-resolution C 1s, O 1s, F 1s, and S 2p XPS spectra of NMCT-La electrodes cycled in base electrolytes with and without 2% 1,3-PS additive after the first cycle. Reproduced from ref^[59], Copyright 2022 Elsevier; (C) The cyclic performance of Na/NLNMC cell cycled at a high temperature of 45 °C. Reproduced from ref^[99], copyright 2021 Wiley; (D) The molecule structure of DETMSA and the reactions with HF and with H₂O by breaking the Si-N bond. Reproduced from ref^[141], copyright 2022 Springer Science + Business Media; (E) Digital photographs of flammability tests for EC-DEC-FEC electrolytes and the concentrated HT12 and HT12-F electrolytes. Reproduced from ref^[142], copyright 2022 Elsevier. DEC: Diethyl carbonate; DETMSA: N, N-diethyltrimethylsilylamine; EC: ethylene carbonate; FEC: fluoroethylene carbonate; SA: succinic anhydride; TEM: transmission electron microscopy; VC: vinylene carbonate; XPS: X-ray photoelectron spectroscopy; 1,3-PS: 1,3-propylene sulfite.