Trimethyl phosphite as an electrolyte additive for high-voltage lithium-ion batteries using lithium-rich layered oxide cathode

Fluoroethylene Carbonate as Electrolyte Additive for Improving the electrochemical performances of High-Capacity Li1.16[Mn0.75Ni0.25]0.84O2 Material

“…The heat generated from the thermal decomposition reaction between the delithiated cathode and the electrolyte, is reduced by nearly 70% in presence of FEC. It implies that FEC enhances the thermal stability of the lithium rich cathode material [17,53]. In the case, FEC acts as a film-formation additive to build a more stable interphase between Li 1.16 [Mn 0.75 Ni 0.25 ] 0.84 O 2 cathode and electrolyte, which protects the highly oxidative cathode particles from direct contact with the electrolyte solution and reduces the exothermic reaction.…”

“…Xiang et al [17] reported that 1% trimethyl phosphite (TMP) enhanced capacity retention and rate capability of lithium-rich cathode Li 1.2 Mn 0.54-Ni 0.13 Co 0.13 O 2 , since the catalyzing effect of some dissolved transition metal ions on the surface was effectively deactivated by forming the passivating interphase. Kang et al [18] proposed 1,3,5-trihydroxybenzene (THB) as an additive to form a protective film on the cathode, and graphite/Li 1.10 Mn 0.…”

“…Choi et al [23] confirmed that the LiBOB-derived SEI film effectively prevented the undesirable decomposition of the electrolyte on the surface of Li 1. 17 Ni 0.17 Mn 0.5 Co 0.17 O 2 cathodes in half and full cells with graphite anodes.…”

CeF 3 -modified LiNi 1/3 Co 1/3 Mn 1/3 O 2 cathode material for high-voltage Li-ion batteries

“…Various strategies have been introduced to solve the aforementioned issues of LiNi 1/3 Co 1/3 Mn 1/3 O 2 cathode materials, such as introduction of functional additives into electrolytes [12], cation doping [13,14] and surface coating for the cathode materials [10,[15][16][17]. Recently coating with inert metal oxides (such as Al 2 O 3 , ZnO, TiO 2 and LiAlO 2 ) is an effective strategy [18][19][20], because the coating layers hinder the direct contact so as to suppress the side reactions between the electrode and organic electrolytes.…”

Modified electrochemical performance of high potential cathode using a sand-like carbonate electrolyte

“…In general, the modification on material [8,9] and electrolyte [10][11][12][13] is effective to enhance the cycling stability of the cathode. Lithium metasilicate (Li 2 SiO 3 ) is an alkaline inorganic lithium salt.…”