Topology crafting of polyvinylidene difluoride electrolyte creates ultra-long cycling high-voltage lithium metal solid-state batteries

A highly conductive and stable hybrid solid electrolyte for high voltage lithium metal batteries

“…26 Compared with nonionic conductive polymer electrolytes, single-ion conductive polymers with anions covalently bonded to the polymer backbone have high ionic conductivity because they offer ion transport sites and promote Li salt dissociation, which can provide a continuous Li + transmission path and eliminate interface impedance caused by differences in conductivity between the polymer matrix and ceramic particles. 27 Therefore, incorporating ceramic electrolytes into the single-ion conductive polymer electrolyte might be an effective method to develop new HSEs in solid-state batteries. Herein, a highly conductive HSE consisting of single-ion conductor polymer P(VDF-HFP)-Li 10 as the polymer matrix and LATP as the ceramic component was prepared.…”

A high polarity poly(vinylidene fluoride-co-trifluoroethylene) random copolymer with an all-trans conformation for solid-state LiNi0.8Co0.1Mn0.1O2/lithium metal batteries

“…[7][8][9][10] Among these SPEs, PVDF SPEs have attracted more and more attention recently due to their good mechanical properties, and good electrochemical and thermal stability. [11][12][13] However, on account of the limited ability of the polymer matrix to dissociate lithium salts, pure PVDF SPEs normally show low ionic conductivity at room temperature (#10 À5 S cm À1 ), which seriously restricts their practical applications in LMBs. [11][12][13] To improve the ionic conductivity of PVDF SPEs, the most commonly used methods are decreasing the crystallinity of PVDF by adding inert llers such as Al 2 O 3 , TiO 2 , etc., [14][15][16] or constructing effective ion transport channels by introducing ion-conductive llers such as Li 6.5 La 3 Zr 1.5 Ta 0.5 O 12 , Li 1+x Al x -Ti 2x (PO 4 ) 3 , etc.…”

“…[11][12][13] However, on account of the limited ability of the polymer matrix to dissociate lithium salts, pure PVDF SPEs normally show low ionic conductivity at room temperature (#10 À5 S cm À1 ), which seriously restricts their practical applications in LMBs. [11][12][13] To improve the ionic conductivity of PVDF SPEs, the most commonly used methods are decreasing the crystallinity of PVDF by adding inert llers such as Al 2 O 3 , TiO 2 , etc., [14][15][16] or constructing effective ion transport channels by introducing ion-conductive llers such as Li 6.5 La 3 Zr 1.5 Ta 0.5 O 12 , Li 1+x Al x -Ti 2x (PO 4 ) 3 , etc. 3,12,[17][18][19] Although effective in improving the ionic conductivity, the incorporation of inorganic llers into PVDF SPEs impairs the good exibility and ductility of SPEs more or less, which limits the application of PVDF composite SPEs in exible electronic devices.…”

“…7–10 Among these SPEs, PVDF SPEs have attracted more and more attention recently due to their good mechanical properties, and good electrochemical and thermal stability. 11–13 However, on account of the limited ability of the polymer matrix to dissociate lithium salts, pure PVDF SPEs normally show low ionic conductivity at room temperature (≤10 −5 S cm −1 ), which seriously restricts their practical applications in LMBs. 11–13…”

“…11–13 However, on account of the limited ability of the polymer matrix to dissociate lithium salts, pure PVDF SPEs normally show low ionic conductivity at room temperature (≤10 −5 S cm −1 ), which seriously restricts their practical applications in LMBs. 11–13…”