Garnet/polymer solid electrolytes for high-performance solid-state lithium metal batteries: The role of amorphous Li2O2

Highly stable LiTa2PO8-based hybrid solid electrolytes via the in situ interfacial formation technique for solid-state lithium-metal batteries

“…44 Upon the successive addition of LiTFSI, SN, and different amounts of LTPO filler, the intensities of the polymer peaks in the PVDF–HFP + LiTFSI + SN (SPE) spectrum decreased and x LTPO-HSE patterns almost disappeared, indicating that the degree of crystallinity of the polymer is significantly decreased. 7 The amorphous nature of the polymer matrix typically enhances the movement of its polymer chain segments as well as the mobility of Li + ions, both of which have a critical role in improving the ionic conductivity of HSEs. 45…”

“…Promising candidates for this purpose include perovskite Li 3 x La 2/3− x TiO 3 (0.03 ≤ x ≤ 0.29), NASICON-type Li 1+x Al x Ti 2− x (PO 4 ) 3 (0 ≤ x ≤ 0.7), 5 and garnet Li 7 La 3 Zr 2 O 12 . 7–9 Among numerous SSE candidates, recent studies have reported a novel solid-state lithium ion-conducting electrolyte material called LiTa 2 PO 8 (LTPO) that exhibits low grain boundary resistance and high bulk ionic conductivity. 10–12 LTPO has a monoclinic crystal structure and belongs to the C 2/ c space group.…”

PEO‐Based Solid Composite Polymer Electrolyte for High Capacity Retention All‐Solid‐State Lithium Metal Battery

“…The solid‐state method was employed to synthesized cubic Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) powder. [ 53 ] To elaborate, precise amounts of high‐quality LiOH, La 2 O 3 , ZrO 2 , and Ta 2 O 5 , along with an additional excess amount of LiOH (15 wt.%) were used to compensate for lithium loss during high‐temperature calcination. These precursor materials were then dispersed in an isopropanol medium and ball‐milled for 36 h. The resulting mixture was subjected to drying at 60 °C for 12 h to remove the solvent, followed by calcination at 950 °C for a duration of 3 h. The end product was pulverized into a fine powder and subsequently sifted through 200‐mesh sieves.…”

“…[47][48][49] Another strategy involves utilizing surface modification techniques like plasma treatment or chemical functionalization to improve the chemical compatibility between LLZTO and the electrode materials. [50][51][52][53] Enhancing the functionality of LLZTO garnet fillers through surface modification has been recognized as a promising approach. Nevertheless, despite these endeavors, the interfacial resistance between SPEs and Li metal anodes is yet to be fully mitigated.…”

Constructing Enhanced Composite Solid-State Electrolytes with Sb/Nb Co-Doped LLZO and PVDF-HFP

“…ISEs include oxides [9,10], sulfides [11,12], nitrides [13], and hydrides [14]. Oxide electrolytes show good commercial value because of their high ionic conductivity, wide electrochemical window, high strength, and good thermal stability [15,16]. Among them, the common oxide solid electrolytes are lithium superionic conductors (LISICON), sodium superionic conductors (NASICON), perovskite Li 3x La 2/3−x TiO 3 (LLTO), and garnet Li 7 La 3 Zr 2 O 12 (LLZO) [17].…”