High performance LATP thin film electrolytes for all-solid-state microbattery applications

Abstract

The NASICON superionic solid electrolyte 〖Li〗_(1+x) 〖Al〗_x 〖Ti〗_(2-x) (PO_4 )_3 (LATP) with 0.3 ≤ x ≤ 0.5 remains as one of the most promising solid electrolytes thanks to its good...

Recent Advances in Conduction Mechanisms, Synthesis Methods, and Improvement Strategies for Li1+xAlxTi2−x(PO4)3 Solid Electrolyte for All‐Solid‐State Lithium Batteries

“…In addition to the relatively common methods discussed above, recently some new ways to prepare LATP, such as spray drying, [130,131] the template method, [132] direct ink writing (DIW), [133] and large-area pulsed laser deposition (PLD), [134] have emerged. For example, Liu et al successfully synthesized LATP using the DIW method (Figure 9a).…”

“…[133] Siller et al used PLD to synthesize LATP nanoparticles deposited uniformly in the ground state, enhancing the density of LATP (Figure 9b,c). [134] Conventional sintering of SSE often requires several hours, which may cause severe volatility of Li and further impede its application in large-scale production of SSBs. [91,[135][136][137][138] Therefore, innovative sintering techniques with much-reduced sintering time, such as microwave-assisted sintering, [128] SPS, [123] flash sintering, [139] cold sintering, [135,140] field-assisted sintering technology (FAST), [141] ultrafast high-temperature sintering (UHS), [88] and others have been investigated.…”

Miniaturized lithium-ion batteries for on-chip energy storage

“…14d). 128 Inorganic glass electrolytes have certain structural advantages over crystalline electrolytes. For example, with highly defective structures, inorganic glassy electrolytes have ample empty spaces for Li + to occupy, which are benecial for ion migration.…”

Phase Evolution and Li Diffusion in LATP Solid‐State Electrolyte Synthesized via a Direct Heat‐Cycling Method

“…The diffusion of lithium in SSEs ultimately dominates their performance in an electrochemical cell, thus its study is crucial to SSE and SSB materials development. [ 22 ] Many techniques are available to study diffusion within battery materials such as LATP, including electrochemical techniques, [ 23 ] solid‐state nuclear magnetic resonance (NMR), [ 24 ] and computational methods. [ 25 ] Each of these have their own associated experimental caveats: electrochemical impedance spectroscopy (EIS), galvanostatic intermittent titration techniques (GITTs), and cyclic voltammetry (CV) are bulk electrochemical techniques sensitive to the experiment geometry, cell chemistry, and materials’ micro‐/mesostructure; solid‐state NMR spectroscopy is limited by magnetic elements in the sample; computational atomistic methods focus on idealized structures.…”