Negating Na‖Na₃Zr₂Si₂PO₁₂ interfacial resistance for dendrite-free and “Na-less” solid-state batteries

Abstract

Solid electrolytes hold promise in safely enabling the high-energy metallic sodium (Na) anodes. However, the poor Na||solid electrolyte interfacial contact can induce Na dendrite growth and limit Na utilization, plaguing...

Rechargeable Solid‐State Na‐Metal Battery Operating at −20 °C

“…Moreover, the performance of the solid-state NVAP-PCE|0.15Ca-NZSP|Na battery surpasses those of most NZSPbased solid-state batteries documented in previous literature (Table S1, Supporting Information). [20,24,27,[29][30][31][32][45][46][47]50,62] The robust wide-temperature performance of the NVAP-PCE|0.15Ca-NZSP|Na battery can be credited to the steady Na-metal plating/stripping behavior at the anodic interface and the excellent low-temperature properties of the NVAP cathode material. [61]…”

“…[22] Among these methods, chemical surface modification has proven effective in improving the interfacial performance at the Na-metal/SE interface. [23][24][25][26] For instance, Miao et al [23] achieved homogeneous Na-metal plating/stripping cycles lasting 5000 h at 25 °C under a high current density of 0.3 mA cm −2 by introducing a CuO-coating layer as an active interphase to accommodate the Na/NZSP interface. Conversely, precise control over in situ interphase formation has demonstrated unique advantages in tuning interfacial chemistry to overcome limitations.…”

An in Situ Formed Multifunctional Interphase with High Dendrite Tolerance for Long-Life Solid-State Sodium–Metal Batteries

“…Even at a considerably high current density of 0.5 mA/cm 2 , a 400-h cyclability was achieved at 55 °C (Figure S7). Figure f summarizes the electrochemical performances (CCD and cycle life) of various representative NZSP-based Na symmetric cells in the literature. ,− Unarguably, our Na||SnCl 4 @NZSP||Na cells with a high CCD of 0.8 mA/cm 2 and a 1000-h cycle life at 0.3 mA/cm 2 certainly marked one of the best performance combinations ever reported at room temperature.…”

The glass phase in the grain boundary of Na3Zr2Si2PO12, created by gallium modulation

“…1 Simultaneously, solid-state batteries assembled with solid electrolytes have become a hot topic because they can effectively inhibit the occurrence of re and explosions. [2][3][4][5] Therefore, designing proper solid-state sodium electrolytes (SSSEs) and understanding their working mechanism are key to improving the performance of solid-state sodium batteries (SSSBs). Among the reported SSSEs, NASICON (Na Super Ionic CONductor) family, which were rst reported by Hong and Goodenough in 1976, 6,7 show high ionic conductivity, good chemical and thermal stability.…”

“…[6][7][8][9] It is claimed that Na 1+x Zr 2 Si x P 3−x O 12 achieves the highest total conductivity when x = 2. 7,8,[10][11][12][13] The NASICON structure consists of octahedral ZrO 6 and tetrahedral PO 4 3− /SiO 4 4− , sharing a corner oxygen and demonstrating a 3D ion transport channel, which provides efficient conduction pathways for Na ions. The substitution of the Zr 4+ site can effectively adjust the lattice parameters and hence the ion conductivity of Na 3 Zr 2 Si 2 PO 12 , such as Ca 2+ , 14 Sc 3+ , 15 Ge 4+ (ref.…”