Negating Na‖NaZrSiPO interfacial resistance for dendrite-free and "Na-less" solid-state batteries.

Chem Sci

School of Chemistry and Chemical Engineering, School of Materials Science and Engineering, Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University Hefei 230601 P. R. China

Published: December 2022

Solid electrolytes hold promise in safely enabling high-energy metallic sodium (Na) anodes. However, the poor Na‖solid electrolyte interfacial contact can induce Na dendrite growth and limit Na utilization, plaguing the rate performance and energy density of current solid-state Na-metal batteries (SSSMBs). Herein, a simple and scalable Pb/C interlayer strategy is introduced to regulate the surface chemistry and improve Na wettability of NaZrSiPO (NZSP) solid electrolyte. The resulting NZSP exhibits a perfect Na wettability (0° contact angle) at a record-low temperature of 120 °C, a negligible room-temperature Na‖NZSP interfacial resistance of 1.5 Ω cm, along with an ultralong cycle life of over 1800 h under 0.5 mA cm/0.5 mA h cm symmetric cell cycling at 55 °C. Furthermore, we unprecedentedly demonstrate fabrication of weight-controlled Na anodes and explore the effect of the negative/positive capacity (N/P) ratio on the cyclability of SSSMBs. Both solid-state NaV(PO) and S full cells show superior electrochemical performance at an optimal N/P ratio of 40.0. The Pb/C interlayer modification demonstrates dual functions of stabilizing the anode interface and improving Na utilization, making it a general strategy for implementing Na metal anodes in practical SSSMBs.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9728568PMC
http://dx.doi.org/10.1039/d2sc05120fDOI Listing

Publication Analysis

Top Keywords

interfacial resistance
8
pb/c interlayer
8
n/p ratio
8
negating na‖nazrsipo
4
na‖nazrsipo interfacial
4
resistance dendrite-free
4
dendrite-free "na-less"
4
"na-less" solid-state
4
solid-state batteries
4
batteries solid
4

Similar Publications

Non-volatile electronic memory elements are very attractive for applications, not only for information storage but also in logic circuits, sensing devices and neuromorphic computing. Here, a ferroelectric film of guanine nucleobase is used in a resistive memory junction sandwiched between two different ferromagnetic films of Co and CoCr alloys. The magnetic films have an in-plane easy axis of magnetization and different coercive fields whereas the guanine film ensures a very long spin transport length, at 100 K.

View Article and Find Full Text PDF

A styrene-glycidylmethacrylate-1-allyl-3-vinylimidazole epoxy functionalized ionomer (EFI) was synthesized, and the EFI and carbon nanotubes (CNTs) were co-introduced into poly(lactide)/poly(butylene-adipate-co-terephtalate) (PLA/PBAT) blends to fabricate high performance composites with excellent mechanical properties, fatigue-resistance and dielectric properties. It is revealed that EFI can improve the interaction force between PLA and PBAT by inducing the interfacial crosslink reaction, thereby improving the melt strength of the samples. EFI can also refine the dispersion of CNT in the composites owing to the non-covalent force between EFI and CNT, promote the formation of filler network inside composites, which is demonstrated by DMA and rheological test results.

View Article and Find Full Text PDF
Article Synopsis
  • Solid-state polymer electrolytes (SPEs) are gaining attention for sodium metal batteries (SMBs) due to their flexibility and lower interfacial resistance, but they struggle with sodium ion conductivity and unstable interfaces.
  • A novel composite electrolyte called PPNM is created by integrating a 3D copper metal organic framework (Cu-MOF) with polyacrylonitrile (PAN) fibers and polyethylene oxide (PEO), enhancing ionic conductivity and sodium ion movement.
  • The improved stability and performance of the PPNM electrolyte lead to strong cycling results for Na3V2(PO4)3@C/PPNM/Na full cells, making it a promising strategy for advancing solid-state SMB technology.
View Article and Find Full Text PDF

Enhancing Tribo-Rehydration in Hydrogel by Brush-Like Surface and Its Modulation.

ACS Appl Mater Interfaces

January 2025

State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.

Synovial exudation, creeping, and lubrication failure in natural cartilage under a long-term normal loading can be counteracted by a tribo-rehydration (sliding-induced rehydration) phenomenon. Hydrogels, as porous materials, can also restore interfacial lubrication and overcome creep through this strategy. At appropriate sliding velocities, water molecules at the interface contact inlet are driven by hydrodynamic pressures into the porous network to resist creep extrusion.

View Article and Find Full Text PDF

Sulfate Promotes Compact CaCO Formation and Protects Portland Cement from Supercritical CO Attack.

Environ Sci Technol

January 2025

Department of Energy, Environmental & Chemical Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States.

Supercritical (sc) CO in geologic carbon sequestration (GCS) can chemically and mechanically deteriorate wellbore cement, raising concerns for long-term operations. In contrast to the conventional view of "sulfate attack" on cement, we found that adding 0.15 M sulfate to the acidic brine can significantly reduce the impact of scCO attack on Portland cement, resulting in stronger cement than that found in a sulfate-free system.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!