Long Cycle Life and High‐Rate Sodium Metal Batteries Enabled by Regulating 3D Frameworks with Artificial Solid‐State Interphases
X Lai, Z Xu, X Yang, Q Ke, Q Xu… - Advanced Energy …, 2022 - Wiley Online Library
The major challenge for sodium metal anodes is Na dendrite growth owing to the unstable
and fragile solid–electrolyte interphase (SEI), leading to terrible cycle life and safety
hazards. Constructing a robust SEI around a 3D porous host is considered to be a facile and
efficient approach to stabilize Na metal anodes. Here, a durable 3D porous SnCl4@ Na–
rGO metal anode is fabricated by the in situ chemical reaction of SnCl4‐containing
carbonate electrolyte with Na–rGO. Attributed to the robust SEI and the stereoscopic …
and fragile solid–electrolyte interphase (SEI), leading to terrible cycle life and safety
hazards. Constructing a robust SEI around a 3D porous host is considered to be a facile and
efficient approach to stabilize Na metal anodes. Here, a durable 3D porous SnCl4@ Na–
rGO metal anode is fabricated by the in situ chemical reaction of SnCl4‐containing
carbonate electrolyte with Na–rGO. Attributed to the robust SEI and the stereoscopic …
Long Cycle Life and High‐Rate Sodium Metal Batteries Enabled by an Active/Inactive Co‐Sn alloy Interface
Sodium‐metal batteries (SMBs) are considered as a promising route to realize a high
energy density battery, showing potential for applications in large‐scale energy storage.
However, the cycling stability and reversibility of the Na‐metal anode suffer from significant
challenges because of the growth of Na dendrites. This study reports an active/inactive Co‐
Sn alloy interface to suppress the growth of Na dendrites under harsh test conditions. In this
interface, Sn provides abundant nucleation sites and Co plays a synergistic role in …
energy density battery, showing potential for applications in large‐scale energy storage.
However, the cycling stability and reversibility of the Na‐metal anode suffer from significant
challenges because of the growth of Na dendrites. This study reports an active/inactive Co‐
Sn alloy interface to suppress the growth of Na dendrites under harsh test conditions. In this
interface, Sn provides abundant nucleation sites and Co plays a synergistic role in …