Durable sodium iodide interphase stabilizing sodium metal anodes
Abstrak
Abstract The implementation of sodium metal batteries (SMBs) is known for their low cost and high energy density. However, a major concern in SMBs is the formation of dendrites on the Na metal anode, which can potentially cause short circuits and compromise safety. Herein, to address this issue, we propose a novel approach to create a protective layer by decorating Na surface with NaI particles. This protective layer exhibits a high Young’s modulus and excellent sodium ion transference ability. As a result, the lifespan of the Na/NaI||Na/NaI cell is significantly extended to 850 h at 0.5 mA cm−2/1 mAh cm−2. Furthermore, when the Na/NaI anode is combined with a Na3V2(PO4)3 (NVP) cathode, the full cell retains 83 mAh g−1 (approximately 94% of its initial capacity) even after 1500 cycles at 5 C. Overall, this work presents a simple and effective method for establishing a protective layer on the Na surface, thereby enabling the realization of long lifespan and stable SMBs.
Topik & Kata Kunci
Penulis (9)
Kaizhi Chen
Hongyang Huang
Shitan Xu
Zishun Yuan
Yang Yang
Yu Yao
Xianghua Zhang
Xianhong Rui
Yan Yu
Akses Cepat
- Tahun Terbit
- 2024
- Sumber Database
- DOAJ
- DOI
- 10.1007/s43979-024-00082-y
- Akses
- Open Access ✓