期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 910, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2022.164762
关键词
Battery; Sodium metal; Dendrite; Nickel foam; Sodiophilic
资金
- National Natural Science Foundation of China [51772257, 52072328]
- Major Basic Research Project of Shandong Natural Science Foundation [ZR2018ZC1459]
- Science Fund of Shandong Laboratory of Advanced Materials and Green Manufacturing (Yantai) [AMGM2021F11]
This study utilizes a 3D porous nickel foam matrix decorated with Fe2O3 nanosheets as a sodiophilic scaffold, demonstrating smaller hysteresis voltage and satisfactory cycling stability at high current density, offering new possibilities for the anode design of sodium metal batteries.
Sodium metal is a promising alternative anode for high-energy Na-based batteries due to its natural abundance, favorable redox voltage and remarkable theoretical capacity. However, unstable solid electrolyte interface (SEI) film, huge volume variation and uncontrolled Na dendrite growth, resulting in low Coulombic efficiency and limited span-life, have dragged the Na metal anode out of practical application. Herein, 3D hierarchical porous nickel foam matrix decorated by Fe2O3 nanosheets (Fe2O3 @Ni) is synthesized and served as a sodiophilic scaffold to reduce Na nucleation overpotential and achieve uniform Na deposition without dendrite growth. Consequently, the composite Na/Fe2O3 @Ni anode shows smaller hysteresis voltage at a high current density of 5 mA cm-2 and exhibits satisfactory cycling stability with a Coulombic efficiency of ~ 99.77% (up to 1000 cycles). When in couple with Na3V2(PO4)3 cathode, the full cell shows higher capacity and better cycling stability than the one with bare Na anode. The 3D porous nickel modified by Fe2O3 presents a new perspective for the anode design of sodium metal battery. (c) 2022 Published by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据