Enabling room temperature sodium metal batteries
Enabling room temperature sodium metal batteries
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DOI：
10.1016/j.nanoen.2016.09.013
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发表时间：
2016-12-01
期刊：
影响因子：
17.6
通讯作者：
Zhang, Ji-Guang
中科院分区：
文献类型：
--
作者：
Cao, Ruiguo;Mishra, Kuber;Zhang, Ji-Guang
基于钠(Na+)离子的可充电电池是锂离子电池以外的许多新电池化学的核心。与使用碳或合金基阳极相比，直接利用固体金属钠作为阳极将是非常有利的，但由于其高反应性，其使用一直存在很大问题。在这项工作中，通过调整电解液配方，固体金属钠可以在常温下以高效率(>；99%)在铜和廉价的铝集电体上被电镀/剥离，从而使人们能够将焦点转移到基于常温下运行的金属钠的新型电池化学偶。这些高浓度的电解液使使用Na金属负极和Na_3V_2(PO_4)(3)负极的Na金属电池具有极高的效率和高倍率的循环稳定性。(C)2016爱思唯尔有限公司。保留所有权利。
Rechargeable batteries based upon sodium (Na+) cations are at the core of many new battery chemistries beyond Li-ion batteries. Rather than using carbon or alloy-based anodes, the direct utilization of solid sodium metal as an anode would be highly advantageous, but its use has been highly problematic due to its high reactivity. In this work, it is demonstrated that, by tailoring the electrolyte formulation, solid Na metal can be electrochemically plated/stripped at ambient temperature with high efficiency (> 99%) on both copper and inexpensive aluminum current collectors thereby enabling a shift in focus to new battery chemical couples based upon Na metal operating at ambient temperature. These highly concentrated electrolytes have enabled excellent cycling stability of Na metal batteries using Na metal anode and Na3V2(PO4)(3) cathode at high rates with very high efficiency. (C) 2016 Elsevier Ltd. All rights reserved.