An Aqueous Symmetric Sodium-Ion Battery with NASICON-Structured Na3MnTi(PO4)3
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- 作者：Dr. Hongcai Gao and Prof. John B. Goodenough
- 刊名：Angewandte Chemie International Edition
- 出版年：2016
- 出版时间：October 4, 2016
- 年：2016
- 卷：55
- 期：41
- 页码：12768-12772
- 全文大小：1525K
- ISSN：1521-3773
文摘
A symmetric sodium-ion battery with an aqueous electrolyte is demonstrated; it utilizes the NASICON-structured Na3MnTi(PO4)3 as both the anode and the cathode. The NASICON-structured Na3MnTi(PO4)3 possesses two electrochemically active transition metals with the redox couples of Ti4+/Ti3+ and Mn3+/Mn2+ working on the anode and cathode sides, respectively. The symmetric cell based on this bipolar electrode material exhibits a well-defined voltage plateau centered at about 1.4 V in an aqueous electrolyte with a stable cycle performance and superior rate capability. The advent of aqueous symmetric sodium-ion battery with high safety and low cost may provide a solution for large-scale stationary energy storage.