An Aqueous Symmetric Sodium-Ion Battery with NASICON-Structured Na3MnTi(PO4)3

被引:312
作者
Gao, Hongcai [1 ]
Goodenough, John B. [1 ]
机构
[1] Univ Texas Austin, Texas Mat Inst, Austin, TX 78712 USA
关键词
aqueous electrolyte; energy storage; sodium-ion battery; symmetric battery; ENERGY-STORAGE; INTERCALATION CHEMISTRY; RECHARGEABLE BATTERY; ELECTRODE MATERIAL; CATHODE MATERIALS; LOW-COST; NA3V2(PO4)(3); NA; NATI2(PO4)(3); CARBON;
D O I
10.1002/anie.201606508
中图分类号
O6 [化学];
学科分类号
070301 [无机化学];
摘要
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 1.4V 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.
引用
收藏
页码:12768 / 12772
页数:5
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