An aqueous electrolyte, sodium ion functional, large format energy storage device for stationary applications

作者：Whitacre J F^*; Wiley T; Shanbhag S; Wenzhuo Y; Mohamed A; Chun S E; Weber E; Blackwood D; Lynch Bell E; Gulakowski J; Smith C; Humphreys D

来源：Journal of Power Sources, 2012, 213: 255-264.

DOI：10.1016/j.jpowsour.2012.04.018

• Sodium-ion battery
• Aqueous electrolyte hybrid device
• Asymmetric energy storage device
• Stationary energy storage
• Lead acid battery
• Renewable energy storage

An approach to making large format economical energy storage devices based on a sodium-interactive set of electrodes in a neutral pH aqueous electrolyte is described. The economics of materials and manufacturing are examined, followed by a description of an asymmetric/hybrid device that has lambda-MnO2 positive electrode material and low cost activated carbon as the negative electrode material. Data presented include materials characterization of the active materials, cyclic voltammetry, galvanostatic charge/discharge cycling, and application-specific performance of an 80 V, 2.4 kW h pack. The results indicate that this set of electrochemical couples is stable, low cost, requires minimal battery management control electronics, and therefore has potential for use in stationary applications where device energy density is not a concern.

• 出版日期2012-9-1