Towards High‐Performance Aqueous Sodium Ion Batteries: Constructing Hollow NaTi2(PO4)3@C Nanocube Anode with Zn Metal‐Induced Pre‐Sodiation and Deep Eutectic Electrolyte. Issue 14 (7th March 2022)

• Record Type: Journal Article
• Authors: Hou, Zhiguo; Zhang, Xueqian; Chen, Jingwei; Qian, Yitai; Chen, Li‐Feng; Lee, Pooi See
• Is Part Of: Advanced energy materials. Volume 12:Issue 14(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-03-07
• Subjects: deep eutectic electrolytes -- hollow NaTi 2(PO 4) 3 nanocubes -- sodium ion batteries -- stationary energy storage -- Zn metal‐induced pre‐sodiation; Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.202104053
• Languages: English
• ISSNs: 1614-6832

Abstract

Abstract: The aqueous rechargeable sodium‐ion battery (ARSIB) is considered to be the most promising candidate for large‐scale energy storage applications, due to its low cost, safety, and eco‐friendliness. However, the poor cycle life and low energy density of ARSIB impede its practical applications. In this context, hollow NaTi2 (PO4 )3 nanocubes anode is engineered through a facile, low‐cost, and large‐scale hydrothermal approach. Na0.44 MnO2 cathode delivers a high capacity of 75.16 mAh g −1 with the compensation of sodium ions by the zinc metal‐induced pre‐sodiation of the anode in a deep eutectic electrolyte. The well‐designed structure in hollow carbon‐coated NaTi2 (PO4 )3 nanocubes enables high stability and rate performance. Moreover, the adoption of deep eutectic electrolytes can minimize the Mn dissolution in the Na0.44 MnO2 cathode. When coupling the cathode and anode, the as‐assembled ARSIB with a deep eutectic electrolyte exhibits an ultralong cycle life up to 3500 cycles (with capacity retention of 90%), an ultrahigh energy density of 50.0 Wh kg −1, and superior rate capability (maximum power density of 1500 W kg −1 ). This ARSIB represents an alternative promising candidate for large‐scale electrochemical energy storage. Abstract : A low‐cost and high‐energy aqueous rechargeable sodium‐ion battery (ARSIB) is developed using an as‐prepared Zn‐induced pre‐sodiation hollow NaTi2 (PO4 )3 anode and Na0.44 MnO2 cathode in a deep eutectic electrolyte, in which the hollow nanocube structure of NaTi2 (PO4 )3 guarantees a good rate capability and the Zn‐induced "pre‐sodiation" in the anode secures the full utilization of an NMO cathode in ARSIBs for the first time.