A simple cost-effective wet synthesis route has been proposed for synthesis of Na2Ti6O13, which is an efficient anode material that can be used for 1–3 volt batteries. The material has been synthesized by sonochemical route, which offers two distinct features: (1) energy-savvy (green) synthesis by significantly lowering the final calcination temperature and duration, and (2) formation of uniform and nano-scale particles suitable for battery application. The sonochemical synthesis was carried out at 20 kHz–500 W by applying sonication for 30 min at 25°C, using precursors (NaOH:TiO2) in a molar ratio of 6:1 followed by calcination at 750°C for 1 h in air. This material showed excellent reversible electrochemical performance (up to 93% retention) and offers reversible capacity around 40 mAh g−1 acting to be 0.82 V anode for Na-ion battery.

中文翻译：

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声化学合成的 Na2Ti6O13 纳米棒：一种高效的钠离子电池电极材料

已经提出了一种简单且经济高效的湿法合成路线来合成 Na2Ti6O13，这是一种可用于 1-3 伏电池的高效负极材料。该材料是通过声化学途径合成的，具有两个明显的特点：（1）节能（绿色）合成，通过显着降低最终煅烧温度和持续时间，以及（2）形成适用于电池的均匀纳米级颗粒应用。声化学合成在 20 kHz–500 W 下进行，通过在 25°C 下进行 30 分钟的超声处理，使用摩尔比为 6:1 的前体（NaOH:TiO2），然后在 750°C 下在空气中煅烧 1 小时. 该材料显示出优异的可逆电化学性能（高达 93% 的保留率）并提供约 40 mAh g-1 的可逆容量，用作钠离子电池的 0.82 V 阳极。