An Ultralong Lifespan and Low‐Temperature Workable Sodium‐Ion Full Battery for Stationary Energy Storage,Advanced Energy Materials

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An Ultralong Lifespan and Low‐Temperature Workable Sodium‐Ion Full Battery for Stationary Energy Storage
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2018-03-12 , DOI: 10.1002/aenm.201703252
Ying-Ying Wang ₁ , Bao-Hua Hou ₁ , Jin-Zhi Guo ₁ , Qiu-Li Ning ₁ , Wei-Lin Pang ₁ , Jiawei Wang ₂ , Chang-Li Lü ₁ , Xing-Long Wu ₁

Affiliation

Presently, commercialization of sodium‐ion batteries (SIBs) is still hindered by the relatively poor energy‐storage performance. In addition, low‐temperature (low‐T) Na storage is another principal concern for the wide application of SIBs. Unfortunately, the Na‐transfer kinetics is extremely sluggish at low‐T, as a result, there are few reports on low‐T SIBs. Here, an advanced low‐T sodium‐ion full battery (SIFB) assembled by an anode of 3D Se/graphene composite and a high‐voltage cathode (Na₃V₂(PO₄)₂O₂F) is developed, exhibiting ultralong lifespan (over even 15 000 cycles, the capacity retention is still up to 86.3% at 1 A g⁻¹), outstanding low‐T energy storage performance (e.g., all values of capacity retention are >75% after 1000 cycles at temperatures from 25 to −25 °C at 0.4 A g⁻¹), and high‐energy/power properties. Such ultralong lifespan signifies that the developed sodium‐ion full battery can be used for longer than 60 years, if batteries charge/discharge once a day and 80% capacity retention is the standard of battery life. As a result, the present study not only promotes the practicability and commercialization of SIBs but also points out the new developing directions of next‐generation energy storage for wider range applications.

中文翻译：

超长寿命和低温可正常使用的钠离子全电池，用于固定式能量存储

目前，相对较差的储能性能仍然阻碍了钠离子电池（SIB）的商业化。此外，低温（低T）Na储存是SIB广泛应用的另一个主要问题。不幸的是，低T下的Na转移动力学非常缓慢，因此，关于低T SIB的报道很少。在这里，开发了一种由3D Se /石墨烯复合材料的阳极和高压阴极（Na ₃ V ₂（PO ₄）₂ O ₂ F）组装而成的先进的低T钠离子全电池（SIFB），具有超长的使用寿命寿命（即使在15,000次循环中，在1 A g ^-1时容量保持率仍高达86.3％），出色的低T储能性能（例如，在25至-25°C的温度下于0.4 A g ^-1的温度下1000次循环后，所有容量保持率值均> 75％），并且具有高能量/功率特性。如此超长的使用寿命表明，如果电池每天充电/放电一次，并且容量保持率达到80％，则开发的钠离子全电池可以使用60年以上。结果，本研究不仅促进了SIB的实用性和商业化，而且指出了下一代储能在更广泛应用中的新发展方向。

更新日期：2018-03-12

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