Abstract An amorphous V2O5 (a-V2O5) cathode for aqueous zinc ion battery was prepared via the solution method followed by low temperature annealing. The cathode shows better performance than crystal V2O5 (c-V2O5), including a high specific discharge capacity (348 mAh g−1 at 0.1 A g−1) and great long term cycle stability of 2200 cycles at 5 A g−1. The excellent performances are attributed to the high structural disorder which provides a great deal of insertion sites for Zn2+. In addition, the a-V2O5 can be massively produced based on the simple solution method which shows great potential in practical application.

中文翻译：

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无定形V2O5作为水性锌离子电池的高性能正极

摘要 采用溶液法低温退火制备了无定形V2O5(a-V2O5)水系锌离子电池正极。阴极表现出比晶体 V2O5 (c-V2O5) 更好的性能，包括高比放电容量（0.1 A g-1 时为 348 mAh g-1）和 5 A g-1 时 2200 次循环的良好长期循环稳定性。优异的性能归因于高度的结构无序，它为 Zn2+ 提供了大量的插入位点。此外，a-V2O5 可以通过简单的溶解方法大量生产，在实际应用中显示出巨大的潜力。