基于氮掺杂石墨烯泡沫的 3D 阳极的高性能钠离子电池。
High-performance sodium ion batteries based on a 3D anode from nitrogen-doped graphene foams.
机构信息
Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA; Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW, 2522, Australia.
出版信息
Adv Mater. 2015 Mar 25;27(12):2042-8. doi: 10.1002/adma.201405370. Epub 2015 Feb 16.
A 3D N-doped graphene foam with a 6.8 at% nitrogen content is prepared by annealing a freeze-dried graphene oxide foam in ammonia. It is used as an anode in sodium ion batteries to deliver a high initial reversible capacity of 852.6 mA h g(-1) at 1 C between 0.02 and 3 V with a long-term retention of 69.7% after 150 cycles.
一种氮掺杂三维石墨烯泡沫，其氮含量为 6.8at%，是通过在氨气中退火冻干氧化石墨烯泡沫制备的。它被用作钠离子电池的阳极，在 0.02 至 3 V 的电压范围内以 1 C 的倍率进行测试，初始可逆容量高达 852.6 mA h g(-1)，经过 150 次循环后，容量保持率为 69.7%。
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