High‐Performance Sodium Ion Batteries Based on a 3D Anode from Nitrogen‐Doped Graphene Foams
High‐Performance Sodium Ion Batteries Based on a 3D Anode from Nitrogen‐Doped Graphene Foams
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DOI：
10.1002/adma.201405370
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发表时间：
2015-03
影响因子：
29.4
通讯作者：
Jiantie Xu;Min Wang;Nilantha P. Wickramaratne;M. Jaroniec;Shixue Dou;L. Dai
中科院分区：
文献类型：
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作者：
Jiantie Xu;Min Wang;Nilantha P. Wickramaratne;M. Jaroniec;Shixue Dou;L. Dai
通过在氨中退火冷冻干燥的氧化石墨烯泡沫来制备具有6.8原子%氮含量的3D N掺杂石墨烯泡沫。它被用作钠离子电池的阳极，在0.02和3 V之间的1 C下提供852.6 mA h g（-1）的高初始可逆容量，150次循环后的长期保持率为69.7%。
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.