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Solvothermal‐Derived S‐Doped Graphene as an Anode Material for Sodium‐Ion Batteries
Advanced Science ( IF 14.3 ) Pub Date : 2018-02-14 , DOI: 10.1002/advs.201700880 Bo Quan 1 , Aihua Jin 2 , Seung-Ho Yu 3 , Seok Mun Kang 2 , Juwon Jeong 2 , Héctor D Abruña 3 , Longyi Jin 1 , Yuanzhe Piao 4 , Yung-Eun Sung 2
Advanced Science ( IF 14.3 ) Pub Date : 2018-02-14 , DOI: 10.1002/advs.201700880 Bo Quan 1 , Aihua Jin 2 , Seung-Ho Yu 3 , Seok Mun Kang 2 , Juwon Jeong 2 , Héctor D Abruña 3 , Longyi Jin 1 , Yuanzhe Piao 4 , Yung-Eun Sung 2
Affiliation
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Sodium‐ion batteries (SIBs) have attracted enormous attention in recent years due to the high abundance and low cost of sodium. However, in contrast to lithium‐ion batteries, conventional graphite is unsuitable for SIB anodes because it is much more difficult to intercolate the larger Na ions into graphite layers. Therefore, it is critical to develop new anode materials for SIBs for practical use. Here, heteroatom‐doped graphene with high doping levels and disordered structures is prepared using a simple and economical thermal process. The solvothermal‐derived graphene shows excellent performance as an anode material for SIBs. It exhibits a high reversible capacity of 380 mAh g−1 after 300 cycles at 100 mA g−1, excellent rate performance 217 mAh g−1 at 3200 mA g−1, and superior cycling performance at 2.0 A g−1 during 1000 cycles with negligible capacity fade.
中文翻译：
溶剂热衍生的 S 掺杂石墨烯作为钠离子电池负极材料
近年来，钠离子电池（SIB）由于钠的丰度高且成本低廉而引起了极大的关注。然而，与锂离子电池相比，传统石墨不适合用作 SIB 阳极，因为将较大的 Na 离子嵌入到石墨层中要困难得多。因此，开发用于实际应用的新型SIB负极材料至关重要。在这里，使用简单且经济的热工艺制备了具有高掺杂水平和无序结构的杂原子掺杂石墨烯。溶剂热衍生石墨烯作为 SIB 阳极材料表现出优异的性能。它在100 mA g -1下循环300次后表现出380 mAh g -1的高可逆容量，在3200 mA g -1 下表现出优异的倍率性能217 mAh g -1 ，以及在2.0 A g -1下1000次循环期间优异的循环性能容量衰减可以忽略不计。
更新日期：2018-02-14
中文翻译：
溶剂热衍生的 S 掺杂石墨烯作为钠离子电池负极材料
近年来，钠离子电池（SIB）由于钠的丰度高且成本低廉而引起了极大的关注。然而，与锂离子电池相比，传统石墨不适合用作 SIB 阳极，因为将较大的 Na 离子嵌入到石墨层中要困难得多。因此，开发用于实际应用的新型SIB负极材料至关重要。在这里，使用简单且经济的热工艺制备了具有高掺杂水平和无序结构的杂原子掺杂石墨烯。溶剂热衍生石墨烯作为 SIB 阳极材料表现出优异的性能。它在100 mA g -1下循环300次后表现出380 mAh g -1的高可逆容量，在3200 mA g -1 下表现出优异的倍率性能217 mAh g -1 ，以及在2.0 A g -1下1000次循环期间优异的循环性能容量衰减可以忽略不计。
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