We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
FeSe clusters with excellent cyclability and rate capability for sodium-ion batteries.
- Authors
Wei, Xiujuan; Tang, Chunjuan; An, Qinyou; Yan, Mengyu; Wang, Xuanpeng; Hu, Ping; Cai, Xinyin; Mai, Liqiang
- Abstract
Sodium-ion batteries (SIBs) have great promise for sustainable and economical energy-storage applications. Nevertheless, it is a major challenge to develop anode materials with high capacity, high rate capability, and excellent cycling stability for them. In this study, FeSe clusters consisting of nanorods were synthesized by a facile hydrothermal method, and their sodium-storage properties were investigated with different electrolytes. The FeSe clusters delivered high electrochemical performance with an ether-based electrolyte in a voltage range of 0.5-2.9 V. A high discharge capacity of 515 mAh·g was obtained after 400 cycles at 1 A·g, with a high initial columbic efficiency of 97.4%. Even at an ultrahigh rate of 35 A·g, a specific capacity of 128 mAh·g was achieved. Using calculations, we revealed that the pseudocapacitance significantly contributed to the sodium-ion storage, especially at high current rates, leading to a high rate capability. The high comprehensive performance of the FeSe clusters makes them a promising anode material for SIBs.
- Publication
Nano Research, 2017, Vol 10, Issue 9, p3202
- ISSN
1998-0124
- Publication type
Article
- DOI
10.1007/s12274-017-1537-z