Journal
ELECTROCHIMICA ACTA
Volume 260, Issue -, Pages 755-761Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2017.12.031
Keywords
Sodium ion battery; FeS2@carbon nanorods; Tunable pseudocapacitance
Categories
Funding
- National Nature Science Foundations of China [51671140, 51301117]
- International Cooperation Project Foundation of Shanxi Province China [201603D421037, 2015081053]
- Higher School Science and Technology Innovation Project Foundation of Shanxi Province, China [2016128, 201701D22107]
- Shanxi Scholarship Council of China [2015-034]
- Natural Science Foundation of Shanxi Province of China [201701D221077]
- Australian Research Council [DP160102627, LP160100273]
- Australian Research Council [LP160100273] Funding Source: Australian Research Council
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Sodium ion batteries (SIBs) are a promising replacement for the widely prevalent Li-ion batteries (LIBs) as an efficient energy storage technology. Development of electrode materials with high energy density and high power density is the key to achieving high performance SIBs. Here, we demonstrate a high-capacity and high-rate SIB cathode which is made of one-dimensional FeS2 nanorods, where an extrinsic pseudocapacitance contribution is found and verified by cyclic voltammetry. The carbon coated FeS2 nanorods exhibit ultra-long lifespan (9000 cycles), high reversible capacity (506.9 mAh g(-1) at 500 mA g(-1)), and outstanding rate capability (140 mAh g(-1) at 20 A g(-1)). (C) 2017 Elsevier Ltd. All rights reserved.
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