Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 528, Issue -, Pages 100-108Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2018.05.074
Keywords
NiCo2S4; DNA; Nanosheets; Battery-type material
Categories
Funding
- National Key Research and Development Program of China [2016YFC1400601]
- National Natural Science Foundation of China [21405146, 21275135]
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Nickel-cobalt sulfide (NiCo2S4) nanosheets were successfully fabricated by an environment-friendly hydrothermal method with the assistance of DNA molecules. Different morphological samples were prepared by adjusting the concentrations of DNA. The NiCo(2)S(4)nanosheets derived from 0.2 mu g/mL DNA (denoted as DS2) exhibited a desirable mesoporous feature with superior electrochemical performance compared with other samples. As a battery-type electrode material, it exhibited a high specific capacity of 644C g(-1) at the current density of 1 A/g, superior rate capability of 74.3% retention at 15 A/g and remarkable cycling stability of 90.5% after 1500 cycles. Thus, the electrode material of NiCo2S4 nanosheets assisted by DNA molecule offered great potential in eco-friendly energy storage device applications. (C) 2018 Elsevier Inc. All rights reserved.
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