DNA-assisted synthesis of nickel cobalt sulfide nanosheets as high-performance battery-type electrode materials

Hanmeng Liu; Yilin Wang; Zhen Li; Zhixia Yao; Jing Lin; Yujing Sun; Zhuang Li

doi:10.1016/j.jcis.2018.05.074

DNA-assisted synthesis of nickel cobalt sulfide nanosheets as high-performance battery-type electrode materials

J Colloid Interface Sci. 2018 Oct 15:528:100-108. doi: 10.1016/j.jcis.2018.05.074. Epub 2018 May 22.

Authors

Hanmeng Liu¹, Yilin Wang², Zhen Li², Zhixia Yao², Jing Lin³, Yujing Sun⁴, Zhuang Li⁵

Affiliations

¹ State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China; University of Science and Technology of China, Hefei, Anhui 230026, PR China.
² State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
³ State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China; College of Chemistry, Jilin Normal University, Siping, Jilin 136000, PR China.
⁴ State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China. Electronic address: yjsun@ciac.ac.cn.
⁵ State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, PR China. Electronic address: zli@ciac.ac.cn.

PMID: 29843057
DOI: 10.1016/j.jcis.2018.05.074

Abstract

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 NiCo₂S₄ nanosheets derived from 0.2 μg/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.

Keywords: Battery-type material; DNA; Nanosheets; NiCo(2)S(4).