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A 3D conductive network of porous carbon nanoparticles interconnected with carbon nanotubes as the sulfur host for long cycle life lithium-sulfur batteries.
Nanoscale. 2018 Dec 21; 10(47):22601-22611.N

Abstract

Constructing an interlinked three-dimensional conductive carbon structure as a sulfur host is considered to be an effective strategy for suppressing the capacity decay over long-term cycling and improving the rate performance of lithium-sulfur (Li-S) batteries, because it can not only facilitate rapid electronic and ionic transportation in the cathode, but also be conducive to confine lithium polysulfide (LiPS) dissolution and shuttling. In this report, we designed a novel 3D conductive network structure (CNTs/Co-NC), which is composed of Co-NC (cobalt embedded in an N-doped porous carbon composite) derived from ZIF-67 polyhedra and inserted carbon nanotubes (CNTs), and applied it as a sulfur host for Li-S batteries. The CNT/Co-NC network structure is firstly prepared via the in situ nucleation of small ZIF-67 crystals on the surface of CNTs and eventually grown into CNT/ZIF-67 hybrid materials; after subsequent carbonization and infiltration of sulfur procedures, the S@CNT/Co-NC cathode is obtained. Li-S batteries based on the S@CNT/Co-NC cathode show an improved rate capability of 772.6 mA h g-1 at the 2 C rate, enhanced long cycling stability under a large current density with a low capacity decay rate of ∼0.067% per cycle at the 0.5 C rate after 500 cycles and ∼0.072% per cycle at the 1 C rate after 700 cycles and an excellent coulombic efficiency of about 95% up to 500 cycles at 0.5 C and 91% up to 700 cycles at 1 C. The superior performance of S@CNTs/Co-NC should be ascribed to the rapid charge transfer, excellent electron conductivity, improved adsorption capability for LiPSs and enhanced redox kinetics of this 3D conductive network structure.

Authors+Show Affiliations

College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, Hunan, China. zhengchunman@nudt.edu.cn xiew014@mail.ustc.edu.cn.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30480697

Citation

Luo, Shiqiang, et al. "A 3D Conductive Network of Porous Carbon Nanoparticles Interconnected With Carbon Nanotubes as the Sulfur Host for Long Cycle Life Lithium-sulfur Batteries." Nanoscale, vol. 10, no. 47, 2018, pp. 22601-22611.
Luo S, Sun W, Ke J, et al. A 3D conductive network of porous carbon nanoparticles interconnected with carbon nanotubes as the sulfur host for long cycle life lithium-sulfur batteries. Nanoscale. 2018;10(47):22601-22611.
Luo, S., Sun, W., Ke, J., Wang, Y., Liu, S., Hong, X., Li, Y., Chen, Y., Xie, W., & Zheng, C. (2018). A 3D conductive network of porous carbon nanoparticles interconnected with carbon nanotubes as the sulfur host for long cycle life lithium-sulfur batteries. Nanoscale, 10(47), 22601-22611. https://doi.org/10.1039/c8nr06109b
Luo S, et al. A 3D Conductive Network of Porous Carbon Nanoparticles Interconnected With Carbon Nanotubes as the Sulfur Host for Long Cycle Life Lithium-sulfur Batteries. Nanoscale. 2018 Dec 21;10(47):22601-22611. PubMed PMID: 30480697.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A 3D conductive network of porous carbon nanoparticles interconnected with carbon nanotubes as the sulfur host for long cycle life lithium-sulfur batteries. AU - Luo,Shiqiang, AU - Sun,Weiwei, AU - Ke,Jianhuang, AU - Wang,Yiqi, AU - Liu,Shuangke, AU - Hong,Xiaobin, AU - Li,Yujie, AU - Chen,Yufang, AU - Xie,Wei, AU - Zheng,Chunman, Y1 - 2018/11/27/ PY - 2018/11/28/pubmed PY - 2018/11/28/medline PY - 2018/11/28/entrez SP - 22601 EP - 22611 JF - Nanoscale JO - Nanoscale VL - 10 IS - 47 N2 - Constructing an interlinked three-dimensional conductive carbon structure as a sulfur host is considered to be an effective strategy for suppressing the capacity decay over long-term cycling and improving the rate performance of lithium-sulfur (Li-S) batteries, because it can not only facilitate rapid electronic and ionic transportation in the cathode, but also be conducive to confine lithium polysulfide (LiPS) dissolution and shuttling. In this report, we designed a novel 3D conductive network structure (CNTs/Co-NC), which is composed of Co-NC (cobalt embedded in an N-doped porous carbon composite) derived from ZIF-67 polyhedra and inserted carbon nanotubes (CNTs), and applied it as a sulfur host for Li-S batteries. The CNT/Co-NC network structure is firstly prepared via the in situ nucleation of small ZIF-67 crystals on the surface of CNTs and eventually grown into CNT/ZIF-67 hybrid materials; after subsequent carbonization and infiltration of sulfur procedures, the S@CNT/Co-NC cathode is obtained. Li-S batteries based on the S@CNT/Co-NC cathode show an improved rate capability of 772.6 mA h g-1 at the 2 C rate, enhanced long cycling stability under a large current density with a low capacity decay rate of ∼0.067% per cycle at the 0.5 C rate after 500 cycles and ∼0.072% per cycle at the 1 C rate after 700 cycles and an excellent coulombic efficiency of about 95% up to 500 cycles at 0.5 C and 91% up to 700 cycles at 1 C. The superior performance of S@CNTs/Co-NC should be ascribed to the rapid charge transfer, excellent electron conductivity, improved adsorption capability for LiPSs and enhanced redox kinetics of this 3D conductive network structure. SN - 2040-3372 UR - https://www.unboundmedicine.com/medline/citation/30480697/A_3D_conductive_network_of_porous_carbon_nanoparticles_interconnected_with_carbon_nanotubes_as_the_sulfur_host_for_long_cycle_life_lithium_sulfur_batteries_ L2 - https://doi.org/10.1039/c8nr06109b DB - PRIME DP - Unbound Medicine ER -
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