Salt-washing Improvement of the Electrochemical Properties of Zeolite-sulfur Cathode for Lithium-sulfur Batteries
Yanjia He , Zibo Du , Yong Su , Junxi Yu , Feifan Chen , Shuhong Xie , Jun’an Pan
Journal of Wuhan University of Technology Materials Science Edition ›› 2020, Vol. 35 ›› Issue (4) : 665 -670.
Salt-washing Improvement of the Electrochemical Properties of Zeolite-sulfur Cathode for Lithium-sulfur Batteries
We displayed that the low-cost natural zeolite with molecular sieve structure can be used as the carrier of sulfur in lithium-sulfur batteries. Meanwhile, a simple salt-washing method was implemented on zeolite for dredging the internal microchannel to improve the ability of adsorption, ion exchange and sulfur loading. The experimental results show that the first specific discharge capacities of zeolite/S and salt-washed zeolite/S cathode under 0.2 C current density are 950.7 and 1 116.8 mAh/g, respectively, and corresponding discharge capacities remain at 350.6 and 604.2 mAh/g after 300 cycles. The first specific discharge capacity of salt-washed zeolite/S composite is 17.5% higher than that sample without salt-washing, and the corresponding ionic conductivity is improved.
zeolite / salt-washing / internal microchannel / lithium-sulfur battery
| [1] |
|
| [2] |
|
| [3] |
|
| [4] |
|
| [5] |
Li Z, Zou Y, Duan J, et al. Coral-like Cop Hollow Composites as Effective Host Cathodes for Lithium-sulfur Batteries[J]. Ionics, 2019: 1–11 |
| [6] |
|
| [7] |
Li Z, Zou Y, Duan J, et al. Long-cycle Stability for Li-S Batteries by Carbon Nanofibers/Reduced Graphene Oxide as Host Cathode Material[J]. Ionics, 2019: 1–10 |
| [8] |
|
| [9] |
|
| [10] |
|
| [11] |
|
| [12] |
|
| [13] |
Baerlocher C, Mccusker LB, Olson DH. Atlas of Zeolite Framework Types[M]. Elsevier, 2007 |
| [14] |
|
| [15] |
|
| [16] |
|
| [17] |
|
| [18] |
|
| [19] |
|
| [20] |
|
| [21] |
|
| [22] |
|
| [23] |
|
| [24] |
|
| [25] |
|
| [26] |
Sukharenko VI, Usenko SI, Borisova LI, et al. Studying the Composition and Properties of Zeolitecontaining Rocks of Tatarshatrashane Occurrence[M]. Book of Abstracts, 2006: 226 |
| [27] |
|
| [28] |
|
| [29] |
|
| [30] |
|
| [31] |
Wei Y, Yan Y, Zou Y, et al. The Ternary PANI@ BDC/S Composite Cathode with Enhanced Electrochemical Performance in Lithium-sulfur Batteries[J]. Journal of Electroanalytical Chemistry, 2019 |
| [32] |
Lasia A. Electrochemical Impedance Spectroscopy and Its Applications[M]. Modern Aspects of Electrochemistry, 2002: 143–248 |
| [33] |
|
| [34] |
|
/
| 〈 |
|
〉 |