Skip to main content
placeholder image

Long-Life Room-Temperature Sodium–Sulfur Batteries by Virtue of Transition-Metal-Nanocluster–Sulfur Interactions

Journal Article


Download full-text (Open Access)

Abstract


  • Room‐temperature sodium–sulfur (RT‐Na/S) batteries hold significant promise for large‐scale application because of low cost of both sodium and sulfur. However, the dissolution of polysulfides into the electrolyte limits practical application. Now, the design and testing of a new class of sulfur hosts as transition‐metal (Fe, Cu, and Ni) nanoclusters (ca. 1.2 nm) wreathed on hollow carbon nanospheres (S@M‐HC) for RT‐Na/S batteries is reported. A chemical couple between the metal nanoclusters and sulfur is hypothesized to assist in immobilization of sulfur and to enhance conductivity and activity. S@Fe‐HC exhibited an unprecedented reversible capacity of 394 mAh g−1 despite 1000 cycles at 100 mA g−1, together with a rate capability of 220 mAh g−1 at a high current density of 5 A g−1. DFT calculations underscore that these metal nanoclusters serve as electrocatalysts to rapidly reduce Na2S4 into short‐chain sulfides and thereby obviate the shuttle effect.

Publication Date


  • 2019

Citation


  • Zhang, B., Sheng, T., Wang, Y., Chou, S., Davey, K., Dou, S. & Qiao, S. (2019). Long-Life Room-Temperature Sodium–Sulfur Batteries by Virtue of Transition-Metal-Nanocluster–Sulfur Interactions. Angewandte Chemie - International Edition, 58 (5), 1484-1488.

Scopus Eid


  • 2-s2.0-85059463082

Ro Full-text Url


  • https://ro.uow.edu.au/cgi/viewcontent.cgi?article=4484&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3430

Has Global Citation Frequency


Number Of Pages


  • 4

Start Page


  • 1484

End Page


  • 1488

Volume


  • 58

Issue


  • 5

Place Of Publication


  • Germany

Abstract


  • Room‐temperature sodium–sulfur (RT‐Na/S) batteries hold significant promise for large‐scale application because of low cost of both sodium and sulfur. However, the dissolution of polysulfides into the electrolyte limits practical application. Now, the design and testing of a new class of sulfur hosts as transition‐metal (Fe, Cu, and Ni) nanoclusters (ca. 1.2 nm) wreathed on hollow carbon nanospheres (S@M‐HC) for RT‐Na/S batteries is reported. A chemical couple between the metal nanoclusters and sulfur is hypothesized to assist in immobilization of sulfur and to enhance conductivity and activity. S@Fe‐HC exhibited an unprecedented reversible capacity of 394 mAh g−1 despite 1000 cycles at 100 mA g−1, together with a rate capability of 220 mAh g−1 at a high current density of 5 A g−1. DFT calculations underscore that these metal nanoclusters serve as electrocatalysts to rapidly reduce Na2S4 into short‐chain sulfides and thereby obviate the shuttle effect.

Publication Date


  • 2019

Citation


  • Zhang, B., Sheng, T., Wang, Y., Chou, S., Davey, K., Dou, S. & Qiao, S. (2019). Long-Life Room-Temperature Sodium–Sulfur Batteries by Virtue of Transition-Metal-Nanocluster–Sulfur Interactions. Angewandte Chemie - International Edition, 58 (5), 1484-1488.

Scopus Eid


  • 2-s2.0-85059463082

Ro Full-text Url


  • https://ro.uow.edu.au/cgi/viewcontent.cgi?article=4484&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3430

Has Global Citation Frequency


Number Of Pages


  • 4

Start Page


  • 1484

End Page


  • 1488

Volume


  • 58

Issue


  • 5

Place Of Publication


  • Germany