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

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posted on 2024-11-16, 05:21 authored by Binwei Zhang, Tian Sheng, Yunxiao WangYunxiao Wang, Shulei Chou, Kenneth Davey, Shi DouShi Dou, Shizhang Qiao
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.

Funding

Room-temperature sodium-sulphur batteries

Australian Research Council

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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.

Journal title

Angewandte Chemie - International Edition

Volume

58

Issue

5

Pagination

1484-1488

Language

English

RIS ID

132632

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