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| Home > Publications database > Promoting the Transformation of Li 2 S 2 to Li 2 S: Significantly Increasing Utilization of Active Materials for High‐Sulfur‐Loading Li–S Batteries > print |
| Home > Publications database > Promoting the Transformation of Li 2 S 2 to Li 2 S: Significantly Increasing Utilization of Active Materials for High‐Sulfur‐Loading Li–S Batteries > print |
| 001 | 867205 | ||
| 005 | 20240711085628.0 | ||
| 024 | 7 | _ | |a 10.1002/adma.201901220 |2 doi |
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| 100 | 1 | _ | |a Yang, Xiaofei |0 P:(DE-HGF)0 |b 0 |
| 245 | _ | _ | |a Promoting the Transformation of Li 2 S 2 to Li 2 S: Significantly Increasing Utilization of Active Materials for High‐Sulfur‐Loading Li–S Batteries |
| 260 | _ | _ | |a Weinheim |c 2019 |b Wiley-VCH |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 520 | _ | _ | |a Lithium–sulfur (Li–S) batteries with high sulfur loading are urgently required in order to take advantage of their high theoretical energy density. Ether‐based Li–S batteries involve sophisticated multistep solid–liquid–solid–solid electrochemical reaction mechanisms. Recently, studies on Li–S batteries have widely focused on the initial solid (sulfur)–liquid (soluble polysulfide)–solid (Li2S2) conversion reactions, which contribute to the first 50% of the theoretical capacity of the Li–S batteries. Nonetheless, the sluggish kinetics of the solid–solid conversion from solid‐state intermediate product Li2S2 to the final discharge product Li2S (corresponding to the last 50% of the theoretical capacity) leads to the premature end of discharge, resulting in low discharge capacity output and low sulfur utilization. To tackle the aforementioned issue, a catalyst of amorphous cobalt sulfide (CoS3) is proposed to decrease the dissociation energy of Li2S2 and propel the electrochemical transformation of Li2S2 to Li2S. The CoS3 catalyst plays a critical role in improving the sulfur utilization, especially in high‐loading sulfur cathodes (3–10 mg cm−2). Accordingly, the Li2S/Li2S2 ratio in the discharge products increased to 5.60/1 from 1/1.63 with CoS3 catalyst, resulting in a sulfur utilization increase of 20% (335 mAh g−1) compared to the counterpart sulfur electrode without CoS3. |
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| 700 | 1 | _ | |a Li, Ruying |0 P:(DE-HGF)0 |b 16 |
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| 700 | 1 | _ | |a Sham, Tsun‐Kong |0 P:(DE-HGF)0 |b 19 |
| 700 | 1 | _ | |a Sun, Xueliang |0 P:(DE-HGF)0 |b 20 |e Corresponding author |
| 773 | _ | _ | |a 10.1002/adma.201901220 |g Vol. 31, no. 25, p. 1901220 - |0 PERI:(DE-600)1474949-x |n 25 |p 1901220 - |t Advanced materials |v 31 |y 2019 |x 1521-4095 |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/867205/files/Yang_et_al-2019-Advanced_Materials.pdf |y Restricted |
| 856 | 4 | _ | |y Published on 2019-05-07. Available in OpenAccess from 2020-05-07. |u https://juser.fz-juelich.de/record/867205/files/LiS-2.pdf |
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