Details

Autor(en) / Beteiligte

• Dong, Chenlong
• Dong, Wujie
• Zhang, Qinghua
• Huang, Xieyi
• Gu, Lin
• Chen, I.-Wei
• Huang, Fuqiang

Titel

Sulfur-terminated tin oxides for durable, highly reversible storage of large-capacity lithium

Ist Teil von

• Journal of materials chemistry. A, Materials for energy and sustainability, 2020, Vol.8 (2), p.626-631

Ort / Verlag

Cambridge: Royal Society of Chemistry

Erscheinungsjahr

2020

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Convertible reactant anodes such as SnO 2 , GeO 2 , In 2 O 3 , and ZnO offer unusually large capacity for lithium ion batteries (LIBs) but all suffer from a huge volume expansion which triggers internal fracture and reconfiguration. Herein, sulfur-termination as a shifting paradigm to relieve volume expansion is proposed. The sulfur-termination strategy is expected to set each metal nanocrystal into a conducting container during the reduction process and plenty of containers are physically separated from each other but are electrically wired to the current collector. To put the strategy into practice, sulfur-terminated tin oxide (SnO 2− x -S) nanocrystals as reactants are demonstrated to resist coarsening and reconfiguration throughout cycling. Such LIB anodes with the addition of a conductive supporter provide 1010 mA h g −1 at 2 A g −1 after 800 cycles, breaking new ground on multiple fronts for this promising anode class. Sulfur-terminated tin oxides could resist the volume expansion significantly and thus offer highly reversible lithium storage.