Oriented loading and enduring confinement endow long-life-span Se cathode based on chemical affinity

Peng, Jing; Xu, Changhaoyue; Zhang, Yin; Xie, Haijiao; Zhang, Qianyu; Wu, Hao; Wu, Kaipeng; Wang, Qian; Zhang, Yun

doi:10.1016/j.ensm.2022.08.012

Cited by 2 publications

(2 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thermogravimetric analysis measurement of Se/C hollow microspheres in Ar atmosphere was performed from room temperature to 800°C, as presented in Figure S11. The mass loss at 100°C (0.82%) is caused by the evaporation of moisture adsorbed on the material surface, while the mass loss around 380°C (78.72%) is related to the sublimation of Se 42 . Therefore, the composition of this Se/C hollow microspheres is calculated to be 79.37 wt.% Se and 20.63 wt.% C. Furthermore, particle size distribution of Se/C hollow microspheres was measured and shown in Figure S12.…”

Section: Resultsmentioning

confidence: 99%

“…The mass loss at 100 • C (0.82%) is caused by the evaporation of moisture adsorbed on the material surface, while the mass loss around 380 • C (78.72%) is related to the sublimation of Se. 42 Therefore, the composition of this Se/C hollow microspheres is calculated to be 79.37 wt.% Se and 20.63 wt.% C. Furthermore, particle size distribution of Se/C hollow microspheres was measured and shown in Figure S12. It can be seen that the particle size presents a normal distribution, and the volume within the particle size ranging from 0.675 to 1.65 µm accounts for 80.9% of the total volume.…”

Section: Structural Characterizations Of Electrolytic Productsmentioning

confidence: 99%

See 1 more Smart Citation

An efficient molten‐salt electro‐deoxidation strategy enabling fast‐kinetics and long‐life aluminum–selenium batteries

Tu,

Huang,

Chang

et al. 2024

SusMat

View full text Add to dashboard Cite

Aluminum–selenium (Al–Se) batteries have been considered as one of the most promising energy storage systems owing to their high capacity, energy density, and cost effectiveness, but Se falls challenges in addressing the shuttle effect of soluble intermediate product and sluggish reaction kinetics in the solid–solid conversion process during cycling. Herein, we propose an unprecedented design concept for fabricating uniform Se/C hollow microspheres with controllable morphologies through low‐temperature electro‐deoxidation in neutral NaCl–AlCl3 molten salt system. Such Se/C hollow microspheres are demonstrated to hold a favorable hollow structure for hosting Se, which can not only suppress the dissolution of soluble intermediate products into the electrolyte, thereby maintaining the structural integrity and maximizing Se utilization of the active material, but also promote the electrical/ionic conductivity, thus facilitating the rapid reaction kinetics during cycling. Accordingly, the as‐prepared Se/C hollow microspheres exhibit a high reversible capacity of 720.1 mAh g−1 at 500 mA g−1. Even at the high current density of 1000 mA g−1, Se/C delivers a high discharge capacity of 564.0 mAh g−1, long‐term stability over 1100 cycles and high Coulombic efficiency of 98.6%. This present work provides valuable insights into short‐process recovery of advanced Se‐containing materials and value‐added utilization for energy storage.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Structural Characterizations Of Electrolytic Productsmentioning

confidence: 99%