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In situ formed carbon bonded and encapsulated selenium composites for Li-Se and Na-Se batteries

Journal Article


Abstract


  • As high capacity cathodes for Li-ion and Na-ion batteries, carbon bonded and encapsulated selenium composites (C/Se) with a high loading content of 54% Se were synthesized by the in situ carbonization of a mixture of perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) and selenium (Se) in a sealed vacuum glass tube. Because Se is physically encapsulated and chemically bonded by carbon, the shuttle reaction of polyselenide is effectively mitigated. The in situ formed C/Se composites exhibit superior cycling stability for both Li-ion and Na-ion batteries in carbonate-based electrolytes. The reversible capacity of the in situ formed C/Se composites is maintained at 430 mA h g-1 after 250 cycles in Li-ion batteries and 280 mA h g-1 after 50 cycles in Na-ion batteries at a current density of 100 mA g-1. This journal is

Publication Date


  • 2015

Citation


  • Luo, C., Wang, J., Suo, L., Mao, J., Fan, X., & Wang, C. (2015). In situ formed carbon bonded and encapsulated selenium composites for Li-Se and Na-Se batteries. Journal of Materials Chemistry A, 3(2), 555-561. doi:10.1039/c4ta04611k

Scopus Eid


  • 2-s2.0-84916613661

Start Page


  • 555

End Page


  • 561

Volume


  • 3

Issue


  • 2

Place Of Publication


Abstract


  • As high capacity cathodes for Li-ion and Na-ion batteries, carbon bonded and encapsulated selenium composites (C/Se) with a high loading content of 54% Se were synthesized by the in situ carbonization of a mixture of perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) and selenium (Se) in a sealed vacuum glass tube. Because Se is physically encapsulated and chemically bonded by carbon, the shuttle reaction of polyselenide is effectively mitigated. The in situ formed C/Se composites exhibit superior cycling stability for both Li-ion and Na-ion batteries in carbonate-based electrolytes. The reversible capacity of the in situ formed C/Se composites is maintained at 430 mA h g-1 after 250 cycles in Li-ion batteries and 280 mA h g-1 after 50 cycles in Na-ion batteries at a current density of 100 mA g-1. This journal is

Publication Date


  • 2015

Citation


  • Luo, C., Wang, J., Suo, L., Mao, J., Fan, X., & Wang, C. (2015). In situ formed carbon bonded and encapsulated selenium composites for Li-Se and Na-Se batteries. Journal of Materials Chemistry A, 3(2), 555-561. doi:10.1039/c4ta04611k

Scopus Eid


  • 2-s2.0-84916613661

Start Page


  • 555

End Page


  • 561

Volume


  • 3

Issue


  • 2

Place Of Publication