E-viri
Recenzirano
-
Zhang, Wei; Li, Jianjiang; Guan, Peng; Lv, Chunxiao; Yang, Chao; Han, Na; Wang, Xuechen; Song, Guojun; Peng, Zhi
Journal of alloys and compounds, 09/2020, Letnik: 835Journal Article
Silicon (Si) materials are promising anodes for lithium-ion batteries (LIBs) due to their high theoretical capacity and low discharge potential. Nevertheless, their actual use is seriously restricted by their low conductivity and huge volumetric change. Developing a Si/C composite with a yolk-shell structure is an effective method to overcome the issues including the low electrical conductivity and poor cycling stability caused by Si. In this work, a facile one-pot sol-gel approach is developed to synthesize a Si/C yolk-shell composite in the presence of cost-effective resorcinol-formaldehyde (RF) and tetraethyl orthosilicate (TEOS) as precursors. In this structure, Si nanoparticles (NPs, ∼80–100 nm) are well encapsulated in a ∼12 nm thick hollow carbon shell (HC). There is a 60 nm-thick void space between the silicon core and outer carbon layer. The as-prepared Si@HC sample showed a high charge capacity of 1807.4 mA h g−1 and retained 999.5 mA h g−1 at 100 mA g−1 beyond 100 cycles. Furthermore, this material exhibited a reversible capacity of 500 mA h g−1 after 2000 cycles at 1 A g−1. •The Si@SiO2@RF core-shell precursor can be synthesized by a one-step sol-gel approach.•The size of the thickness of the carbon shell can be adjusted conveniently.•Si@HC anodes exhibit high reversible capacities as well as excellent cycle stability.
Avtor
![loading ... loading ...](themes/default/img/ajax-loading.gif)
Vnos na polico
Trajna povezava
- URL:
Faktor vpliva
Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
---|
Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
---|
Vir: Osebne bibliografije
in: SICRIS
To gradivo vam je dostopno v celotnem besedilu. Če kljub temu želite naročiti gradivo, kliknite gumb Nadaljuj.