Silica from diatom frustules as anode material for Li-ion batteries.

ABSTRACT: In spite of its insulating nature, SiO₂ may be utilized as active anode material for Li-ion batteries. Synthetic SiO₂ will typically require sophisticated synthesis and/or activation procedures in order to obtain a satisfactory performance. Here, we report on diatom frustules as active anode material without the need for extensive activation procedures. These are composed primarily of silica, exhibiting sophisticated porous structures. Various means of optimizing the performance were investigated. These included carbon coating, the addition of fluoroethylene carbonate (FEC) and vinylene carbonate (VC) to the carbonate-based electrolyte, as well as activation by an initial potentiostatic hold step. The highest capacity (723 mA h g^-1) was obtained with compos

SUBMITTER: Norberg AN 

PROVIDER: S-EPMC9076370 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature