%0 Journal Article
%A Refino, Andam Deatama
%A Adhitama, Egy
%A Bela, Marlena M.
%A Sadhujan, Sumesh
%A Harilal, Sherina
%A Eldona, Calvin
%A Bremers, Heiko
%A Bashouti, Muhammad Y.
%A Sumboja, Afriyanti
%A Stan, Marian C.
%A Winter, Martin
%A Placke, Tobias
%A Peiner, Erwin
%A Wasisto, Hutomo Suryo
%T Impact of exposing lithium metal to monocrystalline vertical silicon nanowires for lithium-ion microbatteries
%J Communications materials
%V 4
%N 1
%@ 2662-4443
%C London
%I Springer Nature
%M FZJ-2024-02576
%P 58
%D 2023
%Z Zudem unterstützt durch BMBF Projekt: ProLiFest (03XP0253A)
%X Silicon has attracted considerable attention for use as high-capacity anodes of lithium-ion microbatteries. However, its extreme volume change upon (de-)lithiation still poses a challenge for adoption as it leads to severe active lithium loss that shortens the cycle life. Here, we fabricate three-dimensional monocrystalline vertical silicon nanowires on a silicon wafer using low-cost metal-assisted chemical etching, then cover them with lithium using thermal evaporation prior to the battery operation as the pre-lithiation step, to investigate its impact on electrochemical performance. To reveal the underlying physical and electrochemical mechanisms, we also process a comparative planar monocrystalline silicon. We find that pre-lithiation results in improved (de-)lithiation behavior, especially in planar silicon-based cells, while silicon nanowire-based cells exhibit low capacity in early cycles. This study sheds light on the surface design and structural modification of monocrystalline silicon nanowires with respect to pre-lithiation by lithium thermal evaporation.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:001042523700001
%R 10.1038/s43246-023-00385-0
%U https://juser.fz-juelich.de/record/1024926