TY  - JOUR
AU  - Refino, Andam Deatama
AU  - Adhitama, Egy
AU  - Bela, Marlena M.
AU  - Sadhujan, Sumesh
AU  - Harilal, Sherina
AU  - Eldona, Calvin
AU  - Bremers, Heiko
AU  - Bashouti, Muhammad Y.
AU  - Sumboja, Afriyanti
AU  - Stan, Marian C.
AU  - Winter, Martin
AU  - Placke, Tobias
AU  - Peiner, Erwin
AU  - Wasisto, Hutomo Suryo
TI  - Impact of exposing lithium metal to monocrystalline vertical silicon nanowires for lithium-ion microbatteries
JO  - Communications materials
VL  - 4
IS  - 1
SN  - 2662-4443
CY  - London
PB  - Springer Nature
M1  - FZJ-2024-02576
SP  - 58
PY  - 2023
N1  - Zudem unterstützt durch BMBF Projekt: ProLiFest (03XP0253A)
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001042523700001
DO  - DOI:10.1038/s43246-023-00385-0
UR  - https://juser.fz-juelich.de/record/1024926
ER  -