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- W2933257952 abstract "Abstract Although silicon is a promising anode material for lithium-ion batteries, scalable synthesis of silicon anodes with good cyclability and low electrode swelling remains a significant challenge. Herein, we report a scalable top-down technique to produce ant-nest-like porous silicon from magnesium-silicon alloy. The ant-nest-like porous silicon comprising three-dimensional interconnected silicon nanoligaments and bicontinuous nanopores can prevent pulverization and accommodate volume expansion during cycling resulting in negligible particle-level outward expansion. The carbon-coated porous silicon anode delivers a high capacity of 1,271 mAh g −1 at 2,100 mA g −1 with 90% capacity retention after 1,000 cycles and has a low electrode swelling of 17.8% at a high areal capacity of 5.1 mAh cm −2 . The full cell with the prelithiated silicon anode and Li(Ni 1/3 Co 1/3 Mn 1/3 )O 2 cathode boasts a high energy density of 502 Wh Kg −1 and 84% capacity retention after 400 cycles. This work provides insights into the rational design of alloy anodes for high-energy batteries." @default.
- W2933257952 created "2019-04-11" @default.
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- W2933257952 date "2019-03-29" @default.
- W2933257952 modified "2023-10-06" @default.
- W2933257952 title "Scalable synthesis of ant-nest-like bulk porous silicon for high-performance lithium-ion battery anodes" @default.
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- W2933257952 doi "https://doi.org/10.1038/s41467-019-09510-5" @default.
- W2933257952 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6441089" @default.
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