High capacity silicon anodes enabled by MXene viscous aqueous ink

Nature Communications
Chuanfang John ZhangValeria Nicolosi

Abstract

The ever-increasing demands for advanced lithium-ion batteries have greatly stimulated the quest for robust electrodes with a high areal capacity. Producing thick electrodes from a high-performance active material would maximize this parameter. However, above a critical thickness, solution-processed films typically encounter electrical/mechanical problems, limiting the achievable areal capacity and rate performance as a result. Herein, we show that two-dimensional titanium carbide or carbonitride nanosheets, known as MXenes, can be used as a conductive binder for silicon electrodes produced by a simple and scalable slurry-casting technique without the need of any other additives. The nanosheets form a continuous metallic network, enable fast charge transport and provide good mechanical reinforcement for the thick electrode (up to 450 µm). Consequently, very high areal capacity anodes (up to 23.3 mAh cm-2) have been demonstrated.

References

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Citations

Mar 21, 2020·Advanced Materials·Sina AbdolhosseinzadehChuanfang John Zhang
Apr 3, 2020·Advanced Materials·Yi-Zhou ZhangHusam N Alshareef
Jun 3, 2020·Advanced Materials·Hüseyin Enis KarahanTae-Hyun Bae
Jun 20, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Lu HeYuhui Chen
Jul 15, 2020·Nanomaterials·Thang Phan Nguyen, Il Tae Kim
Aug 15, 2019·Small·Si MengHan Zhang
Jun 20, 2020·Advanced Materials·Zhaohui WangLeif Nyholm
Mar 18, 2020·Nanomaterials·Sergio PinillaCarmen Morant
May 27, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Nan ZhangLixin Chen
Jun 12, 2021·Science·Armin VahidMohammadiYury Gogotsi
Aug 17, 2021·Advanced Materials·Michael NaguibYury Gogotsi
Oct 8, 2019·The Journal of Physical Chemistry Letters·Shunlong ZhangWei-Qiang Han
Feb 23, 2020·ACS Nano·Ramin Rojaee, Reza Shahbazian-Yassar
Sep 26, 2019·ACS Nano·Benzheng LyuJeong Ho Cho
Aug 25, 2020·ACS Applied Materials & Interfaces·Hyeri KimJaseung Koo

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Methods Mentioned

BETA
atomic force microscopy
electron diffraction
scanning
X-ray
scanning electron microscopy

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