TY - JOUR
T1 - A high-performance Li-ion anode from direct deposition of Si nanoparticles
AU - Xu, Yaolin
AU - Swaans, Ellie
AU - Chen, Sibo
AU - Basak, Shibabrata
AU - Harks, Peter-Paul
AU - Peng, Bo
AU - Zandbergen, Henny W.
AU - Borsa, Dana M.
AU - Mulder, Fokko M.
PY - 2017/8/1
Y1 - 2017/8/1
N2 - Nanostructured silicon has been intensively investigated as a high capacity Li-ion battery anode. However, the commercial introduction still requires advances in the scalable synthesis of sophisticated Si nanomaterials and electrodes. Moreover, the electrode degradation due to volume changes upon de-/lithiation, low areal electrode capacity, and application of large amounts of advanced conductive additives are some of the challenging aspects. Here we report a Si electrode, prepared from direct deposition of Si nanoparticles on a current collector without any binder or conducting additives, that addresses all of the above issues. It exhibits an excellent cycling stability and a high capacity retention taking advantages of what appears to be a locally protective, yolk-shell reminiscent, solid electrolyte interphase (SEI) formation. Cycling an electrode with a Si nanoparticle loading of 2.2 mg cm−2 achieved an unrivalled areal capacity retention, specifically, up to 4.2 mAh cm−2 and ~ 1.5 mAh cm−2 at 0.8 mA cm−2 and 1.6 mA cm−2, respectively.
AB - Nanostructured silicon has been intensively investigated as a high capacity Li-ion battery anode. However, the commercial introduction still requires advances in the scalable synthesis of sophisticated Si nanomaterials and electrodes. Moreover, the electrode degradation due to volume changes upon de-/lithiation, low areal electrode capacity, and application of large amounts of advanced conductive additives are some of the challenging aspects. Here we report a Si electrode, prepared from direct deposition of Si nanoparticles on a current collector without any binder or conducting additives, that addresses all of the above issues. It exhibits an excellent cycling stability and a high capacity retention taking advantages of what appears to be a locally protective, yolk-shell reminiscent, solid electrolyte interphase (SEI) formation. Cycling an electrode with a Si nanoparticle loading of 2.2 mg cm−2 achieved an unrivalled areal capacity retention, specifically, up to 4.2 mAh cm−2 and ~ 1.5 mAh cm−2 at 0.8 mA cm−2 and 1.6 mA cm−2, respectively.
KW - Direct deposition
KW - Li ion battery
KW - One-off SEI formation
KW - Si nanoparticles
UR - http://www.scopus.com/inward/record.url?scp=85020759630&partnerID=8YFLogxK
U2 - 10.1016/j.nanoen.2017.06.011
DO - 10.1016/j.nanoen.2017.06.011
M3 - Article
AN - SCOPUS:85020759630
SN - 2211-2855
VL - 38
SP - 477
EP - 485
JO - Nano Energy
JF - Nano Energy
ER -