Title

Rational design of Si@carbon with robust hierarchically porous custard-apple-like structure to boost lithium storage

RIS ID

115221

Publication Details

Xu, R., Wang, G., Zhou, T., Zhang, Q., Cong, H., Xin, S., Rao, J., Zhang, C., Liu, Y., Guo, Z. & Yu, S. (2017). Rational design of Si@carbon with robust hierarchically porous custard-apple-like structure to boost lithium storage. Nano Energy, 39 253-261.

Abstract

In this work, we have developed a simple approach to rationally design and controllably synthesize custard-apple-like Si@N, O-dual-doped carbon with hierarchical porosity. This material delivers outstanding reversible capacity at high current density with good rate capability and a long cycling life of over 4000 cycles as an anode for Li-ion batteries. A detailed eletrochemical kinetic analysis reveals that the lithium ion charge storage partly depends on the capacitance-controlled behavior, with a high capacitive contribution up to 30.3% for the total capacity at 1 mV s ¿1 . The impressive eletrochemical performance demonstrates that the Si@mNOC anode has great potential to meet the challenges arising from the use of Si nanoparticles as anode for next-generation large-scale energy storage.

Grant Number

ARC/FT150100109

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