Scalable synthesis of ant-nest-like bulk porous silicon for high-performance lithium-ion battery anodes

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

View graph of relations

Author(s)

  • Weili An
  • Biao Gao
  • Shixiong Mei
  • Ben Xiang
  • Jijiang Fu
  • Lei Wang
  • Qiaobao Zhang
  • Kaifu Huo

Detail(s)

Original languageEnglish
Article numberARTN 1447
Journal / PublicationNature Communications
Volume10
Early online date29 Mar 2019
Publication statusPublished - 2019

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 poroussilicon 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 fullcell with the prelithiated silicon anode and Li(Ni1/3Co1/3Mn1/3)O2 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.

Research Area(s)

  • SIZE-DEPENDENT FRACTURE, NEGATIVE ELECTRODE, LOW-COST, LITHIATION, COMPOSITE, TEMPLATE, DYNAMICS, DESIGN

Citation Format(s)

Scalable synthesis of ant-nest-like bulk porous silicon for high-performance lithium-ion battery anodes. / An, Weili; Gao, Biao; Mei, Shixiong; Xiang, Ben; Fu, Jijiang; Wang, Lei; Zhang, Qiaobao; Chu, Paul K.; Huo, Kaifu.

In: Nature Communications, Vol. 10, ARTN 1447, 2019.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review