Boron-Doped Spherical Hollow-Porous Silicon Local Lattice Expansion toward a High-Performance Lithium-Ion-Battery Anode

Yongpeng Ren, Xiangyang Zhou, Jingjing Tang, Jing Ding, Song Chen, Jiaming Zhang, Tingjie Hu, Xu Sheng Yang (Corresponding Author), Xinming Wang, Juan Yang (Corresponding Author)

Research output: Journal article publicationJournal articleAcademic researchpeer-review

34 Citations (Scopus)


Silicon (Si) attracts extensive attention as the advanced anode material for lithium (Li)-ion batteries (LIBs) because of its ultrahigh Li storage capacity and suitable voltage plateau. Hollow porous structure and dopant-induced lattice expansion can enhance the cycling stability and transporting kinetics of Li ions. However, it is still difficult to synthesize the Si anode possessing these structures simultaneously by a facile method. Herein, the lightly boron (B)-doped spherical hollow-porous Si (B-HPSi) anode material for LIBs is synthesized by a facile magnesiothermic reduction from B-doped silica. B-HPSi exhibits local lattice expansion located on boundaries of refined subgrains. B atoms in Si contribute to the increase of the conductivity and the expansion of lattices. On the basis of the first-principles calculations, the B dopants induce the conductivity increase and local lattice expansion. As a result, B-HPSi electrodes exhibit a high specific capacity of ∼1500 mAh g -1 at 0.84 A g -1 and maintains 93% after 150 cycles. The reversible capacities of ∼1250, ∼1000, and ∼800 mAh g -1 can be delivered at 2.1, 4.2, and 8.4 A g -1 , respectively.

Original languageEnglish
Pages (from-to)4592-4599
Number of pages8
JournalInorganic Chemistry
Issue number7
Publication statusPublished - 1 Apr 2019

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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