A Universal Strategy for Hollow Metal Oxide Nanoparticles Encapsulated into B/N Co-Doped Graphitic Nanotubes as High-Performance Lithium-Ion Battery Anodes

Hassina Tabassum; Ruqiang Zou; Asif Mahmood; Zibin Liang; Qingfei Wang; Hao Zhang; Song Gao; Chong Qu; Wenhan Guo; Shaojun Guo

doi:10.1002/adma.201705441

A Universal Strategy for Hollow Metal Oxide Nanoparticles Encapsulated into B/N Co-Doped Graphitic Nanotubes as High-Performance Lithium-Ion Battery Anodes

Adv Mater. 2018 Feb;30(8). doi: 10.1002/adma.201705441. Epub 2018 Jan 10.

Authors

Affiliation

¹ Beijing Key Lab of Theory and Technology for Advanced Battery Materials, Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, China.

PMID: 29318669
DOI: 10.1002/adma.201705441

Abstract

Yolk-shell nanostructures have received great attention for boosting the performance of lithium-ion batteries because of their obvious advantages in solving the problems associated with large volume change, low conductivity, and short diffusion path for Li⁺ ion transport. A universal strategy for making hollow transition metal oxide (TMO) nanoparticles (NPs) encapsulated into B, N co-doped graphitic nanotubes (TMO@BNG (TMO = CoO, Ni₂ O₃ , Mn₃ O₄ ) through combining pyrolysis with an oxidation method is reported herein. The as-made TMO@BNG exhibits the TMO-dependent lithium-ion storage ability, in which CoO@BNG nanotubes exhibit highest lithium-ion storage capacity of 1554 mA h g^-1 at the current density of 96 mA g^-1 , good rate ability (410 mA h g^-1 at 1.75 A g^-1 ), and high stability (almost 96% storage capacity retention after 480 cycles). The present work highlights the importance of introducing hollow TMO NPs with thin wall into BNG with large surface area for boosting LIBs in the terms of storage capacity, rate capability, and cycling stability.

Keywords: graphitic nanotubes; hollow structures; lithium-ion batteries; transition metals.