One-Step Pyro-Synthesis of a Nanostructured Mn3 O4 /C Electrode with Long Cycle Stability for Rechargeable Lithium-Ion Batteries

Muhammad Hilmy Alfaruqi; Jihyeon Gim; Sungjin Kim; Jinju Song; Pham Tung Duong; Jeonggeun Jo; Joseph Paul Baboo; Zhiliang Xiu; Vinod Mathew; Jaekook Kim

doi:10.1002/chem.201504609

One-Step Pyro-Synthesis of a Nanostructured Mn₃ O₄ /C Electrode with Long Cycle Stability for Rechargeable Lithium-Ion Batteries

Chemistry. 2016 Feb;22(6):2039-2045. doi: 10.1002/chem.201504609. Epub 2016 Jan 8.

Authors

Affiliations

¹ Department of Materials Science and Engineering, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju, 500-757, South Korea.
² Department of Materials Science and Engineering, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju, 500-757, South Korea. jaekook@chonnam.ac.kr.

PMID: 26749376
DOI: 10.1002/chem.201504609

Abstract

A nanostructured Mn₃ O₄ /C electrode was prepared by a one-step polyol-assisted pyro-synthesis without any post-heat treatments. The as-prepared Mn₃ O₄ /C revealed nanostructured morphology comprised of secondary aggregates formed from carbon-coated primary particles of average diameters ranging between 20 and 40 nm, as evidenced from the electron microscopy studies. The N₂ adsorption studies reveal a hierarchical porous feature in the nanostructured electrode. The nanostructured morphology appears to be related to the present rapid combustion strategy. The nanostructured porous Mn₃ O₄ /C electrode demonstrated impressive electrode properties with reversible capacities of 666 mAh g^-1 at a current density of 33 mA g^-1 , good capacity retentions (1141 mAh g^-1 with 100 % Coulombic efficiencies at the 100^th cycle), and rate capabilities (307 and 202 mAh g^-1 at 528 and 1056 mA g^-1 , respectively) when tested as an anode for lithium-ion battery applications.

Keywords: Li-ion batteries; anode materials; electrochemistry; nanostructures; pyro-synthesis.