Synthesis of MnO/C/Co3O4 nanocomposites by a Mn2+-oxidizing bacterium as a biotemplate for lithium-ion batteries. Issue 1 (31st December 2021)

• Record Type: Journal Article
• Authors: Liu, Jin; Gu, Tong; Sun, Xiaowen; Li, Li; Xiao, Fan; Wang, Zhiyong; Li, Lin
• Is Part Of: Science and technology of advanced materials. Volume 22:Issue 1(2021)
• Page Start: 429
• Page End: 440
• Publication Date: 2021-12-31
• Subjects: Biogenic manganese oxides -- biotemplate -- hollow porous nanostructure -- metal ion incorporation -- lithium-ion battery; 40 Optical, magnetic and electronic device materials -- 102 Porous / Nanoporous / Nanostructured materials -- 207 Fuel cells / Batteries / Super capacitors; Materials -- Technological innovations -- Periodicals; 620.112
• DOI: 10.1080/14686996.2021.1927175
• Languages: English
• ISSNs: 1468-6996

Abstract

ABSTRACT: The biotemplate and bioconversion strategy represents a sustainable and environmentally friendly approach to material manufacturing. In the current study, biogenic manganese oxide aggregates of the Mn 2+ -oxidizing bacterium Pseudomonas sp. T34 were used as a precursor to synthesize a biocomposite that incorporated Co (CMC-Co) under mild shake-flask conditions based on the biomineralization process of biogenic Mn oxides and the characteristics of metal ion subsidies. X-ray photoelectron spectroscopy, phase composition and fine structure analyses demonstrated that hollow MnO/C/Co3 O4 multiphase composites were fabricated after high-temperature annealing of the biocomposites at 800°C. The cycling and rate performance of the prepared anode materials for lithium-ion batteries were compared. Due to the unique hollow structure and multiphasic state, the reversible discharge capacity of CMC-Co remained at 650 mAh g –1 after 50 cycles at a current density of 0.1 Ag –1, and the coulombic efficiency remained above 99% after the second cycle, indicating a good application potential as an anode material for lithium-ion batteries. Graphical abstract: uf0001