A high performance electrode material for lithium ion batteries derived from a cobalt-based coordination polymer

作者：Ilyas Tehseen; Nasim Fatima; Choucair Mohammad; Ullah Shafiq; Khan M Abdullah; Badshah Amin; Nadeem Muhammad Arif^*

来源：International Journal of Hydrogen Energy, 2016, 41(38): 17029-17036.

DOI：10.1016/j.ijhydene.2016.07.067

• Coordination polymer
• Lithium ion batteries
• Electrode material
• Carbon composite

A carbon rich co-ordination polymer, [Co(fa)(bpy)](n) (1), based on formic acid (fa) and an auxiliary ligand 4,4'-bipyridine (bpy) is utilized as a single source precursor to an exceptional lithium-ion battery electrode material. Compound 1 consists of cobalt-formate chains connected via bipyridine ligands into a three dimensional lattice. A cobalt-oxide/carbon composite material is obtained by the controlled carbonization of 1 at 900 degrees C. Morphological, structural, and chemical analysis of the composite is carried out with HR-TEM, XPS and PXRD techniques. This new composite material demonstrates a high specific capacity of 1080 mAh g(-1), a coulombic efficiency of 94%, and a stable cyclic retention for upto 30 cycles. The electrochemical properties of this new material are discussed in relation to the structural and chemical characteristics of precursor dependence of the carbonized hybrid nanomaterial.

• 出版日期2016-10-15