Coupling of a conductive Ni3(2, 3, 6, 7, 10, 11-hexaiminotriphenylene)2 metal–organic framework with silicon nanoparticles for use in high-capacity lithium-ion batteries. Issue 3 (24th December 2019)

• Record Type: Journal Article
• Authors: Nazir, Aqsa; Le, Hang T. T.; Min, Chan-Woo; Kasbe, Arvind; Kim, Jaekook; Jin, Chang-Soo; Park, Chan-Jin
• Is Part Of: Nanoscale. Volume 12:Issue 3(2020)
• Page Start: 1629
• Page End: 1642
• Publication Date: 2019-12-24
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c9nr08038d
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : A composite of Si nanoparticles and a two dimensional porous conductive Ni3 (2, 3, 6, 7, 10, 11-hexaiminotriphenylene)2 (Ni3 (HITP)2 ) metal–organic framework (MOF), namely Si/Ni3 (HITP)2, is suggested as a potential anode material for Li-ion batteries. Abstract : A composite of Si nanoparticles (SiNPs) and a two-dimensional (2D) porous conductive Ni3 (2, 3, 6, 7, 10, 11-hexaiminotriphenylene)2 (Ni3 (HITP)2 ) metal–organic framework (MOF), namely Si/Ni3 (HITP)2, is suggested as a potential anode material for Li-ion batteries (LIBs). The Ni3 (HITP)2 MOF with a carbon backbone and evenly dispersed Ni and N heteroatoms showed high potential for mitigating the volume expansion of Si and enhancing the electronic conductivity as well as Li storage ability of the Si/Ni3 (HITP)2 anode. The Si/Ni3 (HITP)2 electrode delivered a reversible capacity of 2657 mA h g −1 after 100 cycles of discharge–charge at a rate of 0.1C. Moreover, at a high rate of 1C, the Si/Ni3 (HITP)2 electrode maintained a reversible capacity of 876 mA h g −1 even after 1000 cycles. The different rate capacities were 1655, 1129, and 721 mA h g −1 at 5C, 10C and 20C, respectively. The excellent electrochemical performance of the Si/Ni3 (HITP)2 electrode in terms of improved cycle life and rate capability results from the open channels of the MOF network, which are beneficial for the movement of Li + ions through the electrolyte to the electrode and the mitigation of stress by volume expansion of Si. We believe that the coupling of conductive Ni3 (HITP)2 with Si is a potential way to make an anode for high-performance LIBs.