Construction of 1D conductive Ni-MOF nanorods with fast Li⁺ kinetic diffusion and stable high-rate capacities as an anode for lithium ion batteries

Abstract

1D conductive Ni-CAT nanorods with a superb Li+ diffusion coefficient and electronic conductivity exhibited remarkable electrochemical lithium storage properties, and the charge-storage mechanism involved was rationally put forward.

Conductive metal‐organic frameworks: Recent advances in electrochemical energy‐related applications and perspectives

“… 72 The Cu 3 (HHTP) 2 also exhibits good long‐term cycling stability with a retained capacity of about 540 mAh/g after 500 cycles at 500 mAh/g (Figure 5E). 70 Especially, the transmission electron microscopy (TEM) images of Ni 3 (HHTP) 2 after 300 cycles show that although its morphology has changed, it still maintains the 1D NR structure, indicating the good structural stability 72 . The change of peak intensity in the ex situ X‐ray diffraction (XRD) pattern during the first charge and discharge also shows its stable crystal structure 72 .…”

“… 70 Especially, the transmission electron microscopy (TEM) images of Ni 3 (HHTP) 2 after 300 cycles show that although its morphology has changed, it still maintains the 1D NR structure, indicating the good structural stability 72 . The change of peak intensity in the ex situ X‐ray diffraction (XRD) pattern during the first charge and discharge also shows its stable crystal structure 72 . More strikingly, the M 3 (HHTP) 2 (M = Cu, Co, and Ni) electrodes all exhibits high lithium‐ion diffusion coefficients ( D Li+ ) of approximately 10 −10 to 10 −9 cm 2 /s during the discharging process (Figure 5F), which are higher than that of hollow Fe–Mn–O/C microspheres, hollow NiO@Co 3 O 4 @graphene quantum dot spheres, ZnCo 2 O 4 @CNTs, and so on 73‐75 .…”

“…Reproduced with permission: Copyright 2019, Wiley 70 . Reproduced with permission: Copyright 2019, Royal Society of Chemistry 71,72 …”

Conductive Metal-Organic Frameworks for Amperometric Sensing of Paracetamol

“…The XRD pattern of NiCu-CAT clearly reveals three sharp intense peaks of (100), (200) and (210) planes at 2θ = 4.7 • , 9.5 • , and 12.4 • , respectively. The peaks indicate the long-range order of the nanocrystal in the ab-plane (Miner et al, 2018;Guo et al, 2019;Ko et al, 2020). Fourier transform infrared spectroscopy (FT-IR) is conducted, as showed in Supplementary Figure 2.…”

“…As one of the most popular materials at present, the conductive nano-Metal Organic Framework (MOFs) (Campbell and Dincȃ, 2017;Biswas et al, 2020;Ko et al, 2020;Suwannakot et al, 2020) have many advantages, such as simple synthesis process, environmental friendliness, adjustable structure and so on, especially its excellent conductivity, which has attracted extensive attention (Ko et al, 2017;Fang et al, 2018;Xie et al, 2020). Metal-catecholates (M-CATs) are a kind of conductive MOF composed of HHTP ligands and central metal ions (Miner et al, 2018;Zhang et al, 2018Zhang et al, , 2019Guo et al, 2019). The good conductivity of M-CATs is mainly due to its special structure, in which oxygen atoms in an HHTP ligand can also combine with axial water ligands to form hydrogen bonds.…”