Work

Engineering of Metal–Organic Framework-Derived CoTiO3 Micro-Prisms for Lithium-Ion Batteries

Year: 2024

Type: article

Abstract: Metal–organic framework (MOF)-derived transition metal compounds and their composites have attracted great interest for applications in energy conversion and storage. In this work, hexagonal micro-prisms of Ni-doped CoTiO3 composited with amorphous carbon (NixCTO/C) were synthesized using Ti-Co-based MOFs as precursors. The experimental results indicate the substitutional doping of Ni2+ for Co2+ in CoTiO3 (CTO), leading to improved conductivity, as further confirmed by density functional theory calculations. Thus, the carbon-free sample of Ni-doped CTO exhibits improved lithium storage properties compared to the pristine one. Furthermore, when coupled with in situ-formed carbon, the dually modified Ni0.05CTO/C micro-prisms demonstrated a significantly increased reversible capacity of 584.8 mA h g−1, excellent rate capability, and superior cycling stability at a high current density of 500 mA g−1. This enhanced electrochemical performance can be attributed to the synergistic effect of Ni doping and carbon coating.

Source: Molecules

DOI: 10.3390/molecules30010034

Authors: Tao Li, Minghui Song, Qi Zhang, Yifan Li, Gengchen Yu, Xue Bai

Institutions: Xuzhou College of Industrial Technology, Shandong University of Science and Technology, Qingdao University of Technology

Language: English

Topic: Advancements in Battery Materials

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $3,069