Affiliation:
1. Materials Science, Energy, and Nano-engineering Department Mohammed VI Polytechnic University Ben Guerir Morocco
2. Laboratory of Physic-Chemistry, Materials and Catalysis department of chemistry Faculty of Sciences Ben M'sik University Hassan II of Casablanca Casablanca Morocco
3. Department of Chemistry and Institute of Nanotechnology and Advanced Materials Bar-Ilan University Ramat-Gan 52900 Israel
4. Chemical Sciences and engineering Division Argonne National Laboratory 9700 S. Cass Avenue Lemont IL 60439 USA
Abstract
AbstractTiO2 material has gained significant attention for large‐scale energy storage due to its abundant, low‐cost, and environmentally friendly properties, as well as the availability of various nanostructures. Phosphorus doping has been established as an effective technique for improving electronic conductivity and managing the slow ionic diffusion kinetics of TiO2. In this study, non‐doped and phosphorus doped TiO2 materials were synthesized using sodium alginate biopolymer as chelating agent. The prepared materials were evaluated as anode materials for lithium‐ion batteries (LIBs). The electrodes exhibit remarkable electrochemical performance, including a high reversible capacity of 235 mAh g−1 at 0.1 C and excellent first coulombic efficiency of 99 %. An integrated approach, combining operando XRD and ex‐situ XAS, comprehensively investigates the relationship between phosphorus doping, material structure, and electrochemical performance, reinforced by analytical tools and first principles calculations. Furthermore, a full cell was designed using 2 %P‐doped TiO2 anode and LiFePO4 cathode. The output voltage was about 1.6 V with high initial specific capacity of 148 mAh g−1, high rate‐capability of 120 mAh g−1 at 1 C, and high‐capacity retention of 96 % after 1000 cycles at 1 C.
Funder
Université Mohammed VI Polytechnique
U.S. Department of Energy
Subject
Electrochemistry,Electrical and Electronic Engineering,Energy Engineering and Power Technology
Cited by
1 articles.
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