{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Kacica CT"],"funding":["Division of Earth Sciences","Division of Materials Research"],"pagination":["2160-2169"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC9419002"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["2(5)"],"pubmed_abstract":["A high-rate lithium ion battery electrode consisting of nanostructured copper-doped TiO<sub>2</sub> films, synthesized using a single-step, template-free aerosol chemical vapor deposition technique, is reported herein. A narrowing of the band gap of the copper-doped films from 2.92 to 1.93 eV corresponds to a large increase in electronic conductivity, overcoming a major drawback of pristine TiO<sub>2</sub> in electronic applications. Lithium-ion batteries using copper-doped films as the negative electrode exhibit improved charge retention at ultra-high charge rates, up to 50C. Additionally, over 2000 charge-discharge cycles at a rate of 10C, the copper-doped TiO<sub>2</sub> electrodes display higher stable cycling capacities. Cyclic voltammetry (CV) and a galvanostatic intermittent titration technique (GITT) provide insight into the chemical diffusion of Li<sup>+</sup> in the TiO<sub>2</sub> matrix, with copper-doped TiO<sub>2</sub> electrodes exhibiting an order of magnitude higher value in CV measurements over pristine TiO<sub>2</sub>. GITT provided the state-of-charge (SoC) resolved chemical diffusion coefficient of Li<sup>+</sup> and suggests that a minimum value occurs at a moderate SoC of 60%, with values near the extremes being over two orders of magnitude higher. Both techniques indicate increased Li<sup>+</sup> mobility due to copper-doping, supporting improved electrochemical performance in ultra-high rate battery testing."],"journal":["Nanoscale advances"],"pubmed_title":["Improved conductivity and ionic mobility in nanostructured thin films <i>via</i> aliovalent doping for ultra-high rate energy storage."],"pmcid":["PMC9419002"],"funding_grant_id":["1161543","1806147"],"pubmed_authors":["Kacica CT","Biswas P"],"additional_accession":[]},"is_claimable":false,"name":"Improved conductivity and ionic mobility in nanostructured thin films <i>via</i> aliovalent doping for ultra-high rate energy storage.","description":"A high-rate lithium ion battery electrode consisting of nanostructured copper-doped TiO<sub>2</sub> films, synthesized using a single-step, template-free aerosol chemical vapor deposition technique, is reported herein. A narrowing of the band gap of the copper-doped films from 2.92 to 1.93 eV corresponds to a large increase in electronic conductivity, overcoming a major drawback of pristine TiO<sub>2</sub> in electronic applications. Lithium-ion batteries using copper-doped films as the negative electrode exhibit improved charge retention at ultra-high charge rates, up to 50C. Additionally, over 2000 charge-discharge cycles at a rate of 10C, the copper-doped TiO<sub>2</sub> electrodes display higher stable cycling capacities. Cyclic voltammetry (CV) and a galvanostatic intermittent titration technique (GITT) provide insight into the chemical diffusion of Li<sup>+</sup> in the TiO<sub>2</sub> matrix, with copper-doped TiO<sub>2</sub> electrodes exhibiting an order of magnitude higher value in CV measurements over pristine TiO<sub>2</sub>. GITT provided the state-of-charge (SoC) resolved chemical diffusion coefficient of Li<sup>+</sup> and suggests that a minimum value occurs at a moderate SoC of 60%, with values near the extremes being over two orders of magnitude higher. Both techniques indicate increased Li<sup>+</sup> mobility due to copper-doping, supporting improved electrochemical performance in ultra-high rate battery testing.","dates":{"release":"2020-01-01T00:00:00Z","publication":"2020 May","modification":"2026-03-31T11:21:06.865Z","creation":"2025-02-19T01:37:11.634Z"},"accession":"S-EPMC9419002","cross_references":{"pubmed":["36132522"],"doi":["10.1039/d0na00160k"]}}