000117469 001__ 117469
000117469 005__ 20240319081000.0
000117469 0247_ $$2doi$$a10.1016/j.mtener.2022.100979
000117469 0248_ $$2sideral$$a128772
000117469 037__ $$aART-2022-128772
000117469 041__ $$aeng
000117469 100__ $$aSiller, V.
000117469 245__ $$aSafe extended-range cycling of Li4Ti5O12-based anodes for ultra-high capacity thin-film batteries
000117469 260__ $$c2022
000117469 5060_ $$aAccess copy available to the general public$$fUnrestricted
000117469 5203_ $$aLithium titanium oxide thin films are increasingly popular anode materials in microbatteries and hybrid supercapacitors, due to their improved safety, cost, and cycle lifetime. So far, research efforts have mainly focused on the pure spinel phase Li4Ti5O12 (LTO) and only a small fraction is dedicated to a broader spectrum of titanium-based metal oxide thin films. In this work, pulsed laser deposition is used in a multilayer approach by alternating LTO and Li2O ablations to create a heterogeneous landscape in the titania-based micro-anodes. This rich microstructure enables the safe extension of the accessible electrochemical window down to 0.2 V. This leads to extraordinary high specific capacities of 250–300 mAh/g at 1 C, maintaining a stable discharge capacity of 180 mAh/g at 16 C. Operando spectroscopic ellipsometry and Raman spectroscopy are used to track optical and structural changes as a function of the discharge voltage down to 0.01 V. A kinetically limited degradation mechanism based on the effective trapping of Li-ions at the octahedral 16c positions is proposed when cycling in the range of 0.2–0.01 V. In essence, our work contributes to titania-based nanoshapes as anodes of increased specific capacity due to a higher Li-site occupation, while maintaining their good stability and safety. © 2022 The Author(s)
000117469 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E13-20R$$9info:eu-repo/grantAgreement/EC/H2020/801342/EU/ACCIÓ programme to foster mobility of researchers with a focus in applied research and technology transfer/TECNIOspringINDUSTRY$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 801342-801342-TECNIOspringINDUSTRY$$9info:eu-repo/grantAgreement/EC/H2020/823717/EU/Enabling Science and Technology through European Electron Microscopy/ESTEEM3$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 823717-ESTEEM3$$9info:eu-repo/grantAgreement/EC/H2020/824072/EU/Energy HarveStorers for Powering the Internet of Things/HARVESTORE$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 824072-HARVESTORE$$9info:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/PID2019-104739GB-I00-AEI-10.13039-501100011033
000117469 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000117469 590__ $$a9.3$$b2022
000117469 592__ $$a2.046$$b2022
000117469 591__ $$aCHEMISTRY, PHYSICAL$$b35 / 161 = 0.217$$c2022$$dQ1$$eT1
000117469 593__ $$aEnergy Engineering and Power Technology$$c2022$$dQ1
000117469 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b58 / 343 = 0.169$$c2022$$dQ1$$eT1
000117469 593__ $$aFuel Technology$$c2022$$dQ1
000117469 591__ $$aENERGY & FUELS$$b20 / 119 = 0.168$$c2022$$dQ1$$eT1
000117469 593__ $$aRenewable Energy, Sustainability and the Environment$$c2022$$dQ1
000117469 593__ $$aNuclear Energy and Engineering$$c2022$$dQ1
000117469 593__ $$aMaterials Science (miscellaneous)$$c2022$$dQ1
000117469 594__ $$a12.5$$b2022
000117469 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000117469 700__ $$aGonzalez-Rosillo, J.
000117469 700__ $$aNuñez Eroles, M.
000117469 700__ $$aStchakovsky, M.
000117469 700__ $$0(orcid)0000-0002-2071-9093$$aArenal, R.
000117469 700__ $$aMorata, A.
000117469 700__ $$aTarancón, A.
000117469 773__ $$g25, 100979 (2022), [11 pp]$$tMaterials Today Energy$$x2468-6069
000117469 8564_ $$s2690513$$uhttps://zaguan.unizar.es/record/117469/files/texto_completo.pdf$$yVersión publicada
000117469 8564_ $$s2744879$$uhttps://zaguan.unizar.es/record/117469/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000117469 909CO $$ooai:zaguan.unizar.es:117469$$particulos$$pdriver
000117469 951__ $$a2024-03-18-14:05:41
000117469 980__ $$aARTICLE