title: Pretreatment of Lithium Surface by Using Iodic Acid (HIO3) To Improve Its Anode Performance in Lithium Batteries.
abstract: Iodic acid (HIO3) was exploited as the effective source to build an artificial solid-electrolyte interphase (SEI) on the surface of Li anode. On one hand, HIO3is a weak solid-state acid and can be easily handled to remove most ion-insulating residues like Li2CO3and/or LiOH from the pristine Li surface; on the other hand, both the products of LiI and LiIO3resulted from the chemical reactions between Li metal and HIO3are reported to be the ion-conductive components. As a result, the lower voltage polarization and impedance, longer cycling lifetime and higher Coulombic efficiency have been successfully achieved in the HIO3-treated Li-Li and Li-Cu cells. By further using the HIO3-treated Li anode into practical Li-S batteries, the impressive results also have been obtained, with average discharge capacities of 719 mAh g-1for 200 cycles (0.2 C) and 506 mAh g-1for 500 cycles (0.5 C), which were better than the Li-S batteries using the pristine Li anode (552 and 401 mAh g-1, respectively) under the same conditions.
authors.affiliation: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Microelectronics and Solid-state Electronics, University of Electronic Science and Technology of China (UESTC) , Chengdu 610054, People's Republic of China.
authors.forename: Weishang
authors.initials: W
authors.lastname: Jia
authors.affiliation: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Microelectronics and Solid-state Electronics, University of Electronic Science and Technology of China (UESTC) , Chengdu 610054, People's Republic of China.
authors.forename: Qingji
authors.initials: Q
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Microelectronics and Solid-state Electronics, University of Electronic Science and Technology of China (UESTC) , Chengdu 610054, People's Republic of China.
authors.forename: Jingyi
authors.initials: J
authors.lastname: Yang
authors.affiliation: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Microelectronics and Solid-state Electronics, University of Electronic Science and Technology of China (UESTC) , Chengdu 610054, People's Republic of China.
authors.forename: Cong
authors.identifier: http://orcid.org/0000-0002-9603-1594
authors.initials: C
authors.lastname: Fan
authors.affiliation: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Microelectronics and Solid-state Electronics, University of Electronic Science and Technology of China (UESTC) , Chengdu 610054, People's Republic of China.
authors.forename: Liping
authors.initials: L
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Microelectronics and Solid-state Electronics, University of Electronic Science and Technology of China (UESTC) , Chengdu 610054, People's Republic of China.
authors.forename: Jingze
authors.identifier: http://orcid.org/0000-0002-8455-7601
authors.initials: J
authors.lastname: Li
keywords: Li−S battery; iodic acid; lithium anode; lithium battery; solid-electrolyte interphase