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Li-O-2 Cell with Lil(3-hydroxypropionitrile)(2) as a Redox Mediator: Insight into the Working Mechanism of I- during Charge in Anhydrous Systems
Li, Yang1,2; Dong, Shanmu1; Chen, Bingbing1; Lu, Chenglong3; Liu, Kailiang3; Zhang, Zhonghua1,2; Du, Huiping1,2; Wang, Xiaogang1; Chen, Xiao1; Zhou, Xinhong3; Cui, Guanglei1
2017-09-07
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume8Issue:17Pages:4218-4225
AbstractRedox mediators (RMs) have been widely applied to reduce the charge overpotential of nonaqueous lithium-oxygen (Li-O-2) batteries. Among the reported RMs, LiI is under hot debate with lots of controversial reports. However, there is a limited understanding of the charge mechanism of I- in anhydrous Li-O-2 batteries. Here, we study the chemical reactivity between the oxidized state of I- and Li2O2. We confirm that the Li2O2 particles could be chemically oxidized by I-2 rather than I-3(-) species. Furthermore, our work demonstrates that the generated I- from Li2O2 oxidation would combine with I-2 to give I-3(-) species, hindering further oxidation of Li2O2 by I-2. To improve the working efficiency of I- RMs, we introduce a compound LiI(3-hydroxypropionitrile)(2) (LiI(HPN)(2)) with a high binding ability of I-. Compared with LiI, the cell that contained LiI(HPN)(2) shows a significantly increased amount of I-2 species during charge and enhanced Li2O2 oxidation efficiency under the same working conditions.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1021/acs.jpclett.7b01497
WOS KeywordLITHIUM-OXYGEN BATTERIES ; LI-AIR BATTERIES ; SENSITIZED SOLAR-CELLS ; ELECTROLYTE-SOLUTIONS ; ION-PAIR ; LI2O2 ; REDUCTION ; CATALYST ; IODIDE ; WATER
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
Funding OrganizationNational Science Fund for Distinguished Young Scholars(51625204) ; National Natural Science Foundation of China(21473228) ; Youth Innovation Promotion Association of CAS(2016193) ; Key Technology Research Projects of Qingdao(13-CX-10)
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical
WOS IDWOS:000410600600041
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qibebt.ac.cn/handle/337004/9574
Collection仿生与固态能源系统研究组
Affiliation1.Chinese Acad Sci, Qingdao Ind Energy Storage Res Inst, Qingdao Inst Bioenergy & Bioproc Technol, 189 Songling Rd, Qingdao 266101, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, 53 Zhengzhou Rd, Qingdao 266042, Peoples R China
Recommended Citation
GB/T 7714
Li, Yang,Dong, Shanmu,Chen, Bingbing,et al. Li-O-2 Cell with Lil(3-hydroxypropionitrile)(2) as a Redox Mediator: Insight into the Working Mechanism of I- during Charge in Anhydrous Systems[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2017,8(17):4218-4225.
APA Li, Yang.,Dong, Shanmu.,Chen, Bingbing.,Lu, Chenglong.,Liu, Kailiang.,...&Cui, Guanglei.(2017).Li-O-2 Cell with Lil(3-hydroxypropionitrile)(2) as a Redox Mediator: Insight into the Working Mechanism of I- during Charge in Anhydrous Systems.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,8(17),4218-4225.
MLA Li, Yang,et al."Li-O-2 Cell with Lil(3-hydroxypropionitrile)(2) as a Redox Mediator: Insight into the Working Mechanism of I- during Charge in Anhydrous Systems".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 8.17(2017):4218-4225.
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