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Guo L, Xin C, Gao J, Zhu J, Hu Y, Zhang Y, Li J, Fan X, Li Y, Li H, Qiu J, Zhou W. The Electrolysis of Anti‐Perovskite Li
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OHCl for Prelithiation of High‐Energy‐Density Batteries. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102605] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Lulu Guo
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Beijing 100029 China
| | - Chen Xin
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Beijing 100029 China
| | - Jian Gao
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Beijing 100029 China
| | - Jianxun Zhu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Beijing 100029 China
| | - Yiming Hu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Beijing 100029 China
| | - Ying Zhang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Beijing 100029 China
| | - Junpeng Li
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Beijing 100029 China
| | - Xiulin Fan
- School of Materials Science and Engineering Zhejiang University Hangzhou 310058 China
| | - Yutao Li
- Science and Engineering Program & Texas Materials Institute The University of Texas at Austin Austin TX 78712 USA
| | - Hong Li
- Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and Devices Institute of Physics Chinese Academy of Sciences Beijing 100190 China
| | - Jieshan Qiu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Beijing 100029 China
| | - Weidong Zhou
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Beijing 100029 China
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Guo L, Xin C, Gao J, Zhu J, Hu Y, Zhang Y, Li J, Fan X, Li Y, Li H, Qiu J, Zhou W. The Electrolysis of Anti-Perovskite Li 2 OHCl for Prelithiation of High-Energy-Density Batteries. Angew Chem Int Ed Engl 2021; 60:13013-13020. [PMID: 33720494 DOI: 10.1002/anie.202102605] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Indexed: 11/10/2022]
Abstract
Anti-perovskite type Li2 OHCl was previously studied as a solid-state Li+ conductor. Here, we report that the Li2 OHCl can be electrolyzed at 3.3 V or 4.0 V, with the creation of O2 /HCl gases and the release of 2 equiv. Li+ via two different decomposition routes, depending on the acidity of electrolyte. In the electrolyte with trace acid, the Li2 OHCl is oxidized at a constant voltage of 3.3 V. In neutral electrolyte, the oxidization of Li2 OHCl starts at 4.0 V, but the produced HCl will increase the acidity of electrolyte and lead to a voltage drop to 3.3 V for the electrolysis of Li2 OHCl. The electrolysis of Li2 OHCl delivers a lithium releasing capacity as high as 810 mAh g-1 , with an equivalent Li-deposition or Li-intercalation on anode, making it a promising candidate as a Li reservoir for prelithiation of anode. Using Li2 OHCl as the lithium source, silicon-carbon (Si@C) composite anode can be effectively prelithiated. The full cells composed of LiNi0.8 Mn0.1 Co0.1 O2 (NMC811) cathode and prelithiated Si@C anode exhibited increased capacities with the increment of prelithiation dosages.
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Affiliation(s)
- Lulu Guo
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Chen Xin
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jian Gao
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jianxun Zhu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Yiming Hu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Ying Zhang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Junpeng Li
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Xiulin Fan
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310058, China
| | - Yutao Li
- Science and Engineering Program & Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Hong Li
- Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jieshan Qiu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Weidong Zhou
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
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Dai W, Cui X, Chi X, Zhou Y, Yang J, Lian X, Zhang Q, Dong W, Chen W. Potassium Doping Facilitated Formation of Tunable Superoxides in Li 2O 2 for Improved Electrochemical Kinetics. ACS APPLIED MATERIALS & INTERFACES 2020; 12:4558-4564. [PMID: 31960670 DOI: 10.1021/acsami.9b21554] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Superoxide (O2-) species play a crucial role in determining the charge kinetics for aprotic lithium-oxygen (Li-O2) batteries. However, the growth of O2--rich lithium peroxide (Li2O2) is challenging since O2- is thermodynamically unfavorable and unstable in an O2 atmosphere. Herein, we reported the synthesis of defective Li2O2 with tunable O2- via K+ doping. The K+ dopants can successfully stabilize O2- species and induce the coordination of Li+ with O2-, leading to increased Li vacancies. Compared to the pristine Li2O2, the as-prepared defective Li2O2 can be charged at a lower overpotential in Li-O2 batteries, which is ascribed to further increased Li vacancies contributed by the depotassiation process at the onset of the charge process. Our findings suggest a new strategy to better control O2- species in Li2O2 by K+ dopants and provide insights into the K+ effects on charge mechanism in Li-O2 batteries.
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Affiliation(s)
- Wenrui Dai
- Advanced Energy Storage Materials and Devices Lab, School of Physics and Electronic-Electrical Engineering , Ningxia University , Yinchuan 750021 , P. R. China
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , 117543 Singapore
- National University of Singapore (Suzhou) Research Institute , 377 Lin Quan Street , Suzhou Industrial Park , Suzhou , Jiangsu 215123 , P. R. China
| | - Xinhang Cui
- National University of Singapore (Suzhou) Research Institute , 377 Lin Quan Street , Suzhou Industrial Park , Suzhou , Jiangsu 215123 , P. R. China
- Department of Physics , National University of Singapore , 2 Science Drive 3 , 117542 Singapore
| | - Xiao Chi
- Singapore Synchrotron Light Source , National University of Singapore , 5 Research Link , 117603 Singapore
| | - Yin Zhou
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , 117543 Singapore
- National University of Singapore (Suzhou) Research Institute , 377 Lin Quan Street , Suzhou Industrial Park , Suzhou , Jiangsu 215123 , P. R. China
| | - Jinlin Yang
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , 117543 Singapore
- National University of Singapore (Suzhou) Research Institute , 377 Lin Quan Street , Suzhou Industrial Park , Suzhou , Jiangsu 215123 , P. R. China
| | - Xu Lian
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , 117543 Singapore
| | - Qi Zhang
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , 117543 Singapore
- National University of Singapore (Suzhou) Research Institute , 377 Lin Quan Street , Suzhou Industrial Park , Suzhou , Jiangsu 215123 , P. R. China
| | - Wenhao Dong
- Advanced Energy Storage Materials and Devices Lab, School of Physics and Electronic-Electrical Engineering , Ningxia University , Yinchuan 750021 , P. R. China
| | - Wei Chen
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , 117543 Singapore
- National University of Singapore (Suzhou) Research Institute , 377 Lin Quan Street , Suzhou Industrial Park , Suzhou , Jiangsu 215123 , P. R. China
- Department of Physics , National University of Singapore , 2 Science Drive 3 , 117542 Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University , Binhai New City, Fuzhou 350207 , P. R. China
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