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Ye J, Gao X, Wang Z, An J, Wang Y, Liu Q, Kong Z, Qi J, Wang Z, Li W, Song J, Xia G. Difunctional Ag nanoparticles with high lithiophilic and conductive decorate on core-shell SiO 2 nanospheres for dendrite-free lithium metal anodes. J Colloid Interface Sci 2024; 659:21-30. [PMID: 38157723 DOI: 10.1016/j.jcis.2023.12.131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 12/10/2023] [Accepted: 12/19/2023] [Indexed: 01/03/2024]
Abstract
Lithium metal is an attractive and promising anode material due to its high energy density and low working potential. However, the uncontrolled growth of lithium dendrites during repeated plating and stripping processes hinders the practical application of lithium metal batteries, leading to low Coulombic efficiency, poor lifespan, and safety concerns. In this study, we synthesized highly lithiophilic and conductive Ag nanoparticles decorated on SiO2 nanospheres to construct an optimized lithium host for promoting uniform Li deposition. The Ag nanoparticles not only act as lithiophilic sites but also provide high electrical conductivity to the Ag@SiO2@Ag anode. Additionally, the SiO2 layer serves as a lithiophilic nucleation agent, ensuring homogeneous lithium deposition and suppressing the growth of lithium dendrites. Theoretical calculations further confirm that the combination of Ag nanoparticles and SiO2 effectively enhances the adsorption ability of Ag@SiO2@Ag with Li+ ions compared to pure Ag and SiO2 materials. As a result, the Ag@SiO2@Ag coating, with its balanced lithiophilicity and conductivity, demonstrates excellent electrochemical performance, including high Coulombic efficiency, low polarization voltage, and long cycle life. In a full lithium metal cell with LiFePO4 cathode, the Ag@SiO2@Ag anode exhibits a high capacity of 133.1 and 121.4 mAh/g after 200 cycles at rates of 0.5 and 1C, respectively. These results highlight the synergistic coupling of lithiophilicity and conductivity in the Ag@SiO2@Ag coating, providing valuable insights into the field of lithiophilic chemistry and its potential for achieving high-performance batteries in the next generation.
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Affiliation(s)
- Jiajia Ye
- School of Chemical and Biological Engineering, Qilu Institute of Technology, Jinan 250200, China.
| | - Xing Gao
- School of Chemical and Biological Engineering, Qilu Institute of Technology, Jinan 250200, China
| | - Zifan Wang
- School of Chemical and Biological Engineering, Qilu Institute of Technology, Jinan 250200, China
| | - Juan An
- School of Chemical and Biological Engineering, Qilu Institute of Technology, Jinan 250200, China
| | - Ying Wang
- School of Chemical and Biological Engineering, Qilu Institute of Technology, Jinan 250200, China
| | - Qingli Liu
- School of Chemical and Biological Engineering, Qilu Institute of Technology, Jinan 250200, China
| | - Zhen Kong
- School of Chemical and Biological Engineering, Qilu Institute of Technology, Jinan 250200, China
| | - Jiaxu Qi
- School of Chemical and Biological Engineering, Qilu Institute of Technology, Jinan 250200, China
| | - Zhao Wang
- School of Chemical and Biological Engineering, Qilu Institute of Technology, Jinan 250200, China
| | - Wensi Li
- School of Chemical and Biological Engineering, Qilu Institute of Technology, Jinan 250200, China
| | - Jibin Song
- College of Chemistry, Beijing University of Chemical Technology, Beijing 10010, China.
| | - Guang Xia
- i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou 215123, Jiangsu, China.
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Jiang Z, Meng C, Chen G, Yuan R, Li A, Zhou J, Chen X, Song H. Lithiophilic onion-like carbon spheres as lithium metal uniform deposition host. J Colloid Interface Sci 2022; 627:783-792. [PMID: 35878467 DOI: 10.1016/j.jcis.2022.07.054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/23/2022] [Accepted: 07/09/2022] [Indexed: 11/26/2022]
Abstract
Lithium metal is considered as a promising anode material for next-generation secondary batteries, owing to its high theoretical specific capacity (3860 mA h g-1). Nevertheless, the practical application of Li in lithium metal batteries (LMBs) is hampered by inhomogeneous Li deposition and irreversible "dead Li", which lead to low coulombic efficiency (CE) and safe hazards. Designing unique lithiophilic structure is an efficient strategy to control Li uniformly plating /stripping. Here, we report the silver (Ag) nanoparticles coated with nitrogen-doped onion-like carbon microspheres (Ag@NCS) as a host to reduce the nucleation overpotential of Li for dendrite-free LBMs. The Ag@NCS were prepared by a simple one-step injection pyrolysis. The lithiophilic Ag is demonstrated to be priority selective deposition of Li in the carbon cage. Meanwhile, the onion-like structure benefits to uniform lithium nucleation and dendrite-free lithium during cycling. Impressively, we successfully captured lithium metal on different hosts at atomic scale, further proving that Ag@NCS can effectively and uniformly deposit Li. Besides, Ag@NCS show a superiorly electrochemical performance with a low nucleation overpotential (∼1 mV), high CE and stable cycling performance (over 400 cycles at 0.5 mA cm-2) compared to the Ag-free onion-like carbon in LMBs. Even under harsh conditions (1 mA cm-2, 4 mA h cm-2), Ag@NCS still present superior cycling stability for more than 150 cycles. Furthermore, a full cell composed of LiFePO4 cathode exhibits significantly improved voltage hysteresis with low voltage polarization. This work provides a new choice and route for the design and preparation of lithiophilic host materials.
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Affiliation(s)
- Zipeng Jiang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Chenyang Meng
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Guanyu Chen
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Renlu Yuan
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Ang Li
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Jisheng Zhou
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Xiaohong Chen
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Huaihe Song
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, PR China.
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