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Huang R, Zhai Z, Chen X, Liang X, Yu T, Yang Y, Li B, Yin S. Constructing Built-In Electric Field in NiCo 2O 4-CeO 2 Heterostructures to Regulate Li 2O 2 Formation Routes at High Current Densities. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2310808. [PMID: 38386193 DOI: 10.1002/smll.202310808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 02/03/2024] [Indexed: 02/23/2024]
Abstract
Developing catalysts with suitable adsorption energy for oxygen-containing intermediates and elucidating their internal structure-performance relationships are essential for the commercialization of Li-O2 batteries (LOBs), especially under high current densities. Herein, NiCo2O4-CeO2 heterostructure with a spontaneous built-in electric field (BIEF) is designed and utilized as a cathode catalyst for LOBs at high current density. The driving mechanism of electron pumping/accumulation at heterointerface is studied via experiments and density functional theory (DFT) calculations, elucidating the growth mechanism of discharge products. The results show that BIEF induced by work function difference optimizes the affinity for LiO2 and promotes the formation of nano-flocculent Li2O2, thus improving LOBs performance at high current density. Specifically, NiCo2O4-CeO2 cathode exhibits a large discharge capacity (9546 mAh g-1 at 4000 mA g-1) and high stability (>430 cycles at 4000 mA g-1), which are better than the majority of previously reported metal-based catalysts. This work provides a new method for tuning the nucleation and decomposition of Li2O2 and inspires the design of ideal catalysts for LOBs to operate at high current density.
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Affiliation(s)
- Renshu Huang
- School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi University, 100 Daxue Road, Nanning, 530004, China
| | - Zhixiang Zhai
- School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi University, 100 Daxue Road, Nanning, 530004, China
| | - Xingfa Chen
- School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi University, 100 Daxue Road, Nanning, 530004, China
| | - Xincheng Liang
- School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi University, 100 Daxue Road, Nanning, 530004, China
| | - Tianqi Yu
- School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi University, 100 Daxue Road, Nanning, 530004, China
| | - Yueyao Yang
- School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi University, 100 Daxue Road, Nanning, 530004, China
| | - Bin Li
- School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi University, 100 Daxue Road, Nanning, 530004, China
| | - Shibin Yin
- School of Chemistry and Chemical Engineering, Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi University, 100 Daxue Road, Nanning, 530004, China
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Lin Y, Zhang Y, Bao J, Qiu J, Guo D, Zhang S, Yuan M, Sun G, Nan C. Terephthalic Acid Intercalated CoNi-LDH Materials for Improved Li-O 2 Battery. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302979. [PMID: 37528713 DOI: 10.1002/smll.202302979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 07/03/2023] [Indexed: 08/03/2023]
Abstract
CoNi-LDH (layered CoNi double hydroxides) hollow nanocages with specific morphology are obtained by Ni ion etching of ZIF-67 (Zeolitic imidazolate framework-67). The structure of the layered materials is further modified by molecular intercalation. The original interlayer anions are replaced by the ion exchange effect of terephthalic acid, which helps to increase the interlayer distance of the material. The intercalated cage-like structures not only benefit for the storage of oxygen, and the discharge product reaction, but also have more support between the material layers. The experimental results show that the excessive use of intercalation agent will affect structural stability of the intercalated CoNi-LDH. By adjusting the amount of terephthalic acid, the intercalated CoNi-LDH-2 (with 0.02 mmol terephthalic acid intercalated) is not easy to collapse after 209 cycles and shows the best electrochemical performance in Li-O2 battery.
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Affiliation(s)
- Yuran Lin
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Yu Zhang
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Jindi Bao
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Jiachen Qiu
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Donghua Guo
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Shuting Zhang
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Mengwei Yuan
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Genban Sun
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Caiyun Nan
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, China
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Qiu Q, Long J, Yao P, Wang J, Li X, Pan ZZ, Zhao Y, Li Y. Cathode electrocatalyst in aprotic lithium oxygen (Li-O2) battery: A literature survey. Catal Today 2023. [DOI: 10.1016/j.cattod.2023.114138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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Zheng J, Zhang W, Wang R, Wang J, Zhai Y, Liu X. Single-Atom Pd-N 4 Catalysis for Stable Low-Overpotential Lithium-Oxygen Battery. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2204559. [PMID: 36581502 DOI: 10.1002/smll.202204559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 11/28/2022] [Indexed: 06/17/2023]
Abstract
The critical challenge for Li-O2 batteries lies in the large charge overpotential, leading to undesirable side reactions and inferior cycle stability. Single-atom catalysts have shown promising prospects in expediting the kinetics of oxygen evolution reaction (OER) for Li-O2 batteries. However, a present practical drawback is the limited understanding of the correlation between the unique atomic structures and the OER mechanism. Herein, a template-assisted strategy is reported to synthesize atomically dispersed Pd anchored on N-doped carbon spheres as cathode catalysts. Benefiting from the well-defined Pd-N4 moiety, the morphology and distribution of Li2 O2 products are distinctly regulated with optimized decomposition reversibility. Theoretical simulations reveal that the unique configuration of Pd-N4 will contribute to the electron transfer from Pd atoms to the adjacent N atoms, which turns the originally electroneutral Pd into positively charged and downshifts the d-band center and therefore weakens its adsorption energy with the intermediates. The Li-O2 batteries with Pd SAs/NC cathode achieve a charge overpotential of only 0.24 V and sustainable low-overpotential cycling stability (500 mA g-1 ), and can retain a low charge voltage to a very high capacity of 10 000 mAh g-1 . This work provides some insights into designing efficient single-atom catalysts for stable low-overpotential Li-O2 batteries.
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Affiliation(s)
- Jian Zheng
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Wenjing Zhang
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Ruoyu Wang
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Junkai Wang
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yanwu Zhai
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xiangfeng Liu
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing, 100190, China
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Interfacially engineered induced nickel-based heterostructures as efficient catalysts for Li-O2 batteries. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2022.141476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Kang S, Li S, Xiao X, Zhang Z, Shi Y, Zhao M, Wang Y. Porous MCo 2O 4(M = Zn, Cu, Fe, Mn) as high efficient bi-functional catalysts for oxygen reduction and oxygen evolution reaction. NANOTECHNOLOGY 2022; 33:455705. [PMID: 35914509 DOI: 10.1088/1361-6528/ac85c3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
High-efficiency bi-functional electrocatalysts with long-term stability are critical to the development of many kinds of fuel cells, because that the performance of battery is limited by the slow kinetics of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). In this work, porous MCo2O4(M = Zn, Cu, Fe, Mn) were prepared by hydrothermal method with NH4F and urea as surfactants. FeCo2O4with porous structure has more oxygen defects and the larger specific surface area than other MCo2O4(M = Zn, Cu, Mn), and it not onlysupplies more active sites but also avails the transmission of electrolyte and O2in the process of ORR and OER in 0.1 M KOH aqueous solution. Porous FeCo2O4electrode material produces less intermediate H2O2, and its ORR is mainly controlled by a 4e-reaction path. Compared with commercial Pt/C, the prepared FeCo2O4has comparable ORR activity and excellent OER activity. At the same time, the stability of FeCo2O4to ORR is significantly higher than that of commercial Pt/C. The porous FeCo2O4was prepared by facile synthesis procedure could be a potential promising bi-functional catalyst due to its high electrocatalytic activities and long-term stability for both the ORR and OER.
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Affiliation(s)
- Shengkai Kang
- School of Materials and Energy, Yunnan University, 650091 Kunming, People's Republic of China
| | - Sirong Li
- School of Materials and Energy, Yunnan University, 650091 Kunming, People's Republic of China
| | - Xuechun Xiao
- School of Materials and Energy, Yunnan University, 650091 Kunming, People's Republic of China
- National Center for International Research on Photoelectric and Energy Materials, Yunnan University, 650091 Kunming, People's Republic of China
| | - Zhanyu Zhang
- School of Materials and Energy, Yunnan University, 650091 Kunming, People's Republic of China
| | - Yang Shi
- School of Materials and Energy, Yunnan University, 650091 Kunming, People's Republic of China
| | - Mengyao Zhao
- School of Materials and Energy, Yunnan University, 650091 Kunming, People's Republic of China
| | - Yude Wang
- Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon Technologies, Yunnan University, 650504 Kunming, People's Republic of China
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