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Zheng L, Zhu Z, Kuai Y, Chen G, Yu Z, Wang Y, Li A. Elevating Lithium-Sulfur Battery Durability through Samarium Oxide/Ketjen Black Modified Separator. Chemistry 2024; 30:e202303500. [PMID: 38165010 DOI: 10.1002/chem.202303500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 01/01/2024] [Accepted: 01/02/2024] [Indexed: 01/03/2024]
Abstract
Lithium-sulfur batteries have garnered significant attention as a promising next-generation battery technology due to their potential for high energy density. However, their practical application is hampered by slow reaction kinetics and the shuttle effect of lithium polysulfide intermediates. In this context, the authors introduce a pioneering solution in the form of a novel porous carbon nanostructure modified with samarium oxide, denoted as Sm2O3/KB. The material has a highly polar surface, allowing lithium polysulfide to be chemisorbed efficiently. The unsaturated sites provided by the oxygen vacancies of Sm2O3 promote Li2S nucleation, lowering the reaction energy barrier and accelerating Li2S dissolution. The porous structure of Ketjen Black provides a highly conductive channel for electron transport and effectively traps polysulfides. Meanwhile, the batteries with Sm2O3/KB/PP spacers exhibited remarkable electrochemical performances, including a low-capacity decay rate of only 0.046 % for 1000 cycles at 2 C and an excellent multiplicative performance of 624 mAh g-1 at 3 C. This work opens up a new avenue for the potential use of rare-earth-based materials in lithium-sulfur batteries.
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Affiliation(s)
- Liyuan Zheng
- School of Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Zhijun Zhu
- School of Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Yutong Kuai
- School of Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Guihuan Chen
- School of Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Zhihong Yu
- School of Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Yi Wang
- Department of Mechanic and Electronic Engineering, Zhongkai University of Agriculture and Engineering Guangzhou, Guangzhou, 510225, China
| | - Aiju Li
- School of Chemistry, South China Normal University, Guangzhou, 510006, China
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Wan S, Shah MAKY, Wang H, Lund PD, Zhu B. Exceptionally high proton conductivity in Eu 2O 3 by proton-coupled electron transfer mechanism. iScience 2024; 27:108612. [PMID: 38179065 PMCID: PMC10765062 DOI: 10.1016/j.isci.2023.108612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/22/2023] [Accepted: 11/29/2023] [Indexed: 01/06/2024] Open
Abstract
Proton conductors are typically developed by doping to introduce structural defects such as oxygen vacancies to facilitate ionic transport through structural bulk conduction mechanism. In this study, we present a novel electrochemical proton injection method via an in situ fuel cell process, demonstrating proton conduction in europium oxide (Eu2O3) through a surficial conduction mechanism for the first time. By tuning Eu2O3 into a protonated form, H-Eu2O3, we achieved an exceptionally high proton conductivity of 0.16 S cm-1. Distribution of relaxation time (DRT) analysis was employed to investigate the proton transport behavior and reveal the significant contribution of surface proton transport to the overall conductivity of Eu2O3. Remarkably, H-Eu2O3 exhibited a low activation energy for ionic transport, comparable to the best ceramic electrolytes available. The proton-coupled electron transfer (PCET) mechanism describes this novel surficial proton conduction mechanism. These findings provide new possibilities for developing advanced proton conductors with improved performance.
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Affiliation(s)
- Shuo Wan
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/ Energy Storage Joint Research Center, School of Energy & Environment, Southeast University, Nanjing 210096, China
| | - M. A. K. Yousaf Shah
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/ Energy Storage Joint Research Center, School of Energy & Environment, Southeast University, Nanjing 210096, China
| | - Hao Wang
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/ Energy Storage Joint Research Center, School of Energy & Environment, Southeast University, Nanjing 210096, China
| | - Peter D. Lund
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/ Energy Storage Joint Research Center, School of Energy & Environment, Southeast University, Nanjing 210096, China
- School of Science, Aalto University, P.O. Box 15100, 00076 Aalto, Espoo, Finland
| | - Bin Zhu
- Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/ Energy Storage Joint Research Center, School of Energy & Environment, Southeast University, Nanjing 210096, China
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Li MT, Chen J, Ren K, Li XH, Gao HY, Sun DQ, Yu Y. Nitrogen and titanium-codoped porous carbon nanocomposites derived from metal-organic framework as cathode to address polysulfides shuttle effects by Ti-assisted N-inhibiting strategy. RSC Adv 2022; 12:35923-35928. [PMID: 36545062 PMCID: PMC9752428 DOI: 10.1039/d2ra06372g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022] Open
Abstract
To address the problem of shutting effect of Li-S batteries, we used Ti-based MOF as precursor to obtain a conductive matrix with dual inhibitors. The target material, namely NTiPC, shown remarkable discharge capacity with 1178 mA h g-1, and maintained at 732 mA h g-1 after 100 cycles. The results indicated the N- and Ti-active sites synergistic acted with conductive framework can facilitate binding reaction between matrix and polysulfides.
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Affiliation(s)
- Meng-Ting Li
- College of Chemistry and Chemical Engineering, Qufu Normal UniversityQufu273165People's Republic of China,Shandong Sacred Sun Power Sources Co., LtdNo. 1, Shengyang RoadQufuShandong 273100China
| | - Jun Chen
- College of Chemistry and Chemical Engineering, Qufu Normal UniversityQufu273165People's Republic of China
| | - Ke Ren
- College of Chemistry and Chemical Engineering, Qufu Normal UniversityQufu273165People's Republic of China
| | - Xian-Hong Li
- College of Chemistry and Chemical Engineering, Qufu Normal UniversityQufu273165People's Republic of China
| | - Hai-Yang Gao
- College of Chemistry and Chemical Engineering, Qufu Normal UniversityQufu273165People's Republic of China
| | - Da-Qiang Sun
- Shandong Sacred Sun Power Sources Co., LtdNo. 1, Shengyang RoadQufuShandong 273100China
| | - Yang Yu
- College of Chemistry and Chemical Engineering, Qufu Normal UniversityQufu273165People's Republic of China
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Zhang BW, Sun B, Fu P, Liu F, Zhu C, Xu BM, Pan Y, Chen C. A Review of the Application of Modified Separators in Inhibiting the "shuttle effect" of Lithium-Sulfur Batteries. MEMBRANES 2022; 12:membranes12080790. [PMID: 36005705 PMCID: PMC9413873 DOI: 10.3390/membranes12080790] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 08/09/2022] [Accepted: 08/10/2022] [Indexed: 05/29/2023]
Abstract
Lithium-sulfur batteries with high theoretical specific capacity and high energy density are considered to be one of the most promising energy storage devices. However, the "shuttle effect" caused by the soluble polysulphide intermediates migrating back and forth between the positive and negative electrodes significantly reduces the active substance content of the battery and hinders the commercial applications of lithium-sulfur batteries. The separator being far from the electrochemical reaction interface and in close contact with the electrode poses an important barrier to polysulfide shuttle. Therefore, the electrochemical performance including coulombic efficiency and cycle stability of lithium-sulfur batteries can be effectively improved by rationally designing the separator. In this paper, the research progress of the modification of lithium-sulfur battery separators is reviewed from the perspectives of adsorption effect, electrostatic effect, and steric hindrance effect, and a novel modification of the lithium-sulfur battery separator is prospected.
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Affiliation(s)
- Bo-Wen Zhang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China
| | - Bo Sun
- Shandong Zhongsheng Pharmaceutical Equipment Co., Ltd., Yantai 264010, China
| | - Pei Fu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China
| | - Feng Liu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China
| | - Chen Zhu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China
| | - Bao-Ming Xu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China
| | - Yong Pan
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China
| | - Chi Chen
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China
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Peng L, Zhang M, Zheng L, Yuan Q, Yu Z, Shen J, Chang Y, Wang Y, Li A. Regulated Li 2 S Deposition toward Rapid Kinetics Li-S Batteries by a Separator Modified by CeO 2 -Decorated Porous Carbon Nanostructure. SMALL METHODS 2022; 6:e2200332. [PMID: 35689308 DOI: 10.1002/smtd.202200332] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 05/08/2022] [Indexed: 06/15/2023]
Abstract
Although the high-energy-density lithium sulfur (Li-S) battery has been considered one of the most promising next-generation energy storage technology, the practical applications have been plagued by the sluggish reaction kinetics and the shuttle effect of lithium polysulfides intermediates. Here, to address the above issues, the authors report a novel separator modified by CeO2 -decorated porous carbon nanostructure (CeO2 /KB/PP). Benefiting from the strong polar surface and large specific surface area, (CeO2 -doped Ketjen Black) delivers efficient chemical adsorption toward lithium polysulfides. Moreover, rich oxygen vacancies of CeO2 provide abundant active sites to expedite lithium polysulfides conversion and regulate deposition and nucleation of Li2 S. Taking advantage of these merits, the battery with the CeO2 /KB/PP separator exhibits remarkable electrochemical performance, including low-capacity decay of only 0.06% per cycle over 1000 cycles at 2 C and superior rate capability of 627 mAh g-1 at 3 C. Even with a high sulfur loading of 6.6 mg cm-2 , the battery can achieve a high areal capacity of 3.6 mAh cm-2 after 100 cycles. This work provides a new application of rare-earth-based materials to facilitate Li-S batteries.
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Affiliation(s)
- Lin Peng
- School of Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Mingkun Zhang
- School of Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Liyuan Zheng
- School of Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Qichong Yuan
- School of Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Zhanjiang Yu
- School of Environment, South China Normal University, Guangzhou, 510006, China
| | - Junhao Shen
- School of Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Yu Chang
- School of Environment, South China Normal University, Guangzhou, 510006, China
| | - Yi Wang
- Department of Mechanic and Electronic Engineering, Zhongkai University of Agriculture and Engineering Guangzhou, Guangzhou, 510225, China
| | - Aiju Li
- School of Chemistry, South China Normal University, Guangzhou, 510006, China
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