1
|
Abusa Y, Yox P, Cady SD, Viswanathan G, Opare-Addo J, Smith EA, Mudryk Y, Lebedev OI, Perras FA, Kovnir K. Make Selenium Reactive Again: Activating Elemental Selenium for Synthesis of Metal Selenides Ranging from Nanocrystals to Large Single Crystals. J Am Chem Soc 2023; 145:22762-22775. [PMID: 37813388 DOI: 10.1021/jacs.3c08637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
The inertness of elemental selenium is a significant obstacle in the synthesis of selenium-containing materials at low reaction temperatures. Over the years, several recipes have been developed to overcome this hurdle; however, most of the methods are associated with the use of highly toxic, expensive, and environmentally harmful reagents. As such, there is an increasing demand for the design of cheap, stable, and nontoxic reactive selenium precursors usable in the low-temperature synthesis of transition metal selenides with vast applications in nanotechnology, thermoelectrics, and superconductors. Herein, a novel synthetic route has been developed for activating elemental selenium by using a solvothermal approach. By comprehensive 77Se NMR, Raman, and infrared spectroscopies and gas chromatography-mass spectrometry, we show that the activated Se solution contained HSe-, [Se-Se]2-, and Se2- ions, as well as dialkyl selenide (R2Se) and dialkyl diselenide (R-Se-Se-R) species in dynamic equilibrium. This also corresponded to the first observation of naked Se22- in solution. The versatility of the developed Se precursor was demonstrated by the successful synthesis of (i) the polycrystalline room-temperature modification of the β-Ag2Se thermoelectric material; (ii) large single crystals of superconducting β-FeSe; (iii) CdSe nanocrystals with different particle sizes (3-10 nm); (iv) nanosheets of PtSe2; and (v) mono- and dibenzyl selenides and diselenides at room temperature. The simplicity and diversity of the developed Se activation method holds promise for applied and fundamental research.
Collapse
Affiliation(s)
- Yao Abusa
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Philip Yox
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- Ames National Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Sarah D Cady
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Gayatri Viswanathan
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- Ames National Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Jemima Opare-Addo
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- Ames National Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Emily A Smith
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- Ames National Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Yaroslav Mudryk
- Ames National Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Oleg I Lebedev
- Laboratoire CRISMAT, ENSICAEN, CNRS UMR 6508, 14050 Caen, France
| | - Frédéric A Perras
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- Ames National Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Kirill Kovnir
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- Ames National Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| |
Collapse
|
2
|
Li J, Qian C, Hu Y, Huang J, Chen G, Cao L, Wang F, Kajiyoshi K, Zhao Y, Liu Y, Li Z, Yang H, Xu Z. Tetrahedral Bonding Structure (Ni 3 -Se) Induced by Lattice-Distortion of Ni to Achieve High Catalytic Activity in Na-Se Battery. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302100. [PMID: 37330647 DOI: 10.1002/smll.202302100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 05/30/2023] [Indexed: 06/19/2023]
Abstract
Fabrication of transition-metal catalytic materials is regarded as a promising strategy for developing high-performance sodium-selenium (Na-Se) batteries. However, more systematic explorations are further demanded to find out how their bonding interactions and electronic structures can affect the Na storage process. This study finds that lattice-distorted nickel (Ni) structure can form different bonding structures with Na2 Se4 , providing high activity to catalyze the electrochemical reactions in Na-Se batteries. Using this Ni structure to prepare electrode (Se@NiSe2 /Ni/CTs) can realize rapid charge transfer and high cycle stability of the battery. The electrode exhibits high storage performance of Na+ ; i.e., 345 mAh g⁻1 at 1 C after 400 cycles, and 286.4 mAh g⁻1 at 10 C in rate performance test. Further results reveal the existence of a regulated electronic structure with upshifts of the d-band center in the distorted Ni structure. This regulation changes the interaction between Ni and Na2 Se4 to form a Ni3 -Se tetrahedral bonding structure. This bonding structure can provide higher adsorption energy of Ni to Na2 Se4 to facilitate the redox reaction of Na2 Se4 during the electrochemical process. This study can inspire the design of bonding structure with high performance in conversion-reaction-based batteries.
Collapse
Affiliation(s)
- Jiayin Li
- School of Material Science and Engineering, International S&T Cooperation Foundation of Shaanxi Province, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Cheng Qian
- School of Material Science and Engineering, International S&T Cooperation Foundation of Shaanxi Province, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Yunfei Hu
- School of Material Science and Engineering, International S&T Cooperation Foundation of Shaanxi Province, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Jianfeng Huang
- School of Material Science and Engineering, International S&T Cooperation Foundation of Shaanxi Province, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Guanjun Chen
- School of Material Science and Engineering, International S&T Cooperation Foundation of Shaanxi Province, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Liyun Cao
- School of Material Science and Engineering, International S&T Cooperation Foundation of Shaanxi Province, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Fangmin Wang
- School of Material Science and Engineering, International S&T Cooperation Foundation of Shaanxi Province, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Koji Kajiyoshi
- Kochi University, Research Laboratory of Hydrothermal Chemistry, Kochi, 780-8520, Japan
| | - Yong Zhao
- Guangdong Mona Lisa Group Co. Ltd., Foshan, Guangdong, 528211, P. R. China
| | - Yijun Liu
- Guangdong Mona Lisa Group Co. Ltd., Foshan, Guangdong, 528211, P. R. China
| | - Zhenjiang Li
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong, 266042, P. R. China
| | - Hong Yang
- Xi'an Sefu Energy Technology Co., LTD, Xi'an, P. R. China
| | - Zhanwei Xu
- School of Material Science and Engineering, International S&T Cooperation Foundation of Shaanxi Province, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| |
Collapse
|
3
|
Qin M, Qin N, Lei M, Ji D, Liu W, Cao X, Fang G, Liang S. Construction of Na3V2(PO4)2F3@C/CNTs nanocomposites with three-dimensional conductive network as cathode materials for sodium-ion batteries. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116613] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
4
|
Erdol Z, Ata A, Demir-Cakan R. Assessment on the Stable and High‐Capacity Na‐Se Batteries with Carbonate Electrolytes. ChemElectroChem 2022. [DOI: 10.1002/celc.202200465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zeynep Erdol
- Gebze Technical University: Gebze Teknik Universitesi Material Science and Engineering TURKEY
| | - Ali Ata
- Gebze Technical University: Gebze Teknik Universitesi Material Science and Engineering TURKEY
| | - Rezan Demir-Cakan
- Gebze Technical University Department of Chemical Engineering Gebze 41400 Kocaeli TURKEY
| |
Collapse
|
5
|
Liu X, Tong S, Zhang X, Jia M, Yan X. Advanced material characterization techniques for sodium‐ion battery. ASIA-PAC J CHEM ENG 2022. [DOI: 10.1002/apj.2800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Xiangyu Liu
- College of Materials Science and Engineering Jiangsu University Zhenjiang China
| | - Shuai Tong
- College of Materials Science and Engineering Jiangsu University Zhenjiang China
| | - Xiaoyu Zhang
- College of Materials Science and Engineering Jiangsu University Zhenjiang China
| | - Min Jia
- College of Materials Science and Engineering Jiangsu University Zhenjiang China
| | - Xiaohong Yan
- College of Materials Science and Engineering Jiangsu University Zhenjiang China
| |
Collapse
|
6
|
Zhang Z, Wang Z, Zhang L, Liu D, Yu C, Yan X, Xie J, Huang J. Unraveling the Conversion Evolution on Solid-State Na-SeS 2 Battery via In Situ TEM. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2200744. [PMID: 35320621 PMCID: PMC9109063 DOI: 10.1002/advs.202200744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 02/26/2022] [Indexed: 05/11/2023]
Abstract
All-solid-state (ASS) Na-S batteries are promising for a large-scale energy-storage system owing to numerous merits. However, the high conversion reaction barrier impedes their practical application. In this work, the basic mechanism on how Se catalyzes the conversion reaction in the Na-S batteries is unraveled. The sodiation/desodiation of Na-SeS2 nanobatteries are systematically evaluated via in situ transmission electron microscopy (in situ TEM) with a microheating device. The real-time analyses reveal an amorphous Na-Sex Sy intermediate phase appears during the direct conversion from SeS2 to Na2 S, and a reverse reaction succeeds at 100 °C with a prior formation of Se. The absence of polysulfides and a much lower desodiation temperature in contrast to Na-S nanobatteries demonstrate that the Se incorporation significantly lowers the conversion reaction barrier. According to these findings, the ASS SeS2 batteries using a Na3 SbS4 solid electrolyte (SE) are assembled using various SE:C ratios in the composite cathodes to investigate the effect of the ion and electron transport on the electrochemical properties, including the effective transport properties, MacMullin number, and the tortuosity factor. The obtained results in turn confirm the findings from the in situ TEM. These findings are applicable to optimize other S-based active materials and improve their utilization.
Collapse
Affiliation(s)
- Ziqi Zhang
- Clean Nano Energy CenterState Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdaoHebei066004China
| | - Zaifa Wang
- Clean Nano Energy CenterState Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdaoHebei066004China
| | - Long Zhang
- Clean Nano Energy CenterState Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdaoHebei066004China
| | - Di Liu
- Clean Nano Energy CenterState Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdaoHebei066004China
| | - Chuang Yu
- State Key Laboratory of Advanced Electromagnetic Engineering and TechnologySchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan430074P. R. China
| | - Xinlin Yan
- Institute of Solid State PhysicsVienna University of TechnologyVienna1040Austria
| | - Jia Xie
- State Key Laboratory of Advanced Electromagnetic Engineering and TechnologySchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan430074P. R. China
| | - Jianyu Huang
- Clean Nano Energy CenterState Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdaoHebei066004China
| |
Collapse
|
7
|
Hao H, Hutter T, Boyce BL, Watt J, Liu P, Mitlin D. Review of Multifunctional Separators: Stabilizing the Cathode and the Anode for Alkali (Li, Na, and K) Metal-Sulfur and Selenium Batteries. Chem Rev 2022; 122:8053-8125. [PMID: 35349271 DOI: 10.1021/acs.chemrev.1c00838] [Citation(s) in RCA: 56] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Alkali metal batteries based on lithium, sodium, and potassium anodes and sulfur-based cathodes are regarded as key for next-generation energy storage due to their high theoretical energy and potential cost effectiveness. However, metal-sulfur batteries remain challenged by several factors, including polysulfides' (PSs) dissolution, sluggish sulfur redox kinetics at the cathode, and metallic dendrite growth at the anode. Functional separators and interlayers are an innovative approach to remedying these drawbacks. Here we critically review the state-of-the-art in separators/interlayers for cathode and anode protection, covering the Li-S and the emerging Na-S and K-S systems. The approaches for improving electrochemical performance may be categorized as one or a combination of the following: Immobilization of polysulfides (cathode); catalyzing sulfur redox kinetics (cathode); introduction of protective layers to serve as an artificial solid electrolyte interphase (SEI) (anode); and combined improvement in electrolyte wetting and homogenization of ion flux (anode and cathode). It is demonstrated that while the advances in Li-S are relatively mature, less progress has been made with Na-S and K-S due to the more challenging redox chemistry at the cathode and increased electrochemical instability at the anode. Throughout these sections there is a complementary discussion of functional separators for emerging alkali metal systems based on metal-selenium and the metal-selenium sulfide. The focus then shifts to interlayers and artificial SEI/cathode electrolyte interphase (CEI) layers employed to stabilize solid-state electrolytes (SSEs) in metal-sulfur solid-state batteries (SSBs). The discussion of SSEs focuses on inorganic electrolytes based on Li- and Na-based oxides and sulfides but also touches on some hybrid systems with an inorganic matrix and a minority polymer phase. The review then moves to practical considerations for functional separators, including scaleup issues and Li-S technoeconomics. The review concludes with an outlook section, where we discuss emerging mechanics, spectroscopy, and advanced electron microscopy (e.g. cryo-transmission electron microscopy (cryo-TEM) and cryo-focused ion beam (cryo-FIB))-based approaches for analysis of functional separator structure-battery electrochemical performance interrelations. Throughout the review we identify the outstanding open scientific and technological questions while providing recommendations for future research topics.
Collapse
Affiliation(s)
- Hongchang Hao
- Materials Science and Engineering Program & Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Tanya Hutter
- Materials Science and Engineering Program & Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Brad L Boyce
- Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, New Mexico 87110, United States
| | - John Watt
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Pengcheng Liu
- Materials Science and Engineering Program & Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
| | - David Mitlin
- Materials Science and Engineering Program & Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
| |
Collapse
|
8
|
Cathode host engineering for non-lithium (Na, K and Mg) sulfur/selenium batteries: A state-of-the-art review. NANO MATERIALS SCIENCE 2022. [DOI: 10.1016/j.nanoms.2022.01.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
9
|
Huang XL, Zhang X, Yi M, Wang Y, Zhang S, Chong S, Liu HK, Dou SX, Wang Z. Trimodal hierarchical porous carbon nanorods enable high-performance Na–Se batteries. Chem Sci 2022; 13:11585-11593. [PMID: 36320390 PMCID: PMC9555568 DOI: 10.1039/d2sc04648b] [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: 08/19/2022] [Accepted: 09/12/2022] [Indexed: 11/21/2022] Open
Abstract
Technical bottlenecks of polyselenide shuttling and material volume variation significantly hamper the development of emerging sodium–selenium (Na–Se) batteries. The nanopore structure of substrate materials is demonstrated to play a vital role in stabilizing Se cathodes and approaching superior Na-ion storage properties. Herein, an ideal nanorod-like trimodal hierarchical porous carbon (THPC) host is fabricated through a facile one-step carbonization method for advanced Na–Se batteries. The THPC possesses a trimodal nanopore structure encompassing micropores, mesopores, and macropores, and functions as a good accommodator of Se molecules, a reservoir of polyselenide intermediates, a buffer for volume expansion of Se species during sodiation, and a promoter for electron/ion transfer in the electrochemical process. As a result, Na–Se batteries assembled with the Se–THPC composite cathode realize high utilization of Se, fast redox kinetics, and excellent cyclability. Furthermore, the Na-ion storage mechanism of the well-designed Se–THPC composite is profoundly revealed by in situ visual characterization techniques. Technical bottlenecks of polyselenide shuttling and material volume variation significantly hamper the development of emerging sodium–selenium (Na–Se) batteries.![]()
Collapse
Affiliation(s)
- Xiang Long Huang
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, 610054, China
| | - Xiaofeng Zhang
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, 610054, China
| | - Mingjie Yi
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Shenzhen 518055, China
| | - Ye Wang
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, 610054, China
| | - Shaohui Zhang
- Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronic Engineering, College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, China
| | - Shaokun Chong
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics, Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Hua Kun Liu
- Institute for Superconducting and Electronic Materials, University of Wollongong, North Wollongong, 2500, Australia
- Institute of Energy Materials Science, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai, 200093, China
| | - Shi Xue Dou
- Institute for Superconducting and Electronic Materials, University of Wollongong, North Wollongong, 2500, Australia
- Institute of Energy Materials Science, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai, 200093, China
| | - Zhiming Wang
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, 610054, China
- Institute for Advanced Study, Chengdu University, Chengdu 610106, P. R. China
| |
Collapse
|
10
|
Lu C, Li A, Li G, Yan Y, Zhang M, Yang Q, Zhou W, Guo L. S-Decorated Porous Ti 3 C 2 MXene Combined with In Situ Forming Cu 2 Se as Effective Shuttling Interrupter in Na-Se Batteries. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2008414. [PMID: 34242423 DOI: 10.1002/adma.202008414] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 04/22/2021] [Indexed: 06/13/2023]
Abstract
Given natural abundance of Na and superior kinetics of Se, Na-Se batteries have attracted much attention but still face the problem of shuttling effect of soluble intermediates. The first-principle calculations reveal the S-decorated Ti3 C2 exhibits increased binding energy to sodium polyselenides, suggesting a better capture and restriction on intermediates. The obtained Se@S-decorated porous Ti3 C2 (Se@S-P-Ti3 C2 ) exhibits a high reversible capacity of 765 mAh g-1 at 0.1 A g-1 (calculated based on Se), ≈1.2, 1.3, and 1.7 times of Se@porous Ti3 C2 (Se@P-Ti3 C2 ), Se@Ti3 C2 , and Se, respectively. It gives considerable capacity of 664 mAh g-1 at 20 A g-1 and impressive cycling stability over 2300 cycles with an ultralow capacity decay of 0.003% per cycle. The excellent electrochemical performance can be ascribed to the S-modified porous Ti3 C2 , which provides effective immobilization toward polyselenides, makes full use of nanosized Se, and alleviates volume expansion during sodiation/desodiation. Additionally, in situ forming Cu2 Se can generate Cu nanoparticles through discharge process and then transform polyselenides into solid-phase Cu2 Se, further suppressing the shuttling effect. This work provides a practical strategy to immobilize and transform sodium polyselenides for high-capacity and long-life Na-Se batteries.
Collapse
Affiliation(s)
- Chengxing Lu
- School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191, China
| | - Anran Li
- Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, School of Engineering Medicine, Beihang University, Beijing, 100191, China
| | - Guozheng Li
- School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191, China
| | - Yu Yan
- School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191, China
| | - Mengyang Zhang
- School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191, China
| | - Qinglin Yang
- School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191, China
| | - Wei Zhou
- School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191, China
| | - Lin Guo
- School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191, China
| |
Collapse
|
11
|
Xu R, Yao Y, Wang H, Yuan Y, Wang J, Yang H, Jiang Y, Shi P, Wu X, Peng Z, Wu ZS, Lu J, Yu Y. Unraveling the Nature of Excellent Potassium Storage in Small-Molecule Se@Peapod-Like N-Doped Carbon Nanofibers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2003879. [PMID: 33206429 DOI: 10.1002/adma.202003879] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 10/09/2020] [Indexed: 05/17/2023]
Abstract
The potassium-selenium (K-Se) battery is considered as an alternative solution for stationary energy storage because of abundant resource of K. However, the detailed mechanism of the energy storage process is yet to be unraveled. Herein, the findings in probing the working mechanism of the K-ion storage in Se cathode are reported using both experimental and computational approaches. A flexible K-Se battery is prepared by employing the small-molecule Se embedded in freestanding N -doped porous carbon nanofibers thin film (Se@NPCFs) as cathode. The reaction mechanisms are elucidated by identifying the existence of short-chain molecular Se encapsulated inside the microporous host, which transforms to K2 Se by a two-step conversion reaction via an "all-solid-state" electrochemical process in the carbonate electrolyte system. Through the whole reaction, the generation of polyselenides (K2 Sen , 3 ≤ n ≤ 8) is effectively suppressed by electrochemical reaction dominated by Se2 molecules, thus significantly enhancing the utilization of Se and effecting the voltage platform of the K-Se battery. This work offers a practical pathway to optimize the K-Se battery performance through structure engineering and manipulation of selenium chemistry for the formation of selective species and reveal its internal reaction mechanism in the carbonate electrolyte.
Collapse
Affiliation(s)
- Rui Xu
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yu Yao
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Haiyun Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yifei Yuan
- Chemical Sciences and Engineering Division, Argonne National Laboratory, 205-167A, 9700 South, Cass Ave., Lemont, IL, 60439, USA
| | - Jiawei Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
| | - Hai Yang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yu Jiang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Pengcheng Shi
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Xiaojun Wu
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Zhangquan Peng
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China
| | - Zhong-Shuai Wu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, Liaoning, 116023, China
- Dalian National Laboratory for Clean Energy (DNL), Chinese Academy of Sciences (CAS), Dalian, Liaoning, China
| | - Jun Lu
- Chemical Sciences and Engineering Division, Argonne National Laboratory, 205-167A, 9700 South, Cass Ave., Lemont, IL, 60439, USA
| | - Yan Yu
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui, 230026, China
- Dalian National Laboratory for Clean Energy (DNL), Chinese Academy of Sciences (CAS), Dalian, Liaoning, China
| |
Collapse
|
12
|
Shenderovich IG. For Whom a Puddle Is the Sea? Adsorption of Organic Guests on Hydrated MCM-41 Silica. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:11383-11392. [PMID: 32900200 DOI: 10.1021/acs.langmuir.0c02327] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Thermal and hydration effects on the mobility of compact and branched organic molecules and a bulky pharmaceutical substance loaded in submonolayer amounts onto mesoporous silica have been elucidated using 1H and 31P solid-state NMR. In all cases, the ambient hydration has a stronger effect than an increase in temperature to 370 K for water-free silica. The effect of hydration depends on the guest and ranges from complete solvation to a silica-water-guest sandwich structure to a silica-guest/silica-water pattern. The mobility of the guests under different conditions has been described. The specific structure of the MCM-41 surface allows one to study very slow surface diffusion, a diffusivity of about 10-15-10-16 m2/s. The data reported are relevant to any nonfunctionalized silica, while the method used is applicable to any phosphor-containing guest on any host.
Collapse
Affiliation(s)
- Ilya G Shenderovich
- Institute of Organic Chemistry, University of Regensburg, Universitaetstrasse 31, 93053 Regensburg, Germany
| |
Collapse
|