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Crystal reconstruction of V2O3/carbon heterointerfaces via anodic hydration for ultrafast and reversible Mg-ion battery cathodes

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InfoMat 2024年第3期6卷 95-107页

作者： Gun Jang Yun Sang Joe Sang Joon Lee Hyun Gyu Cho Sang Ha Baek peixun xiong Kang Ho Shin Jeong Seok Yeon Min Su Kang Si Hyoung Oh Ho Seok Park School of Chemical Engineering Sungkyunkwan University(SKKU)SuwonRepublic of Korea Advanced Batteries Research Center Korea Electronics Technology InstituteSeongnamRepublic of Korea Korea Institute of Science and Technology SeoulRepublic of Korea SKKU Advanced Institute of Nano Technology(SAINT) Sungkyunkwan UniversitySuwonRepublic of Korea Department of Health Sciences and Technology Samsung Advanced Institute for Health Sciences and Technology(SAIHST)Sungkyunkwan UniversitySuwonRepublic of Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan UniversitySuwonRepublic of Korea

Magnesium-ion batteries(MIBs)have promising applications because of their high theoretical capacity and the natural abundance of magnesium ***,the kinetic performance and cyclic stability of cathode materials are limited by the strong interactions between Mg ions and the crystal ***,we demonstrate the unique Mg^(2+)-ion storage mechanism of a hierarchical accordion-like vanadium oxide/carbon heterointerface(V2O3@C),where the V2O3 crystalline structure is reconstructed into a MgV_(3)O_(7)·H_(2)O phase through an anodic hydration reaction upon first cycle,for the improved kinetic and cyclic *** verified by in situ/ex situ spectroscopic and electrochemical analyses,the fast charge transfer kinetics of the V2O3@C cathode were due to the crystal-reconstruction and chemically coupled *** V2O3@C demonstrated an ultrahigh rate capacity of 130.4 mAh g^(-1)at 50000 mA g^(-1)and 1000 cycles,achieving a Coulombic efficiency of 99.6%.The high capacity of 381.0 mA h g^(-1)can be attributed to the reversible Mg^(2+)-ion intercalation mechanism observed in the MgV_(3)O_(7)·H_(2)O phase using a 0.3 M Mg(TFSI)2/ACN(H_(2)O)***,within the voltage range of 2.25 V versus Mg/Mg^(2+),the V2O3@C exhibited a capacity of 245.1 mAh g^(-1)when evaluated with magnesium metal in a 0.3 M Mg(TFSI)^(2+)0.25 M MgCl_(2)/DME *** research findings have important implications for understanding the relationship between the Mg-ion storage mechanism and reconstructed crystal phase of vanadium oxides as well as the heterointerface reconstruction for the rational design of MIB cathode materials.

关键词： anodic hydration reaction magnesium ion battery nano crystal vanadium oxide

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A class of Ga-Al-P-based compounds with disordered lattice as advanced anode materials for Li-ion batteries

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Journal of Energy Chemistry 2023年第4期79卷 12-21页

作者： Yanhong Li peixun xiong Lei Zhang Songliu Yuan Wenwu Li School of Physics Huazhong University of Science and TechnologyWuhan 430074HubeiChina School of Chemical Engineering Sungkyunkwan University2066Seobu-roJangan-guSuwon 440-746Republic of Korea School of Materials Science&Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

Phosphides possess large reversible capacity, small voltage hysteresis, and high energy efficiency, thus promising to be new anode candidates to replace commercial graphite for Li-ion batteries(LIBs).Through a facile mechanochemistry method, we prepare a novel ternary phosphide of Ga0.5Al0.5P whose crystalline structure is determined to be a cation-disordered cubic zinc sulfide structure according to XRD refinement. As an anode for LIBs, the Ga0.5Al0.5P delivers a reversible capacity of 1,352 mA h g^(-1)at100 mA g^(-1)with an initial Coulombic efficiency(ICE) up to 90.0% based on a reversible Li-storage mechanism integrating intercalation and subsequent conversion processes as confirmed by various characterizations techniques including in-situ XRD, ex-situ Raman, and XPS and electrochemical ***-modified Ga0.5Al0.5P exhibits a long-lasting cycling stability of retaining 1,182 mA h g^(-1)after300 cycles at 100 m A g^(-1), and 625 mA h g^(-1)after 800 cycles at 2,000 mA g^(-1), and a high-rate performance of remaining 342 m A h g^(-1)at 20,000 mA g^(-1). The outstanding electrochemical performances can be attributed to enhanced reaction kinetics enabled by the capacitive behaviors and the faster Liion diffusion enabled by the cation-mixing. Importantly, by tuning the cationic ratio, we develop a novel series of cation-mixed compounds of Ga_(1/3)Al_(2/3)P, Ga_(1/4)Al_(3/4)P, Ga_(1/5)Al_(4/5)P, Ga_(2/3)Al_(1/3)P, Ga_(3/4)Al_(1/4)P, and Ga_(4/5)Al_(1/5)P, which demonstrate large capacity, high ICE, and suitable anode potentials. Broadly, these compounds with disordered lattices probably present novel physicochemical properties, and high electrochemical performances, thus providing a new perspective for new materials design.

关键词： Multinary phosphides Disordered lattice Anode Li-ion batteries

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Two-Dimensional Pseudocapacitive Nanomaterials for High-Energy-and High-Power-Oriented Applications of Supercapacitors

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Accounts of Materials Research 2021年第2期2卷 86-96页

作者： Puritut Nakhanivej Qingyun Dou peixun xiong Ho Seok Park School of Chemical Engineering College of EngineeringSungkyunkwan UniversitySuwon-siGyeonggi-do 440-746Republic of Korea School of Chemical Engineering College of Engineering and SKKU Advanced Institute of Nanotechnology(SAINT)College of Engineering

CONSPECTUS:Supercapacitors(SCs)are electrochemical energy storage devices that can fill the gap between batteries and electrolytic ***,the widespread applications of commercialized carbon-based SCs are limited by their energy density,arising from their physical charge storage mechanism,which is by far lower than that of ***,the highpowered applications of SCs are also limited by their kinetics,which are slower than those of electrolytic capacitor due to the diffusion and distribution of ions onto the tortuous porous ***,the energy and power performance of SCs need to be improved to open or further extend their practical *** all atoms of two-dimensional(2D)nanomaterials are located on the surface,the design of surface structure is critical to determining the bulk electrochemical *** a surface-oriented property of 2D nanomaterials is well fitted to control the surface charge storage mechanism of SCs,thereby discovering emerging capacitive materials through the rational design of surface chemistry and multiscale *** Account discusses our recent progress on 2D pseudocapacitive materials for high-energyand high-power-oriented SCs applications and provides our perspective into the rational design of the microstructure,multiscale architecture,and surface *** of 2D nanomaterials include heteroatom-doped graphene,black phosphorus,transition-metal dichalcogenides,and transition-metal carbide/nitrides(MXene).We also highlight the in-depth spectroelectrochemical and computational analyses that can correlate the structures and chemistries of 2D nanomaterials with their charge storage/transport/transfer *** this Account,our design concept of 2D nanomaterials is based on two aspects of charge storage capability and kinetics that can determine the thermodynamic(capacitance)and kinetic(rate)***,chemical strategies,such as atomic incorporation,surface functionaliz

关键词： carbide microstructure kinetics

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A redox-active conjugated microporous polymer cathode for highperformance lithium/potassium-organic batteries

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Science China Chemistry 2021年第1期64卷 72-81页

作者： Lian-Wei Luo Chong Zhang peixun xiong Yongbo Zhao Wenyan Ma Yu Chen Jing Hui Zeng Yunhua Xu Jia-Xing Jiang Key Laboratory for Macromolecular Science of Shaanxi Province Shaanxi Engineering Laboratory for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi'an 710062China Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education Tianjin Key Laboratory of Composite and Functional MaterialsSchool of Materials Science and EngineeringTianjin UniversityTianjin 300072China

Organic redox-active materials have emerged as a class of electrode materials for rechargeable batteries due to their high redox activity,low cost,structure diversity and ***,the high solubility of organic small molecules in organic electrolytes commonly leads to the fast capacity decay with ***,we report a redox-active conjugated microporous polymer of poly(pyrene-co-anthraquinone)(Py Aq)cathode material consisting of pyrene and anthraquinone *** from the highly cross-linked polymer structure with insoluble nature in organic electrolytes,the high surface area and the plentiful redox-active carbonyl groups,the Py Aq cathode demonstrates outstanding electrochemical performances for both lithium-ion batteries(LIBs)and potassium-ion batteries(KIBs).Specifically,the Py Aq cathode for LIBs delivers a high reversible capacity of 169 m Ah g^-1 at the current density of 20 m A g^-1,a high rate capability(142 m Ah g^-1 at 1000 m A g^-1)and an excellent cycling stability for 4000 ***,the Py Aq cathode for KIBs also exhibits a high reversible capacity of143 m Ah g^-1 with a long cycling life over 800 *** excellent electrochemical performance demonstrates that the newly developed Py Aq could be an attractive cathode material for the advanced energy storage technologies.

关键词： conjugated microporous polymers anthraquinone organic cathode material lithium-ion battery potassium-ion battery

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Extraordinarily stable and wide-temperature range sodium/potassium-ion batteries based on 1D SnSe2-SePAN composite nanofibers

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InfoMat 2023年第9期5卷 38-50页

作者： Yiyi Wang Fuyu Xiao Xi Chen peixun xiong Chuyuan Lin Hong-En Wang Mingdeng Wei Qingrong Qian Qinghua Chen Lingxing Zeng Engineering Research Center of Polymer Green Recycling of Ministry of Education College of Carbon Neutral Modern IndustryFujian Normal UniversityFuzhouthe People's Republic of China Universitéde Picardie Jules Verne Laboratoire de Réactivitéet Chimie des Solides(LRCS)AmiensFrance Inorganic Chemistry I Technische Universität DresdenDresdenGermany College of Physics and Electronics Information Yunnan Key Laboratory of Optoelectronic Information TechnologyYunnan Normal UniversityKunmingthe People's Republic of China Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials Fuzhou UniversityFuzhouthe People's Republic of China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjinthe People's Republic of China

Developing electrodes with long lifespan and wide-temperature adaptability is crucial important to achieve high-performance sodium/potassium-ion batteries(SIBs/PIBs).Herein,the SnSe2-SePAN composite was fabricated for extraordinarily stable and wide-temperature range SIBs/PIBs through a coupling strategy between controllable electrospinning and selenylation,in which SnSe2 nanoparticles were uniformly encapsulated in the SePAN *** unique structure of SnSe2-SePAN not only relieves drastic volume variation but also guarantees the structural integrity of the composite,endowing SnSe2-SePAN with excellent sodium/potassium storage ***,SnSe2-SePAN displays a high sodium storage capacity and excellent feasibility in a wide working temperature range(-15 to 60℃:300 mAh g^(-1)/700 cycles/-15℃;352 mAh g^(-1)/100 cycles/60℃at 0.5 A g^(-1)).At room temperature,it delivers a record-ultralong cycling life of 192 mAh g^(-1)that exceeds 66000 cycles even at 15 A g^(-1).It exhibits extremely superb electrochemical performance in PIBs(157 mAh g^(-1)exceeding 15000 cycles at 5 A g^(-1)).The ex situ XRD and TEM results attest the conversion-alloy mechanism of ***,computational calculations verify that SePAN takes an important role in intensifying the electrochemical performance of SnSe2-SePAN ***,this study breaks new ground on solving the polyselenide dissolution issue and improving the wide temperature workable performance of sodium/potassium storage.

关键词： anode energy storage SnSe2-SePAN composite sodium/potassium-ion batteries widetemperature range

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Electronically coupled layered double hydroxide/MXene quantum dot metallic hybrids for high-performance flexible zinc–air batteries

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InfoMat 2021年第10期3卷 1134-1144页

作者： Xiaotong Han Nannan Li peixun xiong Min Gyu Jung Yingbo Kang Qingyun Dou Qing Liu Jin Yong Lee Ho Seok Park School of Chemical Engineering Sungkyunkwan University(SKKU)SuwonRepublic of Korea Department of Chemistry Institute of Basic ScienceSungkyunkwan UniversitySuwonRepublic of Korea Department of Health Sciences and Technology Samsung Advanced Institute for Health Sciences and Technology(SAIHST)Sungkyunkwan UniversitySuwonRepublic of Korea

Precise control of the local electronic structure and properties of electrocatalysts is important for enhancing the multifunctionality and durability of electrocatalysts and for correlating the structure/chemistry with the catalytic ***,we report electronically coupled metallic hybrids of NiFe layered double hydroxide nanosheet/Ti3C2 MXene quantum dots deposited on a nitrogen-doped graphene surface(LDH/MQD/NG)for high-performance flexible Zn-air batteries(ZABs).As verified from the Mott-Schottky and Nyquist plots,as well as spectroscopic,electrochemical,and computational analyses,the electronic and chemical coupling of LDH/MQD/NG modulates the local electronic and surface structure of the active LDH to provide metallic conductivity and abundant active sites,leading to significantly improved bifunctional activity and electrocatalytic *** rechargeable ZABs with LDH/MQD/NG hybrids are superior to the previous LDH-based ZABs,demonstrating a high power density(113.8 mW cm^(-2))and excellent cycle stability(150 h at 5 mA cm^(-2)).Moreover,the corresponding quasi solid-state ZABs are completely flexible and practical,affording a high power density of 57.6 mW cm^(-2)even in the bent state,and in real-life operation of tandem cells for powering various electronic devices.

关键词： 2D quantum dots flexible battery metallic hybrids oxygen electrochemistry Zn-air battery

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Progress in Electrolyte Engineering of Aqueous Batteries in a Wide Temperature Range

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Transactions of Tianjin University 2023年第5期29卷 321-346页

作者： Lingjun He Chuyuan Lin peixun xiong Hui Lin Wenbin Lai Jingran Zhang Fuyu Xiao Liren Xiao Qingrong Qian Qinghua Chen Lingxing Zeng Engineering Research Center of Polymer Green Recycling of Ministry of Education Fujian Key Laboratory of Pollution Control and Resource ReuseCollege of Environmental and ResourcesFujian Normal UniversityFuzhou 350007China Inorganic Chemistry I Technische Universität DresdenBergstrasse 6601069 DresdenGermany College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin 300071China

Aqueous rechargeable batteries are safe and environmentally friendly and can be made at a low cost;as such,they are attracting attention in the field of energy ***,the temperature sensitivity of aqueous batteries hinders their practical *** solvent water freezes at low temperatures,and there is a reduction in ionic conductivity,whereas it evaporates rapidly at high temperatures,which causes increased side *** review discusses recent progress in improving the performance of aqueous batteries,mainly with respect to electrolyte engineering and the associated strategies employed to achieve such improvements over a wide temperature *** review focuses on fi ve electrolyte engineer-ing(aqueous high-concentration electrolytes,organic electrolytes,quasi-solid/solid electrolytes,hybrid electrolytes,and eutectic electrolytes)and investigates the mechanisms involved in reducing the solidifi cation point and boiling point of the electrolyte and enhancing the extreme-temperature electrochemical ***,the prospect of further improving the wide temperature range performance of aqueous rechargeable batteries is presented.

关键词： Aqueous batteries Electrolyte engineering Wide temperature range Hydrogen bond

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Single-Phase Ternary Compounds with a Disordered Lattice and Liquid Metal Phase for High-Performance Li-Ion Battery Anodes

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Nano-Micro Letters 2023年第5期15卷 36-50页

作者： Yanhong Li Lei Zhang Hung-Yu Yen Yucun Zhou Gun Jang Songliu Yuan Jeng-Han Wang peixun xiong Meilin Liu Ho Seok Park Wenwu Li School of Chemical Engineering Sungkyunkwan University2066Seobu-roJangan-guSuwon-SiGyeonggi-Do 440-746Korea School of Physics Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA Department of Chemistry National Taiwan Normal UniversityTaipei 11677TaiwanPeople’s Republic of China Samsung Advanced Institute for Health Sciences and Technology(SAIHST) Sungkyunkwan University2066 SeoburoJangan-guSuwon 440-746Korea SKKU Advanced Institute of Nano Technology(SAINT) Sungkyunkwan University2066 SeoburoJangan-guSuwon 440-746Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan University2066 SeoburoJangan-guSuwon 440-746Korea

Si is considered as the promising anode materials for lithium-ion batteries(LIBs)owing to their high capacities of 4200 mAh g-1and natural ***,severe electrode pulverization and poor electronic and Li-ionic conductivities hinder their practical *** resolve the afore-mentioned problems,we first demonstrate a cation-mixed disordered lattice and unique Li storage mechanism of single-phase ternary GaSiP_(2)compound,where the liquid metallic Ga and highly reactive P are incorporated into Si through a ball milling *** confirmed by experimental and theoretical analyses,the introduced Ga and P enables to achieve the stronger resistance against volume variation and metallic conductivity,respectively,while the cation-mixed lattice provides the faster Li-ionic diffusion capability than those of the parent GaP and Si *** resulting GaSiP_(2)electrodes delivered the high specific capacity of 1615 mAh g-1and high initial Coulombic efficiency of 91%,while the graphite-modified GaSiP_(2)(GaSiP_(2)@C)achieved 83%of capacity retention after 900 cycles and high-rate capacity of 800 at 10,000 mA ***,the LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)//Ga SiP_(2)@C full cells achieved the high specific capacity of 1049 mAh g-1after 100 cycles,paving a way for the rational design of high-performance LIB anode materials.

关键词： Multinary compounds Liquid metal GaSiP_(2) Disordered lattice Li-ion batteries

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MXene ink hosting zinc anode for high performance aqueous zinc metal batteries

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Journal of Energy Chemistry 2023年第1期76卷 187-194,I0005页

作者： Jae Min Park Milan Jana Sang Ha Baek Taehun Kang peixun xiong Jeong Hee Park Jun Soo Kim Ali Shayesteh Zeraati Mikhail Shekhirev Paul V.Braun Yury Gogotsi Ho Seok Park School of Chemical Engineering Sungkyunkwan University2066SeoburoJangan-guSuwon 440-746Republic of Korea Department of Chemical and Petroleum Engineering University of Calgary2500 University Dr NWCalgary T2N 1N4Canada Department of Materials Science and Engineering Materials Research LaboratoryBeckman Institute for Advanced Science and TechnologyUniversity of Ilinois at Urbana-ChampaignUrbanaIL61801USA A.J.Drexel Nanomaterials Institute and Department of Materials Science and Engineering Drexel UniversityPhiladelphiaPA 19104USA SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan University2066SeoburoJangan-guSuwon 440-746Republic of Korea SKKU Advanced Institute of Nano Technology(SAINT) Sungkyunkwan University 2066SeoburoJangan-guSuwon 440-746Republic of Korea

Despite the safety,low cost,and high theoretical capacity(820 mA h g^(-1))of Zn metal anodes,the practical application of aqueous Zn metal batteries remains a critical challenge due to the Zn dendrite growth,corrosion,and hydrogen evolution ***,we demonstrate the MXene ink hosting Zn metal anodes(MX@Zn)for high-performance and patternable Zn metal full *** as-designed MX@Zn electrode is more facile and reversible than bare Zn and CC@Zn,as verified by better cyclic stability and lower overpotentials of symmetric cells with the plating capacity of 0.05 mA h cm^(-2)at 0.1 m A cm^(-2)and of 1 m A h cm^(-2)at 1 m A cm^(-2).The MX@Zn|MnO_(2)full cells deliver a high specific capacity of 281.9 m A h g^(-1),91.5%of the theoretical capacity,achieving 50%capacity retention from 60 mA g^(-1)to 300 mA g^(-1)and 79.7%of initial capacity after 200 ***,the patterned devices based on the MX@Zn electrode achieve high energy and power densities of 348.57 Wh kg^(-1)and 1556 W kg^(-1),respectively,along with a capacity retention of 64%and Coulombic efficiency of 99%over 500 *** high performance of MX@Zn is attributed to the high electrical conductivity and hydrophilicity of MXene and rapid ion diffusion through the 3D interconnected porous channels.

关键词： MXene ink Zinc anode Metal batteries Patterning Electrodeposition

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In-situ electropolymerized bipolar organic cathode for stable and high-rate lithium-ion batteries

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Science China Materials 2021年第12期64卷 2938-2948页

作者： Wei Wang Chen Zhao Jixing Yang peixun xiong Hai Su Yunhua Xu School of Materials Science and Engineering Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education)and Tianjin Key Laboratory of Composite and Functional MaterialsTianjin UniversityTianjin 300072China

To address the dissolution issue and enhance the electrochemical performance of organic electrode materials,herein, a bipolar organic cathode was prepared by in-situ electropolymerization of amino-phenyl carbazole naphthalene diimide(APCNDI). APCNDI is composed of n-type 1,4,5,8-naphthalene tetracarboxylic diimide that stores Li cations and p-type carbazole groups which react with anions and serve as polymerization sites. Electropolymerization completely eliminated the dissolution problem of APCNDI, and the electropolymerized cathode demonstrated a bipolar reaction with excellent electrochemical performance, stable cycling performance with a capacity retention of 92 mA h g;after1000 cycles, and a superior rate performance of 72 mA h g;at 10 A g;. The bipolar feature and reactions of APCNDI were systematically investigated and verified by multiple characterization techniques. Our findings provide a novel strategy for the design and fabrication of electrodes for high-performance organic batteries.

关键词： lithium-ion battery bipolar organic cathode in-situ electropolymerization polyimide carbazole

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