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Enhanced potassium storage of carbon nanofibers as binderfree anodes enabled by coupling ultra-small amorphous Sb_(2)O_(3),graphene modification and sulfur doping

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Rare Metals 2024年第1期43卷 51-64页

作者： Zhao Huang Yu-Kang Lou Lin Peng Yuan Peng Meng-Meng Wang Ming Zhang College of Railway Transportation Hunan University of TechnologyZhuzhou 412007China College of Semiconductors(College of Integrated Circuits) Changsha Semiconductor Technology and Application Innovation Research InstituteHunan UniversityChangsha 410082China Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education College of Semiconductors(College of Integrated Circuits)Hunan UniversityChangsha 410082China

Considering the intrinsic advantages of natural copiousness and cost-effectiveness of potassium resource,potassium-ion batteries(KIBs) are booming as prospective alternatives to lithium-ion batteries(LIBs) in large-scale energy storage scenarios. Nevertheless, lacking desirable electrodes for reversibly hosting the bulky K+hinders the widespread application of KIBs, and it needs to be urgently solved. Hereon, the porous S-doped Sb_(2)O_(3)-graphene-carbon(SAGC) nanofibers are manufactured through an adjustable and facile approach, which involves electrospinning, in situ etching and sulfuration. The synthesized SAGC is featured by the ultra-small amorphous Sb_(2)O_(3) homogeneously wrapped inside the carbon matrix, as well as the co-incorporation of graphene and sulfur. Tentatively,the SAGC nanofiber sheets are applied as binder-free anodes for KIBs, exhibiting a prominent cycling life(256.72 m Ah·g^(-1) over 150 cycles at 100 m A·g^(-1)) and rate·g^(-1) over 100 cycles at 1 A·g^(-1)). The positive synergy among all the active components accounts for the distinguished performances of the SAGC. By reinforcing the tolerability to the swelling stress, producing the valid electrochemical active sites, and promoting the charge transferring for reversible K+uptake, the SAGC finally renders the excellent cyclability, capacity, and rate capability. Moreover, the extrinsic electrochemical pseudocapacitance characteristics induced by the porous carbon substrate elevate the K-storage capacity of the SAGC as well. It is hoped that the conclusions drawn may offer new insights into a direction for the high-performance binderfree KIB anodes.

关键词： S-doped Sb_(2)O_(3)-graphene-carbon Nanofibers Binder-free anodes Potassium-ion batteries

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Tungsten chalcogenides as anodes for potassium-ion batteries

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Tungsten 2024年第2期6卷 278-292页

作者： Yu-Han Wu Wei-Hao Xia Yun-Zhuo Liu Peng-Fei Wang Yu-Hang Zhang Jin-Ru Huang Yang Xu De-Ping Li Li-Jie Ci School of Environmental and Chemical Engineering Shenyang University of TechnologyShenyang 110870China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China State Key Laboratory of Advanced Welding and Joining School of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen 518055China Department of Chemistry University College LondonLondon WC1H 0AJUnited Kingdom

Potassium-ion batteries(PIBs)by virtue of their strong cost competitiveness and similar electrochemical properties to lithiumion batteries have been deemed to be a promising electrochemical energy storage technology.To promote the application in the commercial market,developing electrode materials with high specifi c capacities,superior cycling stability,and reliable safety is of great importance.Anode materials as an important component of PIBs play a decisive role,among which twodimensional transition metal chalcogenides(2D TMCs)have attracted wide attention owing to their unique material and electrochemical properties.In the 2D TMCs’family,molybdenum chalcogenides as fl agship are the most studied materials and demonstrated the potential as anodes.With the deepening of research on 2D TMCs,another shining member that possesses similar properties to molybdenum chalcogenides,tungsten chalcogenides(WS_(2),WSe_(2),and WTe_(2)),has aroused tremendous attention.Despite many inspiring results,various challenges remain to be further addressed;meanwhile,some results are still unclear and disputed.Herein,this review fi rst introduces their material properties and electrochemical storage mechanisms.Then,we systematically overview the research progress and put forward promoting improvement strategies.Finally,challenges and opportunities that would be future research directions are discussed.

关键词： Electrochemical energy storage Potassium-ion batteries anodes Tungsten chalcogenides

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Cobalt phosphide-based composites as anodes for lithium-ion batteries:From mechanism,preparation to performance

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Particuology 2024年第5期88卷 11-31页

作者： Bo Lan Yishan Wang Jialei Lu Dongdong Liu Chuncheng Wei Xueqian Zhang Xiaoxiao Huang Guangwu Wen School of Materials Science and Engineering Shandong University of TechnologyZibo255000China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin150001China School of Materials Science and Engineering Harbin Institute of TechnologyWeihai264209China

With the further requirements of electronic products and powered vehicles,the development of a new generation with low-voltage and high-capacity anode materials is crucial for lithium-ion batteries(LIBs).Transition metal phosphides,especially cobalt phosphide(CoP)composites,have become a research hotspot for LIBs anode materials in recent years due to their high theoretical specific capacity,low polarization,and suitable voltage plateau.This review first systematically discusses the lithium storage mechanism and preparation methods of CoP in current research.Subsequently,the applications of CoP anode materials in LIBs are categorically reviewed,including the composites of CoP with various types of carbon materials and heterostructures.Finally,the challenges and future development directions of CoP anode materials are summarized to provide guidance for further improving the lithium storage performance of CoP and its practical applications.

关键词： CoP Composites Preparation anodes Lithium-ion batteries

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Research progress of alkaline earth metal iron-based oxides as anodes for lithium-ion batteries

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Journal of Semiconductors 2024年第2期45卷 21-33页

作者： Mingyuan Ye Xiaorui Hao Jinfeng Zeng Lin Li Pengfei Wang Chenglin Zhang Li Liu Fanian Shi Yuhan Wu School of Environmental and Chemical Engineering Shenyang University of TechnologyShenyang 110870China College of Materials Science and Engineering Nanjing Tech UniversityNanjing 211816China College of Pharmacy Xinjiang Medical UniversityEngineering Research Center of Xinjiang and Central Asian Medicine Resources(Ministry of Education)Urumqi 830000China Institute for Carbon Neutralization College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325035China School of Physics and Electronic Engineering Jiangsu UniversityZhenjiang 212013China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin 300071China

Anode materials are an essential part of lithium-ion batteries(LIBs),which determine the performance and safety of LIBs.Currently,graphite,as the anode material of commercial LIBs,is limited by its low theoretical capacity of 372 mA·h·g^(−1),thus hindering further development toward high-capacity and large-scale applications.Alkaline earth metal iron-based oxides are considered a promising candidate to replace graphite because of their low preparation cost,good thermal stability,superior stability,and high electrochemical performance.Nonetheless,many issues and challenges remain to be addressed.Herein,we systematically summarize the research progress of alkaline earth metal iron-based oxides as LIB anodes.Meanwhile,the material and structural properties,synthesis methods,electrochemical reaction mechanisms,and improvement strategies are introduced.Finally,existing challenges and future research directions are discussed to accelerate their practical application in commercial LIBs.

关键词： alkali-earth metal iron-based oxides anodes lithium-ion batteries electrochemical energy storage

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Layered Potassium Titanium Niobate/Reduced Graphene Oxide Nanocomposite as a Potassium‑Ion Battery Anode

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Nano-Micro Letters 2024年第1期16卷 1-16页

作者： Charlie A.F.Nason Ajay Piriya Vijaya Kumar Saroja Yi Lu Runzhe Wei Yupei Han Yang Xu Department of Chemistry University College London20 Gordon StreetLondon WC1H 0AJUK

With graphite currently leading as the most viable anode for potassium-ion batteries(KIBs),other materials have been left relatively underexamined.Transition metal oxides are among these,with many positive attributes such as synthetic maturity,longterm cycling stability and fast redox kinetics.Therefore,to address this research deficiency we report herein a layered potassium titanium niobate KTiNbO5(KTNO)and its rGO nanocomposite(KTNO/rGO)synthesised via solvothermal methods as a high-performance anode for KIBs.Through effective distribution across the electrically conductive rGO,the electrochemical performance of the KTNO nanoparticles was enhanced.The potassium storage performance of the KTNO/rGO was demonstrated by its first charge capacity of 128.1 mAh g^(−1) and reversible capacity of 97.5 mAh g^(−1) after 500 cycles at 20 mA g^(−1),retaining 76.1%of the initial capacity,with an exceptional rate performance of 54.2 mAh g^(−1)at 1 A g^(−1).Furthermore,to investigate the attributes of KTNO in-situ XRD was performed,indicating a low-strain material.Ex-situ X-ray photoelectron spectra further investigated the mechanism of charge storage,with the titanium showing greater redox reversibility than the niobium.This work suggests this lowstrain nature is a highly advantageous property and well worth regarding KTNO as a promising anode for future high-performance KIBs.

关键词： Potassium-ion batteries Intercalation Transition metal oxides anodes Nanocomposite

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Progress and perspective on rechargeable magnesium-ion batteries

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Science China Chemistry 2024年第1期67卷 214-246页

作者： Guixin Wang Zhechen Wang Hucheng Shi Aobing Du Mingliang Sun Guanglei Cui School of Materials Science and Engineering Ocean University of ChinaQingdao 266100China Qingdao Industrial Energy Storage Research Institute Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101China

Current electrochemical energy storage technology has evolved a variety of rechargeable battery systems.Recently,the resource shortage of raw materials in commercially available lithium-ion batteries has attracted widespread attention.The requirements to meet resourcefulness,sustainability,safety,and high energy density have motivated the development of rechargeable magnesium-ion batteries(RMBs).Although RMBs have made significant progress so far,there are still many obstacles to practical orientation.We systematically summarize the significant progress and the latest research on RMBs,including Mg^(2+)-conducting electrolytes,Mg^(2+)-storage cathodes,and Mg-based anodes.In this review,we mainly introduce the properties and features of various Mg^(2+)-conductive electrolytes,the mainstream cathode materials,and their respective Mg^(2+)-storage mechanisms,as well as the Mg metal(or alloy)anodes and the corresponding modification strategies.Finally,the future directions in various key components for RMBs are highlighted.

关键词： rechargable magenisum-ion batteries electrolytes cathodes anodes

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SiO-Sn_(2)Fe@C composites with uniformly distributed Sn_(2)Fe nanoparticles as fast-charging anodes for lithium-ion batteries

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eScience 2023年第1期3卷 62-70页

作者： Hanyin Zhang Renzong Hu Sirui Feng Zhiqun Lin Min Zhu School of Materials Science and Engineering Guangdong Provincial Key Laboratory of Advanced Energy Storage MaterialsSouth China University of TechnologyGuangzhou 510640China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA30332USA

SiO-based materials represent a promising class of anodes for lithium-ion batteries(LIBs),with a high theoretical capacity and appropriate and safe Li-insertion potential.However,SiO experiences a large volume change during the electrochemical reaction,low Li diffusivity,and low electron conductivity,resulting in degradation and low rate capability for LIBs.Here,we report on the rapid crafting of SiO–Sn_(2)Fe@C composites via a one-step plasma milling process,leading to an alloy of Sn and Fe and in turn refining SiO and Sn_(2)Fe into nanoparticles that are well dispersed in a nanosized,few-layer graphene matrix.The Sn and Fe nanoparticles generated during the first Li-insertion process form a stable network to improve Li diffusivity and electron conductivity.As an anode mate-rial,the SiO–Sn_(2)Fe@C composite manifests high reversible capacities,superior cycling stability,and excellent rate capability.The capacity retention is found to be as high as 95%and 84%at the 100th and 300th cycles under 0.3 C.During rate capability testing at 3,6,and 11 C,the capacity retentions are 71%,60%,and 50%,respectively.This study highlights that this simple,one-step plasma milling strategy can further improve SiO-based anode materials for high-performance LIBs.

关键词： SiO based Sn_(2)Fe Lithium-ion batteries anodes Fast-charging

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Progress and perspectives on two-dimensional silicon anodes for lithium-ion batteries

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ChemPhysMater 2023年第1期2卷 1-19页

作者： Han Zhao Fan Yang Chongxing Li Tong Li Shuxian Zhang Chengxiang Wang Zhiwei Zhang Rutao Wang Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of EducationSchool of Materials Science and EngineeringShandong UniversityJinan 250061China Suzhou Institute of Shandong University Suzhou 215123China

Silicon(Si)anodes with extremely high theoretical capacities are considered indispensable for next-generation high-energy lithium-ion batteries(LIBs).However,several intractable problems,including pulverization,poor electrical contact,and continuous side reactions caused by the large volume change of Si during lithia-tion/delithiation,lead to a short cycle life and poor rate capability,thus hindering the commercial use of Si anodes in LIBs.Two-dimensional(2D)Si with a unique graphene-like structure has a short ion diffusion path-way,small volume change during lithiation,and efficient redox site utilization,making it more promising than bulk Si or Si with other versatile structures for use in LIBs.Theoretical analysis demonstrated that the low energy barrier on the surface of 2D Si accelerates the transport of Li+.However,the issues surrounding 2D Si,includ-ing the tedious and user-unfriendly synthesis,ease of restacking,and atmospheric sensitivity,limit its practical applications,which are discussed in this review.Furthermore,possible solutions to these remaining challenges and new directions are provided,with the aim of designing practical and high-performance 2D Si anodes for next-generation LIBs.

关键词： Lithium-ion batteries Two-dimensional materials Silicon anodes Alloy-type materials

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Osiers-sprout-like heteroatom-doped carbon nanofibers as ultrastable anodes for lithium/sodium ion storage

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Nano Research 2018年第7期11卷 3791-3801页

作者： Hang Zhang Guanhua Zhang Zhiqin Li Ke Qu Huimin Shi Qingfeng Zhang Huigao Duan Jianhui Jiang College of Chemistry and Chemical Engineering Hunan University Changsha 410082 China State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body National Engineering Research Center for High Efficiency Grinding College of Mechanical and Vehicle Engineering Hunan University Changsha 410082 China Department of Materials Science and Engineering Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge Massachusetts 02139 USA

We report an in situ carbothermic reduction process to prepare osiers-sprout-like heteroatom-doped carbon nanofibers. The dosage of copper salts and a unique annealing process have a crucial effect on the development of this unique carbon structure. A systematic analysis is performed to elucidate the possible mechanism of synthesis of the carbon nanofibers decorated with carbon bubbles. As anodes for rechargeable lithium/sodium ion batteries, the heteroatom-doped nanofibers exhibit high reversible capacities and satisfactory long-term cycling stabilities. The osiers-sprout-like heteroatom-doped carbon nanofiber electrodes deliver an ultrastable cycling performance with reversible capacities of 480 and 160 mAh·g^-1 for lithium-ion and sodium-ion batteries after 900 cycles at a current density of 800 mA·g^-1, respectively.

关键词： doped carbon nanofibers carbothermic reduction anodes lithium-ion batteries sodium-ion batteries

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Recent progress in Li-ion batteries with TiO_(2) nanotube anodes grown by electrochemical anodization

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Rare Metals 2021年第2期40卷 249-271页

作者： Meng-Meng Zhang Jia-Yuan Chen Hui Li Chun-Rui Wang College of Science and Shanghai Institute of Intelligent Electronics and Systems Donghua UniversityShanghai201620China

Self-organized titanium dioxide(TiO_(2))nanotubes,which are prepared by electrochemical anodizing,have been widely researched as promising anodes for Liion batteries.Both nanotubular morphology and bulk structure of TiO_(2)nanotubes can be easily changed by adjusting the anodizing and annealing parameters.This is provided to investigate different phenomena by selectively adjusting a specific parameter of the Li^(+)insertion mechanism.In this paper,we reviewed how the morphology and crystallography of TiO_(2)nano tubes influence the electrochemical performance of Li^(+)batteries.In particular,electrochemical performances of amorphous and anatase titanium dioxide nanotube anodes were compared in detail.As we all know,TiO_(2)nanotube anodes have the advantages of nontoxicity,good stability,high safety and large specific surface area,in lithium-ion batteries.However,they suffer from poor electronic conductivity,inferior ion diffusivity and low theoretical capacity(335 mAh·g^(-1)),which limit their practical application.Generally,there are two ways to overcome the shortcomings of titanium dioxide nanotube anodes,including doping and synthesis composites.The achievements and existing problems associated with doped TiO_(2)nanotube anodes and composite material anodes are summarized in the present review.Based on the analysis of lithium insertion mechanism of titanium dioxide nanotube electrodes,the prospects and possible research directions of TiO_(2)anodes in lithiumion batteries are discussed.

关键词： Electrochemical anodization TiO_(2)nanotubes anodes Li-ion batteries

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