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N-doped porous carbon nanofibers sheathed pumpkin-like Si/C composites as free-standing anodes for lithium-ion batteries

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Journal of Energy Chemistry 2021年第3期30卷 727-735页

作者： Yanfei Zeng Yudai Huang Niantao Liu Xingchao Wang Yue zhang Yong Guo Hong-Hui Wu Huixin Chen Xincun Tang qiaobao zhang Key Laboratory of Energy Materials Chemistry Ministry of EducationKey Laboratory of Advanced Functional MaterialsAutonomous RegionInstitute of Applied ChemistryCollege of ChemistryXinjiang UniversityUrumqi 830046XinjiangChina Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005FujianChina Beijing Advanced Innovation Center for Materials Genome Engineering School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083China School of Chemistry and Chemical Engineering Central South UniversityChangsha 410083HunanChina Xiamen Institute of Rare Earth Materials Haixi InstitutesChinese Academy of SciencesXiamen 361024FujianChina

Dramatic capacity fading and poor rate performance are two main obstacles that severely hamper the widespread application of the Si anode owing to its large volume variation during cycling and low intrinsic electrical *** mitigate these issues,free-standing N-doped porous carbon nanofibers sheathed pumpkin-like Si/C composites(Si/C-ZIF-8/CNFs)are designed and synthesized by electrospinning and carbonization methods,which present greatly enhanced electrochemical properties for lithium-ion battery *** particular structure alleviates the volume variation,promotes the formation of stable solid electrolyte interphase(SEI)film,and improves the electrical *** a result,the as-obtained free-standing Si/C-ZIF-8/CNFs electrode delivers a high reversible capacity of 945.5 mAh g^(-1) at 0.2 A g^(-1) with a capacity retention of 64% for 150 cycles,and exhibits a reversible capacity of 538.6 mA h g^(-1) at 0.5 A g^(-1) over 500 ***,the full cell composed of a freestanding Si/C-ZIF-8/CNFs anode and commercial LiNi_(1/3)Co_(1/3)Mn_(1/3)O_(2)(NCM)cathode shows a capacity of 63.4 mA h g^(-1) after 100 cycles at 0.2 C,which corresponds to a capacity retention of 60%.This rational design could provide a new path for the development of high-performance Si-based anodes.

关键词： Pumpkin-like silicon/carbon composites N-doped porous carbon nanofibers Free-standing anode Lithium-ion batteries

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Vinyltrimethylsilane as a novel electrolyte additive for improving interfacial stability of Li-rich cathode working in high voltage

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Chinese Chemical Letters 2024年第2期35卷 534-538页

作者： Bing Jiang Hao Li Bi Luo Lehao Liu Lihua Chu qiaobao zhang Meicheng Li State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources School of New EnergyNorth China Electric Power UniversityBeijing 102206China State Key Laboratory of Physical Chemistry of Solid Surfaces College of MaterialsXiamen UniversityXiamen 361005China

Boosting the interfacial stability between electrolyte and Li-rich cathode material at high operating voltage is vital important to enhance the cycling stability of Li-rich cathode materials for high-performance Li-ion *** this work,vinyltrimethylsilane as a new type of organic silicon electrolyte additive is studied to address the interfacial instability of Li-rich cathode material at high operating *** cells using vinyltrimethylsilane additive shows the high capacity retention of 73.9%after 300 cycles at 1 C,whereas the cells without this kind of additive only have the capacity retention of 58.9%.The improvement of stability is mainly attributed to the additive helping to form a more stable surface film for Li-rich cathode material,thus avoiding direct contact between the electrolyte and the cathode material,slowing down the dissolution of metal ions and the decomposition of the electrolyte under high operating *** findings in this work shed some light on the design of stable cycling performance of Li-rich cathode toward advanced Li-ion batteries.

关键词： Vinyltrimethylsilane Electrolyte additive Li-rich cathode Interfacial stability Capacity retention

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Tea-derived carbon materials as anode for high-performance sodium ion batteries

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Chinese Chemical Letters 2023年第4期34卷 519-525页

作者： Huayan Wang Huixin Chen Chi Chen Miao Li Yiming Xie Xingcai zhang Xianwen Wu qiaobao zhang Canzhong Lu Engineering Research Center of Environment-Friendly Function Materials Ministry of EducationInstitute of Materials Physical ChemistryHuaqiao UniversityXiamen 361021China CAS key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005China School of Engineering and Applied Sciences Harvard UniversityCambridgeMA 02138United States School of Engineering Massachusetts Institute of TechnologyCambridgeMA 02139United States Xiamen Key Laboratory of Rare Ear School of Chemistry and Chemical Engineering Jishou UniversityJishou 416000China

Sodium-ion batteries(SIB) have attracted widespread attention in large-scale energy storage fields owing to the abundant reserve in the earth and similar properties of sodium to lithium. Biomass-based carbon materials with low-cost, controllable structure, simple processing technology, and environmental friendliness tick almost all the right boxes as one of the promising anode materials for SIB. Herein, we present a simple novel strategy involving tea tomenta biomass-derived carbon anode with enhanced interlayer carbon distance(0.44 nm) and high performance, which is constructed by N,P co-doped hard carbon(Tea-1100-NP) derived from tea tomenta. The prepared Tea-1100-NP composite could deliver a high reversible capacity(326.1 m Ah/g at 28 m A/g), high initial coulombic efficiency(ICE = 90% at 28 m A/g),stable cycle life(262.4 m Ah/g at 280 m A/g for 100 cycles), and superior rate performance(224.5 m Ah/g at 1400 m A/g). Experimental results show that the excellent electrochemical performance of Tea-1100-NP due to the high number of active N,P-containing groups, and disordered amorphous structures provide ample active sites and increase the conductivity, meanwhile, large amounts of microporous shorten the Na+diffusion distance as well as quicken ion transport. This work provides a new type of N,P co-doped high-performance tomenta-derived carbon, which may also greatly promote the commercial application of SIB.

关键词： Tea tomenta Co-doped Hard carbon Initial coulombic efficiency Sodium-ion batteries

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Scalable synthesized high-performance TiO_(2)-Si-C hybrid anode for lithium batteries

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Journal of Energy Chemistry 2023年第2期77卷 348-358,I0009页

作者： Liao Shen Chengjie Xu Jingguo Gao Jianming Tao qiaobao zhang Yue Chen Yingbin Lin Zhigao Huang Jiaxin Li College of Physics and Energy Fujian Provincial Solar Energy Conversion and Energy Storage Engineering Technology Research CenterFujian Normal UniversityFuzhou 350117FujianChina Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials Fuzhou 350117FujianChina Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering Fuzhou 350117FujianChina Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005FujianChina

At present,developing a simple strategy to effectively solve the shackles of volume expansion,poor conductivity and interface compatibility faced by Si-C anode in lithium batteries(LIBs)is the key to its ***,low-cost nano-Si powders were prepared from Si-waste of solar-cells by sanding treatment,which can effectively reduce the commercialization cost for Si-C ***,micro-nano structured Gr@Si/C/TiO_(2) anode materials with graphite(Gr)as the inner core,TiO_(2)-doped and carbon-coated Si as the outer coating-layer,were synthesized at kilogram-scale per milling *** characterization results indicate that TiO_(2)-doped carbon layer can improve the interface compatibility with the electrolyte,further promote the reduction of electrode polarization,and finally enhance the battery performance for the Gr@Si/C/TiO_(2) ***,Gr@Si/C/TiO_(2) composites can output excellent LIB performance,especially with high initial coulombic efficiency(ICE)of 82.51%and large average reversible capacity of~810 mA h g^(-1) at 0.8 A g^(-1) after 1000 ***,Gr@Si/C/TiO_(2)‖NCM811 pouch full cells deliver impressive performance especially with high energy density of~489.3 W h kg^(-1) based on the total weight of active materials,suggesting its promising application in the high performance LIBs.

关键词： Lithium-ion batteries Si-C anodes Kilogram-scale preparation Interface compatibility Electrochemical mechanism

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Synergistic coupling of amorphous carbon and graphitic domains toward high-rate and long-life K^(+) storage

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Journal of Energy Chemistry 2022年第10期31卷 533-541,I0013页

作者： Hehe zhang Wangqin Li Jianhai Pan Zhefei Sun Bensheng Xiao Weibin Ye Chengzhi Ke Haowen Gao Yong Cheng qiaobao zhang Ming-Sheng Wang State Key Laboratory of Physical Chemistry of Solid Surfaces College of MaterialsXiamen UniversityXiamen 361005FujianChina Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials(Xiamen University) Xiamen 361005FujianChina

Amorphous carbon materials hold great potential for practical use in potassium-ion batteries(PIBs)due to their abundant resources,low cost and high structural ***,given the challenge of sluggish potassiation kinetics,the rate performance of amorphous carbon is severely ***,amorphous carbon compounded with graphitic domains(HG-CNTs)was proposed as an advanced anode for *** directly verified by in situ transmission electron microscopy(TEM),the graphitic domains guarantee fast K-ions transport in the carbon composite at a high current density,while the amorphous carbon shells ensure the structural integrity during potassiation,thus boosting its fast and durable K^(+)*** a PlB anode,the HG-CNTs electrode exhibits not only a super-stable long-term cyclability(191.6 mAh g^(-1)at 1 A g^(-1)with almost no capacity decay over 3000 cycles),but also an outstanding rate performance(184.5 mAh g^(-1)at 2 A g^(-1)).Ex situ Raman and TEM results further suggest that the highly reversible structure of HG-CNTs is responsible for its superior electrochemical *** work provides helpful insights into the development of carbonaceous electrodes with both high rate capability and long cycle life for PIBs.

关键词： Potassium-ion batteries Amorphous carbon Graphitic domains Synergistic effect In situ TEM

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Composition optimized trimetallic PtNiRu dendritic nanostructures as I versatile and active electrocatalysts for alcohol oxidation

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Nano Research 2019年第3期12卷 651-657页

作者： Yan Lu Wei Wang Xiaowei Chen Yuhui zhang Yanchen Han Yong Cheng Xue-Jiao Chen Kai Liu Yuanyuan Wang qiaobao zhang Shuifen Xie College of Materials Science and Engineering Huaqiao University Xiamen 361021 China Department of Physics Xiamen University Xiamen 361005 China Shenzhen Research Institute of Xiamen University Shenzhen 518000 China Department of Materials Science and Engineering Xiamen University Xiamen 361005 China

Platinum-based nano crystals are the most effective electrocatalysts for accelerati ng the chemical tran sformatio ns on the anode in direct alcohol fuel cells. To facilitate practical applications and overcome the drawbacks of diverse alcohols, it is significant to develop electrocatalysts with high activities and a wide fuel flexibility. Here, we demonstrate a practicable solution method for fabricating composition tun able trimetallic PtNiRu den dritic nano structures (DNSs) which can serve as versatile and active catalysts for electrooxidatio n of a variety of liquid alcohols. A series of trimetallic DNSs with tun able Pt/Ni/Ru atomic ratios were successfully syn thesized by simply adjusti ng the feeding of precursors. Detailed electrochemical test indicates that, among other compositions, the Pt66Ni27Ru7 DNSs present much superior electroactivity in catalyzing electrooxidation of liquid alcohols in acidic mediums. Specifically, the mass activity and specific activity on the Pt66Ni27Ru7 DNSs, for electrooxidation of methanol, ethanol, and ethylene glycol, are 4.57 and 4.34 times, 3.55 and 3.42 times, and 2.37 and 2.28 times that of the commercial Pt black, respectively. X-ray photoelectron spectroscopy and CO stripping studies reveal the adsorption of CO on these PtNiRu DNSs is much weaker than on pure Pt. Meanwhile, the surface Ru sites can provide neighbouring -OH groups to facilitate the oxidati on and removal of the adsorbed in termediates (-CO) on the surface Pt sites, effectively improvi ng the CO tolera nee of the catalysts. The PtNiRu DNSs also show effectively boosted capacity for breaking the C-C bond in C2-alcohols, showing great potential for fuel-flexible fuel cell applications.

关键词： platinum-based nanocrystals dendritic nanostructures fuel flexibility electrooxidation of alcohols CO toleranee

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LiPO_(2)F_(2) electrolyte additive for high-performance Li-rich cathode material

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Journal of Energy Chemistry 2021年第9期30卷 564-571页

作者： Bing Jiang Jingru Li Bi Luo Qizhang Yan Hao Li Lehao Liu Lihua Chu Yingfeng Li qiaobao zhang Meicheng Li School of New Energy North China Electric Power UniversityBeijing 102206China Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005FujianChina Department of NanoEngineering University of CaliforniaSan DiegoLa JollaCA 92093United States

Li-rich layered oxide cathodes have received considerable attention because of the high operating potential and specific capacity. However, the structural instability and parasitic reactions at high potential cause severe degradation of the electrochemical performance. In our studies, the cycling stability of Li_(1.14)Ni_(0.133)Co_(0.133)Mn_(0.544)O_(2) cathode is improved with LiPO_(2)F_(2) electrolyte additive. After 500 cycles, the capacity retention is increased from 53.6% to 85% at 3 C by LiPO_(2)F_(2) modification. This performance is mainly attributed to the enhanced interfacial stability of the Li-rich cathode. Based on systematic characterization, LiPO_(2)F_(2) additive was found to promote a stable interface film on the cathode surface during the cycling and mitigates the interfacial side reactions. This study provides new insights for improving high-potential Li-rich layered oxide batteries.

关键词： Li-rich cathode Cathode electrolyte interface LiPO_(2)F_(2) High energy density

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High performance columnar-like Fe2O3@carbon composite anode via yolk@shell structural design

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Journal of Energy Chemistry 2020年第2期29卷 126-134页

作者： Zhiming Zheng Pei Li Jason Huang Haodong Liu Yi Zao Zhongli Hu Li zhang Huixin Chen Ming-Sheng Wang Dong-Liang Peng qiaobao zhang Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005FujianChina Department of Nanoengineering University of California San DiegoLa Jolla 92093CAUSA Joint Laboratory for Extreme Conditions Matter Properties Southwest University of Science and TechnologyMianyang 621010SichuanChina Soochow Institute for Energy and Materials Innovations(SIEMIS) Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceSoochow UniversitySuzhou 215006Jiangsu.China Xiamen Institute of Rare Earth Materials Haixi institutesChinese Academy of SciencesXiamen 361024Fujian.China

Conversion-type reaction anode materials with high specific capacity are attractive candidates to improve lithium ion batteries(LIBs), yet the rapid capacity fading and poor rate capability caused by drastic volume change and low electronic conductivity greatly hinder their practical applications. To circumvent these issues, the successful design of yolk@shell Fe2 O3@C hybrid composed of a columnar-like Fe2O3 core within a hollow cavity completely surrounded by a thin, self-supported carbon(C) shell is presented as an anode for high-performance LIBs. This yolk@shell structure allows each Fe2O3 core to swell upon lithiation without deforming the carbon shell. This preserves the structural and electrical integrity against pulverization, as revealed by in situ transmission electron microscopy(TEM) measurement. Benefiting from these structural advantages, the resulting electrode exhibits a high reversible capacity(1013 m Ah g-1 after80 cycles at 0.2 A g-1), outstanding rate capability(710 m Ah g-1 at 8 A g-1) and superior cycling stability(800 m Ah g-1 after 300 cycles at 4 A g-1). A Li-ion full cell using prelithiated yolk@shell Fe2 O3@C hybrid as the anode and commercial Li CoO2(LCO) as the cathode demonstrates impressive cycling stability with a capacity retention of 84.5% after 100 cycles at 1 C rate, holding great promise for future practical applications.

关键词： Fe2O3 Mesoporous carbon Yolk@shell Lithium ion battery

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Polymer-/Ceramic-based Dielectric Composites for Energy Storage and Conversion

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Energy & Environmental Materials 2022年第2期5卷 486-514页

作者： Honghui Wu Fangping Zhuo Huimin Qiao Lalitha Kodumudi Venkataraman Mupeng Zheng Shuize Wang He Huang Bo Li Xinping Mao qiaobao zhang Beijing Advanced Innovation Center for Materials Genome Engineering Collaborative Innovation Center of Steel TechnologyUniversity of Science and Technology BeijingBeijing 100083China Department of Materials and Earth Sciences Technical University of DarmstadtDarmstadt 64287Germany School of Advanced Materials and Engineering Sungkyunkwan University(SKKU)Suwon 16419Korea Key Laboratory of Advanced Functional Materials Ministry of EducationFaculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005China

Dielectric composites boost the family of energy storage and conversion materials as they can take full advantage of both the matrix and *** review aims at summarizing the recent progress in developing highperformance polymer-and ceramic-based dielectric composites,and emphases are placed on capacitive energy storage and harvesting,solid-state cooling,temperature stability,electromechanical energy interconversion,and high-power *** fabrication techniques of dielectric composites such as 3D printing,electrospinning,and cold sintering are addressed,following by highlighted challenges and future research *** advantages and limitations of the typical theoretical calculation methods,such as finite-element,phase-field model,and machine learning methods,for designing high-performance dielectric composites are *** review is concluded by providing a brief perspective on the future development of composite dielectrics toward energy and electronic devices.

关键词： composite dielectric energy storage and conversion ferroelectric

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B-doped and La_(4)NiLiO_(8)-coated Ni-rich cathode with enhanced structural and interfacial stability for lithium-ion batteries

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Journal of Energy Chemistry 2022年第8期31卷 588-594,I0016页

作者： Lingjun Li Lizhi Fu Miao Li Chu Wang Zixiang Zhao Shangchen Xie Haichen Lin Xianwen Wu Haodong Liu Li zhang qiaobao zhang Lei Tan School of Materials Science and Engineering Changsha University of Science and TechnologyChangsha 410114HunanChina Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005FujianChina School of Energy and Power Engineering Changsha University of Science and TechnologyChangsha 410114HunanChina School of Chemistry and Chemical Engineering Jishou UniversityJishou 416000HunanChina Chemical Engineering UC San DiegoLa Jolla 92093CAUnited States College of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361005FujianChina

Ni-rich layered oxides are considered promising cathodes for advanced lithium-ion batteries(LIBs)in the future,owing to their high capacity and low ***,the issues on structural and interfacial stability of Ni-rich cathodes still pose substantial obstacles in the practical application of advanced ***,we employ a one-step method to synthesize a B-doped and La_(4)NiLiO_(8)-coated LiNi_(0.82)5Co_(0.115)Mn_(0.06)O_(2)(BL-1)cathode with reliable structure and interface,for the first *** La_(4)NiLiO_(8)coating layer can prevent cathodes from electrolyte assault and facilitate Li+diffusion ***,B-doping can effectively restrain the pernicious H_(2)-H_(3) phase transition and adjust the orientation of primary particles to a radial alignment,which is obstructive to the arise of microcracks induced by the change of anisotropic ***,when tested in pouch cells,the BL-1 cathode exhibits outstanding capacity retention of 93.49%after 500 cycles at 1 *** dual-modification strategy dramatically enhances the stability of the structure and interface for Ni-rich cathode materials,consequently accelerating the commercialization process of high-energy–density LIBs.

关键词： B-doped and La_(4)NiLiO_(8)-coated Nickel-rich layered cathode Cycle stability Lithium-ion battery

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