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Superhydrophilic nickel hydroxide ultrathin nanosheets enable high-performance asymmetric supercapacitors

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Rare Metals 2024年第1期43卷 138-147页

作者： Yi-Ran wang {1. Zhang Jian-Min Gu Xiao-Yu zhao Ran zhao Xing wang Tian-Hui Wu Jing wang Ji-Dong wang De-Song wang State Key laboratory of Metastable Materials Science and {1.(MMST) Hebei Key Laboratory of Applied ChemistryYanshan UniversityQinhuangdao 066004China department of Food and Pharmaceutical {1. Suihua UniversitySuihua 152000China School of chemical Science and {1. Tongji UniversityShanghai 200092China School of Sciences Hebei University of Science and TechnologyShijiazhuang 050018China

Superhydrophilic surfaces have been applied for supercapacitor;however,during energy storage reaction,how the wettability affects the process of electrochemical reaction specifically is still ***,we demonstrate superhydrophilic surface for promotion of electrochemical reactions by liquid affinity and further explain the mechanism,where the transition of the wettability state caused by the change in surface free energy is the main reason for the obvious increase in specific *** citric acid assistance strategy,an intrinsically hydrophobic Ni(OH)_(2)thick nanosheets(HNHTNs,1. nm)can be transitioned into superhydrophilic Ni(OH)_(2)ultrathin nanosheets(SNHUNs,6.8 nm),where the water contact angle was 0°and the surface free energy increased from 8.6to 65.8 mN·m^(-1.,implying *** with HNHTNs,the specific capacitance of SNHUNs is doubled:from 1.30 F·g^(-1.(HNHTNs)to 2350 F·g^(-1.(2A·g^(-1.)and,even at 20 A·g^(-1.,from 833 F·g^(-1.(HNHTNs)to 1.70 F·g^(-1..The asymmetric capacitors assembled by SNHUNs and activated carbon show 52.44 Wh·kg^(-1.at 1.0W·kg^(-1.and excellent stability with~90%retention after5000 cycles(~80%retention after 9500 cycles).The promotion of electrochemical performances is ascribed to the change of surface wettability caused by surface free energy,which greatly increase affinity of electrode to the surrounding liquid environment to reduce the interface resistance and optimize the electron transport path.

关键词： Asymmetric supercapacitor Superhydrophilic interface Transition metal hydroxides Ultrathin nanosheets High specific capacitance

Rapid lithium-ion insertion/extraction and migration behavior of Na_(2)WO_(4)-encapsulated lithium-rich layered oxide cathode

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Rare Metals 2024年第8期43卷 3647-3660页

作者： Yu-Shen zhao Fan-Fan {1. Jian-Cang {1. Peng-fei {1. Ting-Feng Yi Jun-Hong Zhang School of Materials Science and engineering Northeastern UniversityShenyangShenyang 110819China Key laboratory of Dielectric and Electrolyte Functional Material Hebei Province School of Resources and MaterialsNortheastern University at QinhuangdaoQinhuangdao 066004China Shandong provincial Key {1. of chemical Energy Storage and Novel Cell technology College of Chemistry and Chemical EngineeringLiaocheng UniversityLiaocheng 252059China

Due to the low cost,high working voltage and high storage capacity,li-rich Mn-based layered compounds show promise as the cathode materials for lithiumion batteries(liBs).However,the side reactions at the solid-liquid interface of the cathode will lead to rapid capacity decay and inferior rate ***,this article proposes a liquid-phase dispersion strategy to introduce a Na_(2)WO_(4)layer on the li_(1.2)Ni_(0.1.)-Co_(0.1.)Mn_(0.54)O_(2) cathode,which can reduce the side effects between raw materials and electrolyte and promote the insertion/extraction rate of li^(+),thus enhancing the material stability and rate *** a result,the capacity retention rate is 96.9%after 200 cycles under ***,the capacities are 1.7.5,1.9.5,1.1.1.and58.3 mAh·g^(-1.at 1.,2C,5C and 1.C,implying a superior fast charging *** exceptional performance can be ascribed to both the increased conductivity and enhanced structural stability of the cathode ***'s more,based on the investigation of ion insertion/extraction behavior in electrode materials and the ion migration kinetics in the electrolyte,this study suggests that coating li-rich Mn-based materials with Na_(2)WO_(4)can be a promising strategy to improve their performance in liBs.

关键词： li-ion battery Coating Rate performance li_(1.2)Ni_(0.1.)Co_(0.1.)Mn_(0.54)O_(2) Reaction kinetics

A multi-kernel-shell indium selenide@carbon nanosphere enabling high-performance lithium-ion batteries

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Journal of Energy Chemistry 2024年第9期96卷 698-708页

作者： Sihao wang Zhuoming Jia Ying {1. Yanhong li Xianglong Kong Yongde Yan fei He Milin Zhang linzhi Wu Piaoping Yang Wenwu li Meilin liu Zhiliang liu College of Material Sciences and chemical {1. Harbin Engineering UniversityHarbin 150001HeilongjiangChina School of Materials Science&engineering Georgia Institute of TechnologyAtlantaGA 30332USA School of chemical {1. Sungkyunkwan University 2066Seobu-roJangan-guSuwon 440-746Republic of Korea College of Aerospace and Civil engineering Harbin Engineering UniversityHarbin 150001HeilongjiangChina

Indium selenide has garnered significant attention for high volumetric capacities,but is currently plagued by the sluggish charge transfer kinetics,severe volume effect,and rapid capacity degradation that hinder their practical ***,we design,synthesize,and characterize a multi-kernel-shell structure comprised of indium selenide encapsulated within carbon nanospheres(referred to as m-K-S In_(2)Se_(3)@C)through an integrated approach involving a hydrothermal method followed by a gaseous selenization ***,experimental measurements and density functional theory calculations confirm that the m-K-S In_(2)Se_(3)@C not only improve the adsorption capability for li-ions but also lower the energy barrier for li-ions *** from numerous contact points,shorter diffusion distances and an improved volume buffering effect,the m-K-S In_(2)Se_(3)@C achieves an 800 mA h g^(−1.capacity over 1.00 loops at 1.00 mA g^(−1.,a 520 mA h g^(−1.capacity at 5000 mA g^(−1.and an energy density of 270 Wh kg^(−1.when coupled with liFePO4,surpassing most related anodes reported ***,the m-K-S structure with unique nano-micro structure offers a new approach to the design of advanced anodes for liBs.

关键词： Multi-kernel-shell structure In_(2)Se_(3) Anode li-ion batteries

Cobalt-loaded carbon nanotubes boosted aerobic ciprofloxacin transformation driven by sulfide:A comprehensive mechanism investigation

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Chinese chemical Letters 2024年第3期35卷 127-134页

作者： Han-Qing zhao Pei{1. Lu fei Chen Chen-Xuan {1. Rui Yan Yang Mu State Key laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing 400044China CAS Key laboratory of Urban Pollutant Conversion Department of Environmental Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026China Key laboratory of the Three Gorges Reservoir Region's Eco-Environment College of Environment and EcologyChongqing UniversityChongqing 400045China College of Resources and Environmental engineering Hefei University of TechnologyHefei 230009China

Sulfide oxidation under aerobic conditions can produce active oxygen for the transformation of organic pollutants in aquatic ***,the catalytic performance of transition metal-supported carbon material on this process is poor *** study found that Co-loaded carbon nanotubes(CNTs)was able to realize the efficient aerobic transformation of antibiotic ciprofloxacin(CIP)by sulfide,with the pseudo-first order reaction rate constant improved from 0.01. h^(-1.without catalyst to 0.44–0.71.h^(-1.with 1.0 mg/L Co-loaded *** oxygen(^(1.O_(2))was the main active specie playing key roles in the process of CIP aerobic transformation with presence of Co-loaded *** studies indicated that the excellent electron transfer ability of Co-loaded CNTs might play an important role to promote the electron transfer and facilitate the formation of intermediate H_(2)O_(2)and^(1.O_(2).Additionally,the Co-loaded CNTs/sulfide system effectively reduced the acute toxicity of organic pollutant,and Co-loaded CNTs showed remarkable cycling stability and negligible *** study gives a better understanding for the Co-loaded CNTs mediated aerobic antibiotics transformation by sulfide,and provide a reference for the application of Co-loaded carbon materials on organics aerobic transformation by sulfide.

关键词： Ciprofloxacin Aerobic transformation Co-loaded carbon nanotubes Sulfide Singlet oxygen

Efficient C-N coupling in electrocatalytic urea generation on copper carbonate hydroxide electrocatalysts

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Journal of Energy Chemistry 2024年第6期93卷 289-298,I0008页

作者： Yinuo wang Yian wang Qinglan zhao Hongming Xu Shangqian Zhu fei Yang Ernest P.Delmo Xiaoyi Qiu Chi Song Juhee Jang Tiehuai li Ping Gao MDanny Gu Minhua Shao Advanced Materials Thrust The Hong Kong University of Science and Technology(Guangzhou)Guangzhou 511400GuangdongChina department of {1. and Biological engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina department of Materials Science and {1. Southern University of Science and Technology of Chin11088 Xueyuan BoulevardShenzhen 518055GuangdongChina Energy Institute and Chinese National Engineering Research Center for Control&Treatment of Heavy Metal PollutionThe Hong Kong University of Science and TechnologyKowloonHong KongChina department of Chemistry City University of Hong KongTat Chee AvenueKowloonHong KongChina

Urea generation through electrochemical CO_(2) and NO_(3)~-co-reduction reaction(CO_(2)NO_(3)RR)is still {1.mited by either the low selectivity or yield rate of ***,we report copper carbonate hydroxide(Cu_2(OH)_2CO_(3))as an efficient CO_(2)NO_(3)RR electrocatalyst with an impressive urea Faradaic efficiency of45.2%±2.1.and a high yield rate of 1.64.5±1.5.2μg h~(-1.mg_(cat)~(-1..More importantly,H_(2) evolution is fully inhibited on this electrocatalyst over a wide potential range between-0.3 and-0.8 V versus reversible hydrogen *** thermodynamic simulation reveals that the first C-N coup{1.ng follows a unique pathway on Cu_2(OH)_2CO_(3) by combining the two intermediates,~*COOH and~**** work demonstrates that high selectivity and yield rate of urea can be simultaneously achieved on simple Cu-based electrocatalysts in CO_(2)NO_(3)RR,and provide guidance for rational design of more advanced catalysts.

关键词： Copper carbonate hydroxide Co-reduction Urea generation C-N coupling DFT calculation

Hybrid structure of iron single atoms and metallic titanium for photothermal ethanol steam reforming

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Science china Chemistry 2024年第3期67卷 848-854页

作者： Dachao Yuan Guanda Han Zhixuan wang Jianguo {1. Kailuan li Pengfei wang Jianjun Hao Yaguang li Jinhua Ye College of Mechanical and Electrical engineering Technology Innovation Center of Intelligent Agricultural EquipmentHebei Agricultural UniversityBaoding 071001China Research Center for Solar Driven Carbon Neutrality The College of Physics Science and TechnologyInstitute of Life Science and Green DevelopmentHebei UniversityBaoding 071002China International Center for Materials Nanoarchitectonics(WPI-MANA) National Institute for Materials Science(NIMS)1-1 NamikiTsukubaIbaraki 305-0044Japan Graduate School of chemical Science and {1. Hokkaido UniversitySapporo 060-0814Japan

Photothermal ethanol steam reforming(ESR) is currently limited by low intrinsic activity and strong solar energy ***,we synthesized Fe single atoms supported on CeO_(2)(SA Fe-CeO_(2)) to exhibit excellent low-temperature ESR activity with a hydrogen production rate of 51. mmol g^(-1.h^(-1. at 350℃,becuase of the high oxidation state of Fe single atoms to weaken the reaction barrier of ethanol ***,a heterostructure of SA Fe-CeO_(2) and Ti foil could eliminate 66% of infrared radiation via the size effect,thus achieving a 3.5 sun-driven temperature of 347℃.Consequently,the heterostructure of SA Fe-CeO_(2) and Ti foil shows a hydrogen generation rate of 984 mmol g^(-1.h^(-1. of ESR and 1..31. of solar-to-hydrogen energy conversion efficiency,which outperforms other photothermal ethanol-hydrogen production *** study provides a new path for designing active catalytic sites and trapping light energy of photothermal catalysts.

关键词： photothermal catalysis single atoms heterostructure ethanol steam reforming iron

Performance Design of High-Temperature Chloride Salts as Thermal Energy Storage Material

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Journal of Thermal Science 2024年第2期33卷 479-490页

作者： zhao Le {1. Jingyao CUI liu li Baorang DU Xiaoze WU Hongwei Key laboratory of Power Station Energy Transfer Conversion and System(North{1. Electric Power university) Ministry of EducationBeijing102206China School of Energy and Power engineering Lanzhou University of TechnologyLanzhou730050China School of Physics Engineering and Computer ScienceUniversity of HertfordshireHatfieldAL109ABUK

The chloride salts have great potential used as high-temperature thermal energy storage(TES) medium for the concentrated solar power *** this study,liCl,KCl and CaCl_(2) were selected as energy storage materials in order to further broaden the working temperature of ternary chloride salt and improve its energy storage *** new high-temperature energy storage ternary chloride composed of liCl,KCl,and CaCl_(2) was developed based on the phase diagram generated by *** components of liCl-KCl-CaCl_(2) with the mass ratio of 37.85%-53.38%-8.77%,30.90%-1..82%-55.28% and 1.78%-1..61.-79.61. were developed,of which the corresponding melting temperature(T_(m)) 340.93,433.57 and 626.85℃,respectively,was obtained *** that T_(m) of the third group of salts was too high,only the first two groups of salts were *** test showed that the actual melting point was only 0.46% and 1.64% different from the melting point predicted by *** thermal properties of the two ternary chloride salts were also *** solid and liquid-specific heat of ternary salts was determined by DSC using sapphire as the standard *** vapor pressure and decomposition temperature of ternary chloride salts were *** results showed that the vapor pressure of salt 1.was almost constant below 650℃ by ***,the TG results showed that the upper working temperature of salt 1.was 650℃ under the air *** addition,the ternary chloride salts after short-term cycling still exhibited excellent thermal properties,which revealed that these good thermal properties make them have broad application prospects in high-temperature thermal energy storage systems.

关键词： chloride salts thermal energy storages thermal properties thermal stability

Preparation of nanocrystalline BaTiO_3 ceramics

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Science china(Technological Sciences) 2009年第6期52卷 1730-1734页

作者： DENG XiangYun1,2,li DeJun1,li JianBao2,wang XiaoHui3 & li LongTu3 1 College of Physics and Electronic Information,Tianjin Normal university,Tianjin 300387,china 2 Materials and chemical engineering Institute,Key laboratory for Hainan Advantage Resources and Applied technology in chemical engineering Material of Ministry of Education,Hainan provincial Key laboratory of Research on Utilization of Si-Zr-Ti,Hainan university,Haikou 570228,china 3 department of Materials Science and engineering,Tsinghua university,Beijing 100084,china Materials and chemical {1. Institute Key Laboratory for Hainan Advantage Resources and Applied Technology in Chemical Engineering Material of Ministry of Education Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Hainan U

The high-dense nanocrystalline BaTiO3(BT)ceramics with grain size smaller than 1.0nm have been successfully prepared by the two step sintering and the spark plasma sintering(SPS)*** successive transitions in nanograin BT ceramics from rhombohedral to orthorhombic,tetragonal and cubic transitions,similar to those in coarse BT ceramics,were revealed by in-situ temperature dependent Raman *** multiphase coexistence and the diffused phase transition character were demonstrated in the 8nm nanocrystalline BT ceramics.

关键词： nanocrystalline BaTiO3 ceramics preparation microstructure size effect

Synthesis of benzoxazine-based phenolic resin containing furan groups

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Chinese chemical Letters 2010年第7期21卷 868-871页

作者： Sheng Fang li School of {1. and Material engineering,Huangshi Institute of technology,Huangshi 435003,china School of chemical and Material {1. Huangshi Institute of Technology Huangshi 435003 China

A novel benzoxazine-based phenolic resin containing furan groups（PFB） was synthesized via simple two-step reactions and the structure of PFB was confirmed by FTIR and ~1. NMR *** scanning calorimetry（DSC） showed that the polybenzoxazine cured from PFB had good heat resistance and lower polymerization temperature compared with that of benzoxazine-based phenolic resins.

关键词： Benzoxazine Phenolic resin Furan Phenol-furfural Performance enhancement