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中国化学快报（英文版）
中国化学快报（英文版）

梁晓天

月刊

1001-8417

cclbj@imm.ac.cn

010-63165638

100050

北京市先农坛街1号

中国化学快报（英文版）/Journal Chinese Chemical LettersCSCDCSTPCD北大核心SCI
查看更多>>本刊是由中国科协主管、中国化学会主办、中国医学科学院药物所承办的学术期刊，是由著名化学家梁晓天院士主编。是中国化学界通向世界的窗口，内容覆盖化学全领域。本刊的办刊宗旨是“新、快、准”，我们将坚持这个宗旨，力求及时反映化学研究中各个相关领域内的最新进展及热点问题，主要读者群是科研人员、研究生、大学教师。现已被国内外多家数据库收录，如SCI　Search、Chemical Abstract、Research Alert、Chemistry Citation Index、《日本科技文献速报》、万方数据数字化期刊群、中国学术期刊过刊全文数据库、中国学术期刊（光盘版）、中国学术期刊文摘、中文期刊全文数据库、俄罗斯Рж期刊源等。
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    Revealing the size effect of FeS2 on solid-state battery performances at different operating temperatures

    Chaochao WeiRu WangZhongkai WuQiyue Luo...
    189-194页
    查看更多>>摘要：FeS2 shows significant potential as cathode material for all-solid-state lithium batteries(ASSLBs)due to its high theoretical specific capacity,low cost,and environmental friendliness.However,the poor ion/electron conductivity and large volume variation effect of FeS2 inhibit its practical applications.Here,the influence of particle size of FeS2 on the corresponding sulfide-based solid-state batteries is carefully investigated by tuning FeS2 size.Moreover,low operating temperature is chosen to mitigate the large volume changes during cycling in the battery.S-FeS2 with smaller particle sizes delivers superior elec-trochemical performances than that of the larger L-FeS2 in Li5.5PS4.5Cl1.5-based ASSLBs under different operating temperatures.S-FeS2 shows stable discharge capacities during 50 cycles with a current density of 0.1 mA/cm2 under-20 ℃.When the current density rises to 1.0mA/cm2,it delivers an initial discharge capacity of 146.9 mAh/g and maintains 63％of the capacity after 100 cycles.This work contributes to con-structing ASSLBs enables excellent electrochemical performances under extreme operating temperatures.
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    Ti3C2Tx MXene in-situ transformed Li2TiO3 interface layer enabling 4.5 V-LiCoO2/sulfide all-solid-state lithium batteries with superior rate capability and cyclability

    Yaping WangPengcheng YuanZeyuan XuXiong-Xiong Liu...
    195-200页
    查看更多>>摘要：All-solid-state lithium batteries(ASSLBs)based on sulfide electrolytes promise next-generation energy storage with high energy density and safety.However,the sulfide electrolytes suffer from phase instabil-ity and sluggish interfacial charge transport when pairing with layered oxide cathodes at high voltages.Herein,a simple and efficient strategy is proposed using two-dimensional Ti3C2Tx MXene as starting ma-terial to in-situ construct a 15 nm Li2TiO3 layer on a typical oxide cathode,LiCoO2.The in-situ transforma-tion of Ti3C2Tx into Li2TiO3 layer occurs at a low temperature of 500 ℃,avoiding the phase deterioration of LiCoO2.The thin Li2TiO3 layer is Li+conducting and electrochemically stable,thereby preventing the interfacial decomposition of sulfide electrolytes induced by LiCoO2 at high voltages and facilitating Li+transport at the interface.Moreover,Li2TiO3 can stabilize the layer structure of LiCoO2 at high voltages.Consequently,the sulfide-based ASSLB using LiCoO2@Li2TiO3 cathode can operate stably at a high voltage of up to 4.5 V(vs.Li+/Li),delivering an outstanding initial specific discharge capacity of 138.8 mAh/g with a high capacity retention of 86.2％after 100 cycles at 0.2 C.The in-situ transformation strategy may also apply to other MXenes,offering a general approach for constructing other advanced lithiated coatings for oxide cathodes.
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    Defined organic-octamolybdate crystalline superstructures derived Mo2C@C as efficient hydrogen evolution electrocatalysts

    Jiao LiChenyang ZhangChuhan WuYan Liu...
    201-205页
    查看更多>>摘要：Hydrogen evolution electrocatalysts derived from metal-organic crystalline frameworks can inherit the merits of ordered and adjustable structures with high surface area.In this paper,organic-octamolybdate crystalline superstructures(OOCS)with a fixed stoichiometric ratio of Mo8(L)2 and high Mo content(＞40 wt％)were synthesized using flexible ligands with controllable lengths(named as OOCS-1-3).Then,molybdenum carbides coated with carbon layers as electrocatalysts(Mo2C@C-1-3)can be obtained di-rectly from a one-step high-temperature carbonization process using OOCS-1-3 as precursors.As a typical example,Mo2C@C-3 exhibits satisfactory hydrogen evolution activity with a low overpotential of 151 mV(1.0mol/L KOH)at 10mA/cm2 and stability for 24h.The electrocatalytic activity is mainly from the syn-ergistic interactions between the carbon layers and molybdenum carbide species.Furthermore,compared with the initial content of C,N,Mo in OOCS and Mo2C@C,the catalytic activity increases with the N amount.This work makes organic-octamolybdate crystalline superstructures used as general precursors to product high Mo content electrocatalysts applied in energy storage and conversion fields.
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    Imide-based covalent organic framework with excellent cyclability as an anode material for lithium-ion battery

    Yue QianZhoujia LiuHaixin SongRuize Yin...
    206-210页
    查看更多>>摘要：Covalent organic frameworks(COFs)exhibiting reversible redox behaviors have been identified as promis-ing candidates for constructing electrode materials in lithium-ion batteries(LIBs).However,their exten-sive application has been limited due to finite redox sites and poor structural stability.In this study,we design and synthesize a novel polyimide covalent organic framework(PI-COF)using the traditional solvothermal method and successfully apply it as an anode material for LIBs.The large conjugated struc-ture of PI-COF accelerates charge transfer,while its large surface area provides more active sites,making PI-COF an attractive anode material for LIBs.Furthermore,the PI-COF anode material demonstrates high reversible specific capacity and excellent long-term cycling stability due to its COF characteristics.Specif-ically,the PI-COF electrodes deliver a specific capacity of 800 mAh/g at a current density of 200mA/g after 200 cycles,while a specific capacity of 450 mAh/g at a current density of 1000 mA/g is sustained after 800 cycles.The outstanding lithium storage capacity,particularly the satisfactory long-term cycling stability,establishes PI-COF as a promising material for LIBs.
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    Methyl functionalization of trimesic acid in copper-based metal-organic framework for ammonia colorimetric sensing at high relative humidity

    Yuxin WangZhengxuan SongYutao LiuYang Chen...
    211-215页
    查看更多>>摘要：Exhaled ammonia(NH3)can be used as a crucial biomarker of kidney and liver diseases.However,the high humidity in the detection conditions remains a challenge for accurate detection by gas sensors.Herein,a copper-based metal-organic framework(CH3-Cu-BTC)with methyl(CH3-)functionalization of trimesic acid was synthesized for NH3 colorimetric sensing.The CH3-Cu-BTC exhibited a strong response for 5 ppm NH3 with high selectivity under high relative humidity(75％RH).Density functional theory(DFT)simulations indicated that the NH3 molecules interacted more strongly with CH3-Cu-BTC than H2O molecules did,and the corresponding color switching was attributed to the lone-pair electron in NH3 changing the coordination environment of Cu2+ions,leading to an obviously visible color switching re-sponse from ruby green to blue.Based on the tailor-made pore chemistry,the precise detection of trace amounts of NH3 in exhaled air was realized through functionalized MOF materials.The strategy used in this study not only offers a new pathway for the rapid detection of low concentration NH3 under humid conditions,but also shows a method for early respiration diagnosis of kidney and liver diseases.
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    Boron nitride nanofibers enhanced composite PEO-based solid-state polymer electrolytes for lithium metal batteries

    Qianqian SongYunting ZhangJianli LiangSi Liu...
    216-221页
    查看更多>>摘要：Polyethylene oxide(PEO)-based solid-state polymer electrolytes(SPEs)are limited by their poor cyclic sta-bility and inferior ionic conductivity for applicating in high-safety,long-cycling and high-energy-density lithium metal batteries.Herein,porous boron nitride nanofibers(BNNFs)are filled into PEO-based SPE,which significantly suppresses Li dendrites growth and enhances the electrochemical performance of Li metal battery.BNNFs with high porosity have more active sites to connect with PEO,which can effec-tively reduce the crystallinity of the PEO matrix and enhance its ionic conductivity.Moreover,owing to the hardness and good stability of BNNFs,BNNFs/PEO/LiTFSI electrolyte exhibits a wider electrochemical window,better mechanical property and higher thermal stability compared with PEO/LiTFSI electrolyte.Consequently,the Li symmetric cell composed of 1％BNNFs/PEO/LiTFSI performs good cyclic stability(＞1800 h),and the Li||1％BNNFs/PEO/LiTFSI||LFP full battery shows obviously improved performances in charge-discharge polarization voltage,discharge specific capacity,rate performance and cyclic stability than the Li||PEO/LiTFSI||LFP battery.
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    Fully fluorinated hybrid zeolite imidazole/Prussian blue analogs with combined advantages for efficient oxygen evolution reaction

    Jiayu XuMeng LiBaoxia DongLigang Feng...
    222-228页
    查看更多>>摘要：Hybrid metal-organic framework(MOF)derivatives play a significant role in the novel catalyst develop-ment in energy conversion reactions.Here,we demonstrated the low-temperature fully fluorinated ze-olitic imidazole framework(ZIF)coupled with a three-dimensional open framework Prussian blue analog(PBA)with combined advantages for electrocatalytic oxygen evolution reaction(OER)in water splitting reaction.The spectroscopic analysis and the electrochemical studies revealed the combined advantages of efficient electronic effect and active site synergism.Because of good conductivity improvement by N-doped carbon derived from ZIF and the high electrochemical surface area and active site exposure from PBA derivatives,good catalytic performance was obtained on the optimal catalyst of CoNi ZIF/CoFe-PBA-F-300,which required a low overpotential of 250 mV to reach 10 mA/cm2 loaded on the glassy carbon electrode,with Tafel slope of 47.4mV/dec,and very high dynamic and steady stability.In addition,the multi-component with the mixed structure from highly polar metal fluorides promoted the easy forma-tion of the active phase as revealed by the post-sample analysis.The current results showed a novel composite catalyst materials development from the hybrid MOF derivatives,which would be promising in the electrolysis of water oxidation reactions and energy-relevant catalysis reactions.
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    Improved performance of LiMn0.8Fe0.2PO4 by addition of fluoroethylene carbonate electrolyte additive

    Guihuang FangWei ChenHongwei YangHaisheng Fang...
    229-233页
    查看更多>>摘要：The addition of electrolyte additives is an effective strategy for tuning the property of the electrolyte to engineer the electrode/electrolyte interface,and there exist obvious discrepancies regarding the effect of fluoroethylene carbonate(FEC)as an electrolyte additive on the performance of cathodes.Herein FEC is introduced into the electrolyte of the LiMn0.8Fe0.2PO4/Li cell and its effect on the properties of the LiMn0.8Fe0.2PO4 is investigated.It is found that the addition of FEC in the electrolyte has a positive effect on the performance of the LiMn0.8Fe0.2PO4 cathode,which can be attributed to the reduced products gen-erated by the interfacial side-reactions on the LiMn0.8Fe0.2PO4 cathode surface and the decreased metal dissolution in the FEC-containing electrolyte,thanks to the higher oxidation resistance of FEC and the easier and stronger binding of FEC and PF6-.
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    Two new high-temperature molecular ferroelectrics[1,5-3.2.2-Hdabcn]X(X=ClO4-,ReO4-)

    Keke HanWenjun RaoXiuli YouHaina Zhang...
    234-238页
    查看更多>>摘要：Molecular ferroelectrics have attracted much attention because of their excellent piezoelectricity,me-chanical workability,and second harmonic effect.Here,we successfully prepared two molecular fer-roelectrics[1,5-3.2.2-Hdabcn]X(X=ClO4-,1;ReO4-,2)by reactions of a quasi-spherical amine 1,5-diazabicycle[3.2.2]nonane(1.5-3.2.2-dabcn)with HX aqueous solution.Compounds 1 and 2 undergo high-temperature phase transitions at 381K(1)and 396K(2).Before and after the phase transition,they crystallize in the polar point group mm2,and the centrosymmetric point groups mmm and 4/mmm,re-spectively.According to Aizu rules,these two compounds experience mmmFmm2 and 4/mmmFmm2 type ferroelectric phase transitions,respectively.The ferroelectricity of both compounds is well expressed in their polycrystalline film at room temperature with low coercive voltages of 13 V for 1 and 25 V for 2.Us-ing piezoelectric force microscopy(PFM),the 180° anti-parallel ferroelectric domains and the reversible polarization switching can be clearly observed in 1 and 2.This high-temperature molecular ferroelec-tric material has great application potential in flexible materials,biomechanics,intelligent wearables and other fields.
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    Highly-chlorinated inert and robust interphase without mineralization of oxide enhancing high-rate Li metal batteries

    Long LiKang YangChenpeng XiMengchao Li...
    239-243页
    查看更多>>摘要：Side reactions and dendrite growth triggered by the unstable interface and inhomogeneous deposition have become the biggest obstacle to the commercialization for lithium metal batteries.In this study,a highly-chlorinated organic-inorganic hybrid interfacial protective layer is developed by rationally tuning the interfacial passivation and robustness to achieve the convenient and efficient Li metal anode.The polyvinyl chloride(PVC)can effectively resist water and oxygen,which is confirmed by density functional theory.The organic-dominant solid electrolyte interphases(SEI)with lithium chloride are investigated by the X-ray photoelectron spectroscopy(XPS)with little mineralization of oxide,such as Li2O and Li2CO3.With such artificial SEI,a uniform and dense lithium deposition morphology are formed and an ultra-long stable cycle of over 500 h are achieved even at an ultra-high current density of 10mA/cm2.Moreover,the simple and convenient protected anode also exhibits excellent battery stability when paired with the LiNi0.8Co0.1Mn0.1O2(NCM811)and LiFePO4(LFP)cathode,showing great potential for the commercial application of lithium metal batteries.
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