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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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    Ti3C2Tx MXene wrapped,carbon-coated porous Si sheets for improved lithium storage performance

    Hui ChengYueming LiuZhongling ChengXianying Wang...
    617-621页
    查看更多>>摘要：Si-based materials have shown great potential as lithium-ion batteries(LIBs)anodes due to their nat-ural reserves and high theoretical capacity.However,the large volume changes during cycles and poor conductivity of Si lead to rapid capacity decay and poor cycling stability,ultimately limiting their com-mercial applications.Herein,we have skillfully utilized the microporous MCM-22 zeolite as the unique silicon source to produce porous Si(pSi)sheets by a simple magnesiothermic reduction,followed by a carbon coating and further Ti3C2Tx MXene assembly,obtaining the ternary pSi@NC@TNSs composite.In the design,porous Si sheets provide more active sites and shorten Li-ion transport paths for electrochem-ical reactions.The N-doped carbon(NC)layer serves as a bonding layer to couple pSi and Ti3C2Tx.The conductive network formed by 2D Ti3C2Tx and medium NC layer effectively enhances the overall charge transport of the electrode material,and helps to stabilize the electrode structure.Therefore,the as-made pSi@NC@TNSs anode delivers an improved lithium storage performance,exhibiting a high reversible ca-pacity of 925 mAh/g at 0.5 A/g after 100 cycles.This present strategy provides an effective way towards high-performance Si-based anodes for LIBs.
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    Multifunctional properties of a polar spin chain compound[N(C3H7)4][Cu(C8H4NO4)]·H2O exhibiting both one-dimensional magnetism and nonlinear optical activity

    Ang LiYanhong WangHaotian TianAlimujiang Yalikun...
    622-625页
    查看更多>>摘要：Functional materials with multiple properties are urgent to be explored to reach high requirements for applications nowadays.In this work,a new multifunctional one-dimensional(1D)chain compound[N(C3H7)4][Cu(ohpma)]·H2O 1(ohpma=deprotonated N-(2-hydoxyphenyl)oxamic acid)exhibiting both 1D antiferromagnetic and nonlinear optical properties,which are both originated from the same polar[Cu(C8H4NO4)]magnetic units,has been successfully synthesized by evaporation at room temperature.Bis-polydentate nature of the(ohpma)3-ligand with constrained tridentate and bidentate coordination sites conducts Cu2+ions coordinating in different geometries and forms 1D chains along the c axis,which are further separated by the[N(C3H7)4]+cations.And the 1D magnetic chains further exhibit noncen-trosymmetric polar arrangement.Nonlinear optical study shows polar compound 1 exhibits a discernible second-harmonic generation(SHG)efficiency and the calculation of the partial density of states indicates that the SHG efficiency of 1 is mainly originated from the polar[Cu(C8H4NO4)]magnetic units.More-over,magnetic susceptibility shows a broad maximum around 70 K with strong intrachain interaction of J/kB=-113.0 K but no long-range order is observed down to 2 K,suggesting that 1 shows a good 1D magnetism.Both good 1D magnetism and SHG activity suggest that 1 could be as a potential multifunc-tional material,particularly.
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    Hybrid ionic/electronic interphase enabling uniform nucleation and fast diffusion kinetics for stable lithium metal anode

    Lun LiPengxia JiMeng HuangZixin Zhang...
    626-633页
    查看更多>>摘要：Lithium(Li)dendrite issue,which is usually caused by inhomogeneous Li nucleation and fragile solid electrolyte interphase(SEI),impedes the further development of high-energy Li metal batteries.However,the integrated construction of a high-stable SEI layer that can regulate uniform nucleation and facilitate fast Li-ion diffusion kinetics for Li metal anode still falls short.Herein,we designed an artificial SEI with hybrid ionic/electronic interphase to regulate Li deposition by in-situ constructing metal Co clusters em-bedded in LiF matrix.The generated Co and LiF both enable fast Li-ion diffusion kinetics,meanwhile,the lithiophilic properties of Co clusters can serve as Li-ion nucleation sites,thereby contributing to uniform Li nucleation and non-dendritic growth.As a result,a dendrite-free Li deposition with a low overpoten-tial(16.1 mV)is achieved,which enables an extended lifespan over 750 h under strict conditions.The full cells with high-mass-loading LiFePO4(11.5 mg/cm2)as cathodes exhibit a remarkable rate capacity of 84.1 mAh/g at 5 C and an improved cycling performance with a capacity retention of 96.4％after undergoing 180 cycles.
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    • 维普