Li-rich Mn-based cathode materials have attracted extensive attention due to their remarkable energy density contributed by additional anionic redox.However,they always suffer from some undesired problems impeding the...Li-rich Mn-based cathode materials have attracted extensive attention due to their remarkable energy density contributed by additional anionic redox.However,they always suffer from some undesired problems impeding their further commercialization such as irreversible oxygen loss,transition metal migration,sluggish kinetics and so on.Fortunately,the above issues can be relieved effectively when 3d metal Mn is replaced by 4d metal Ru.We focus on the recent progress of Ru-containing cathode materials and make a detailed summary in this review.At first,we attempt to combine and elucidate the relationship between oxygen and Ru redox.Subsequently,the up-to-date materials of Ru-based cathode materials for Li^(+)/Na^(+)batteries are concluded systematically.Afterward,the effects of Ru are discussed in depth including enhancing the reversibility of anionic redox and structural stability,modulating the ratio between cationic and anionic redox,improving the kinetics of Li^(+)/Na^(+),inhibiting the transition metal migration and so on.More importantly,the future designs of Ru-containing cathode materials are also proposed enlighteningly.We hope this review could offer some new perspectives to comprehend the layered oxides involving anionic redox and provide useful guidelines to achieve better Li^(+)/Na^(+)rechargeable batteries.展开更多
A metal-organic photoinduced electron transfer(PET) supramolecular nanoarchitecture comprised of Ru(Ⅱ) bis(terpyridine)-modified pillar[5]arene(electron acceptor) and triazole triphenylamine amyl cyanide(electron don...A metal-organic photoinduced electron transfer(PET) supramolecular nanoarchitecture comprised of Ru(Ⅱ) bis(terpyridine)-modified pillar[5]arene(electron acceptor) and triazole triphenylamine amyl cyanide(electron donor) has been designed and constructed.Through the comparison of diverse solvents and acceptors,the two conditions,i.e.,modification of pillar[5]arene to donor and weak polar solvent are benefit for the occurrence of "efficient PET" because of shorter D-A distance in the presence of pillar[5]arene.Crucially,the fluorescence and PET process of the supramolecular assembly could be further modulated by solvent conversion and another competitive guest.The study provides a supramolecular method to design and construct tunable PET systems and PET-based smart materials.展开更多
基金This work was supported by the National Natural Science Foundation of China(grant no.22005274 and 21975225)the China Postdoctoral Science Foundation(grant nos.2023T160591)the National Key Research and Development Program of China(2022YFB2402200).
文摘Li-rich Mn-based cathode materials have attracted extensive attention due to their remarkable energy density contributed by additional anionic redox.However,they always suffer from some undesired problems impeding their further commercialization such as irreversible oxygen loss,transition metal migration,sluggish kinetics and so on.Fortunately,the above issues can be relieved effectively when 3d metal Mn is replaced by 4d metal Ru.We focus on the recent progress of Ru-containing cathode materials and make a detailed summary in this review.At first,we attempt to combine and elucidate the relationship between oxygen and Ru redox.Subsequently,the up-to-date materials of Ru-based cathode materials for Li^(+)/Na^(+)batteries are concluded systematically.Afterward,the effects of Ru are discussed in depth including enhancing the reversibility of anionic redox and structural stability,modulating the ratio between cationic and anionic redox,improving the kinetics of Li^(+)/Na^(+),inhibiting the transition metal migration and so on.More importantly,the future designs of Ru-containing cathode materials are also proposed enlighteningly.We hope this review could offer some new perspectives to comprehend the layered oxides involving anionic redox and provide useful guidelines to achieve better Li^(+)/Na^(+)rechargeable batteries.
基金the National Natural Science Foundation of China(Nos.21801063,21672192,21803059 and 21929101)China Postdoctoral Science Foundation(No.2018M642767)+4 种基金Ph.D.Foundation of Henan University of Technology,China(No.2017BS020)the Science and Technology Foundation of Henan Province(No.192102210039)the Colleges and Universities Key Research Program Foundation of Henan Province(No.19A150022)Fundation of Henan University of Technology(No.2018QNJH14)the Natural Science Foundation of Henan Province(No.182300410255)for financial support。
文摘A metal-organic photoinduced electron transfer(PET) supramolecular nanoarchitecture comprised of Ru(Ⅱ) bis(terpyridine)-modified pillar[5]arene(electron acceptor) and triazole triphenylamine amyl cyanide(electron donor) has been designed and constructed.Through the comparison of diverse solvents and acceptors,the two conditions,i.e.,modification of pillar[5]arene to donor and weak polar solvent are benefit for the occurrence of "efficient PET" because of shorter D-A distance in the presence of pillar[5]arene.Crucially,the fluorescence and PET process of the supramolecular assembly could be further modulated by solvent conversion and another competitive guest.The study provides a supramolecular method to design and construct tunable PET systems and PET-based smart materials.
