Li-related anodes with stable ability and excellent rate performance are urgently being pursued to overcome the slow kinetic of current lithium ion storage devices.In this work,an annealing-hydrothermal method is deve...Li-related anodes with stable ability and excellent rate performance are urgently being pursued to overcome the slow kinetic of current lithium ion storage devices.In this work,an annealing-hydrothermal method is developed to fabricate the anode of a three-dimension nano-construction with robust charge transfer networks,which is composed of elements B,N co-doped carbon tube(BN-CT)as the carrier of red phosphorous to(3D BN-CT@P).Then,3D BN-CT@P is embedded in the graphene aerogel network to obtain (3D BN-CT@P@GA).Impressively,the 3D BN-CT@P@GA shows high capacity and good cycle stability in the potential rage of 0.01-2.5V.Especially,the discharge capacity is~800 mAh g^(-1) at 500 mA g^(-1) after 500 cycles when evaluated as anode materials for lithium-ion batteries(LIBs).The improved electrochemical performances result from the unique structure of the 3D BN-CT@P@GA.With the hetero atoms doping,the active P can load up to the BN-CT,which can realize the high capacity as well as the low potential for the anode.At the same time,the graphene aerogel network provides the protection for the BN-CT@P species and good conductivity to enhance ion diffusion.This work fundamentally presents an effective structural engineering way for improving the performance of P-based anodes for advanced LIBs.展开更多
Catechol-formaldehyde resin(CFR)is very attractive for H_(2)O_(2) production via the catalytic process.However,the H2O2 formation is accompanied by the oxidation of catechol groups to o-benzoquinone groups on CFR,whic...Catechol-formaldehyde resin(CFR)is very attractive for H_(2)O_(2) production via the catalytic process.However,the H2O2 formation is accompanied by the oxidation of catechol groups to o-benzoquinone groups on CFR,which will cause irreversible damage to CFR and greatly limit its long-term stable catalytic activity.Herein,CdS/CFR composite photocatalyst with a core-shell structure was synthesized by hydrothermal method.The photogenerated electrons of Cds are used as a powerful driving force for the reversible redox conversion between catechol groups and o-benzoquinone groups on the CFR.展开更多
基金Financial supports from the NSFC(22035001,21574018,and 51433003)the Fundamental Research Funds for the Central Universities(2412019ZD002).
文摘Li-related anodes with stable ability and excellent rate performance are urgently being pursued to overcome the slow kinetic of current lithium ion storage devices.In this work,an annealing-hydrothermal method is developed to fabricate the anode of a three-dimension nano-construction with robust charge transfer networks,which is composed of elements B,N co-doped carbon tube(BN-CT)as the carrier of red phosphorous to(3D BN-CT@P).Then,3D BN-CT@P is embedded in the graphene aerogel network to obtain (3D BN-CT@P@GA).Impressively,the 3D BN-CT@P@GA shows high capacity and good cycle stability in the potential rage of 0.01-2.5V.Especially,the discharge capacity is~800 mAh g^(-1) at 500 mA g^(-1) after 500 cycles when evaluated as anode materials for lithium-ion batteries(LIBs).The improved electrochemical performances result from the unique structure of the 3D BN-CT@P@GA.With the hetero atoms doping,the active P can load up to the BN-CT,which can realize the high capacity as well as the low potential for the anode.At the same time,the graphene aerogel network provides the protection for the BN-CT@P species and good conductivity to enhance ion diffusion.This work fundamentally presents an effective structural engineering way for improving the performance of P-based anodes for advanced LIBs.
基金the financial support for this work provided by the Jilin Provincial Natural Science Foundation of China(No.20210101404JC)National Natural Science Foundation of China(22271044).
文摘Catechol-formaldehyde resin(CFR)is very attractive for H_(2)O_(2) production via the catalytic process.However,the H2O2 formation is accompanied by the oxidation of catechol groups to o-benzoquinone groups on CFR,which will cause irreversible damage to CFR and greatly limit its long-term stable catalytic activity.Herein,CdS/CFR composite photocatalyst with a core-shell structure was synthesized by hydrothermal method.The photogenerated electrons of Cds are used as a powerful driving force for the reversible redox conversion between catechol groups and o-benzoquinone groups on the CFR.
