Over the last several years,major efforts have been expended to study viral infection of honeybees mainly due to colony losses around the world(Allen M,et al.,1996).It seems that honeybees are infected with numerous v...Over the last several years,major efforts have been expended to study viral infection of honeybees mainly due to colony losses around the world(Allen M,et al.,1996).It seems that honeybees are infected with numerous viruses mounting to 18so far.Infection may be asymptomatic but could still have adverse effects on the bee and may even cause death resulting in colony collapse.Sacbrood virus(SBV)is the most widely distributed of all honey bee viruses.展开更多
Rechargeable aluminum batteries(RABs)are a popular energy storage device because of its safety and environmental protection.As cathode materials of RABs,transition metal oxide,sulfide,and selenide have become the rese...Rechargeable aluminum batteries(RABs)are a popular energy storage device because of its safety and environmental protection.As cathode materials of RABs,transition metal oxide,sulfide,and selenide have become the research hotspot.In this work,we have successfully prepared CuO,Cu_(1.8)S,and Cu_(1.8)Se electrode materials.Among them,although Cu_(1.8)Se had a relatively higher initial discharge capacity,all of these products had severe capacity degradation in terms of cycling and rate performance.Furthermore,for solving the problem of capacity decline,CMK-3 modified separator was used to make the Cu_(1.8)Se cathode material more stable,thus improving cycling and rate performance.It can be confirmed by ex situ X-ray photoelectron spectroscopy(XPS)that both Cu and Se elements underwent reversible redox reactions during the charging/discharging process.Density functional theory was implemented to study the energy storage mechanism of CumX(X=O,S,Se).The results showed that Cu_(1.8)S and Cu_(1.8)Se mainly relied on AlCl4−for energy storage,and the intercalation/de-intercalation of Al3+occurred during the charge/discharge process in CuO material.Consequently,the optimized Cu_(1.8)Se/CMK-3@GF/C/Al revealed an outstanding rate capability(977.83 mAh·g^(−1)at 0.5 A·g^(−1))and long cyclic stability(retention of 478.77 mAh·g^(−1)after 500 cycles at 1.0 A·g^(−1)).Compared to previously reported cathode materials of RABs,this type of battery displays great superiority in terms of rate and cycling stability.This research also provides a novel approach to suppress the shuttle effect of active species for advanced clean energy devices.展开更多
文摘Over the last several years,major efforts have been expended to study viral infection of honeybees mainly due to colony losses around the world(Allen M,et al.,1996).It seems that honeybees are infected with numerous viruses mounting to 18so far.Infection may be asymptomatic but could still have adverse effects on the bee and may even cause death resulting in colony collapse.Sacbrood virus(SBV)is the most widely distributed of all honey bee viruses.
基金the National Natural Science Foundation of China(No.52102233)Nature Science Foundation of Hebei Province(No.E2021201006).
文摘Rechargeable aluminum batteries(RABs)are a popular energy storage device because of its safety and environmental protection.As cathode materials of RABs,transition metal oxide,sulfide,and selenide have become the research hotspot.In this work,we have successfully prepared CuO,Cu_(1.8)S,and Cu_(1.8)Se electrode materials.Among them,although Cu_(1.8)Se had a relatively higher initial discharge capacity,all of these products had severe capacity degradation in terms of cycling and rate performance.Furthermore,for solving the problem of capacity decline,CMK-3 modified separator was used to make the Cu_(1.8)Se cathode material more stable,thus improving cycling and rate performance.It can be confirmed by ex situ X-ray photoelectron spectroscopy(XPS)that both Cu and Se elements underwent reversible redox reactions during the charging/discharging process.Density functional theory was implemented to study the energy storage mechanism of CumX(X=O,S,Se).The results showed that Cu_(1.8)S and Cu_(1.8)Se mainly relied on AlCl4−for energy storage,and the intercalation/de-intercalation of Al3+occurred during the charge/discharge process in CuO material.Consequently,the optimized Cu_(1.8)Se/CMK-3@GF/C/Al revealed an outstanding rate capability(977.83 mAh·g^(−1)at 0.5 A·g^(−1))and long cyclic stability(retention of 478.77 mAh·g^(−1)after 500 cycles at 1.0 A·g^(−1)).Compared to previously reported cathode materials of RABs,this type of battery displays great superiority in terms of rate and cycling stability.This research also provides a novel approach to suppress the shuttle effect of active species for advanced clean energy devices.
