The shuttle phenomenon and retarded conversion kinetics of lithium poly sulfides(LiPSs)are relatively severe in lithium-sulfur(Li-S)pouch cells.Owing to their redox potential in the sulfur working window,VO_(2)nanobel...The shuttle phenomenon and retarded conversion kinetics of lithium poly sulfides(LiPSs)are relatively severe in lithium-sulfur(Li-S)pouch cells.Owing to their redox potential in the sulfur working window,VO_(2)nanobelts show unique working mechanism.展开更多
The fast development of electronics and electric devices has inspired the practical application of lithium ion/metal batteries.Along this line,the metals and their compounds as electrode materials as well as the corre...The fast development of electronics and electric devices has inspired the practical application of lithium ion/metal batteries.Along this line,the metals and their compounds as electrode materials as well as the corresponding mechanism for energy storage have gained extensive international attention.The as-organized special topic focuses on W,Mo,Co,Zr,Hf,Re,Ta,Nb,V-based metals and their compounds for lithium ion/metal batteries.This special topic involves four reviews and four research papers totally,providing the latest advances of transition metals and their related compounds for rechargeable lithium ion/metal batteries.展开更多
The silicone rubber composites present remarkable mechanical properties due to the double network structure constructed with molecular network of matrix and filler network of silica.Nevertheless,the filler network str...The silicone rubber composites present remarkable mechanical properties due to the double network structure constructed with molecular network of matrix and filler network of silica.Nevertheless,the filler network structure and corresponding reinforcement mechanism are still under debate and need to be further probed with the aid of applicative advanced analysis techniques.Herein,small-angle neutron scattering(SANS)and synchrotron radiation X-ray nano-computed tomography(Nano-CT)techniques are employed to explore the evolution of filler networks of fumed,precipitated and sol-gel silica,respectively.Our studying results reveal the formation of filler network constructed by the interconnecting of branched silica aggregates.And the silica with highly associated structure,pertaining to amorphous morphology,small size,and large surface area,presents short distance and effective molecular chain bridge between aggregates,thus forming strong and steady filler networks.This work would provide deep-seated revisiting of filler networks and corresponding reinforcement mechanism and offer guidance for optimizing the mechanical properties of silicone rubber.展开更多
基金financially supported by the Project of State Key Laboratory of Environment-Friendly Energy Materials(SWUST,Nos.21fksy24 and 18ZD320304)Frontier Project of Chengdu Tianfu New Area Institute(SWUST,No.2022ZY017)Natural Science Foundation of Jiangsu Province(No.BK20230713)。
文摘The shuttle phenomenon and retarded conversion kinetics of lithium poly sulfides(LiPSs)are relatively severe in lithium-sulfur(Li-S)pouch cells.Owing to their redox potential in the sulfur working window,VO_(2)nanobelts show unique working mechanism.
文摘The fast development of electronics and electric devices has inspired the practical application of lithium ion/metal batteries.Along this line,the metals and their compounds as electrode materials as well as the corresponding mechanism for energy storage have gained extensive international attention.The as-organized special topic focuses on W,Mo,Co,Zr,Hf,Re,Ta,Nb,V-based metals and their compounds for lithium ion/metal batteries.This special topic involves four reviews and four research papers totally,providing the latest advances of transition metals and their related compounds for rechargeable lithium ion/metal batteries.
基金the National Natural Science Foundation of China(Nos.11605171 and 21973076)Sichuan Science and Technology Program(No.2018GZ0155)+2 种基金Ph.D program Foundation of SWUST(No.18ZX7112)Longshan Program for Talents(SWUST,No.I8 LZXT11)the Project of State Key Laboratory of Environment-Friendly Energy Materials(SWUST,No.19FKSY16).
文摘The silicone rubber composites present remarkable mechanical properties due to the double network structure constructed with molecular network of matrix and filler network of silica.Nevertheless,the filler network structure and corresponding reinforcement mechanism are still under debate and need to be further probed with the aid of applicative advanced analysis techniques.Herein,small-angle neutron scattering(SANS)and synchrotron radiation X-ray nano-computed tomography(Nano-CT)techniques are employed to explore the evolution of filler networks of fumed,precipitated and sol-gel silica,respectively.Our studying results reveal the formation of filler network constructed by the interconnecting of branched silica aggregates.And the silica with highly associated structure,pertaining to amorphous morphology,small size,and large surface area,presents short distance and effective molecular chain bridge between aggregates,thus forming strong and steady filler networks.This work would provide deep-seated revisiting of filler networks and corresponding reinforcement mechanism and offer guidance for optimizing the mechanical properties of silicone rubber.
