Cyanogel-derived formation of 3 D nanoporous SnO2-MxOy (M=Ni, Fe, Co) hybrid networks for high-performance lithium storage.
Three-dimensional (3 D) nanoporous SnO2 -Mx Oy (M=Fe, Co, Ni, Cu, etc.) hybrid networks possess unique compositional and structural features that are beneficial to lithium storage and are thus anticipated to meet the performance requirements of advanced lithium-ion batteries for transportation and stationary energy storage. Herein, a facile, scalable, and versatile cyanogel-derived method for the construction of 3 D nanoporous SnO2 -Mx Oy hybrid networks was developed for the first time. The formation of 3 D nanoporous SnO2 -NiO, SnO2 -α-Fe2 O3 , and SnO2 -NiO-Co3 O4 hybrid networks was illustrated by using Sn-M cyanogels as precursors. Moreover, the anodic performance of the 3 D nanoporous SnO2 -NiO hybrid network was examined to demonstrate proof of concept. After coating with polypyrrole-derived carbon, the SnO2 -NiO@C hybrid network exhibited superior lithium-storage capabilities in terms of specific capacity, cycling stability, and rate capability.
Jiangsu Key Laboratory of New Power Batteries, Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023 (P. R. China).
Qingyun
Q
Zhu
Ping
P
Wu
Jinjing
J
Zhang
Weiyu
W
Zhang
Yiming
Y
Zhou
Yawen
Y
Tang
Tianhong
T
Lu
D003035:Cobalt / Q000737:chemistry; D003486:Cyanides / Q000737:chemistry*; D011211:Electric Power Supplies; D007501:Iron / Q000737:chemistry; D008094:Lithium / Q000737:chemistry*; D019216:Metals, Heavy / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry; D016062:Porosity; D017971:Tin Compounds / Q000737:chemistry*
D003486:Cyanides; D019216:Metals, Heavy; D017971:Tin Compounds; D003035:Cobalt; D009532:Nickel; D008094:Lithium; D007501:Iron; C045358:stannic oxide
electrochemistry; gels; hybrid anodes; lithium-ion batteries; nanoporous networks