Hierarchically porous carbon-coated SnO2@graphene foams as anodes for lithium ion storage

SnO2 as Advanced Anode of Alkali‐Ion Batteries: Inhibiting Sn Coarsening by Crafting Robust Physical Barriers, Void Boundaries, and Heterophase Interfaces for Superior Electrochemical Reaction Reversibility

“…g) Schematic of the synthesis process, h) SEM images, and i) cycling performance of C‐SnO 2 @GF. Reproduced with permission . Copyright 2017, Elsevier.…”

“…It is worth noting that a series of novel hybrid structures of SnO 2 NPs and carbonaceous materials have been designed by simultaneously employing C, CNTs, and Gr . It is believed that the synergistic effects of different carbon components in the hybrid architectures can further enhance the electrochemical properties of SnO 2 ‐based anodes . For example, Xu et al fabricated hierarchically porous carbon‐coated SnO 2 nanospheres encapsulated in graphene foams (C‐SnO 2 @GF) (Figure h) by employing the H‐bonding effect among sodium carboxymethyl cellulose (CMC), C‐SnO 2 nanospheres, and Gr nanosheets (Figure g).…”

“…It is believed that the synergistic effects of different carbon components in the hybrid architectures can further enhance the electrochemical properties of SnO 2 ‐based anodes . For example, Xu et al fabricated hierarchically porous carbon‐coated SnO 2 nanospheres encapsulated in graphene foams (C‐SnO 2 @GF) (Figure h) by employing the H‐bonding effect among sodium carboxymethyl cellulose (CMC), C‐SnO 2 nanospheres, and Gr nanosheets (Figure g). The C‐SnO 2 @GF nanocomposites exhibited remarkably improved cycling and rate performances with an ultrahigh reversible capacity of 1458.8 mAh g −1 (almost reaching the TC of SnO 2 , 1494 mAh g −1 ) after 700 cycles at 1 A g −1 (Figure i).…”

Design and synthesis of graphene/SnO2/polyacrylamide nanocomposites as anode material for lithium-ion batteries

“…[2][3][4][5][6] Tin dioxide (SnO 2 ) with an excellent theoretical capacity of 1494 mA h g À1 is a promising material of LIBs anode and has drawn a lot of attention. [7][8][9][10][11][12][13][14] However, the application of SnO 2 in the industries is restricted by two severe problems. First, the poor conductivity (resistivity 93 U m) leads to its low electronic conduction rate and poor multiplier performance.…”

“…Second, the pulverization problem caused by drastic volume change ($300%) during lithium insertion and extraction directly leads to severe capacity fading in the cycling. [15][16][17][18][19][20][21][22][23][24][25][26] To solve these two problems, much effort has been made, resulting in many signicant achievements. Anchoring the SnO 2 nanoparticles into carbon-based materials such as graphene or carbon nanotubes (CNTs) is a good way to enhance the conductivity and stability of SnO 2 -based anode materials.…”