Optimized assembling of MOF/SnO2/Graphene leads to superior anode for lithium ion batteries

Three‐Layer Structured SnO2@C@TiO2 Hollow Spheres for High‐Performance Sodium Storage

“…Interlayer spacing of roughly 0.34 nm is discerned in high‐resolution TEM (Figure 2g), which is corresponding to the (110) lattice of rutile‐phase SnO 2 . [ 32 ] Selected area electron diffraction (SAED) presents three diffraction rings, in agreement with (110), (101), and (211) planes of SnO 2 in SnO 2 @C@TiO 2 (Figure ). Energy‐dispersive X‐ray spectroscopy (EDS) mappings confirm the existence of Sn, O, Ti, and C in SnO 2 @C@TiO 2 (Figure 2h and 2i).…”

Insights into the Capacity and Rate Performance of Transition‐Metal Coordination Compounds for Reversible Lithium Storage

“…The first discharge and charge capacities were 2080 and 1098 mAh g −1 with an initial Coulombic efficiency (CE) of 52.76 % (Figure 2 a), and 1962 and 746 mAh g −1 with the initial CE of 38.02 % (Figure S7) for Co‐HIPA and Ni‐HIPA, respectively. The initial capacity loss of Co‐HIPA and Ni‐HIPA is mainly due to the formation of solid electrolyte interface (SEI) layers (Figure S8) [18, 19] . After 200 cycles, Co‐HIPA and Ni‐HIPA exhibited reversible charge capacities of 1043 and 532 mAh g −1 with the capacity retentions of 95.1 % and 71.4 %, respectively (Figure 2 b).…”

Insights into the Capacity and Rate Performance of Transition‐Metal Coordination Compounds for Reversible Lithium Storage

“…Thehighly stable Co-HIPAand Ni-HIPAwere studied for their lithium storage performance.T he first discharge and charge capacities were 2080 and 1098 mAh g À1 with an initial Coulombic efficiency (CE) of 52.76 %( Figure 2a), and 1962 and 746 mAh g À1 with the initial CE of 38.02 %(Figure S7) for Co-HIPAand Ni-HIPA, respectively.The initial capacity loss of Co-HIPAa nd Ni-HIPAi sm ainly due to the formation of solid electrolyte interface (SEI) layers (Figure S8). [18,19] After 200 cycles,C o-HIPAa nd Ni-HIPAe xhibited reversible charge capacities of 1043 and 532 mAh g À1 with the capacity retentions of 95.1 %and 71.4 %, respectively (Figure 2b). The cycling performance at different current densities was further tested.…”