CNTs–Cu composite layer enhanced Sn–Cu alloy as high performance anode materials for lithium-ion batteries

Abstract

A Sn-Cu-CNTs composite anode with a CNTs-Cu transition layer has been successfully synthesized via an electrodeposition method. Different temperatures have been employed to heat-treat Sn-Cu-CNTs composites. After heat-treating at 200 C for 6 h, strong adherence is achieved between the Cu 6 Sn 5 -Cu 3 Sn-CNTs active material and the current collector. Good cycling performance (513.3 mA h g À1 after 100 cycles at 1 C) and superior rate capability (as high as 16 C) can be obtained due to the insertion of evenly distributed CNTs in the composite anode materials.

Electrodeposited Cu-Sn Alloy for Electrochemical CO2 Reduction to CO/HCOO−

“…All the catalysts exhibiting Cu diffraction peak originated from the substrate. Figure 3a shows that the main orientations of polycrystalline Cu 100 and Sn 100 exhibited Cu (111) and Sn (200) [33,34]. After CO 2 reduction at − 0.89 V vs. RHE for 30 min, Cu-Sn alloy catalysts showed changes in X-ray diffraction peaks.…”

Compositionally tuned NixSn alloys as anode materials for lithium-ion and sodium-ion batteries with a high pseudocapacitive contribution

“…[25][26][27][28][29][30] An additional strategy to improve stability is to alloy tin with non-active elements, reducing in this way the volume changes and potentially increasing the pseudocapacitive contribution. In this direction, bimetallic Sn-based allows such as Cu-Sn, [31][32][33] FeSn, [33][34][35] Co-Sn, [34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53] and Ni-Sn [17,33,[54][55][56] have been tested as base materials for LIB and/or SIB electrodes with excellent results.…”

Co–Sn Nanocrystalline Solid Solutions as Anode Materials in Lithium‐Ion Batteries with High Pseudocapacitive Contribution

“…One main approach is to alloy the active phase, Sn, with a second element that can buffer the volume changes . In this direction, Sn‐based alloys with Ni, Co, Fe, Cu, and Sb have demonstrated superior cycling performance than bare Sn anodes. Among the different Sn‐based alloys tested, Co–Sn electrodes have shown particularly promising performances as anode materials for LIBs .…”

“…One main approachi st oa lloy the active phase, Sn, with as econd elementt hat can buffer the volumec hanges. [12,13] In this direction, Sn-based alloys with Ni, [14][15][16][17] Co, [18][19][20][21][22][23][24][25][26][27][28][29][30] Fe, [31,32] Cu, [33,34] and Sb [35][36][37] have demonstrat-Co-Sn solid-solution nanoparticles with Sn crystal structure and tuned metal ratios were synthesized by af acile one pot solution-basedp rocedure involving the initial reduction of a Sn precursor followed by incorporation of Co within the Sn lattice. These nanoparticles were used as anode materials for Liion batteries.…”