Rational design of coaxial MWCNTs@Si/SiOx@C nanocomposites as extending-life anode materials for lithium-ion batteries
Source abstract
Abstract
Abstract One-dimensional (1D) uniform multi-walled carbon nanotubes (MWCNTs)@Si/SiOx@C nanocomposites were prepared by the magnesiothermic reduction of MWCNT@SiO2 nanocables and subsequent carbon coating process. Through simply altering the acid-treatment conditions, SiOx were reserved on the surface of MWCNTs to seal and fix the Si nanoparticles, along with the carbon coating layer, the reducted Si nanoparticles (Si NPs) were entirely encapsulated in the 1D coaxial nanocomposites. Due to the multiple volume expansion limit effects of inner Si nanoparticles, the cycling stability has been greatly improved. When worked as anodes for lithium-ion batteries, the MWCNTs@Si/SiOx@C electrode exhibits better electrochemical properties than bulk Si and MWCNTs, as well as an extending cycle life of 500 cycles in comparsion to our previous MWCNTs@Si nanocomposites. It is believed that the MWCNTs can provide structural support and enhance the electronic mobility, while the SiOx and carbon buffer component would anchor the Si NPs firmly and accommodate the volume expansion of Si.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (39)
Show source-provided references
1. Challenges for rechargeable Li batteries10.1021/cm901452z ↗
2. Building better batteries10.1038/451652a ↗
3. Whittingham · Cheminform · 2004 · 35 · 427110.1002/chin.200450266 ↗
4. Stable Li-ion battery anodes by in-situ polymerization of conducting hydrogel to conformally coat silicon nanoparticles10.1038/ncomms2941 ↗
5. Preparation of silicon@silicon oxide core-shell nanowires from a silica precursor toward a high energy density Li-ion battery anode10.1021/am402930b ↗
6. Designing nanostructured Si anodes for high energy lithium ion batteries10.1016/j.nantod.2012.08.004 ↗
7. Silicon composite electrode with high capacity and long cycle life10.1149/1.3212894 ↗
8. Scalable fabrication of silicon nanotubes and their application to energy storage10.1002/adma.201201601 ↗
9. Crystalline-amporphous core-shell silicon nanowires for high capacity and high current battery electrodes10.1038/nnano.2007.411 ↗
10. Hollow porous silicon oxide nanobelts for high-performance lithium storage10.1016/j.jpowsour.2014.10.180 ↗
11. High performance carbon nanotube-Si core-shell wires with a rationally structured core for lithium ion battery anodes10.1039/c3nr33683b ↗
12. Large-scale synthesis of Si@C three-dimensional porous structures as high-performance anode materials for lithium-ion batteries10.1039/C4TA03448A ↗
13. Three-dimensional interconnected network of graphene-wrapped porous silicon spheres: in situ magnesiothermic-reduction synthesis and enhanced lithium-storage capabilities10.1021/am405725u ↗
14. Highly Reversible and Fast Lithium Storage in Graphene-Wrapped SiO2 Nanotube Network10.1002/celc.201402370 ↗
15. High capacity retention Si/silicide nanocomposite anode materials fabricated by high-energy mechanical milling for lithium-ion rechargeable batteries10.1016/j.jpowsour.2015.01.122 ↗
16. Electrospray synthesis of nano-Si encapsulated in graphite/carbon microplates as robust anodes for high performance lithium-ion batteries10.1039/C7SE00542C ↗
17. Novel core-shell structured Si/S-doped-carbon composite with buffering voids as high performance anode for Li-ion batteries10.1039/C6RA26247C ↗
18. Mussel-inspired conductive polymer binder for Si-alloy anode in Lithium-ion batteries10.1021/acsami.7b14645 ↗
19. Ethylene carbonate-free fluoroethylene carbonate-based electrolyte works better for freestanding Si-based composite paper anodes for Li-ion batteries10.1016/j.jpowsour.2018.02.013 ↗
20. Embedded Si/Graphene composite fabricated by magnesium-thermal reduction as anode material for Lithium-ion batteries10.1186/s11671-017-2400-6 ↗
21. Nano/micro-structured Si/CNT/C composite from nano-SiO2 for high power lithium ion batteries10.1039/C4NR03948C ↗
22. Graphene-encapsulated Si on ultrathin-graphite foam as anode for high capacity lithium-ion batteries10.1002/adma.201301530 ↗
23. Carbon nanotube (CNT)-based composites as electrode material for rechargeable Li-ion batteries: a review10.1016/j.compscitech.2011.11.019 ↗
24. A micro-sized Si-CNT anode for practical application via a one-step, low-cost and green method10.1039/C7RA11350A ↗
25. Carbon-silicon composite anode electrodes modified with MWCNT for high energy battery applications10.1016/j.apsusc.2018.01.102 ↗
26. Facile synthesis of uniform MWCNT@Si nanocomposites as high-performance anode materials for lithium-ion batteries10.1016/j.jallcom.2014.11.032 ↗
27. A critical SiOx layer on Si porous structures to construct highly-reversible anode materials for lithium-ion batteries10.1039/C7CC02732J ↗
28. Steaming multiwalled carbon nanotubes via acid vapour for controllable nanoengineering and the fabrication of carbon nanoflutes10.1039/c1cc10525f ↗
29. Improving thermal conductivity while retaining high electrical resistivity of epoxy composites by incorporating silica-coated multi-walled carbon nanotubes10.1016/j.carbon.2010.09.047 ↗
30. Low-temperature pseudomorphic transformation of ordered hierarchical macro-mesoporous SiO2/C nanocomposite to SiC via magnesiothermic reduction10.1021/ja1001136 ↗
31. Low-temperature formation of nanocrystalline β-SiC with high surface area and mesoporosity via reaction of mesoporous carbon and silicon powder10.1016/j.micromeso.2005.02.022 ↗
32. Characterization methods of carbon nanotubes: a review10.1016/j.mseb.2005.02.046 ↗
33. Nano-drilled multiwalled carbon nanotubes: characterizations and application for LIB anode materials10.1039/c2jm34684b ↗
34. Facile synthesis of graphene-silicon nanocomposites with an advanced binder for high-performance lithium-ion battery anodes10.1016/j.ssi.2013.11.020 ↗
35. Fabrication and lithium storage performance of sugar apple-shaped SiOx@C nanocomposite spheres10.1016/j.jpowsour.2015.04.127 ↗
36. Quartz (SiO2): a new energy storage anode material for Li-ion batteries10.1039/c2ee00003b ↗
37. Critical thickness of SiO2 coating layer on core@Shell bulk@nanowire Si anode materials for Li-ion batteries10.1002/adma.201301454 ↗
38. In Situ growth of mesoporous SnO2 on multiwalled carbon nanotubes: a novel composite with porous-tube structure as anode for Lithium batteries10.1002/adfm.200600739 ↗
39. Sulphur-polypyrrole composite positive electrode materials for rechargeable lithium batteries10.1016/j.electacta.2005.12.046 ↗