Supersonically Sprayed Carbon-Coated Bimetallic Zn2SnO4 with Reduced Graphene Oxide for Rapid-Charging, Binder-Free, and Long-Term-Stable Lithium-Ion-Battery Anodes
نویسندگان
چکیده
High capacity, rapid-charging, and long-term recyclability are the essential characteristics of high-performance lithium-ion battery (LIB) electrodes, which particularly important in electric vehicle industry. Bimetallic Zn2SnO4 nanoparticles wrapped carbon shells were supersonically sprayed with reduced graphene oxide (rGO) nanosheets to fabricate binder-free, long-term-stable LIB anodes. The fabricated Zn2SnO4/C@rGO composite exhibited high capacity retention specific over a wide range current densities. was first metal oxides (ZnO SnO2) then metals (Zn Sn) during lithiation process. successively alloyed Li+ ions, turn formed LiZn LiSn. These cyclic conversions alloying processes enhanced performance LIBs, resulting 1126 mAh⋅g-1 after 400 cycles at density 1000 mA·g-1; such indicates rapid-charging capability agglomeration identical particles cycling process by introducing bimetallic Zn2SnO4, ZnO SnO2 cycle. Metal formation through conversion subsequent caused pulverization SnO2, whose mixture favorably alleviated owing distinct grain boundaries SnO2. In addition, confined within shell, originated from introduction polyvinylpyrrolidone. shell further particle for Zn2SnO4/C@rGO, is identified as optimal case, yielding 106% reversible mA⋅g-1 cycles.
منابع مشابه
Adaptable silicon-carbon nanocables sandwiched between reduced graphene oxide sheets as lithium ion battery anodes.
Silicon has been touted as one of the most promising anode materials for next generation lithium ion batteries. Yet, how to build energetic silicon-based electrode architectures by addressing the structural and interfacial stability issues facing silicon anodes still remains a big challenge. Here, we develop a novel kind of self-supporting binder-free silicon-based anodes via the encapsulation ...
متن کاملPorous CuCo2O4 nanocubes wrapped by reduced graphene oxide as high-performance lithium-ion battery anodes.
A composite of porous CuCo2O4 nanocubes well wrapped by reduced graphene oxide (rGO) sheets has been synthesized by a facile microwave-assisted solvothermal reaction and applied as anode in lithium ion batteries (LIBs). The porous structure of the CuCo2O4 nanocubes not only provides a high surface area for contact with the electrolyte, but also assists by accommodating volume change upon chargi...
متن کاملSn- and SnO2-Graphene Flexible Foams Suitable as Binder- Free Anodes for Lithium Ion Batteries
With the objective of developing new advanced composite materials that can be used as anodes for lithium ion batteries (LIBs), herein we describe the synthesis of a novel three dimensional (3D) macroporous foams formed by reduced graphene oxide (rGO) and submicron tin-based particles. The aerogels were obtained by freeze/freeze-drying a suspension of graphene oxide (GO) in the presence of a tin...
متن کاملCrumpled Graphene-Encapsulated Si Nanoparticles for Lithium Ion Battery Anodes.
Submicrometer-sized capsules made of Si nanoparticles wrapped by crumpled graphene shells were made by a rapid, one-step capillary-driven assembly route in aerosol droplets. Aqueous dispersion of micrometer-sized graphene oxide (GO) sheets and Si nanoparticles were nebulized to form aerosol droplets, which were passed through a preheated tube furnace. Evaporation-induced capillary force wrapped...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Energy Research
سال: 2023
ISSN: ['0363-907X', '1099-114X']
DOI: https://doi.org/10.1155/2023/3553521