A waste corn cob core-derived SiO 2 @ graphene-like carbon nanocomposite and its application in lithium-ion battery
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A waste corn cob core-derived SiO2 @ graphene-like carbon nanocomposite and its application in lithiumion battery Qiufen Wang1,* , Huifang Tian1, Juan Miao1, Chengli Zhang1, Jingyang Zhang1, Yanlei Zhang1, and Yibo Guo1 1
Henan Key Laboratory of Coal Green Conversion, College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China
Received: 25 July 2020
ABSTRACT
Accepted: 15 November 2020
A waste corn cob core-derived SiO2 @ graphene-like carbon nanocomposite (CCC) has been synthesized by a hydro-thermal and high-temperature carbonization process. The CCC material is carbonized at 900 °C (CCC-900). The SiO2 nanoparticle with a granule size of 100–200 nm could be grown on the graphene-like carbon nanosheets. The BET-specific surface area can be calculated to be 481.81 m2 g-1. When it is used as an anode material for lithium-ion battery, the CCC composite can display the foremost discharge capacity of 2051.5 mAh g-1 at 200 mA g-1 and the maintain capacity of 125 mAh g-1 after 200 cycles. The high foremost discharge capacity could be attributed to the synergistic effect of SiO2 nanoparticles and graphene-like sheets.
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Springer Science+Business
Media, LLC, part of Springer Nature 2020
1 Introduction Demand for energy is steadily increasing with the development of society and the progress of science and technology. Energy and environment problems have become a key topic that restricts the global development. Thus, exploring new-style energy materials and sustainable energy storages have become the hot spots of new energy fields. Rechargeable lithium-ion battery (LIB) has become one of the energy storage sources due to the high energy density and green environmental protection and long cycling life [1–3]. At present, most of the
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https://doi.org/10.1007/s10854-020-04901-7
anode materials for LIB are graphite materials, but their battery capacities have not gradually met the needs of the current energy requirements [4, 5]. Therefore, it is important to research the negative electrode materials with high capacity to solve the clean energy problem and realize sustainable development. China is both an agricultural country and a nation with a large population, and the amount of biomass wastes produced is billions of tons every year. The castoffs are optionally thrown out and set on fire, which not only may be wasteful of resources but also empoison the environment. Moreover, biomass wastes are the potential energy materials as a kind of
J Mater Sci: Mater Electron
raw carbon materials. Biomass wastes can be applied in enriching the soil [6–8], the fertilizers [9], the adsorbents [10–12], and the electrochemical devices [13, 14], and so on. More importantly, these biomassderived carbon anode materials have exhibited the promising feasibility. For example, the waste loofahderived carbon material has carbonized at 800 °C for 1 h in the argon atmosphere, and its foremost discharge capacity is * 697 mAh g-1, and the maintain capa
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