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This was relatively a low capacity and caused Advantages of producing anode from
for the low performance of the LIB. Therefore, Hemp derived carbon comparing to
there was a need to discover a more potent graphite anode
material for anode in LIB. Simple process
Environmental-friendly
To improve the function of the LIB, significant Low cost
investigations have been carried out to derive Good solution for byproduct and waste
carbon from various biomasses. At that time, management
carbon was considered as the most successful Enhance the capacity of LIB
choice because of two main reasons; as an Improve the safety of LIB
alternative for waste management and due to Enhance the performance of LIB
economic benefits. It has been proven that Rapid preparation of anode material
carbon derived from biomass possesses a
favorable molecular structure for charge Future of Hemp derived carbon
storage and transport while providing higher Nowadays, the researchers are working
capacity than graphite. extensively with the aim of finding better
materials to use as battery power. Carbon
Hemp stem provides fibers with high content derived from hemp has already shown its
of cellulose, hemicellulose and low content of potency on this purpose. As it is highly
lignin. In the hemp stem, the content of sustainable and efficient, hemp-carbon
cellulose and hemicellulose is 58-72% and 66- batteries are recommended for future battery
91% in woody core and bast fibers powered vehicles. Could Hemp batteries will
respectively (Um et al., 2018). This cellulose be the hope of next generation of electric
and hemicellulose contain large amount of vehicles?
oxygen containing functional groups which
can transform easily into H2O, CO and CO2 Summary
by pyrolysis while producing micro pores. Hemp plant is an attractive precursor for
This natural porous structure of hemp stem Nano-porous carbon which has been prepared
provides the pathway to derive carbon from it. in an environmental-friendly manner with low
This hierarchically porous structure with cost. Its hierarchically porous structure paved
partial graphitic properties makes the carbon the way for the use as anode material in LIB.
derived from hemp to use directly as the anode The excellent specific capacity of it enhances
material in LIB. Carbon from hemp stem was the performance of LIB than using graphite.
prepared simply in an environmental-friendly This study is a remarkable breakthrough
manner with low cost. Activation agents such which proved the potency of Hemp derived
as water, ZnCl2 and H3PO4 were used to carbon on energy storage.
obtain well developed mesopores. The
activated carbon as anode material achieved a References
high reversible capacity of 495 mAh/g after Guan, Zhongxiang et al. (2019)
100 cycles at 0.2 0C (Guan et al., 2019). As a ‘Characterization and Preparation of Nano-
traditional treatment method, activation porous Carbon Derived from Hemp Stems as
treatment can effectively improve the porosity Anode for Lithium-Ion Batteries’, Nanoscale
of the material and increase the active site(Li Research Letters, 14(1), pp. 1–9.
et al., 2020). In addition to use of hemp
derived carbon in anode of LIB they were also Li, Z. et al. (2020) ‘Effect of Deep Cryogenic
used as an adsorbent for water vapor, as a Activated Treatment on Hemp Stem-Derived
catalyst for PET glycolysis and as a super Carbon Used as Anode for Lithium-Ion
capacitor electrode. Batteries’.
October 2022 11
