BIOMASS-DERIVED POROUS CARBON FROM AGAR AS AN ANODE MATERIAL FOR LITHIUM-ION BATTERIES
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Date
2021-12-22
Authors
Issatayev, Nurbolat
Kalimuldina, Gulnur
Nurpeissova, Arailym
Bakenov, Zhumabay
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI
Abstract
New porous activated carbons with a high surface area as an anode material for lithium-ion batteries (LIBs) were synthesized by a one-step, sustainable, and environmentally friendly method. Four chemical activators—H2SO4, H3PO4, KOH, and ZnCl2—have been investigated as facilitators of the formation of the porous structure of activated carbon (AC) from an agar precursor. The study of the materials by Brunauer–Emmett–Teller (BET) and scanning electron microscopy (SEM) methods revealed its highly porous meso- and macro-structure. Among the used chemical activators, the AC prepared with the addition of KOH demonstrated the best electrochemical performance upon its reaction with lithium metal. The initial discharge capacity reached 931 mAh g−1 and a reversible capacity of 320 mAh g−1 was maintained over 100 cycles at 0.1 C. High rate cycling tests up to 10 C demonstrated stable cycling performance of the AC from agar.
Description
Keywords
activated carbon, agar, anode, lithium-ion battery, chemical activators, Type of access: Open Access
Citation
Issatayev, N., Kalimuldina, G., Nurpeissova, A., & Bakenov, Z. (2021). Biomass-derived porous carbon from agar as an anode material for lithium-ion batteries. Nanomaterials (Basel, Switzerland), 12(1), 22. https://doi.org/10.3390/nano12010022