Substantial LIB Anode Performance of Graphitic Carbon Nanoflakes Derived from Biomass Green-Tea Waste

被引：38

作者：

Sekar, Sankar ^{[1
,2
]}

Lee, Youngmin ^{[1
,2
]}

Kim, Deuk Young ^{[1
,2
]}

Lee, Sejoon ^{[1
,2
]}

机构：

[1] Dongguk Univ Seoul, Dept Semicond Sci, Seoul 04620, South Korea

[2] Dongguk Univ Seoul, Quantum Funct Semicond Res Ctr, Seoul 04620, South Korea

来源：

NANOMATERIALS | 2019年 / 9卷 / 06期

基金：

新加坡国家研究基金会;

关键词：

biomass; mesoporous graphitic carbon; anode; lithium-ion battery; HIERARCHICAL POROUS CARBON; LITHIUM-ION BATTERIES; ACTIVATED CARBONS; HARD CARBON; LOW-COST; STORAGE; NANOSHEETS; ELECTRODE; CAPACITY; FIBERS;

D O I：

10.3390/nano9060871

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Biomass-derived carbonaceous constituents constitute fascinating green technology for electrochemical energy-storage devices. In light of this, interconnected mesoporous graphitic carbon nanoflakes were synthesized by utilizing waste green-tea powders through the sequential steps of air-assisted carbonization, followed by potassium hydroxide activation and water treatment. Green-tea waste-derived graphitic carbon displays an interconnected network of aggregated mesoporous nanoflakes. When using the mesoporous graphitic carbon nanoflakes as an anode material for the lithium-ion battery, an initial capacity of similar to 706 mAh/g and a reversible discharge capacity of similar to 400 mAh/g are achieved. Furthermore, the device sustains a large coulombic efficiency up to 96% during 100 operation cycles under the applied current density of 0.1 A/g. These findings depict that the bio-generated mesoporous graphitic carbon nanoflakes could be effectively utilized as a high-quality anode material in lithium-ion battery devices.

引用

页数：10

共 52 条

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