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Article source: Frontiers of Polymer Science? As a zero-dimensional carbon nanomaterial, carbon dots (CDs, size less than 10 nm) have the advantages of low toxicity, good chemical stability, and abundant surface groups.
They have been widely used in biomedicine.
, Optoelectronic devices, catalytic products and energy storage devices
.
However, there are few high-efficiency and low-cost synthesis methods for CDs, and the difficulty in synthesis and low yield also limit its large-scale application
.
In order to meet the needs of industrialization, especially in terms of energy storage, it is still a challenge to produce CDs quickly and efficiently
.
In order to solve this problem, the team of Professor Hou Hongshuai of Central South University proposed a method for large-scale preparation of CDs through aldol condensation reaction under normal temperature and pressure
.
This method can obtain 1.
083 kg of carbon points in 2 h, which is cheap and efficient
.
In addition, the author also prepared a functionalized nitrogen-doped carbon fiber (NCF) material, which has excellent electrochemical performance as the anode of a potassium ion battery
.
Related research was published on "ACS Nano" with the title "Kilogram-Scale Synthesis and Functionalization of Carbon Dots for Superior Electrochemical Potassium Storage"
.
Highlights of the article: 1.
The kilogram-scale synthesis of CDs was achieved through an efficient and low-cost aldol condensation reaction, that is, 1.
083 kg of CDs can be obtained within 2 h
.
? 2.
Compared with CF400 and CF700, NCF700 has the highest conductivity, up to 0.
105 S cm?1
.
? 3.
NCF700 has good electrochemical performance as the anode of potassium ion battery
.
At a current density of 100 mA g?1, a capacity of 246.
6 mAh g?1 can be maintained after 100 cycles
.
When the current density is restored from 2000 mA g?1 to 100 mA g?1, the specific capacity can reach 230.
1mAh g?1
.
? Figure 1 Schematic diagram of the synthesis process of CDs Figure 2 Structural characterization of CDs
They have been widely used in biomedicine.
, Optoelectronic devices, catalytic products and energy storage devices
.
However, there are few high-efficiency and low-cost synthesis methods for CDs, and the difficulty in synthesis and low yield also limit its large-scale application
.
In order to meet the needs of industrialization, especially in terms of energy storage, it is still a challenge to produce CDs quickly and efficiently
.
In order to solve this problem, the team of Professor Hou Hongshuai of Central South University proposed a method for large-scale preparation of CDs through aldol condensation reaction under normal temperature and pressure
.
This method can obtain 1.
083 kg of carbon points in 2 h, which is cheap and efficient
.
In addition, the author also prepared a functionalized nitrogen-doped carbon fiber (NCF) material, which has excellent electrochemical performance as the anode of a potassium ion battery
.
Related research was published on "ACS Nano" with the title "Kilogram-Scale Synthesis and Functionalization of Carbon Dots for Superior Electrochemical Potassium Storage"
.
Highlights of the article: 1.
The kilogram-scale synthesis of CDs was achieved through an efficient and low-cost aldol condensation reaction, that is, 1.
083 kg of CDs can be obtained within 2 h
.
? 2.
Compared with CF400 and CF700, NCF700 has the highest conductivity, up to 0.
105 S cm?1
.
? 3.
NCF700 has good electrochemical performance as the anode of potassium ion battery
.
At a current density of 100 mA g?1, a capacity of 246.
6 mAh g?1 can be maintained after 100 cycles
.
When the current density is restored from 2000 mA g?1 to 100 mA g?1, the specific capacity can reach 230.
1mAh g?1
.
? Figure 1 Schematic diagram of the synthesis process of CDs Figure 2 Structural characterization of CDs
