2021 China's top ten scientific progress released two chemical achievements selected

On February 28, the High-Tech Research and Development Center (Basic Research Management Center) of the Ministry of Science and Technology released the top ten scientific progresses in China in 2021
.
The two chemical achievements of "synthesis from carbon dioxide to starch" and "large-scale preparation of high-performance fiber lithium-ion batteries" were selected
.

For these 10 major scientific and technological progress, 30 achievements were selected from 310 recommended scientific research progresses, and then more than 3,500 well-known experts and scholars including academicians of the Chinese Academy of Sciences, Chinese Academy of Engineering, and directors of the State Key Laboratory conducted online voting and finally produced the results.

.

Among them, "synthesis from carbon dioxide to starch" was completed by Ma Yanhe's research team from Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences
.
By designing an unnatural pathway from carbon dioxide to starch synthesis from scratch, the research team used modular reaction adaptation and protein engineering methods to solve the problems of computer pathway thermodynamic matching, metabolic flow balance and by-product suppression, and overcome artificial pathway assembly and leveling.
Finally, the artificial starch synthesis pathway (ASAP) composed of 11 core reactions was formed
.
This pathway couples chemical catalysis and biocatalysis, and achieves artificial total synthesis from carbon dioxide and hydrogen to starch molecules in the laboratory without relying on plant photosynthesis, making starch production from traditional agricultural planting mode to industrial workshop production A paradigm shift is possible and original breakthroughs are made
.

"Achieving large-scale preparation of high-performance fiber lithium-ion batteries" was completed by Peng Huisheng and Chen Peining of Fudan University
.
The research team systematically revealed the variation law of the internal resistance of the fiber lithium ion battery with the length, effectively solved the problem of the interface stability between the active material and the fiber electrode, and continuously constructed a new type of fiber polymer lithium with good safety and comprehensive electrochemical performance.
The ion battery meets the requirements of highly integrated and flexible development of electronic products
.
The fiber lithium-ion battery system developed in this research has an electrochemical performance comparable to that of commercial lithium-ion batteries, with better stability and safety
.
The fiber-polymer lithium-ion battery with a length of 1 meter can continuously and effectively supply power for wearable electronic devices such as smartphones, wristbands, and heart rate monitors for a long time
.
They also established the world's first fiber lithium-ion battery production line, realizing its large-scale continuous production
.

At the same time, among the top ten scientific and technological progress in China are "Mars exploration mission Tianwen-1 probe successfully landed on Mars", "Chinese space station Tianhe core module was successfully launched, Shenzhou 12th and 13th manned spacecraft were successfully launched and cooperated with Tianwen.
" Successfully completed docking with the core module", "Chang'e-5 lunar samples reveal the mystery of lunar evolution", "reveal the mechanism of SARS-CoV-2 escaping antiviral drugs",
etc.

The selection of the top ten scientific advances in China has been held for 17 sessions so far.
It aims to showcase the scientific progress of major basic research in China, stimulate the scientific enthusiasm and dedication of the scientific and technological workers, carry out the popularization of basic research science, and promote public understanding, care and support for basic research.
, to create a good scientific atmosphere in the whole society
.