Everyone is familiar with precious metals, such as gold, platinum, silver, etc., which usually appear as high-end accessories. In fact, precious metals are also widely used in modern industry.
Dr. Shi Zhongliang, CTO of the "Micro-Nano Porous Precious Metals" R&D team of China SDSZ Micro-Nano Structure Material Technology Company, led the team to truly discover the industrial value of precious metals. After years of in-depth research and technological innovation, the SDSZ team invented the world's leading manufacturing method for porous new materials, and has now authorized seven invention patents. Committed to building a world brand in the high-end application field of micro-nano porous precious metal materials.
On June 13 this year, the China (Qingdao) Overseas Talent Innovation and Entrepreneurship Project Competition Roadshow and signing ceremony was held in Qingdao West Coast New District. Among them, SDSZ's micro-nano porous precious metal project stood out from the East New York Division and won the third prize in the finals.
Shi Zhongliang, CTO of SDSZ, has received double Ph.D degrees from Southeast University in China and McGill University in Canada. Shi Zhongliang told Hay Think that he has studied and worked in the United States, Canada, Japan and South Korea for more than ten years.
Product to solve 5G mobile phone fever
The porous metal nickel invented by the SDSZ team has been widely used in China’s major national defense and aerospace equipment since 2015. The use of porous nickel as a capillary wick, combined with the transfer of the latent heat of the phase change of the liquid cooling medium, solves the problem of electronic devices. The problem of high-power thermal control and lightweight equipment.
The ultra-thin copper foam with controllable micro-nano structure is preparing for mass production, which will meet the needs of core materials for efficient, fast and ultra-thin thermal control devices under the different power requirements of 5G mobile phones, notebooks, Pads and servers .
"As for the heat generation of mobile phones, especially 5G mobile phones, everyone should have a deep feeling. The thermal power of the chip is generally above 5W. If our ultra-thin foamed copper is used, the thermal control device can be made with higher heat dissipation power and is manufactured on a large scale. The yield rate is high, and the structure can be as thin as 0.25 mm, meeting the mobile phone's continuous pursuit of ultra-thin and beautiful development requirements." Shi Zhongliang said.
Large-scale application in the field of new energy
“The porous, micro-nano, and ultra-light new materials we produce are currently the world’s first and have achieved large-scale production and application. They have complete independent intellectual property rights and material pricing power. They can be applied to major defense and aerospace equipment, semiconductor electronic components, Energy conservation, environmental protection, chemistry and chemical engineering, biomedicine and other fields, especially in the field of new energy such as solid-state batteries and hydrogen fuel cells, will have large-scale application requirements. Because these new micro-nano porous materials have super large specific surface areas and graded pore diameters The structure, with good capillary characteristics, coupled with the ultra-thin structure, can simultaneously take into account the comprehensive characteristics of rapid heat dissipation, electromagnetic shielding, and reduction of stress and deformation during the application of new energy battery electrodes. "Shi Zhongliang particularly emphasized that with With the advent of the era of intelligence, people need more intelligent portable electronic equipment, and intelligence means that the computing power of the equipment is explosively improved, and the chip must perform more calculations and efficient heat conduction in a shorter time. This requires our materials to act as capillary wicks and liquid cooling media for phase change transfer in porous copper, just like "electronic blood", which interprets the core role of micro-nano porous metals that facilitate the liquid-cooled phase change process to improve and Improve the requirements for chip thermal management in the intelligent era, and meet the improvement of energy density and safety of next-generation mobile power supplies.
Nano silver for protective equipment
Shi Zhongliang said that the greatest value of precious metal engineering applications lies in the realization of its micro-nano and porosity, because the porous precious metal with micro-nano pore size fully demonstrates its structural and functional characteristics, and exerts its excellent characteristics such as large specific surface area. It embodies low usage and good functions, and is widely used in high-end industries.
So, where are the main applications of micro-nano porous precious metals? Shi Zhongliang introduced: The first is the application of new energy, mainly hydrogen energy and batteries. Secondly, in the application of IT chip packaging, precious metals, especially gold and silver, their micro-nano-porosity will really help improve the interface bonding effect between the chip and the substrate, reflecting its characteristics and value in thermal control, shielding and packaging. .
In addition, it can be used in biological and medical sterilization. This time the new coronavirus has made everyone fully aware of the harm of viruses and bacteria and truly understand the importance of sterilization. Among them, both nano-silver and nano-gold have good bactericidal effects, so this new coronavirus epidemic has truly enhanced the value of nano-precious metals. Among them, silver is the best, which can kill more than 650 kinds of bacteria. “Nano-silver is used more or less in various protective equipment, even some of our masks. Our ultra-thin silver foam sheet, like a band-aid, can be directly applied to the wounds of diabetic patients. The key is to heat up after use. The treatment can be recycled and the effect is better than any other dressing." Shi Zhongliang said.
Hay Think understands that the SDSZ R&D team is committed to digging and solving the core problem of "value-added" in the precious metal application process. By forming a micro-nano porous structure, it fully demonstrates and exerts its excellent characteristics such as a large specific surface area to strengthen China's micro-nano porous structure. The leading position in the field of new materials has truly realized the market demand for high-end and high value-added precious metal materials and the global pricing power issues.
Talking about the future development direction, Shi Zhongliang is full of expectations, "We will work hand in hand with colleagues at home and abroad to build a world brand in the high-end application field of micro-nano porous precious metal materials!"