Will graphene be a breakthrough in lithium battery materials? Graphene
lithium-ion batteries are emerging.
Since this year, the market has been enthusiastic about graphene materials,
and many manufacturers and scientific research institutions are making more and
more attempts to apply graphene as a new battery material. He Shiguo, the person
in charge of the Alene Nano project, once said that the battery cathode material
of Alene Nano is the core technology of pure electric vehicle batteries. So,
will graphene be a breakthrough in lithium battery materials? Can you provide
one more solution option for the current problems encountered by lithium-ion
batteries?
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Graphene lithium batteries emerge
Graphene has a unique two-dimensional structure, excellent performance and
various potential application values. Graphene-based nanomaterials are an
attractive electrode material for lithium-ion batteries, especially for
high-energy-density and high-power-density batteries. The graphene battery is a
new battery developed by utilizing the characteristics of lithium ions that
shuttle rapidly and massively between the graphene surface and the
electrode.
Interestingly, in addition to Zhejiang Alian Nano Technology Co., Ltd.’s
investment in building a graphene base, Yulong Co., Ltd. also recently announced
an increase in investment in graphene production. It is reported that Yulong
Co., Ltd. will increase its investment by RMB 300 million in Ningxia Hanyao
Graphene Energy Storage Material Technology Co., Ltd., which will be mainly used
to speed up the construction and production of Ningxia Hanyao lithium-ion
battery graphene ternary cathode material and conductive slurry project
production line. Drive production capacity and release to promote the
development of new business.
The layout of graphene lithium-ion batteries by relevant manufacturers in
the lithium battery industry chain may accelerate the emergence of graphene
lithium-ion batteries.
In the context of national policies leading the development of lithium
batteries towards high energy density, graphene materials are a good candidate
for the next generation of battery materials. Graphene has always been
considered a representative material among the new generation of materials.
Graphene peeled from graphite is a thin film of carbon atoms, which is
characterized by high physical and chemical stability. The material is 100 times
more conductive than copper and more than 140 times faster than silicon. This is
why graphene ball batteries charge five times faster than existing rechargeable
batteries. With its excellent material properties, graphene is favored by
research institutions and lithium battery companies.
At the beginning of this year, we learned from the website of the Ministry
of Science and Technology that South Korea's "Central Daily News" reported that
a research team at Samsung Electronics Institute of Technology successfully
developed a new battery material "graphene balls" that have a charging capacity
45% higher than existing lithium-ion batteries. The speed is increased by more
than 5 times. Researchers have discovered that after adding silica to the
high-strength, highly conductive graphene material, graphene can be synthesized
in large quantities. The synthesized graphene exhibits a three-dimensional shape
like popcorn, so it is called "graphene ball" , using this graphene ball
material as anode protective film and cathode material for lithium-ion batteries
can increase charging capacity, shorten charging time, and ensure
high-temperature stability. South Korea plans to commercialize "graphene ball"
lithium electronic batteries within five years.
At the end of March this year, the graphene new energy industrialization
project settled in Yinchuan Economic and Technological Development Zone plans to
invest 8.5 billion yuan to implement projects with an annual output of 30,000
tons of graphene-modified ternary materials and 10,000 tons of graphene
conductive slurry. 5 projects, after completion, can form a basic industrial
chain of graphene energy storage materials in Yinchuan City, and form an annual
output value of more than 15 billion yuan.
Not long ago, the Massachusetts Institute of Technology in the United
States has successfully developed a flexible photovoltaic panel with a graphene
nanolayer on the surface, which can greatly reduce the cost of manufacturing
transparent deformable solar cells. This kind of battery may be used in night
vision goggles, Used in cameras and other small digital devices.
Although graphene batteries are favored by many manufacturers and
investors, there are also objections. First of all, the cost and process
complexity are high. Some scholars believe that graphene batteries may only
exist in laboratories, and commercialization is still relatively difficult. Oak
Ridge National Laboratory and the well-known graphene industry manufacturer
Vorbeck have disclosed the research results of graphene. They believe that the
reproducibility of graphene work is often very poor, and the technology
developed is seriously out of touch with practical goals. This phenomenon has
been widely criticized by knowledgeable people in the scientific research
community and the industry.
Materials are one of the three pillars of modern civilization. The
discovery of new materials and their cross-field applications play a vital role
in the development of science and technology. The battery industry has evolved
from traditional lithium batteries to later cobalt-lithium batteries, to today's
high-nickel batteries. Graphene may be a breakthrough for the next generation of
materials for power batteries. The development of battery technology is also
promoting the iteration of various electronic terminal products.
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