Silicon-based Anode Material Market Research Report Silicon-based Anode Material Industry: 2017 | Page 2

Global and China Silicon-based Anode Material
Industry Report, 2017-2020
Introduction:
At present, commercial lithium-ion battery anode materials are mostly based on graphite. High-end
graphite-based anode materials which have been su ccessfully developed and put into use, have
capacity of 365mAh/g, close to the theoretical capacity of graphite (372mAh/g), with compaction
density ranging at 1.7~1.75g/cm3. There is seldom an improvement in energy density of anode
materials in terms of capacity per gram and compaction density of graphite.
Moreover, in lithium-ion battery market, especially power battery market, requirements on energy
density of batteries are increasingly high. According to Chinese government’s plan for power battery
(as of 2020), specific energy of new lithium-ion power battery cell shall exceed 300Wh/kg and that of
the system shall be up to 260Wh/kg. In current stage, mainstream graphite-based anode materials
are hardly satisfying the needs of improving specific capacity of batteries. New high-capacity anode
materials such as Si-C composite are the future development trend.
Presently, a solution of Si-based materials doped with graphite is common for pure Si-based materials
which have great expansion and high costs in spite of energy density of up to 4200mAh/g, and more
doping renders higher concentration of silicon in the materials. Silicon carbon anode material (SiC)
and silicon oxide anode material (SiO) are the mainstream technical solutions at present.