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Negative?electrode?materials?refer?to?the?raw?materials?constituting?the?negative?electrode?in?batteries?(such?as?power?batteries,?consumer?electronics,?energy?storage?equipment?and?other?lithium?battery?fields).?It?mainly?includes?carbon?materials?and?non-carbon?materials.?Carbon?materials?are?mainly?divided?into?graphite?and?amorphous?carbon,?mainly?including?natural?graphite,?artificial?graphite,?mesophase?carbon?microspheres?(hard?carbon),?soft?carbon,?etc.?other?non-carbon?anode?materials?mainly?include?silicon-based?materials,?tin?based?materials,?titanium?based?materials,?nitrides,?etc.

Among?them,?the?artificial?graphite?anode?material?is?more?in?line?with?the?requirements?of?power?battery?and?energy?storage?battery?for?cycle?life?and?safety,?so?it?will?still?be?the?mainstream?application?direction?of?power?battery?and?energy?storage?battery?in?the?future.?In?natural?graphite,?beiteri?has?basically?formed?a?monopoly,?mainly?because?the?product?performance?and?average?sales?price?are?more?competitive.

Among?them,?the?industrialization?of?silicon-based?anode?continues?to?accelerate,?and?it?is?expected?to?be?large-scale?and?large-scale?after?2022.?From?the?perspective?of?enterprise?layout,?beiteri?has?started?to?develop?silicon-based?anode?since?2006,?passed?Samsung?certification?and?shipped?in?batches?in?13?years,?and?successfully?entered?the?industrial?chain?of?Panasonic,?LG?and?Tesla.?According?to?the?R?&?D?Progress?of?various?enterprises,?it?is?expected?that?silicon-based?anode?will?be?rapidly?increased?after?2022.?With?high?specific?capacity?and?wide?resources,?silicon-based?anode?is?one?of?the?most?promising?anode?materials.?At?present,?the?gram?capacity?of?high-end?graphite?has?reached?360-365mah/g,?close?to?the?theoretical?gram?capacity?of?372mah/g,?which?is?difficult?to?meet?the?growing?requirements?of?high?energy?density.?The?theoretical?specific?capacity?of?silicon-based?anode?is?up?to?4200mah/g,?which?is?an?ideal?alternative?material?for?graphite?anode.?At?present,?the?commercialized?silicon-based?anode?materials?mainly?include?carbon?coated?silicon?oxide,?nano?silicon?carbon,?amorphous?silicon?alloy?and?silicon?nanowires.?Among?them,?carbon?coated?silicon?oxide?and?nano?silicon?carbon?are?the?two?most?commercialized?silicon-based?anode?materials.