Il-batteriji tal-litju jixtiequ jużaw materjali tal-anodi tal-grafita

(Il-batteriji tal-litju jixtiequ jużaw materjali tal-anodi tal-grafita)

Lithium-ion battery refers to a secondary battery system in which two different lithium intercalation compounds that can reversibly intercalate and deintercalation lithium ions are used as the battery's positive electrode and negative electrode, rispettivament. Waqt l-iċċarġjar, lithium ions are deintercalated from the positive electrode through the electrolyte and separator and embedded in the negative electrode; għall-kuntrarju, lithium ions are deintercalated from the negative electrode through discharge of the electrolyte the separator and embedded in the positive electrode. The negative electrode of the lithium-ion battery is made of harmful electrode active material, binder, and additives mixed to make a paste glue, li tinfirex b'mod uniformi fuq iż-żewġ naħat tal-fojl tar-ram, imnixxef, and rolled.

Advantages of graphite as anode material

Il-grafita hija allotrope tal-karbonju, u t-tnejn huma relatati mill-qrib. Il-grafita hija l-aktar forma stabbli ta 'karbonju. (Diamond huwa allotrope metastabbli tal-karbonju. Għalkemm l-ebusija tagħha hija ħafna ogħla mill-grafita, hija l-aktar sustanza iebsa fin-natura, iżda l-istabbiltà tagħha hija aktar baxxa minn dik tal-grafita.)

The word "graphite" comes from the Greek word "graphein," which is resistant to high temperature and corrosion, has good electrical conductivity, konduttività termali, u proprjetajiet kimiċi stabbli, and is lighter than aluminum. In addition to being used as anode material for lithium-ion batteries, high-quality graphite can also be used in different fields such as fuel cells, ċelloli solari, semikondutturi, light-emitting diodes, and nuclear reactors.

B'mod ġenerali, grafita għandha l-vantaġġi ta 'konduttività elettronika għolja, the small volume change of layered structure before and after lithium intercalation, high lithium intercalation capacity, and low lithium intercalation potential, u sar il-materjal tal-elettrodu negattiv tal-batterija tal-jone tal-litju kummerċjali mainstream.

How to get graphite?

Hemm żewġ modi kif tikseb grafita: wieħed huwa minerali naturali, u l-oħra hija s-sinteżi tal-qatran tal-faħam. Il-materjali tal-grafita użati fil-batteriji tal-jone tal-litju huma ġeneralment ippreparati bit-taħlit 55% grafita sintetika u 45% grafita naturali ta 'purità baxxa.

Manufacturers once favored synthetic graphite because the uniformity and purity of synthetic graphite were better than natural graphite. Issa mhux l-istess. The application of modern chemical purification methods makes it possible to obtain 99.9% grafita naturali pura wara trattament bis-sħana. B'kuntrast, grafita sintetika hija 99% pur, jagħmlu l-ewwel aktar popolari.

Meta mqabbel mal-grafita sintetika, Il-grafita naturali purifikata flake għandha kristallinità ogħla u tesibixxi konduttività elettrika u termali aħjar. Barra minn hekk, natural graphite is expected to reduce the production cost of lithium-ion batteries while achieving equal or better battery performance.

Fornitur tal-grafita ta 'kwalità għolja

Ġinġer Qamar & Star New Energy Technology Co., LTD, imwaqqfa f’Ottubru 17, 2008, hija intrapriża ta 'teknoloġija għolja impenjata li tiżviluppa, jipproduċu, ipproċessar, bejgħ, u servizzi tekniċi ta 'materjali tal-anodi tal-batterija tal-jone tal-litju. Wara aktar minn 10 snin ta 'żvilupp, il-kumpanija żviluppat gradwalment fi struttura ta 'prodott diversifikata bil-grafita naturali, grafita artifiċjali, grafita kompost, fażi intermedja, u materjali negattivi oħra (materjali tas-silikon-karbonju, eċċ.). Il-prodotti jintużaw ħafna f'enerġija diġitali high-end tal-jone tal-litju u batteriji tal-ħażna tal-enerġija. Jekk qed tfittex materjal tal-anodu tal-batterija tal-litju, ikklikkja fuq il-prodotti meħtieġa u ibgħatilna inkjesta：sales@graphite-corp.com

 

(Il-batteriji tal-litju jixtiequ jużaw materjali tal-anodi tal-grafita)