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src="https://tyunfile.71360.com/UploadFile/scmchem/637361321652832031/4016805.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3wwdfro" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/scmchem/637361321652832031/4016805.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="08gdkct" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>ARKEMA隔膜涂層PVDF產(chǎn)品規(guī)格,二次儲(chǔ)能新能源材料</p><p><span>***更新：</span>2021-02-02 00:17:32</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="qkm3rtf" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海匯平化工有限公司</a></p><p><span>聯(lián)系人：</span>上海匯平</p><p><span>郵箱: </span>inquire@scmchem.com</p><p><span>電話: </span>13817143597</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://www.scmchem.com</p><p><span>手機(jī): </span>021-64186121</p><p><span>地址: </span>上海市閔行區(qū)滬閔路6088號(hào)12層1-7室</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="yspbykh" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="tdf8qsu" class="box"><p><p style="text-indent:25px">鋰離子電池材料的充放電原理，電池有兩極：正極是鋰化合物，負(fù)極為石墨。充電放電都是電能和化學(xué)能的相互轉(zhuǎn)換，在鋰在正負(fù)極運(yùn)動(dòng)過程中，也在變成不同的化合物。我們可以把鋰看作是裝有電荷的小車：在充電時(shí)，ARKEMA隔膜涂層PVDF產(chǎn)品規(guī)格，由于電場(chǎng)作用使小車全部開到負(fù)極儲(chǔ)存下一定的能量（鋰嵌入到負(fù)極的石墨碳層微孔）；在放電時(shí)，這些帶著電荷的鋰小車由于發(fā)生化學(xué)反應(yīng)，又跑到了正極（鋰的脫嵌，使正極處于富鋰狀態(tài)）。在這個(gè)過程中形成電流供電。理想狀態(tài)下，ARKEMA隔膜涂層PVDF產(chǎn)品規(guī)格，只要正負(fù)極材料的化學(xué)結(jié)構(gòu)基本不發(fā)生變化，ARKEMA隔膜涂層PVDF產(chǎn)品規(guī)格，電池充放電的可逆性很好，鋰離子電池材料就能保證長(zhǎng)時(shí)間循環(huán)。鋰離子電池材料無記憶效應(yīng)、循環(huán)特性好、可快速放電。ARKEMA隔膜涂層PVDF產(chǎn)品規(guī)格</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="ARKEMA隔膜涂層PVDF產(chǎn)品規(guī)格,二次儲(chǔ)能新能源材料" src="https://tyunfile.71360.com/UploadFile/scmchem/637361321652832031/4016805.png"></div><p style="text-indent:25px">以往的鎳鎘、鎳氫電池,使用的電解液是水溶液體系,粘接劑可以使用PVA,CMC等水溶性高分子村料,或PTFE的水分散乳液。鋰離子蓄電池電解液是極性大(因此溶解能力和溶脹能力高)的碳酸酯類有機(jī)溶劑體系,粘接劑必須能耐碳酸酯(至少是不溶解),必須滿足在電化學(xué)環(huán)境中的穩(wěn)定性,在負(fù)極中處于鋰的負(fù)電位下不被還原,在正極中發(fā)生過充電等有氧產(chǎn)生的情況下不發(fā)生氧化。鋰離子電池中的特點(diǎn)是伴隨充放電過程,鋰在活性物質(zhì)中的嵌入一脫出引起活性物質(zhì)的膨脹一收縮(如石墨的層間距變化達(dá)到10%-11%),要求粘接劑對(duì)此能夠起到緩沖作用。ARKEMA隔膜涂層PVDF產(chǎn)品規(guī)格SCM鋰離子電池材料供應(yīng)商Chemours（科慕）提供的產(chǎn)品有電解液表面活性劑。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="ARKEMA隔膜涂層PVDF產(chǎn)品規(guī)格,二次儲(chǔ)能新能源材料" src="https://tyunfile.71360.com/UploadFile/scmchem/637361321375732422/3549210.png"></div><p style="text-indent:25px">鋰離子電池材料是近10年高技術(shù)研究的重要成果之一，表示著化學(xué)電源發(fā)展的先進(jìn)水平。由于這一新體系兼具高比能量、長(zhǎng)循環(huán)壽命以及環(huán)境友好等優(yōu)勢(shì)，現(xiàn)已成為各類便攜式電子產(chǎn)品的主要配套電源，在移動(dòng)場(chǎng)合具有良好的優(yōu)勢(shì)，目前鋰離子電池材料的全球年需求量已達(dá)13億只，擁有每年270億美元的銷售額，毫無疑問是充電電池市場(chǎng)的主導(dǎo)者之一。隨著鋰離子電池材料新材料的研發(fā)、電池制作技術(shù)的創(chuàng)新以及眾多科研機(jī)構(gòu)和企業(yè)的參與，鋰離子電池材料的性能正日益提高，電池成本日益降低，電池的安全性能也得到極大提高，鋰離子電池材料在電動(dòng)汽車領(lǐng)域正逐步顯示出應(yīng)用優(yōu)勢(shì)。</p><p style="text-indent:25px">鋰離子電池材料電壓高，重量輕。一個(gè)單體電池平均電壓就能達(dá)到3.7V或者3.2V.相對(duì)等于2-4個(gè)鎳氫電池或鎳隔電池的串聯(lián)電壓。如果客戶要求使用電池的電壓過關(guān)，那么選用鋰離子電池材料也容易方便組成鋰離子電池材料組，方便快捷把鋰離子電池材料電壓提升。鋰離子電池材料的能量和密度針對(duì)其它電池也很高。鋰離子電池材料具有高儲(chǔ)能量密度，目前常用的鋰離子電池材料密度可達(dá)到450-620Wh/kg，是鉛酸蓄電池的5-7倍。如果人們選用蓄電池還會(huì)考慮到一個(gè)非常重要的問題，那就是污染。針對(duì)電池重量來對(duì)比。一只鋰離子電池材料的重量約為鉛酸蓄電池的5-6倍。雖然鋰離子電池材料的重量和聚合物鋰離子電池材料的重量差不了多少。但是看容量與壽命，人們都是會(huì)選擇鋰離子電池材料的。根據(jù)目前使用的粘結(jié)劑種類來看,現(xiàn)在用的非常多的粘結(jié)劑是:正極:PVDF和PTFE;負(fù)極:PVDF和SBR。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="ARKEMA隔膜涂層PVDF產(chǎn)品規(guī)格,二次儲(chǔ)能新能源材料" src="https://tyunfile.71360.com/UploadFile/scmchem/637361320883222656/3222621.png"></div><p style="text-indent:25px">目前電池制造要求在不增加烘箱數(shù)量的前提下有較高的涂布速度以提高生產(chǎn)效率。因此,為了減少蒸發(fā)的熱量需求,粘結(jié)劑需配制成高濃度溶液。在極片干燥以后,會(huì)經(jīng)過熱壓工藝,以增加其壓實(shí)密度,如果粘結(jié)劑結(jié)構(gòu)是完全彈性的,輥壓后的極片會(huì)發(fā)生反彈。毋庸置疑,要求極片在輥壓后保持形狀不反彈。 PVDF粘結(jié)劑具有較強(qiáng)的耐化學(xué)性和機(jī)械性能,一個(gè)突出特點(diǎn)是非規(guī)則鍵所占比例較低,使得聚合物結(jié)晶度較高。這些優(yōu)異特質(zhì)使得鋰離子電池PVDF粘結(jié)劑在有機(jī)電解液中保持長(zhǎng)時(shí)間穩(wěn)定且低溶脹。介電性能是PVDF的另一個(gè)重要特征,因?yàn)檫@些無定形區(qū)的偶極矩易于和電場(chǎng)方向保持一致,PVDF在聚合物中介電常數(shù)是zui高的。熱失控現(xiàn)象及其強(qiáng)度與鋰離子電池材料的大小、配置和電池單元的數(shù)量有關(guān)。ARKEMA隔膜涂層PVDF產(chǎn)品規(guī)格</p><p style="text-indent:25px">SCM鋰離子電池材料供應(yīng)商IMERYS（益瑞石）產(chǎn)品有正極導(dǎo)電劑，典型型號(hào)為升級(jí)版導(dǎo)電碳黑SUPER C45/SUPER C65。ARKEMA隔膜涂層PVDF產(chǎn)品規(guī)格</p><p style="text-indent:25px">鋰離子電池材料電動(dòng)車的鋰離子電池材料比普通電池更安全，鋰離子電池材料于其他普通電池有質(zhì)的差別，當(dāng)出現(xiàn)重壓，撞擊，短路等情況時(shí)不會(huì)發(fā)生。鋰離子電池材料相對(duì)于普通電池更加綠色，對(duì)環(huán)境污染很少，因?yàn)槭褂脡勖L(zhǎng)可以避免普通電池更換帶來的對(duì)環(huán)境的污染。鋰離子電池材料電動(dòng)車因?yàn)殡姵伢w積小、重量低、所以一般輕巧美觀、移動(dòng)方便、很多的鋰離子電池材料電動(dòng)車還可以進(jìn)行折疊。消費(fèi)者在給普通的鉛酸蓄電池電動(dòng)車充電時(shí)，一直都擔(dān)心電池發(fā)生記憶效應(yīng)，等用了鋰離子電池材料，大家都可以松下一口氣，鋰離子電池材料不帶記憶效應(yīng)。注意事項(xiàng)：在使用鋰離子電池材料電動(dòng)車中應(yīng)注意的是，電池放置一段時(shí)間后則進(jìn)入休眠狀態(tài)，此時(shí)容量低于正常值，使用時(shí)間亦隨之縮短。因此，要學(xué)會(huì)保養(yǎng)鋰離子電池材料電動(dòng)車。ARKEMA隔膜涂層PVDF產(chǎn)品規(guī)格</p><p style="text-indent:25px">上海匯平化工有限公司是一家 SCM主營(yíng)業(yè)務(wù)：特種材料、特殊化學(xué)品及設(shè)備的銷售、技術(shù)服務(wù)及行業(yè)推廣產(chǎn)品涵蓋：電池電容器材料、特種工程聚合物、熱塑性彈性體、氟硅橡膠、醫(yī)療聚合物、聚氨酯、聚合物添加劑；特種工業(yè)潤(rùn)滑劑、清洗劑、密封與膠黏材料、工業(yè)MRO產(chǎn)品、合成導(dǎo)熱油；食品添加劑、農(nóng)藥醫(yī)藥助劑、特種催化劑、含有機(jī)氟、硅、鈦及特種精細(xì)化學(xué)品、特種陶瓷、活性炭、二硫化鉬、石墨炭黑、納米二氧化硅、納米二氧化鈦等無機(jī)化學(xué)品；天然氣及其他可燃?xì)怏w加臭劑、選礦藥劑；環(huán)保過濾設(shè)備、石油石化天然氣特種設(shè)備及配件；特種工程塑料、橡膠半的公司，是一家集研發(fā)、設(shè)計(jì)、生產(chǎn)和銷售為一體的專業(yè)化公司。公司自創(chuàng)立以來，投身于消泡劑，抗氧化劑，peek，硅油，是化工的主力軍。SCM始終以本分踏實(shí)的精神和必勝的信念，影響并帶動(dòng)團(tuán)隊(duì)取得成功。SCM始終關(guān)注自身，在風(fēng)云變化的時(shí)代，對(duì)自身的建設(shè)毫不懈怠，高度的專注與執(zhí)著使SCM在行業(yè)的從容而自信。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3113515.html</p></div></div></div></div></div><div id="c7btl24" class="page-right twoColRt"><div id="ei3tlif" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="x32ya8d" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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