Highly Aligned Ultra-Thick Gel-Based Cathodes Unlocking Ultra-High Energy Density Batteries

查看全文 作　　者：Shichun [1]Yang;Chaochao [2]Zhou;Qiong [3]Wang;Binbin [3]Chen;Yan [3]Zhao;Bin [1]Guo;Zhengjie [1]Zhang;Xinlei [1]Gao;Ridwanur [3]Chowdhury;Huizhi [3]Wang;Chao [2]Lai;Nigel [3]P.Brandon;Billy [3]Wu;Xinhua [1]Liu

机构地区：[1]School of Transportation Science and Engineering,Beihang University,Beijing 100191,China;[2]School of Chemistry and Materials Science,Jiangsu Normal University,Xuzhou 221116,China;[3]Imperial College London,Sough Kensington Campus,London SW72AZ,UK

出　　处：《Energy & Environmental Materials》索引2022年第5卷第4期,共8页

基　　金：supported by the National Key Research and Development Program of China(2016YFB0100300);National Nature Science Foundation of China(no.U1864213);the EPSRC Joint UK-India Clean Energy Centre(JUICE)(EP/P003605/1);the EPSRC Multi-Scale Modelling project(EP/S003053/1);the UK Engineering and Physical Council(EPSRC)for funding under EP/S000933/1. 摘　　要：Increasing electrode thickness can substantially enhance the specific energy of lithium-ion batteries;however,ionic transport,electronic conductivity,and ink rheology are current barriers to adoption.Here,a novel approach using a mixed xanthan gum and locust bean gum binder to construct ultrathick electrodes is proposed to address above issues.After combining aqueous binder with single-walled carbon nanotubes(SWCNT),active material(LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)) and subsequent vacuum freeze-drying,highly aligned,and low-tortuosity structures with a porosity of ca.50%can be achieved with an average pore size of 10μm,whereby the gum binder-SWCNT-NMC811 forms vertical structures supported by tissue-like binder/SWCNT networks allowing for excellent electronic conducting phase percolation.As a result,ultra-thick electrodes with a mass loading of about 511 mg cm^(−2) and 99.5 wt%active materials have been demonstrated with a remarkable areal capacity of 79.3 mAh cm^(−2),which is the highest value reported so far.This represents a>25×improvement compared with conventional electrodes with an areal capacity of about 3 mAh cm^(−2).This route also can be expanded to other electrode materials,such as LiFePO_(4) and Li_(4)Ti_(5)O_(12),and thus opens the possibility for low-cost and sustainable ultra-thick electrodes with increased specific energy for future lithium-ion batteries. 关键词：binder gel-based cathodes high areal capacity lithium-ion battery ultrathick electrodes

相关文献

参考文献（55）
引证文献（1）
耦合文献（0）

参考文献(55)

引证文献(1)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Highly Aligned Ultra-Thick Gel-Based Cathodes Unlocking Ultra-High Energy Density Batteries

参考文献(55)

引证文献(1)

用户提示