Embedding Co3O4 nanoparticles into graphene nanoscrolls as anode for lithium ion batteries with superior capacity and outstanding cycling stability
Embedding Co3O4 nanoparticles into graphene nanoscrolls as anode for lithium ion batteries with superior capacity and outstanding cycling stability作者机构:School of chemistry & chemical engineering Shandong University of Technology Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences
出 版 物:《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))
年 卷 期:2018年第28卷第2期
页 面:212-217页
核心收录:
基 金:financially supported by the National Key R@D Program of China(Grant 2016YFB0100100 and 2016YFA0200200) National Natural Science Foundation of China(Grant 51572259,21576158,21576159) Natural Science Foundation of Liaoning Province(Grant 201602737) Recruitment Program of Global Expert(1000 Talent Plan) DICP(DICP ZZBS201708) Shandong Provincial Natural Science Foundation(No.ZR2015BM010) China Postdoctoral Science Foundation(Grant 2016M601349,2017T100188) DICP Outstanding Postdoctoral Foundation(2016YB06) Exploratory Research Program of Shaanxi Yanchang Petroleum(Group)CO.,LTD&DICP
主 题:Graphene nanoscrolls Co3O4 Anode Lithium ion batteries Energy storage
摘 要:CoOis a promising high-performance anode for lithium ion batteries(LIBs), but suffers from unsatisfied cyclability originating duo to low electrical conductivity and large volume expansion during charge and discharge process. Herein, we successfully constructed the CoOnanoparticles embedded into graphene nanoscrolls(GNSs) as advanced anode for high-performance LIBs with large capacity and exceptional cyclability. The onedimensional(1 D) CoO/GNSs were synthesized via liquid nitrogen cold quenching of large-size graphene oxide nanosheets and sodium citrate(SC) modified CoOnanoparticles, followed by freeze drying and annealing at400 °C for 2 h in nitrogen atmosphere. Benefiting from the interconnected porous network constructed by 1 D CoO/GNSs for fast electron transfer and rapid ion diffusion, and wrinkled graphene shell for significantly alleviating the huge volume expansion of CoOduring lithiation and delithiation. The resultant CoO/GNSs exhibited ultrahigh reversible capacity of 1200 mAh gat 0.1 C, outperforming most reported ***, they showed high rate capability of 600 m Ah g-1 at 5 C, and outstanding cycling stability with a high capacity retention of 90% after 500 cycles. Therefore, this developed strategy could be extended as an universal and scalable approach for intergrating various metal oxide materials into GNSs for energy storage and conversion applications.