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All-MXene-Based Integrated Electrode Constructed by Ti3C2 Nanoribbon Framework Host and Nanosheet Interlayer for High-Energy-Density Li-S Batteries
Dong, YF; Zheng, SH; Qin, JQ; Zhao, XJ; Shi, HD; Wang, XH; Chen, J; Wu, ZS; Wu, ZS (reprint author), Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Peoples R China.; Wang, XH (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
2018-03-01
发表期刊ACS NANO
ISSN1936-0851
卷号12期号:3页码:2381-2388
摘要High-energy-density lithium-sulfur (Li-S) batteries hold promise for next-generation portable electronic devices, but are facing great challenges in rational construction of high-performance flexible electrodes and innovative cell configurations for actual applications. Here we demonstrated an all-MXene-based flexible and integrated sulfur cathode, enabled by three-dimensional alkalized Ti3C2 MXene nanoribbon (a-Ti3C2 MNR) frameworks as a S/polysulfides host (a-Ti3C2-S) and two-dimensional delaminated Ti3C2 MXene (d-Ti3C2) nano-sheets as interlayer on a polypropylene (PP) separator, for high-energy and long-cycle Li-S batteries. Notably, an a-Ti3C2 MNR framework with open interconnected macropores and an exposed surface area guarantees high S loading and fast ionic diffusion for prompt lithiation/delithiation kinetics, and the 2D d-Ti3C2 MXene interlayer remarkably prevents the shuttle effect of lithium polysulfides via both chemical absorption and physical blocking. As a result, the integrated a-Ti3C2-S/d-Ti3C2/PP electrode was directly used for Li-S batteries, without the requirement of a metal current collector, and exhibited a high reversible capacity of 1062 mAh g(-1) at 0.2 C and enhanced capacity of 632 mAh g(-1) after 50 cycles at 0.5 C, outperforming the a-Ti3C2-S/PP electrode (547 mAh g(-1)) and conventional a-Ti3C2-S on an Al current collector (a-Ti3C2-S/Al) (597 mAh g(-1)). Furthermore, the all-MXene-based integrated cathode displayed outstanding rate capacity of 288 mAh g(-1) at 10 C and long-life cyclability. Therefore, this proposed strategy of constructing an all-MXene-based cathode can be readily extended to assemble a large number of MXene-derived materials, from a group of 60+ MAX phases, for applications such as various batteries and supercapacitors.; High-energy-density lithium-sulfur (Li-S) batteries hold promise for next-generation portable electronic devices, but are facing great challenges in rational construction of high-performance flexible electrodes and innovative cell configurations for actual applications. Here we demonstrated an all-MXene-based flexible and integrated sulfur cathode, enabled by three-dimensional alkalized Ti3C2 MXene nanoribbon (a-Ti3C2 MNR) frameworks as a S/polysulfides host (a-Ti3C2-S) and two-dimensional delaminated Ti3C2 MXene (d-Ti3C2) nano-sheets as interlayer on a polypropylene (PP) separator, for high-energy and long-cycle Li-S batteries. Notably, an a-Ti3C2 MNR framework with open interconnected macropores and an exposed surface area guarantees high S loading and fast ionic diffusion for prompt lithiation/delithiation kinetics, and the 2D d-Ti3C2 MXene interlayer remarkably prevents the shuttle effect of lithium polysulfides via both chemical absorption and physical blocking. As a result, the integrated a-Ti3C2-S/d-Ti3C2/PP electrode was directly used for Li-S batteries, without the requirement of a metal current collector, and exhibited a high reversible capacity of 1062 mAh g(-1) at 0.2 C and enhanced capacity of 632 mAh g(-1) after 50 cycles at 0.5 C, outperforming the a-Ti3C2-S/PP electrode (547 mAh g(-1)) and conventional a-Ti3C2-S on an Al current collector (a-Ti3C2-S/Al) (597 mAh g(-1)). Furthermore, the all-MXene-based integrated cathode displayed outstanding rate capacity of 288 mAh g(-1) at 10 C and long-life cyclability. Therefore, this proposed strategy of constructing an all-MXene-based cathode can be readily extended to assemble a large number of MXene-derived materials, from a group of 60+ MAX phases, for applications such as various batteries and supercapacitors.
部门归属[dong, yanfeng ; zheng, shuanghao ; qin, jieqiong ; zhao, xuejun ; shi, haodong ; chen, jian ; wu, zhong-shuai] chinese acad sci, dalian inst chem phys, dalian natl lab clean energy, 457 zhongshan rd, dalian 116023, peoples r china ; [wang, xiaohui] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, liaoning, peoples r china ; [zheng, shuanghao ; qin, jieqiong ; shi, haodong] univ chinese acad sci, 19 a yuquan rd, beijing 100049, peoples r china
关键词Lithium-sulfur Batteries Nitrogen-doped Graphene Long-life Polysulfide Mediator Performance Cathodes Progress Oxide Separator Ultrafast
学科领域Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
资助者National Key R@D Program of China [2016YFA0200200, 2016YFB0100100]; National Natural Science Foundation of China [51572259]; Natural Science Foundation of Liaoning Province [201602737]; Recruitment Program of Global Expert (1000 Talent Plan); DICP [DICP ZZBS201708]; DICPQIBEBT [DICPQIBEBT UN201702]; Dalian National Laboratory For Clean Energy (DNL); CAS; China Postdoctoral Science Foundation [2016M601349, 2017T100188]; Exploratory Research Program of Shaanxi Yanchang Petroleum (Group) Co., LTD; DICP; DICP Outstanding Postdoctoral Foundation [2016YB06]; dedicated funds for methanol conversion from DICP
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/79444
专题中国科学院金属研究所
通讯作者Wu, ZS (reprint author), Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Peoples R China.; Wang, XH (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
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Dong, YF,Zheng, SH,Qin, JQ,et al. All-MXene-Based Integrated Electrode Constructed by Ti3C2 Nanoribbon Framework Host and Nanosheet Interlayer for High-Energy-Density Li-S Batteries[J]. ACS NANO,2018,12(3):2381-2388.
APA Dong, YF.,Zheng, SH.,Qin, JQ.,Zhao, XJ.,Shi, HD.,...&Wang, XH .(2018).All-MXene-Based Integrated Electrode Constructed by Ti3C2 Nanoribbon Framework Host and Nanosheet Interlayer for High-Energy-Density Li-S Batteries.ACS NANO,12(3),2381-2388.
MLA Dong, YF,et al."All-MXene-Based Integrated Electrode Constructed by Ti3C2 Nanoribbon Framework Host and Nanosheet Interlayer for High-Energy-Density Li-S Batteries".ACS NANO 12.3(2018):2381-2388.
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