Efficient Reversible Conversion between MoS2 and Mo/Na2S Enabled by Graphene-Supported Single Atom Catalysts

doi:10.1002/adma.202007090

IMR OpenIR

	Efficient Reversible Conversion between MoS2 and Mo/Na2S Enabled by Graphene-Supported Single Atom Catalysts
	Chen, Biao 1,2; Wang, Tianshuai 3; Zhao, Shiyong 4,5; Tan, Junyang 1,2; Zhao, Naiqin 6,7; Jiang, San Ping 4,5; Zhang, Qianfan 3; Zhou, Guangmin 1,2; Cheng, Hui-Ming 1,2,8
通讯作者	Jiang, San Ping(s.jiang@curtin.edu.au) ; Zhang, Qianfan(qianfan@buaa.edu.cn) ; Zhou, Guangmin(guangminzhou@sz.tsinghua.edu.cn) ; Cheng, Hui-Ming(hmcheng@sz.tsinghua.edu.cn)
	2021-02-18
发表期刊	ADVANCED MATERIALS
ISSN	0935-9648
页码	12
摘要	Sodium-ion batteries (SIBs) based on conversion-type metal sulfide (MS) anodes have attracted extraordinary attention due to relatively high capacity and intrinsic safety. The highly reversible conversion of M/Na2S to pristine MS in charge plays a vital role with regard to the electrochemical performance. Here, taking conventional MoS2 as an example, guided by theoretical simulations, a catalyst of iron single atoms on nitrogen-doped graphene (SAFe@NG) is selected and first used as a substrate to facilitate the reaction kinetics of MoS2 in the discharging process. In the following charging process, using a combination of spectroscopy and microscopy, it is demonstrated that the SAFe@NG catalyst enables an efficient reversible conversion reaction of Mo/Na2S -> NaMoS2 -> MoS2. Moreover, theoretical simulations reveal that the reversible conversion mechanism shows favorable formation energy barrier and reaction kinetics, in which SAFe@NG with the Fe-N-4 coordination center facilitates the uniform dispersion of Na2S/Mo and the decomposition of Na2S and NaMoS2. Therefore, efficient reversible conversion reaction MoS2 <-> NaMoS2 <-> Mo/Na2S is enabled by the SAFe@NG catalyst. This work contributes new avenues for designing conversion-type materials with an efficient reversible mechanism.
关键词	Mo/Na2S MoS2 reversible conversion single-atom catalysts sodium-ion batteries transition metal sulfides
资助者	China Postdoctoral Science Foundation ; Guangdong Basic and Applied Basic Research Foundation ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; Shenzhen Geim Graphene Center
DOI	10.1002/adma.202007090
收录类别	SCI
语种	英语
资助项目	China Postdoctoral Science Foundation[2020TQ0159] ; China Postdoctoral Science Foundation[2020M680544] ; Guangdong Basic and Applied Basic Research Foundation[2020A1515110745] ; National Key Research and Development Program of China[2019YFA0705700] ; National Key Research and Development Program of China[2017YFB0702100] ; National Natural Science Foundation of China[52072205] ; National Natural Science Foundation of China[11404017] ; National Natural Science Foundation of China[51972225] ; Shenzhen Geim Graphene Center
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000619023300001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：131[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/160827
专题	中国科学院金属研究所
通讯作者	Jiang, San Ping; Zhang, Qianfan; Zhou, Guangmin; Cheng, Hui-Ming
作者单位	1.Tsinghua Univ, Shenzhen Geim Graphene Ctr, Tsinghua Berkeley Shenzhen Inst, Shenzhen 518055, Peoples R China 2.Tsinghua Univ, Tsinghua Shenzhen Int Grad Sch, Shenzhen 518055, Peoples R China 3.Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China 4.Curtin Univ, Fuels & Energy Technol Inst, Perth, WA 6102, Australia 5.Curtin Univ, WA Sch Mines Minerals Energy & Chem Engn, Perth, WA 6102, Australia 6.Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China 7.Tianjin Univ, Tianjin Key Lab Composite & Funct Mat, Tianjin 300350, Peoples R China 8.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Chen, Biao,Wang, Tianshuai,Zhao, Shiyong,et al. Efficient Reversible Conversion between MoS2 and Mo/Na2S Enabled by Graphene-Supported Single Atom Catalysts[J]. ADVANCED MATERIALS,2021:12.
APA	Chen, Biao.,Wang, Tianshuai.,Zhao, Shiyong.,Tan, Junyang.,Zhao, Naiqin.,...&Cheng, Hui-Ming.(2021).Efficient Reversible Conversion between MoS2 and Mo/Na2S Enabled by Graphene-Supported Single Atom Catalysts.ADVANCED MATERIALS,12.
MLA	Chen, Biao,et al."Efficient Reversible Conversion between MoS2 and Mo/Na2S Enabled by Graphene-Supported Single Atom Catalysts".ADVANCED MATERIALS (2021):12.