Caging tin oxide in three-dimensional graphene networks for superior volumetric lithium storage.
Caging tin oxide in three-dimensional graphene networks for superior volumetric lithium storage.
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三维石墨烯网络中的锡锡氧化物,用于上容量锂的储存。
DOI:
10.1038/s41467-017-02808-2
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发表时间:
2018-01-26
影响因子:
16.6
通讯作者:
Yang QH
中科院分区:
文献类型:
--
作者:
Han J;Kong D;Lv W;Tang DM;Han D;Zhang C;Liu D;Xiao Z;Zhang X;Xiao J;He X;Hsia FC;Zhang C;Tao Y;Golberg D;Kang F;Zhi L;Yang QH
Tin and its compounds hold promise for the development of high-capacity anode materials that could replace graphitic carbon used in current lithium-ion batteries. However, the introduced porosity in current electrode designs to buffer the volume changes of active materials during cycling does not afford high volumetric performance. Here, we show a strategy leveraging a sulfur sacrificial agent for controlled utility of void space in a tin oxide/graphene composite anode. In a typical synthesis using the capillary drying of graphene hydrogels, sulfur is employed with hard tin oxide nanoparticles inside the contraction hydrogels. The resultant graphene-caged tin oxide delivers an ultrahigh volumetric capacity of 2123 mAh cm–3 together with good cycling stability. Our results suggest not only a conversion-type composite anode that allows for good electrochemical characteristics, but also a general synthetic means to engineering the packing density of graphene nanosheets for high energy storage capabilities in small volumes. The excessive porous space in carbon anodes for lithium-ion batteries has to be utilized for high volumetric performance. Here the authors show an adaptable sulfur template strategy to yield graphene-caged noncarbon materials with a precisely controlled amount of void, enabling ultrahigh volumetric lithium storage.
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影响因子:
16.6
作者:
Tan G;Wu F;Yuan Y;Chen R;Zhao T;Yao Y;Qian J;Liu J;Ye Y;Shahbazian-Yassar R;Lu J;Amine K
通讯作者:
Amine K
影响因子:
16.6
作者:
通讯作者:
--
影响因子:
41.2
作者:
Magasinski, A.;Dixon, P.;Yushin, G.
通讯作者:
Yushin, G.
影响因子:
16.6
作者:
Hassan FM;Batmaz R;Li J;Wang X;Xiao X;Yu A;Chen Z
通讯作者:
Chen Z
影响因子:
15
作者:
Chockla, Aaron M.;Harris, Justin T.;Korgel, Brian A.
通讯作者:
Korgel, Brian A.