Metal-organic frameworks derived germanium oxide nanosheets for large reversible Li-ion storage
Metal-organic frameworks derived germanium oxide nanosheets for large reversible Li-ion storage
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金属有机框架衍生的氧化锗纳米片用于大型可逆锂离子存储
DOI:
10.1016/j.elecom.2017.09.019
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发表时间:
2017-11
影响因子:
5.4
通讯作者:
Wang Yong
中科院分区:
文献类型:
--
作者:
Zhang Wenbo;Pang Huicong;Sun Weiwei;Lv Li-Ping;Wang Yong
A Ge-based metal-organic framework (MOF) precursor [C6H10(NH2)2Ge3O6] is used to fabricate two-dimensional GeO2nanosheets in this work. The obtained micrometer-sized GeO2nanosheet delivers superior lithium-storage capability during long cycling (an initial reversible capacity of 1315 mAh g− 1at 100 mA g− 1and the retained capacity of 1393 mAh g− 1after 350 cycles). The observed large capacity and good cyclability have been mainly attributed to its nanosheet structure inherited from the MOF precursor, which can facilitate the electrolyte infusion and the lithium diffusion, maintain the structural stability, and alleviate the large volume change of the electrode during repetitive lithiation/delithiation process.
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