題目:Layered Phosphorus-Like GeP5: a Promising Anode Candidate with High Initial Coulombic Efficiency and Large Capacity for Lithium Ion Batteries
作者:Wenwu Li,a Huiqiao Li,*a Zhijuan Lu,a Lin Gan,a Linbo Ke,a Tianyou Zhai*a and Haoshen Zhoub
a State Key Lab of Material Processing and Die & Mould Technology, School of Materials Science and Engineering,
Huazhong University of Science and Technology (HUST), Wuhan 430074, Hubei, P.R. China
(PS:為何一個(gè)“材料加工、鋼模、澆注技術(shù)省重點(diǎn)實(shí)驗(yàn)室”在做什么鋰電池呢?這就是所謂的掛羊頭賣(mài)狗肉么)
b Energy Technology Research Institute, Nantional Institute of Advanced Industrial Science and Technology (AIST),
Umezono 1-1-1, Tsukuba 305-8568, Japan
(PS:貌似這家伙很喜歡招免費(fèi)勞動(dòng)力,來(lái)者不拒型的)
摘要:In this work, we for the first time investigate GeP5 as an anode material for lithium ion batteries (LIB). By a facile high energy mechanical ball milling (HEMM) method, we successfully synthesize pure GeP5 and GeP5/C nanocomposite at ambient temperature and pressure. According to XRD Rietveld refinement and first principle calculation, GeP5 holds an open two-dimensional layered structure similar to black P and graphite, a high conductivity as 10000 and 10 times of black P and graphite, respectively. Serving as novel anode materials, both GeP5 and its carbon composite deliver an unprecedented high reversible capacity of ca. 2300 mA h g-1, combined with a high initial coulombic efficiency of ca. 95%. Ex-situ XRD and CV tests demonstrate GeP5 undergoes conversion and alloying type lithium storage mechanism that its capacity is co-contributed by both Ge and P components. In addition, GeP5/C exhibits superior cycle stability and excellent high-rate performance with a capacity of 2127 mA h g-1 at 5 A g-1, suggesting their promising application in next-generation high-energy and high-power LIB.![大牛Haoshen Zhou和Tianyou Zhai最新鋰電力作(EES,2015年10月03日)]()
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