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Featured researches published by Yi-Jie Gu.


Functional Materials Letters | 2017

Mixed Mn3+/Mn4+ in high-voltage nano-structured lithium nickel manganese oxide cathode with a P4332 structure

Yu Li; Yi-Jie Gu; Yunbo Chen; Hong-Quan Liu; Yong-Qin Han; Hai-Feng Wang; Heng-Hui Zhou

In this paper, we have synthesized LiNi0.5Mn1.5O4 with P4332 space group by carbonate co-precipitation. TG/DSC, TG*, ICP-OES, a gas displacement pycnometer using He gas, XPS, and XRD refinement results show that oxygen vacancies exist in the LiNi0.5Mn1.5O4−δ with a P4332 space group. There is a mixture of Mn3+ and Mn4+ in the P4332 structured LiNi0.5Mn1.5O4−δ. Despite the large amount of Mn3+ in the spinel structure, no 4.0V plateau appears in charge–discharge curves. This result indicates that the Mn3+ in LiNi0.5Mn1.5O4−δ does not participate in electrochemical reactions during the charge–discharge process.


Materials Letters | 2007

Enhanced cycling performance and high energy density of LiFePO4 based lithium ion batteries

Yi-Jie Gu; Zeng Cs; 吴惠康; 黄小文; Hongzhi Cui; 刘秀波; Wang Cl; Yang Zn; Hong Quan Liu


Materials Letters | 2006

Plasma jet clad γ/Cr7C3 composite coating on steel

Xiu-Bo Liu; Yi-Jie Gu


Electrochimica Acta | 2016

Comparison of Li/Ni antisite defects in Fd-3 m and P4332 nanostructured LiNi0.5Mn1.5O4 electrode for Li-ion batteries

Yi-Jie Gu; Yu Li; Yunbo Chen; Hong-Quan Liu


International Journal of Hydrogen Energy | 2018

Effect of lithium phosphate on the structural and electrochemical performance of nanocrystalline LiFePO 4 cathode material with iron defects

Yan-Jie Wu; Yi-Jie Gu; Yunbo Chen; Hong-Quan Liu; Cheng-Quan Liu


Solid State Ionics | 2018

Changes in Mn3+/Mn4+ ratio, resistance values in electrochemical impedance spectra, and rate capability with increased lithium content in spinel LixMn2O4

Yang Fu; Yi-Jie Gu; Yunbo Chen; Hong-Quan Liu; Heng-Hui Zhou


Materials Letters | 2016

Phase transformation during synthesis of LiNi0.5Mn1.5O4 by oxalate co-precipitation

Yu Li; Yi-Jie Gu; Yunbo Chen; Hong-Quan Liu; Jianxu Ding; Yan-Ming Wang


Solid State Ionics | 2018

Effect of carbon coating on the crystal orientation and electrochemical performance of nanocrystalline LiFePO4

Juan Wang; Yi-Jie Gu; Wen-Li Kong; Hong-Quan Liu; Yunbo Chen; Wen Liu


Journal of Energy Chemistry | 2018

Effect of rich R-TiO2 on the rate and cycle properties of Li4Ti5O12 as anode for lithium ion batteries

Delai Qian; Yi-Jie Gu; Shuainan Guo; Hong-Quan Liu; Yunbo Chen; Juan Wang; Guoxuan Ma; Chuan Wu


Journal of New Materials For Electrochemical Systems | 2016

Novel Synthesis of Plate-like LiFePO4 by Hydrothermal Method

Yi-Jie Gu; Chang-Jiao Li; Long Cheng; Peng-Gong Lv; Fu-Jie Fu; Hong-Quan Liu; Jianxu Ding; Yan-Ming Wang; Yunbo Chen; Hai-Feng Wang; Shun-Wei Fan

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Hong-Quan Liu

Shandong University of Science and Technology

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Yunbo Chen

Shandong University of Science and Technology

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Yu Li

Shandong University of Science and Technology

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Jianxu Ding

Shandong University of Science and Technology

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Juan Wang

Shandong University of Science and Technology

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Yan-Ming Wang

Shandong University of Science and Technology

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Chang-Jiao Li

Shandong University of Science and Technology

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Chuan Wu

Beijing Institute of Technology

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Delai Qian

Shandong University of Science and Technology

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