DataVXACS Applied Energy MaterialsPaper
journal article·2020-06-22

Suppressing Fe–Li, Ni–Li Antisite Defects in LiFePO4 and LiNi1/3Co1/3Mn1/3O2 by Optimized Synthesis Methods

Baofeng Zhang, Youlong Xu, Jie Wang, Xiaoning Ma, Wenqiang Hou

ACS Applied Energy Materials· Volume 3· Issue 6
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Source abstract

Abstract

Antisite defects in LiFePO4 and LiNi1/3Co1/3Mn1/3O2 cathode materials will severely decrease Li+ diffusion ability and the cell capacity. However, the mechanism of constraining antisite defects during the hydrothermal route is not fully understood. Herein, the Fe–Li, Ni–Li antisite defects in LiFePO4 and LiNi1/3Co1/3Mn1/3O2 cathode materials are successfully suppressed by optimized synthesis methods. As a result, their discharge capacity and rate performance at room and low temperature are significantly enhanced owing to smaller potential difference, less charge transfer resistance, reduced polarization, and enhanced Li+ diffusion coefficient. The comprehensive investigation of synthesis parameters indicates that high attraction and less repulsion force governed by the zeta potential is crucial for making ideal cathode materials by facilitating coalescence, providing the sufficient cations occupation needed, and constructing uniform layer-by-layer surroundings for the precursors.
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Research context

Energy storage

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Extraction and Separation Processes

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710021, China

Shaanxi Engineering Research Center of Advanced Energy Materials & Devices, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710021, China

Beijing Institute of Nano Energy and Nano Systems, Chinese Academy of Sciences; National Center for Nano Science and Technology (NCNST), Beijing, 100083, China

Funding

State Administration of Foreign Experts Affairs · Ministry of Education of the People's Republic of China · National Natural Science Foundation of China · Key Research and Development Plan of Shaanxi Province

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