首页|Unveiling the tailorable electrochemical properties of zeolitic imidazolate framework-derived Ni-doped LiCoO2 for lithium-ion batteries in half/full cells

Unveiling the tailorable electrochemical properties of zeolitic imidazolate framework-derived Ni-doped LiCoO2 for lithium-ion batteries in half/full cells

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As a prevailing cathode material of lithium-ion batteries(LIBs),LiCoO2(LCO)still encounters the tricky problems of structural collapse,whose morphological engineering and cation doping are crucial for sur-mounting the mechanical strains and alleviating phase degradation upon cycling.Hereinafter,we pro-pose a strategy using a zeolitic imidazolate framework(ZIF)as the self-sacrificing template to directionally prepare a series of LiNi0.1Co0.9O2(LNCO)with tailorable electrochemical properties.The rational selection of sintering temperature imparts the superiority of the resultant products in lithium storage,during which the sample prepared at 700 ℃(LNCO-700)outperforms its counterparts in cycla-bility(156.8 mA h g-1 at 1 C for 200 cycles in half cells,1 C=275 mA g-1)and rate capability due to the expedited ion/electron transport and the strengthen mechanical robustness.The feasibility of proper Ni doping is also divulged by half/full cell tests and theoretical study,during which LNCO-700(167 mA h g-1 at 1 C for 100 cycles in full cells)surpasses LCO-700 in battery performance due to the mitigated phase deterioration,stabilized layered structure,ameliorated electronic conductivity,and exalted lithium stor-age activity.This work systematically unveils tailorable electrochemical behaviors of LNCO to better direct their practical application.

Lithium-ion batteriesZeolitic imidazolate frameworkLiNi0.1Co0.9O2Electrochemical properties

Jian-En Zhou、Yiqing Liu、Zhijian Peng、Quanyi Ye、Hua Zhong、Xiaoming Lin、Ronghua Zeng、Yongbo Wu、Jiaye Ye

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Guangdong Provincial International Joint Research Center for Energy Storage Materials,Key Laboratory of Theoretical Chemistry of Environment,Ministry of Education,School of Chemistry,South China Normal University,Guangzhou 510006,Guangdong China

Key Laboratory of Atomic and Subatomic Structure and Quantum Control(Ministry of Education),Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matter,School of Physics,South China Normal University,Guangzhou 510006,Guangdong,China

Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials,Guangdong-Hong Kong Joint Laboratory of Quantum Matter,South China Normal University,Guangzhou 510006,Guangdong,China

School of Chemistry and Physics,Faculty of Science,Queensland University of Technology,Brisbane,QLD 4001,Australia

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Special Funds for the Cultivation of Guangdong College Students'Scientific and Technological InnovationGuangdong Provincial International Joint Research Center for Energy Storage Materials

pdjh2023b01452023A0505090009

2024

10.1016/j.jechem.2024.02.005

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.93(6)
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