首页|Lithium-induced graphene layer containing Li3P alloy phase to achieve ultra-stable electrode interface for lithium metal anode

Lithium-induced graphene layer containing Li3P alloy phase to achieve ultra-stable electrode interface for lithium metal anode

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Uncontrolled growth of lithium dendrite will lead to low Coulombic efficiency and poor cycle stability,which hinders the commercialization of lithium metal batteries.Herein,a novel modified lithium anode with reduced graphene oxide conductive network containing trace lithiophilic phosphorus(P-rGO/Cu)is prepared by electrospraying technique combined with heat treatment process.The rGO layer has a concave and undulating conductive structure,which can significantly improve the effective electrical contact between lithium metal and the current collector,speed up the kinetics of interfacial elec-tron transport and reaction,and improve the resistance of the negative electrode to the internal stress caused by volume change of the lithium,which is advantageous for the stability of the SEI film.The extremely small and uniformly distributed red phosphorus element avoids the volume change caused by lithiation to the maximum extent.Lithiophilic two-phase compound Li3P obtained by alloying P with Li can directionally induce the homoge-neous nucleation and dense deposition of lithium metal,address the issue of lithium dendrites and extend the cycle life of the batteries.The obtained P-rGO/Cu exhibits excellent electrochemical performance with an average Coulombic efficiency(CE)of 98％at a current density of 1 mA.cm-2 for 400 cycles,and the capacity retention rate of the full cell matched with lithium iron phosphate(LFP)is 83％after 400 cycles at 1C.

Lithium anodeDendrite-freeLithiophilicityInduced nucleation deposition

Jia-Xin Chen、Guo-Qiang Zhang、Xian-Ying Qin、Kui Lin、Zi-Jin Yang、Ge-Meng Liang、Yue Xia、Guo-Bin Zhang、Hai-Kun Wu、Qiu-Chan Cai、Hai Lin、Bao-Hua Li

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Shenzhen Key Laboratory on Power Battery Safety Research and Shenzhen Geim Graphene Center,Tsinghua Shenzhen International Graduate School,Shenzhen 518055,China

Shenzhen Graphene Innovation Center Co.,Ltd.,Shenzhen 518107,China

School of Chemical Engineering and Advanced Materials,The University of Adelaide,Adelaide,SA 5005,Australia

Department of Chemistry,City University of Hong Kong,Hong Kong 990077,China

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Key-Area Research and Development Program of Guangdong Province国家自然科学基金国家自然科学基金国家自然科学基金Fundamental Research Project of ShenzhenLocal Innovative and Research Teams Project of Guangdong Pearl River Talents ProgramSupport Plan for Shenzhen Manufacturing Innovation CenterMaterials and Devices Testing Center of Tsinghua University Shenzhen International Graduate School(Tsinghua SIGS)

2020B090919003522611603845187215752072208JCYJ201908081536095612017BT01N11120200627215553988

2024

10.1007/s12598-023-02433-7

稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDEI
影响因子：0.801
ISSN：1001-0521
年,卷(期)：2024.43(2)
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