Ni3N Nanocrystals Decorated Reduced Graphene Oxide with High Ionic Conductivity for Stable Lithium Metal Anode

Zhao, Lingfei1; Wang, Wenhui1,2; Zhao, Xixia1; Hou, Zhen1; Fan, Xiaokun1; Liu, Yulian1; Quan, Zewei1

2019-04

10.1021/acsaem.9b00014

ACS Applied Energy Materials   影响因子和分区

2574-0962

Lithium (Li) metal is the ultimate choice of anode material for high energy density rechargeable Li batteries, yet its practical application has been seriously hindered due to fast capacity decay, infinite volume expansion, and uncontrolled dendrite formation. Herein, we report the utilization of Ni3N nanocrystals decorated nitrogen doped reduced graphene oxide (Ni3N@N-RGO) coated Cu as a stable host for the lithium metal anode. The uniformly distributed Ni3N nanocrystals can be in situ converted into Li3N, which leads to high ionic conductivity and homogeneous Li-ion flux distribution of the 3D N-RGO matrix. As a result, the Ni3N@N-RGO/Cu electrode presents a stable Li plating/strapping for 1400 h at 1 mA cm(-2) with a small overpotential of similar to 30 mV. The improved electrochemical stability is demonstrated as the smooth and dense surfaces of the plated metallic Li on Ni3N@N-RGO/Cu electrode over 300 cycles. The Lill LiFePO4 full cells with Li/Ni3N@N-RGO/Cu anode present improved rate and cycling performances. These results indicate that improving the ionic conductivity of 3D graphene based hosts with uniformly distributed Ni3N nanocrystals is a feasible approach for a stable Li metal anode.

lithium metal anode batteries Ni3N nanocrystals Li3N ionic conductivity host

ESCI ; SCI ; EI

英语

第一 ; 通讯

Shenzhen Graduate School, Peking University[] ; Center for Environmental Sciences and Engineering[] ; Harbin Institute of Technology[518055] ; Shenzhen Science and Technology Innovation Commission[] ; Development and Reform Commission of Shenzhen Municipality[] ; National Natural Science Foundation of China[51772142] ; National Natural Science Foundation of China[]

Materials Science

Materials Science, Multidisciplinary

WOS:000465644600043

AMER CHEMICAL SOC

20200708177866

Anodes ; Doping (additives) ; Electrochemical electrodes ; Graphene ; Ionic conductivity ; Lithium compounds ; Lithium-ion batteries ; Metals ; Nanocrystals ; Solar cells

Solar Cells:702.3 ; Electron Tubes:714.1 ; Nanotechnology:761 ; Chemical Products Generally:804

Web of Science

1.Southern Univ Sci & Technol SUSTech, Dept Chem, Shenzhen 518055, Guangdong, Peoples R China;
2.Harbin Inst Technol Shenzhen, Shenzhen Key Lab Organ Pollut Prevent & Control, Environm Sci & Engn Res Ctr, Shenzhen 518055, Peoples R China

Zhao, Lingfei,Wang, Wenhui,Zhao, Xixia,et al. Ni3N Nanocrystals Decorated Reduced Graphene Oxide with High Ionic Conductivity for Stable Lithium Metal Anode[J]. ACS Applied Energy Materials,2019,2(4):2692-2698.

Zhao, Lingfei.,Wang, Wenhui.,Zhao, Xixia.,Hou, Zhen.,Fan, Xiaokun.,...&Quan, Zewei.(2019).Ni3N Nanocrystals Decorated Reduced Graphene Oxide with High Ionic Conductivity for Stable Lithium Metal Anode.ACS Applied Energy Materials,2(4),2692-2698.

Zhao, Lingfei,et al."Ni3N Nanocrystals Decorated Reduced Graphene Oxide with High Ionic Conductivity for Stable Lithium Metal Anode".ACS Applied Energy Materials 2.4(2019):2692-2698.