Lithiophilicity conversion of carbon paper with uniform Cu2+1O coating : Boosting stable Li-Cu2+1O-CP composite anode through melting infusion

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

View graph of relations

Detail(s)

Original languageEnglish
Article number124238
Journal / PublicationChemical Engineering Journal
Volume388
Online published28 Jan 2020
Publication statusPublished - 15 May 2020

Abstract

The carbon-based materials are promising hosts for metallic Li owing to their merits of excellent chemical stability, high porosity and electrical conductivity, as well as lightweight. Nevertheless, homogeneously pre-depositing Li into the carbon hosts remains a challenge owing to the inherited lithiophobic surface of carbon materials. In this contribution, we found that the Cu2+1O was lithiophilic and the origin of the lithiophilicity of Cu2+1O was investigated. Furthermore, a facile approach was presented to uniformly coat a thin Cu2+1O layer onto commercial carbon papers (CPs) to modify the surfaces of CPs into lithiophilic and after molten Li infusion, the Li-Cu2+1O-CP composite anode was fabricated. The CP could accommodate the huge volume change of Li and suppress the Li dendrite growth during cycling. As a result, the Li-Cu2+1O-CP composite anode delivered a stable repeating Li plating and stripping behavior (500 cycles at 10 mA cm−2 with 3 mAh cm−2Li) based on symmetric cell, as well as enhanced rate capability and cycling stability (97% capacity retention after 500 cycles) in full cells integrated with a commercial LiFePO4 cathode.

Research Area(s)

  • Lithium battery, Lithium metal anode, Lithium wettability

Citation Format(s)