Jeong, M.-G. Kwak, W.-J. Kim, J.Y. Lee, J.K. Sun, Y.-K. Jung, H.-G. 2024-01-19T13:01:08Z 2024-01-19T13:01:08Z 2021-10-21 2022-01-01 1385-8947 https://pubs.kist.re.kr/handle/201004/115817 This paper reports use of a 3D porous Cu scaffold as a conductive host in the 3D host-lithium composite anode (HLC) in Li-O2 batteries to decrease local current density and induce uniform Li deposition, and thereby suppress formation of Li dendrites that reduce rate capability and reversibility of the batteries. Furthermore, the influences of HLC and uniform Li-ion flux on Li2O2 formation at the porous cathode were investigated by quantification of Li2O2. The amount of Li2O2 on cathodes changed according to the state of the facing Li anodes; this trend means that the influence of uniform Li-ion flux from the Li metal anode is critical to ensure uniform Li2O2 formation at the cathode. The results confirmed that the HLC ensures uniform formation and decomposition of Li2O2 at the cathode. ？ 2021 English Elsevier B.V. Anodes Cathodes Electric current collectors Lithium Lithium-ion batteries Scaffolds 3d current collector Cathode Composite anodes High rate capability Ion fluxes Li$++$ Li-ion distribution Lithium/oxygen batteries Porous Cu Reversibility Ions Uniformly distributed reaction by 3D host-lithium composite anode for high rate capability and reversibility of Li-O2 batteries Article 10.1016/j.cej.2021.130914 1 Chemical Engineering Journal, v.427 Chemical Engineering Journal 427 scie scopus 000724702100003 2-s2.0-85111037649 Engineering, Environmental Engineering, Chemical Engineering Article Anodes Cathodes Electric current collectors Lithium Lithium-ion batteries Scaffolds 3d current collector Cathode Composite anodes High rate capability Ion fluxes Li$++$ Li-ion distribution Lithium/oxygen batteries Porous Cu Reversibility Ions 3D current collector Cathode Li-ion distribution Li2O2 Lithium oxygen battery Reversibility