Hydrogen-bond reinforced superstructural manganese oxide as the cathode for ultra-stable aqueous zinc ion batteries

DOI: 10.1002/aenm.202201840

Authors: Jianwei Li (State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences (CAS); Queen Mary University of London) , Ningjing Luo (State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences (CAS)) , Liqun Kang (University College London) , Fangjia Zhao (University College London) , Yiding Jiao (University College London) , Thomas J. Macdonald (Queen Mary University of London) , Min Wang (Qinghai Institute of Salt Lakes, Chinese Academy of Sciences (CAS)) , Ivan P. Parkin (University College London) , Paul R. Shearing (University College London) , Dan J. L. Brett (University College London) , Guoliang Chai (State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences (CAS)) , Guanjie He (Queen Mary University of London; University College London (UCL))
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Advanced Energy Materials , VOL 12

State: Published (Approved)
Published: November 2022
Diamond Proposal Number(s): 22553 , 22604 , 30614

Abstract: Layered manganese oxides adopting pre-accommodated cations have drawn tremendous interest for the application as cathodes in aqueous zinc-ion batteries (AZIBs) owing to their open 2D channels for fast ion-diffusion and mild phase transition upon topochemical (de)intercalation processes. However, it is inevitable to see these “pillar” cations leaching from the hosts owing to the loose interaction with negatively charged Helmholtz planes within the hosts and shearing/bulking effects in 2D structures upon guest species (de)intercalation, which implies a limited modulation to prevent them from rapid performance decay. Herein, a new class of layered manganese oxides, Mg0.9Mn3O7·2.7H2O, is proposed for the first time, aims to achieve a robust cathode for high-performance AZIBs. The cathode can deliver a high capacity of 312 mAh g−1 at 0.2 A g−1 and exceptional cycling stability with 92% capacity retention after 5 000 cycles at 5 A g−1. The comprehensive characterizations elucidate its peculiar motif of pined Mg-□Mn-Mg dumbbell configuration along with interstratified hydrogen bond responsible for less Mn migration/dissolution and quasi-zero-strain characters. The revealed new structure-function insights can open up an avenue toward the rational design of superstructural cathodes for reversible AZIBs.

Diamond Keywords: Batteries; Zinc-ion

Subject Areas: Energy, Materials, Chemistry

Diamond Offline Facilities: Electron Physical Sciences Imaging Centre (ePSIC)
Instruments: E01-JEM ARM 200CF , E02-JEM ARM 300CF

Added On: 05/01/2023 22:14

Documents:
Advanced Energy Materials - 2022 - Li - Hydrogen%E2%80%90Bond Reinforced Superstructural Manganese Oxide As the Cathode for.pdf

Discipline Tags:

Energy Storage Energy Physical Chemistry Energy Materials Chemistry Materials Science

Technical Tags:

Microscopy Electron Microscopy (EM) Scanning Transmission Electron Microscopy (STEM)