Premium
Langmuir–Blodgett Nanowire Devices for In Situ Probing of Zinc‐Ion Batteries
Author(s) -
Liu Qin,
Hao Zhimeng,
Liao Xiaobin,
Pan Xuelei,
Li Shuxuan,
Xu Lin,
Mai Liqiang
Publication year - 2019
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201902141
Subject(s) - materials science , nanowire , raman spectroscopy , nanotechnology , ohmic contact , electrode , pyrolytic carbon , optoelectronics , chemical engineering , layer (electronics) , chemistry , physics , engineering , pyrolysis , optics
In situ monitoring the evolution of electrode materials in micro/nano scale is crucial to understand the intrinsic mechanism of rechargeable batteries. Here a novel on‐chip Langmuir–Blodgett nanowire (LBNW) microdevice is designed based on aligned and assembled MnO 2 nanowire quasimonolayer films for directly probing Zn‐ion batteries (ZIBs) in real‐time. With an interdigital device configuration, a splendid Ohmic contact between MnO 2 LBNWs and pyrolytic carbon current collector is demonstrated here, enabling a small polarization voltage. In addition, this work reveals, for the first time, that the conductance of MnO 2 LBNWs monotonically increases/decreases when the ZIBs are charged/discharged. Multistep phase transition is mainly responsible for the mechanism of the ZIBs, as evidenced by combined high‐resolution transmission electron microscopy and in situ Raman spectroscopy. This work provides a new and adaptable platform for microchip‐based in situ simultaneous electrochemical and physical detection of batteries, which would promote the fundamental and practical research of nanowire electrode materials in energy storage applications.