Mingzi Sun1, Qiuyang Lu1, Zhong Lin Wang2,3, Bolong Huang4. 1. Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China. 2. Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, China. zlwang@gatech.edu. 3. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USA. zlwang@gatech.edu. 4. Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China. bhuang@polyu.edu.hk.
Abstract
The charge transfer phenomenon of contact electrification even exists in the liquid-solid interface by a tiny droplet on the solid surface. In this work, we have investigated the contact electrification mechanism at the liquid-solid interface from the electronic structures at the atomic level. The electronic structures display stronger modulations by the outmost shell charge transfer via surface electrostatic charge perturbation than the inter-bonding-orbital charge transfer at the liquid-solid interface, supporting more factors being involved in charge transfer via contact electrification. Meanwhile, we introduce the electrochemical cell model to quantify the charge transfer based on the pinning factor to linearly correlate the charge transfer and the electronic structures. The pinning factor exhibits a more direct visualization of the charge transfer at the liquid-solid interface. This work supplies critical guidance for describing, quantifying, and modulating the contact electrification induced charge transfer systems in triboelectric nanogenerators in future works.
The charge transfer phenomenon of contact electrificapan class="Chemical">tion even exists in the liquid-solid interface by a tiny droplet on the solid surface. In this work, we have investigated the contact electrification mechanism at the liquid-solid interface from the electronic structures at the atomic level. The electronic structures display stronger modulations by the outmost shell charge transfer via surface electrostatic charge perturbation than the inter-bonding-orbital charge transfer at the liquid-solid interface, supporting more factors being involved in charge transfer via contact electrification. Meanwhile, we introduce the electrochemical cell model to quantify the charge transfer based on the pinning factor to linearly correlate the charge transfer and the electronic structures. The pinning factor exhibits a more direct visualization of the charge transfer at the liquid-solid interface. This work supplies critical guidance for describing, quantifying, and modulating the contact electrification induced charge transfer systems in triboelectric nanogenerators in future works.
Authors: Rui Zhang; Sihong Wang; Min-Hsin Yeh; Caofeng Pan; Long Lin; Ruomeng Yu; Yan Zhang; Li Zheng; Zongxia Jiao; Zhong Lin Wang Journal: Adv Mater Date: 2015-09-25 Impact factor: 30.849