Keggin and Dawson polyoxometalates as electrodes for flexible and transparent piezoelectric nanogenerators to efficiently utilize mechanical energy in the environment  

多酸用于柔性透明压电纳米发电机的电极材料以高效收集环境中的机械能（英文）

作　　者：Peng He Weilin Chen Jianping Li Hong Zhang Yunwu Li Enbo Wang 何鹏;陈维林;李建平;张宏;李允伍;王恩波

机构地区：[1]Key Laboratory of Polyoxometalate Science of Ministry of Education,Faculty of Chemistry,Northeast Normal University,Changchun 130024,China [2]Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology,School of Chemistry and Chemical Engineering,Liaocheng University,Liaocheng 252059,China

出　　处：《Science Bulletin》2020年第1期35-44,M0004,共11页科学通报（英文版）

基　　金：supported by the National Natural Science Foundation of China (21871041, 21801038, and 21771095);the Natural Science Foundation of Jilin Province (20180101298JC), the Talent Development Foundation of Jilin Province;the China Postdoctoral Science Foundation, China funded project (2018M630312, 2019T120227);the Fundamental Research Funds for the Central Universities, China (2412018QD003);the Technology Foundation for Selected Overseas Chinese Scholars of Personnel Ministry of China, China;Science and Technology Activities Project Preferential Funding for Selected Overseas Chinese Scholars of Jilin Province Human Resources and Social Bureau, China;the Science and Technology Research Foundation of the Thirteenth Five Years of Jilin Educational Committee, China (JJKH20190271KJ)

摘　　要：In recent years,piezoelectric nanogenerators(PENGs)have been developed as a promising energyharvesting electronic device.However,the electrodes of most PENGs devices are precious metals,thus increasing the production cost.Here,we propose a flexible transparent PENGs with polyoxometalates(POMs)as the electrodes;it can effectively utilize ambient mechanical energy to generate electricity.Five types of polyoxometalates with different structures and compositions are selected as the electrode materials for PENGs for the first time,and the output performance of different PENGs electrode devices is tested.The PENG device with(NH4)6 P2 Mo18 O62 as the electrode can steadily provide a high electric output with an open-circuit voltage of 2.8 m V and a short-circuit current of 8.5 mA at the bending degree of90°.At the same time,the transmission spectrum shows that the average visible transmittance(AVT)of PENG can reach 31%,thus outperforming the benchmark for window applications.Finally,the working mechanism,force analysis,repeatability,and stability of PENG are systematically evaluated.All the studies show that this flexible transparent device has potential application prospect in wearable electronic devices.近年来,压电纳米发电机逐渐成为一种颇有前途的能量收集设备.然而,传统的压电纳米发电机的电极多采用贵金属材料,这大大增加了设备的成本.本文提出了一种以多金属氧酸盐(多酸)为电极材料的柔性透明的压电纳米发电机,它可以高效地将环境中的机械能转换为电能.选用了5种不同的多酸作电极材料,并对压电纳米发电机的各项性能进行了测试.结果表明,纳米发电机的性能与多酸的能级有关,多酸与氧化锌的能级差可以用来评估电子注入的动力.利用多酸制备的柔性透明的压电纳米发电机具有应用于智能窗和可穿戴设备的潜力.

关 键 词：Polyoxometalate FLEXIBLE Transparent Piezoelectric nanogenerator Electrode materials 

分 类 号：TM31[电气工程—电机] TB383.1[一般工业技术—材料科学与工程]