Li Ren'ai, Zhang Kaili, Chen Guangxue
State Key Laboratory of Pulp & Paper Engineering, South China University of Technology, Guangzhou 510640, China.
Materials (Basel). 2019 Jan 21;12(2):322. doi: 10.3390/ma12020322.
Conductive paper has the advantages of being low-cost, lightweight, disposable, flexible, and foldable, giving it promising potential in future electronics. However, mainstream conductive papers are opaque and rigid, which seriously affect the wide application of conductive paper. In this paper, we demonstrate a highly transparent, flexible, and conductive paper, fabricated by mixing cellulose nanofibers (CNFs) with silver nanowires (AgNWs) and then plasticizing with choline chloride/urea solvent. The as-prepared CNF/AgNW paper showed high transparency (90% transmittance) and flexibility (27% strain), and low sheet resistance (56 Ω/sq). Moreover, the resistance change of CNF/AgNW paper increased only ~1.1% after 3000 bending-unbending cycles under a 150° large angle, implying a long working life and stability. In view of this, our methodology has the potential to open a new powerful route for fabrication of paper-based green electronics.
导电纸具有低成本、重量轻、可一次性使用、柔韧性好和可折叠等优点，这使其在未来电子领域具有广阔的应用潜力。然而，主流的导电纸不透明且坚硬，这严重影响了导电纸的广泛应用。在本文中，我们展示了一种高度透明、柔韧且导电的纸张，它是通过将纤维素纳米纤维（CNF）与银纳米线（AgNW）混合，然后用氯化胆碱/尿素溶剂进行增塑制备而成。所制备的CNF/AgNW纸具有高透明度（90%的透光率）和柔韧性（27%的应变），以及低表面电阻（56 Ω/sq）。此外，在150°大角度下经过3000次弯曲-伸直循环后，CNF/AgNW纸的电阻变化仅增加了约1.1%，这意味着其具有较长的使用寿命和稳定性。鉴于此，我们的方法有潜力为纸质绿色电子产品的制造开辟一条新的有力途径。
