文章信息/Info

Title:

Recent Progress on Electrospun Nanofibers for Zinc-Air Batteries

文章編號:

1674-3962(2020)07-0618-09

作者:

郝亞楠; 謝登裕; 韓四林; 李林林; 薛建軍; 彭生杰

(南京航空航天大學材料科學與技術學院 江蘇省高效電化學儲能技術重點實驗室，江蘇 南京 211106)

Author(s):

HAO Yanan;  XIE Dengyu;  HAN Silin;  LI Linlin;  XUE Jianjun;  PENG Shengjie

(Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China)

關鍵詞:

靜電紡絲; 納米纖維; 自支撐結構; 雙功能電催化劑; 鋅-空氣電池

Keywords:

electrospinning;  nanofibers;  self-supported structure;  bifunctional electrocatalysts;  zinc-air batteries

分類號:

TM911.41

DOI:

10.7502/j.issn.1674-3962.202005030

文獻標志碼:

A

摘要:

日益嚴重的環境污染與能源危機成為人類社會可持續發展進程中的最大阻礙。鋅-空氣電池作為一類很有發展潛力的電化學儲能裝置，因其高能量密度和環境友好等特點在能源領域引發了廣泛關注，然而空氣電極中的氧還原反應和析氧反應動力學緩慢，嚴重限制了它的商業化應用，因此當前迫切需要開發高效廉價的非貴金屬雙功能催化劑。靜電紡絲制備的一維納米纖維具有高孔隙率和大比表面積等優點，縮短了離子擴散距離并提供了更多的反應活性位點，有效改善了活性物質的嵌入/脫出反應動力學，在儲能器件領域尤其是鋅�部諝怆姵刂杏袕V闊的應用前景。首先簡要介紹了靜電紡絲技術，然后探討了電紡纖維及其自支撐結構的氧還原/析氧反應的催化反應活性，并通過經典的文獻案例討論了電紡纖維在液態和柔性固態鋅-空氣電池中的應用研究最新進展，最后，對基于電紡纖維催化劑的鋅-空氣電池應用面臨的挑戰和未來的發展方向進行了展望。

Abstract:

Increasingly serious environmental pollution and exhausting energy crisis become the biggest obstacle in the process of sustainable development of human society. As a potential electrochemical energy storage device, zinc-air batteries (ZABs) received considerable interest in the field of energy storage because of their high energy density and environmental friendliness. However, the sluggish kinetics of the oxygen reduction and oxygen evolution reactions limit the commercial development of ZABs, so there is an urgent need to develop efficient and low-cost non-noble metal bifunctional catalysts. Electrospun one�瞕imensional (1D) nanofibers with unique properties such as high porosity and large specific surface area have a profound impact on providing more active sites, shortening the diffusion pathways for ions/electrons, and improving the kinetics vis-à-vis intercalation/de-intercalation of the active substrate, which endow them with promising application in the field of energy storage devices, especially ZABs. This review first introduces the electrospinning technique and the oxygen reduction/evolution reaction activity of electrospun nanofibers with a self-supported structure, as well as the application of electrospun nanofibers in the liquid and flexible solid-state ZABs, which would demonstrate the superiority of electrospinning technique towards ZABs. Finally, the remaining challenges and research directions of ZABs based on electrospun nanofibers electrocatalysts are shortly discussed.