材料科学
化学工程
生物炼制
水热碳化
电池(电)
电解质
碳化
制浆造纸工业
废物管理
化学
电极
生物燃料
复合材料
扫描电子显微镜
功率(物理)
物理
物理化学
量子力学
工程类
作者
Hyeong Ryeol Kim,Yunseong Ji,Youngsang Chun,Ju Hun Lee,Hah Young Yoo,Sungbong Kim,Ja Hyun Lee,Chulhwan Park,Seung Wook Kim
标识
DOI:10.1016/j.mtsust.2023.100456
摘要
Biorefinery using waste biomass is a key technology for sustainable development and is widely used in renewable energy production. However, biorefineries for energy storage applications have rarely been studied. In this study, a zinc-air battery (ZAB), which is one of the eco-friendlier energy storage devices, is proposed using the biorefinery process. The spherical glucose biochar (SGBC) was produced by a two-step process. The first step was the saccharification which included NaOH pretreatment and enzymatic hydrolysis. The second step was the carbonization including hydrothermal reactions and carbonization. The SGBC/MnO2/poly(3,4-ethylenedioxythiophene) (PEDOT) composite (SMP) was produced by in-situ polymerization with Fe(ClO4)3. The SMP exhibited excellent oxygen reduction reactions (ORR) and oxygen evolution reaction (OER) comparable to Pt/C due to the complementary effects of each component. Therefore, the fabricated flexible quasi-solid-state electrolyte SMP-based ZAB (SMP-ZAB) displayed high performance. The SMP-ZAB exhibited a peak power density of 101.2 mW/cm3. The discharge was maintained for 9.6 h at 5 mA/cm3 and the charge-discharge cycle was maintained for 16 h without remarkable potential change (5 min each for charge and discharge at 5 mA/cm3). In addition, the SMP-ZAB could theoretically produce 9540 cells from 1000 g of chestnut shell (CNS), demonstrating the potential of mass production for industrial-scale production (electrode area: 4 cm2). These results suggest that the SMP-ZAB could be applied as a future wearable energy device with an eco-friendly process.
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