焦耳加热驱动的生物质碳sp2-C域调制用于高性能双功能氧电催化

IF 26.6 1区材料科学 Q1 Engineering

Nano-Micro Letters Pub Date : 2025-04-18 DOI:10.1007/s40820-025-01725-0

Jiawei He, Yuying Zhao, Yang Li, Qixin Yuan, Yuhan Wu, Kui Wang, Kang Sun, Jingjie Wu, Jianchun Jiang, Baohua Zhang, Liang Wang, Mengmeng Fan

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引用次数: 0

摘要

亮点闪焦耳加热可控地提高了各种掺杂 N 的天然生物质基碳中 sp2 域的含量。 sp2-C畴的轴向调制降低了吡啶N和石墨N构型的电荷密度，从而实现了出色的氧电催化。使用优化催化剂组装的锌-空气电池实现了超过 1200 小时的循环稳定性，峰值功率密度达到 121 mW cm-2，超过了商用 Pt/C + RuO2 催化剂。

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Joule Heating-Driven sp2-C Domains Modulation in Biomass Carbon for High-Performance Bifunctional Oxygen Electrocatalysis

Highlights

The flash Joule heating controllably enhanced sp²-domains content in various N-doped natural biomass-based carbon.
The axial modulation of sp²-C domains decreased the charge density of pyridinic N and graphitic N configurations resulting into outstanding oxygen electrocatalysis.
The assembled Zn-air battery with optimized catalyst achieved an over 1200-h cycle stability with the peak power density of 121 mW cm⁻², exceeding the commercial Pt/C + RuO₂ catalysts.

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

32.60

自引率

4.90%

发文量

981

审稿时长

1.1 months

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary, and open-access journal published under the SpringerOpen brand. Nano-Micro Letters focuses on the science, experiments, engineering, technologies, and applications of nano- or microscale structures and systems in various fields such as physics, chemistry, biology, material science, and pharmacy.It also explores the expanding interfaces between these fields. Nano-Micro Letters particularly emphasizes the bottom-up approach in the length scale from nano to micro. This approach is crucial for achieving industrial applications in nanotechnology, as it involves the assembly, modification, and control of nanostructures on a microscale.