A simple pyrolysis of bio-wastes to prepare N, and P co-doped porous carbon for lithium-sulfur batteries

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Letters Pub Date : 2023-01-15 DOI:10.1016/j.matlet.2022.133411

Kailiang Qi , Ruiying Lei , Fan Zhang , Yuzhou Luo

引用次数: 1

Abstract

Lithium-sulfur batteries (LSBs) are promising energy-storage devices, but are limited to rapid capacity decay due to the serious lithium polysulfide shuttling effect. Heteroatoms doped porous carbon holds great potential in LSBs cathode because of its high specific surface area, ample pore size and excellent electrical conductivity. Simple synthesis of porous carbon is crucial for practical application of LSBs. Herein, we fabricate an N, P co-doped porous carbon (NPPC) by one-step solid-state pyrolysis of the mixture of bio-wastes (peanut meal) and potassium hydroxide. The NPPC displays a hierarchically porous structure with high specific surface area (2090 m²/g). As a result, the S/NPPC shows a high initial reversible capacity of 1406 mAh g⁻¹ at 0.1 C and excellent cycling performance (512 mAh g⁻¹ at 3 C after 1000 cycles). This work develops a simple method to convert abandoned bio-wastes into ideal LSBs cathode materials.

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简单热解生物废弃物制备锂硫电池用N、P共掺杂多孔碳

锂硫电池是一种很有前途的储能设备，但由于多硫化锂的穿梭效应严重，其容量衰减速度快。杂原子掺杂多孔碳具有比表面积高、孔径大、导电性好等优点，在lbs阴极中具有很大的应用潜力。多孔碳的简单合成对lbs的实际应用至关重要。本文以生物废弃物(花生粕)和氢氧化钾为原料，采用一步固体热解法制备了N, P共掺杂多孔碳(NPPC)。NPPC具有高比表面积(2090 m2/g)的分层多孔结构。结果表明，S/NPPC在0.1℃下具有1406 mAh g−1的高初始可逆容量，并且在1000次循环后具有优异的循环性能(在3℃下512 mAh g−1)。本工作开发了一种将废弃生物废弃物转化为理想的lsb正极材料的简单方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive