A facile ice-templating-induced puzzle coupled with carbonization strategy for kilogram-level production of porous carbon nanosheets as high-capacity anode for lithium-ion batteries

IF 19.5 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Carbon Energy Pub Date : 2024-08-02 DOI:10.1002/cey2.633
Baolin Xing, Feng Shi, Zhanzhan Jin, Huihui Zeng, Xiaoxiao Qu, Guangxu Huang, Chuanxiang Zhang, Yunkai Xu, Zhengfei Chen, Jun Lu
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Abstract

Two-dimensional porous carbon nanosheets (PCNSs) are considered promising anodes for lithium-ion batteries due to their synergetic features arising from both graphene and porous structures. Herein, using naturally abundant and biocompatible sodium humate (SH) as the precursor, PCNSs are prepared from the laboratory scale up to the kilogram scale by a method of a facile ice-templating-induced puzzle coupled with a carbonization strategy. Such obtained SH-derived PCNSs (SH-PCNSs) possess a hierarchical porous structure dominated by mesopores having a specific surface area (~127.19 2 g−1), pore volume (~0.134 cm3 g−1), sheet-like morphology (~2.18 nm in thickness), and nitrogen/oxygen-containing functional groups. Owing to these merits, the SH-PCNSs present impressive Li-ion storage characteristics, including high reversible capacity (1011 mAh g−1 at 0.1 A g−1), excellent rate capability (465 mAh g−1 at 5 A g−1), and superior cycle stability (76.8% capacitance retention after 1000 cycles at 5 A g−1). It is noted that the SH-PCNSs prepared from the kilogram-scale production procedure possess comparable electrochemical properties. Furthermore, coupling with a LiNi1/3Co1/3Mn1/3O2 cathode, the full cells deliver a high capacity of 167 mAh g−1 at 0.2 A g−1 and exhibit an outstanding energy density of 128.8 Wh kg−1, highlighting the practicability of this porous carbon nanosheets and the potential commercial opportunity of the scalable processing approach.

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一种简便的冰雏形诱导拼图和碳化策略,用于生产公斤级多孔碳纳米片,作为锂离子电池的高容量负极
二维多孔碳纳米片(PCNSs)因其石墨烯和多孔结构的协同特性而被认为是锂离子电池的理想阳极。本文以天然丰富且具有生物相容性的腐植酸钠(SH)为前驱体,通过简便的冰诱导拼图法和碳化策略,制备出从实验室规模到公斤级的 PCNS。这种由 SH 衍生的 PCNSs(SH-PCNSs)具有分层多孔结构,以中孔为主,具有比表面积(约 127.19 2 g-1)、孔体积(约 0.134 cm3 g-1)、片状形态(厚度约 2.18 nm)和含氮/氧官能团。由于这些优点,SH-PCNS 具有令人印象深刻的锂离子存储特性,包括高可逆容量(0.1 A g-1 时为 1011 mAh g-1)、出色的速率能力(5 A g-1 时为 465 mAh g-1)和卓越的循环稳定性(5 A g-1 时循环 1000 次后电容保持率为 76.8%)。值得注意的是,通过公斤级生产程序制备的 SH-PCNS 具有类似的电化学特性。此外,与 LiNi1/3Co1/3Mn1/3O2 阴极耦合后,全电池在 0.2 A g-1 的条件下可提供 167 mAh g-1 的高容量,并表现出 128.8 Wh kg-1 的出色能量密度,这凸显了这种多孔碳纳米片的实用性以及可扩展加工方法的潜在商业机会。
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来源期刊
Carbon Energy
Carbon Energy Multiple-
CiteScore
25.70
自引率
10.70%
发文量
116
审稿时长
4 weeks
期刊介绍: Carbon Energy is an international journal that focuses on cutting-edge energy technology involving carbon utilization and carbon emission control. It provides a platform for researchers to communicate their findings and critical opinions and aims to bring together the communities of advanced material and energy. The journal covers a broad range of energy technologies, including energy storage, photocatalysis, electrocatalysis, photoelectrocatalysis, and thermocatalysis. It covers all forms of energy, from conventional electric and thermal energy to those that catalyze chemical and biological transformations. Additionally, Carbon Energy promotes new technologies for controlling carbon emissions and the green production of carbon materials. The journal welcomes innovative interdisciplinary research with wide impact. It is indexed in various databases, including Advanced Technologies & Aerospace Collection/Database, Biological Science Collection/Database, CAS, DOAJ, Environmental Science Collection/Database, Web of Science and Technology Collection.
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Issue Information Cover Image, Volume 6, Number 10, October 2024 Back Cover Image, Volume 6, Number 10, October 2024 Interface and doping engineering of V2C-MXene-based electrocatalysts for enhanced electrocatalysis of overall water splitting Issue Information
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