构建3D多孔Cu<sub>1.81</sub>S/氮掺杂碳框架用于超快和长循环寿命钠离子存储

陈琛; 薛红宇; 胡启临; 王梦帆; 尚攀; 刘紫研; 彭涛; 张德扬; 罗永松

doi:10.1007/s12613-024-2890-z

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文章导航 > 矿物冶金与材料学报（英文） > 2025 > 二校

Chen Chen, Hongyu Xue, Qilin Hu, Mengfan Wang, Pan Shang, Ziyan Liu, Tao Peng, Deyang Zhang, and Yongsong Luo, Construction of 3D porous Cu_1.81S/nitrogen-doped carbon frameworks for ultrafast and long-cycle life sodium-ion storage, Int. J. Miner. Metall. Mater.,(2025). https://doi.org/10.1007/s12613-024-2890-z

Cite this article as:

Chen Chen, Hongyu Xue, Qilin Hu, Mengfan Wang, Pan Shang, Ziyan Liu, Tao Peng, Deyang Zhang, and Yongsong Luo, Construction of 3D porous Cu1.81S/nitrogen-doped carbon frameworks for ultrafast and long-cycle life sodium-ion storage, Int. J. Miner. Metall. Mater.,(2025). https://doi.org/10.1007/s12613-024-2890-z

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研究论文

构建3D多孔Cu_1.81S/氮掺杂碳框架用于超快和长循环寿命钠离子存储

1)
信阳师范大学物理电子工程学院，河南省微电能源重点实验室，河南省新能源储能技术国际联合实验室，信阳 464000，中国
2)
南阳师范学院物理与电子工程学院，南阳 473061，中国

* 共同第一作者

通讯作者:
陈琛 E-mail: chenpaper@outlook.com

罗永松 E-mail: ysluo@xynu.edu.cn

文章亮点

(1) 通过简单易行的溶胶凝胶法以及退火工艺制备出三维多孔Cu_1.81S/氮掺杂碳结构

(2) 系统的研究了硫化铜的含量对其结构和性能的影响

(3) 这种基于转换型储存机制的Cu_1.81S/NC电极，在半电池中展现出优异的倍率性能(在20.0 A·g^-1电流密度下，具有250.6 mAh·g^-1的比容量)和出色的循环稳定性(在10.0 A·g^-1下6000次循环保持70%的容量)

(4) 组装的钠离子全电池也具有较好的倍率性能（在5.0 A·g^-1的电流密度下，比容量为330.5 mAh·g^-1）和循环稳定性(在2.0 A·g^-1下循环750次后,容量保持率为86.9 %)

中文摘要

可充电钠离子电池(SIBs)是最重要的电化学储能装置之一，在大规模储能应用中具有广阔的发展前景。然而较大的Na⁺半径，会导致动力学反应迟缓、离子嵌入/脱出时体积变化引起的容量快速衰减等问题，使得钠离子电池表现出较差的可逆性、循环稳定性和倍率性能，严重限制了它的实际应用。本文以金属硫化物为研究对象，以聚乙烯吡咯烷酮(PVP)为碳源，硝酸铜和硫脲为发泡剂，采用溶胶-凝胶和退火工艺，在三维多孔氮掺杂碳基体中嵌入Cu_1.81S纳米颗粒。旨在开发一种合成方法简单易行且具有优异电化学性能的金属硫化物作为钠离子电池的负极材料。通过系统的研究了硫化铜的含量对其结构和性能的影响，结果表明：当铜盐添加量为0.8 g时，此时组装的半电池展现出优异的倍率性能(在20.0 A·g⁻¹电流密度下，具有250.6 mAh·g⁻¹的比容量)和出色的循环稳定性(在10.0 A·g⁻¹下6000次循环保持70%的容量) ，电极材料的电化学性能达到最佳。此外，在全电池测试中也具有较好的倍率性能和循环性能。这些优异的性能与其微观结构有关: 纳米复合材料的多孔结构，它可以缓解Cu_1.81S纳米颗粒在放电/充电过程中的体积膨胀和团聚，促进电子转移和离子扩散，提高电极材料的电导率和结构稳定性。由此可知，构建合理的纳米结构能够改善钠负极材料面临的动力学反应迟缓、体积膨胀等问题，也为高倍率和超稳定转换型材料作为快速充电和长寿命SIBs负极的应用提供了可能。

关键词:

Research Article

Construction of 3D porous Cu_1.81S/nitrogen-doped carbon frameworks for ultrafast and long-cycle life sodium-ion storage

+ Author Affiliations

Abstract

Abstract

Transition metal sulfides have great potential as anode materials for sodium-ion batteries (SIBs) due to their high theoretical specific capacities. However, the inferior intrinsic conductivity and large volume variation during sodiation–desodiation processes seriously affect its high-rate and long-cycle performance, unbeneficial for the application as fast-charging and long-cycling SIBs anode. Herein, the three-dimensional porous Cu_1.81S/nitrogen-doped carbon frameworks (Cu_1.81S/NC) are synthesized by the simple and facile sol–gel and annealing processes, which can accommodate the volumetric expansion of Cu_1.81S nanoparticles and accelerate the transmission of ions and electrons during Na⁺ insertion/extraction processes, exhibiting the excellent rate capability (250.6 mAh·g⁻¹ at 20.0 A·g⁻¹) and outstanding cycling stability (70% capacity retention for 6000 cycles at 10.0 A·g⁻¹) for SIBs. Moreover, the Na-ion full cells coupled with Na₃V₂(PO₄)₃/C cathode also demonstrate the satisfactory reversible specific capacity of 330.5 mAh·g⁻¹ at 5.0 A·g⁻¹ and long-cycle performance with the 86.9% capacity retention at 2.0 A·g⁻¹ after 750 cycles. This work proposes a promising way for the conversion-based metal sulfides for the applications as fast-charging sodium-ion battery anode.
- copper sulfide nanoparticles;
- porous carbon framework;
- fast charging;
- long-cycle performance;
- sodium-ion full batteries

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构建3D多孔Cu_1.81S/氮掺杂碳框架用于超快和长循环寿命钠离子存储

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Construction of 3D porous Cu_1.81S/nitrogen-doped carbon frameworks for ultrafast and long-cycle life sodium-ion storage

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构建3D多孔Cu1.81S/氮掺杂碳框架用于超快和长循环寿命钠离子存储

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Construction of 3D porous Cu1.81S/nitrogen-doped carbon frameworks for ultrafast and long-cycle life sodium-ion storage

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构建3D多孔Cu_1.81S/氮掺杂碳框架用于超快和长循环寿命钠离子存储

Construction of 3D porous Cu_1.81S/nitrogen-doped carbon frameworks for ultrafast and long-cycle life sodium-ion storage