K<sup>+</sup>预插层调控1T’-MoTe<sub>2</sub>层间结构及其水系锌离子电池储锌性能研究

唐晨欣; 卢至行

doi:10.19799/j.cnki.2095-4239.2026.0862

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K⁺预插层调控1T’-MoTe₂层间结构及其水系锌离子电池储锌性能研究

储能XXXX | 更新时间：2026-10-31

- K⁺预插层调控1T’-MoTe₂层间结构及其水系锌离子电池储锌性能研究
- K⁺ Pre-Intercalation Regulated Interlayer Spacing of 1T′-MoTe₂ for High-Performance Aqueous Zinc-Ion Batteries
- 储能科学与技术 2026年页码：1-12
- 作者机构：
  
  福建师范大学环境与资源学院，福建福州 350117
- 作者简介：
  
  唐晨欣（2002—），女，硕士研究生，在读，研究方向为水系锌离子电池正极材料，E-mail：2426146458@qq.com；
  卢至行，副教授，研究方向为二维纳米材料的可控制备与光电、催化、储能性质，E-mail：zxlu@fjnu.edu.cn。
- 基金信息：
  
  国家自然科学基金项目(22605048)
- DOI：10.19799/j.cnki.2095-4239.2026.0862
  中图分类号： TM912;O614.61
- 收稿：2026-10-09，
  
  修回：2026-10-23，
  
  网络首发：2026-10-31，
- 稿件说明：
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唐晨欣, 卢至行. K⁺预插层调控1T'-MoTe₂层间结构及其水系锌离子电池储锌性能研究[J]. 储能科学与技术, XXXX, XX(XX): 1-12. DOI: 10.19799/j.cnki.2095-4239.2026.0862.

TANG Chenxin, LU Zhixing. K⁺ Pre-Intercalation Regulated Interlayer Spacing of 1T′-MoTe₂ for High-Performance Aqueous Zinc-Ion Batteries[J]. Energy Storage Science and Technology, XXXX, XX(XX): 1-12. DOI: 10.19799/j.cnki.2095-4239.2026.0862.
唐晨欣, 卢至行. K⁺预插层调控1T'-MoTe₂层间结构及其水系锌离子电池储锌性能研究[J]. 储能科学与技术, XXXX, XX(XX): 1-12. DOI: 10.19799/j.cnki.2095-4239.2026.0862. DOI：

TANG Chenxin, LU Zhixing. K⁺ Pre-Intercalation Regulated Interlayer Spacing of 1T′-MoTe₂ for High-Performance Aqueous Zinc-Ion Batteries[J]. Energy Storage Science and Technology, XXXX, XX(XX): 1-12. DOI: 10.19799/j.cnki.2095-4239.2026.0862. DOI：

摘要

金属性1T′-MoTe

导电性优异，但其层状结构在Zn

反复嵌入/脱出过程中易发生不可逆坍塌，导致容量快速衰减，限制了其在水系锌离子电池中的应用。针对这一问题，本研究提出K

电化学预插层策略，以CH

COOK溶液为电解液通过恒流充放电和循环伏安两步活化，将K

嵌入1T′-MoTe

/CC层间，以扩大层间距并缓冲体积变化，并系统探究了不同CH

COOK浓度对插层效果的影响。结果表明，1.0 M CH

COOK预插层效果最优，在0.2 A g

-1

下比容量由未插层的113 mAh g

-1

提升至260 mAh g

-1

，循环初期的容量骤降得到有效抑制。在1 A g

-1

下循环1200次，K-1T′-MoTe

/CC-1.0的容量保持率达到82.8%，远高于未插层样品的59.2%，库仑效率维持在约100%。不同扫速CV分析表明，插层后b值由0.715增至0.737，说明K

插层扩大了层间距，加快了离子迁移和扩散速率，改善了电极反应动力学。非原位XRD和SEM及循环后的XPS证实，K

预插层有效维持了活性材料循环过程中的层状结构和电极完整性。此外，该策略在2H-MoTe

和Chevrel相Mo

中同样有效，初步验证了其在Mo-Te体系中的普适性。本工作为Mo-Te基材料在水系锌离子电池中的应用提供了可行的结构调控策略。

Abstract

Metallic 1T′-MoTe

exhibits excellent electrical conductivity

but its layered structure is prone to irreversible collapse during repeated Zn

insertion/extraction

leading to rapid capacity decay and limiting its application in aqueous zinc-ion batteries. To address this issue

this study proposes a K

electrochemical pre-intercalation strategy. Using CH

COOK solution as the electrolyte

is intercalated into the interlayers of 1T′-MoTe

/CC through a two-step activation of galvanostatic charge–discharge and cyclic voltammetry

thereby expanding the interlayer spacing and buffering volume changes. The effects of different CH

COOK concentrations on the intercalation are systematically investigated. The results show that 1.0 M CH

COOK pre-intercalation achieves the best performance. The specific capacity increases from 113 to 260 mAh g

-1

at 0.2 A g

-1

and the initial capacity decay is effectively suppressed. After 1200 cycles at 1 A g

-1

K-1T′-MoTe

/CC-1.0 delivers a

capacity retention of 82.8%

much higher than the 59.2% of the pristine sample

with the Coulombic efficiency remaining at approximately 100%. CV analysis at different scan rates shows that the b value increases from 0.715 to 0.737 after intercalation

indicating that K

intercalation expands the interlayer spacing

accelerates ion migration and diffusion

and improves electrode reaction kinetics. Ex situ XRD and SEM confirm that K

pre-intercalation effectively maintains the layered structure and electrode integrity of the active material during cycling. Moreover

this strategy is also effective in 2H-MoTe

and Chevrel-phase Mo

preliminarily verifying its universality in the Mo-Te system. This work provides a feasible structural regulation strategy for the application of Mo-Te-based materials in aqueous zinc-ion batteries.

关键词

Keywords

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K+预插层调控1T’-MoTe2层间结构及其水系锌离子电池储锌性能研究

K+ Pre-Intercalation Regulated Interlayer Spacing of 1T′-MoTe2 for High-Performance Aqueous Zinc-Ion Batteries

DOI：10.19799/j.cnki.2095-4239.2026.0862

摘要

Abstract

关键词

Keywords

references

K⁺预插层调控1T’-MoTe₂层间结构及其水系锌离子电池储锌性能研究

K⁺ Pre-Intercalation Regulated Interlayer Spacing of 1T′-MoTe₂ for High-Performance Aqueous Zinc-Ion Batteries