Charge transfer mediator additive facilitates uniform lithium deposition in ester-based electrolytes

Zhou Tianyi; Hu Lin; Lu Qichen; Liu Peng; Huang Ruling; Hu Bo; Bai Panxing; Duan Shaorong; Pin Xiaofan; Liu Rong; Zhang Kexin; Sun Xiaoxu; Wang Yidan; Li Yaoyu; Zhang Yujia; Yan Yi; Jiang Peng; Zhou Henghui; Wang Xiaolong

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Charge transfer mediator additive facilitates uniform lithium deposition in ester-based electrolytes

Updated：2026-05-14

- Charge transfer mediator additive facilitates uniform lithium deposition in ester-based electrolytes
- Charge transfer mediator additive facilitates uniform lithium deposition in ester-based electrolytes
- 中国化学工程学报（英文） 2026年90卷第2期页码：326-332
- Affiliations：
  
  China Huaneng Clean Energy Research Institute, Future Science Park, Beijing 102209, China
  CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
  University of Chinese Academy of Sciences, Beijing 100049, China
  College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Author bio：
  
  Corresponding authors. E-mail addresses: ty_zhou@qny.chng.com.cn (T. Zhou)
  Corresponding authors. E-mail addresses: pjiang@nanoctr.cn (P. Jiang)
  Corresponding authors. E-mail addresses: hhzhou@pku.edu.cn (H. Zhou)
  Corresponding authors. E-mail addresses: xl_wang@qny.chng.com.cn (X. Wang).
- Funds：
  
  China Huaneng Group Technology Project(HNKJ24-HF16)
- DOI：
  中图分类号：
- 收稿：2025-04-26，
  
  修回：2025-07-01，
  
  录用：2025-09-27，
  
  网络首发：2025-11-28，
  
  纸质出版：2026-02
- Accepted：
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Zhou Tianyi, Hu Lin, Lu Qichen, 等. Charge transfer mediator additive facilitates uniform lithium deposition in ester-based electrolytes[J]. 中国化学工程学报（英文）, 2026,90(2):326-332.

Zhou Tianyi, Hu Lin, Lu Qichen, et al. Charge transfer mediator additive facilitates uniform lithium deposition in ester-based electrolytes[J]. Chinese Journal of Chemical Engineering, 2026, 90(2): 326-332.
Zhou Tianyi, Hu Lin, Lu Qichen, 等. Charge transfer mediator additive facilitates uniform lithium deposition in ester-based electrolytes[J]. 中国化学工程学报（英文）, 2026,90(2):326-332. DOI：

Zhou Tianyi, Hu Lin, Lu Qichen, et al. Charge transfer mediator additive facilitates uniform lithium deposition in ester-based electrolytes[J]. Chinese Journal of Chemical Engineering, 2026, 90(2): 326-332. DOI：

摘要

Abstract

The lithium redox at the Li/electrolyte interface have significantly influences on the road achieving high performance lithium metal anode (LMA). Lithium dendrite formation caused by inhomogeneous Li deposition at Li/electrolyte interface is one of the critical challenges for rechargeable Li metal batteries (LMBs). Besides

the incompatibility of commonly used commercial ester-based electrolytes with metallic lithium also limits the application of LMA

while some reported additives can only maintain their efficiency in ether-based electrolytes. In this work

2-Mercaptopyridine (2Mpy)

which we have proposed in ether-based electrolyte application

is introduced into commercial ester-based electrolyte as a redox promoter

and the evolution of Li deposition and the mechanism of additive has been further investigated. The redox of Li

/Li is accelerated and the cycling performances of LMBs in ester-based electrolyte are greatly improved with 2Mpy participated. This work further demonstrates the effectiveness of charge transfer mediator additives such as 2Mpy in ester-based electrolyte

opening up a practical path to achieving high-performance additive for lithium metal batteries.

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references

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