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Published on: November 11, 2013
Developing High-Energy, Stable All-Solid-State Lithium Batteries Using Aluminum-Based Anodes and High-Nickel
Xin Wu1, Meiyu Wang2, Hui Pan1
1Center of Energy Storage Materials & Technology, Department of Energy Science and Engineering, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid-State Microstructures, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, People's Republic of China.
This study introduces a pre-lithiated aluminum anode for all-solid-state lithium batteries (ASSLBs), demonstrating exceptional stability and high energy density. The developed ASSLB achieves 1000 cycles with 82.2% capacity retention, offering a promising solution for advanced battery technology.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Aluminum (Al) offers superior conductivity, ductility, and chemical compatibility for all-solid-state lithium batteries (ASSLBs).
- It presents a viable alternative to reactive lithium metal and mechanically weak silicon anodes.
- ASSLBs require stable anode materials for enhanced performance and longevity.
Purpose of the Study:
- To investigate the interfacial stability of a pre-lithiated aluminum anode with Li6PS5Cl (LPSCl) solid electrolyte.
- To develop a high-energy-density ASSLB using a pre-lithiated Al anode, a high-nickel cathode, and LPSCl electrolyte.
- To evaluate the cycling performance and energy density of the designed ASSLB.
Main Methods:
- Anode pre-lithiation technique applied to aluminum.
- Fabrication of an all-solid-state lithium battery incorporating a pre-lithiated Al anode, LiNi0.8Co0.1Mn0.1O2 cathode, and LPSCl electrolyte.
- Electrochemical cycling tests to assess stability, capacity retention, and energy density.
Main Results:
- The pre-lithiated Al anode showed stable cycling for over 1200 hours with the LPSCl electrolyte.
- The ASSLB achieved stable cycling for 1000 cycles at 0.2C with 82.2% capacity retention.
- A specific energy of 375 Wh kg-1 was reached, with over 85.9% capacity retained after 100 cycles at a critical negative-to-positive ratio of 1.1.
Conclusions:
- Pre-lithiated aluminum is a highly stable anode material for ASSLBs.
- The developed ASSLB demonstrates high energy density and excellent cycling stability.
- This research offers a viable pathway for low-cost, high-performance ASSLBs.
