Amino-Siloxane Grafted Cellulose Solid Electrolyte

High-voltage fast Li-ion conduction

Amino coordination builds continuous Li-ion highways while disrupting cellulose crystallinity, balancing high-voltage tolerance with Li-metal compatibility.

Cao, Wenze · Jinghua, Wu · Jierui, Ye · 79516675 · Guo, Penghui · Zhao, Zenan · 80379624 · Zhao, Zhiguang · Wang, Jing · Luo, Yufeng · Mu, Daobin · Yang, Weiyou · Chen, Pan · Wu, Feng · Tan, Guoqiang

Advanced Energy Materials 2026

Specifications

Li-ion conductivity

{'zh': '1×10⁻³', 'en': '1×10⁻³'} S cm⁻¹

Electrochemical oxidation potential

{'zh': '5', 'en': '5'} V

LiFePO₄ cell cycle life

{'zh': '592', 'en': '592'} cycles

LiNi₀.₈Co₀.₁Mn₀.₁O₂ cell cycle life

{'zh': '403', 'en': '403'} cycles

Advantages

Wide voltage window

Oxidation potential raised to 5 V, overcoming the poor high-voltage tolerance of cellulose electrolytes and enabling use with high-voltage cathodes.

Fast ion transport

Amino coordination creates continuous and uniform Li-ion transport highways and disrupts cellulose crystallinity, yielding conductivity of 1×10⁻³ S cm⁻¹.

Long cycle life

LiFePO₄ cells assembled with this electrolyte achieve 592 cycles at 0.5 C until capacity reaches 80%.

Applications

• Li-metal batteries：Compatible with Li metal, enabling direct assembly of solid-state Li-metal batteries.
• Solid-state batteries：Supplies a solid electrolyte membrane with high ionic conductivity and oxidation potential, eliminating liquid electrolytes.
• High-voltage cathodes：Oxidation potential of 5 V allows pairing with high-voltage cathodes like LiNi₀.₈Co₀.₁Mn₀.₁O₂.
• Sustainable energy storage：Based on renewable, biodegradable cellulose with verified benefits in energy conservation and carbon reduction.