Ultrathin Multi-Nanolayered Cu₂Nb₃₄O₈₇₋ₓ

Oxygen vacancies, fast charging

First synthesis of ultrathin multi-nanolayered structure with oxygen vacancies via PVP-assisted solvothermal method, significantly shortening Li⁺ diffusion paths and enhancing cycling stability.

Qing, Li · Zhang, Yu · Li, Chao · Zhang, Jincang · Che, Renchao

Journal of Colloid and Interface Science 2023

Specifications

锂离子电容器中能量密度

{'zh': '97.9', 'en': ''} Wh kg⁻¹

锂离子电容器中功率密度

{'zh': '17,500', 'en': ''} W kg⁻¹

Nanolayer thickness

{'zh': '', 'en': '10'} nm

Advantages

Reversible capacity 315.3 mAh g⁻¹ after 300 cycles at 1 C

Capacity retention 85.7% after 1000 cycles at 10 C