Journal
NANO RESEARCH
Volume 15, Issue 3, Pages 2047-2051Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-021-3777-1
Keywords
aqueous ammonium-ion battery; alloxazine; anode material; pseudocapacitive effect
Categories
Funding
- National Natural Science Foundation of China [51771094, 21835004]
- Ministry of Education of China [B12015, IRT13R30]
- Tianjin Natural Science Foundation [18JCZDJC31500]
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The study introduces alloxazine as the anode for aqueous ammonium-ion battery, showing excellent rate performance and cycle stability. Paired with Prussian white analogs cathode, the full battery exhibits high energy density and power density.
Aqueous ammonium-ion battery (AAIB) has attracted much attention due to its low cost, safety, and environmental friendliness, but its electrode materials have many limitations. Here, alloxazine (ALO) is introduced as the anode for the AAIB. With its pseudocapacitive effect and fast diffusion kinetics of NH4+, ALO anode shows excellent rate performance with a specific capacity of 120 mAh/g at 40 C (10 A/g). The full battery is further fabricated by ALO anode and Prussian white analogs cathode. Its specific capacity can reach 110 mAh/g and it can work up to 10, 000 cycles with no obvious capacity fading at 20 C (5 A/g). In addition, the system delivers a high energy density of 122.5 Wh/kg and a power density of 5, 055 W/kg. This work broadens the application prospect of the AAIB.
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