| Autor: |
Lei-Lei Lu, Yu-Yang Lu, Zheng-Xin Zhu, Jia-Xin Shao, Hong-Bin Yao, Shaogang Wang, Tian-Wen Zhang, Yong Ni, Xiu-Xia Wang, Shu-Hong Yu |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Science advances. 8(17) |
| ISSN: |
2375-2548 |
| Popis: |
Extremely fast-charging lithium-ion batteries are highly desirable to shorten the recharging time for electric vehicles, but it is hampered by the poor rate capability of graphite anodes. Here, we present a previously unreported particle size and electrode porosity dual-gradient structure design in the graphite anode for achieving extremely fast-charging lithium ion battery under strict electrode conditions. We develop a polymer binder–free slurry route to construct this previously unreported type particle size-porosity dual-gradient structure in the practical graphite anode showing the extremely fast-charging capability with 60% of recharge in 10 min. On the basis of dual-gradient graphite anode, we demonstrate extremely fast-charging lithium ion battery realizing 60% recharge in 6 min and high volumetric energy density of 701 Wh liter −1 at the high charging rate of 6 C. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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