Dual Vertically Aligned Electrode-Inspired High-Capacity Lithium Batteries

Mu, Yongbiao1,2,3; Chen, Yuzhu2; Wu, Buke1,2,3; Zhang, Qing1,2,3; Lin, Meng2; Zeng, Lin1,2,3

2022-08-01

10.1002/advs.202203321

ADVANCED SCIENCE   Impact Factor & Quartile

2198-3844

Lithium (Li) dendrite formation and poor Li+ transport kinetics under high-charging current densities and capacities inhibit the capabilities of Li metal batteries (LMBs). This study proposes a 3D conductive multichannel carbon framework (MCF) with homogeneously distributed vertical graphene nanowalls (VGWs@MCF) as a multifunctional host to efficiently regulate Li deposition and accelerate Li+ transport. A novel electrode for both Li|VGWs@MCF anode and LFP|VGWs@MCF (NCM811|VGWs@MCF) cathode is designed and fabricated using a dual vertically aligned architecture. This unique hierarchical structure provides ultrafast, continuous, and smooth electron transport channels; furthermore, it furnishes outstanding mechanical strength to support massive Li deposition at ultrahigh rates. As a result, the Li|VGWs@MCF anode exhibits outstanding cycling stability at ultrahigh currents and capacities (1000 h at 10 mA cm(-2) and 10 mAh cm(-2), and 1000 h at 30 mA cm(-2) and 60 mAh cm(-2)). Moreover, full cells made of such 3D anodes and freestanding LFP|VGWs@MCF (NCM811|VGWs@MCF) cathodes with conspicuous mass loading (45 mg cm(-2) for LFP and 35 mg cm(-2) for NCM811) demonstrate excellent areal capacities (6.98 mAh cm(-2) for LFP and 5.6 mAh cm(-2) for NCM811). This strategy proposes a promising direction for the development of high-energy-density practical Li batteries that combine safety, performance, and sustainability.

dual vertically aligned architectures lithium metal batteries (LMBs) ultrahigh currents and capacities vertical graphene nanowalls

SCI

English

First ; Corresponding

Shenzhen Fundamental Research Programs["JCYJ20190809143815709","JCYJ20200109141216566"] ; Guangdong Natural Science Foundation[2021A1515010412] ; Shenzhen Key Laboratory of Advanced Energy Storage[202204013000060]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000843380000001

WILEY

Web of Science

1.Southern Univ Sci & Technol, Shenzhen Key Lab Adv Energy Storage, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen 518055, Peoples R China

Mu, Yongbiao,Chen, Yuzhu,Wu, Buke,et al. Dual Vertically Aligned Electrode-Inspired High-Capacity Lithium Batteries[J]. ADVANCED SCIENCE,2022.

Mu, Yongbiao,Chen, Yuzhu,Wu, Buke,Zhang, Qing,Lin, Meng,&Zeng, Lin.(2022).Dual Vertically Aligned Electrode-Inspired High-Capacity Lithium Batteries.ADVANCED SCIENCE.

Mu, Yongbiao,et al."Dual Vertically Aligned Electrode-Inspired High-Capacity Lithium Batteries".ADVANCED SCIENCE (2022).