High-Defect-Density Graphite for Superior-Performance Aluminum-Ion Batteries with Ultra-Fast Charging and Stable Long Life
Abstract Rechargeable aluminum-ion batteries (AIBs) are a new generation of low-cost and large-scale electrical energy storage systems. However, AIBs suffer from a lack of reliable cathode materials with insufficient intercalation sites, poor ion-conducting channels, and poor diffusion dynamics of l...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-08-01
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| Series: | Nano-Micro Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s40820-021-00698-0 |
| _version_ | 1818596179403866112 |
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| author | Jisu Kim Michael Ruby Raj Gibaek Lee |
| author_facet | Jisu Kim Michael Ruby Raj Gibaek Lee |
| author_sort | Jisu Kim |
| collection | DOAJ |
| description | Abstract Rechargeable aluminum-ion batteries (AIBs) are a new generation of low-cost and large-scale electrical energy storage systems. However, AIBs suffer from a lack of reliable cathode materials with insufficient intercalation sites, poor ion-conducting channels, and poor diffusion dynamics of large chloroaluminate anions (AlCl4 − and Al2Cl7 −). To address these issues, surface-modified graphitic carbon materials [i.e., acid-treated expanded graphite (AEG) and base-etched graphite (BEG)] are developed as novel cathode materials for ultra-fast chargeable AIBs. AEG has more turbostratically ordered structure covered with abundant micro- to nano-sized pores on the surface structure and expanded interlayer distance (d 002 = 0.3371 nm) realized by surface treatment of pristine graphite with acidic media, which can be accelerated the diffusion dynamics and efficient AlCl4 − ions (de)-intercalation kinetics. The AIB system employing AEG exhibits a specific capacity of 88.6 mAh g−1 (4 A g−1) and ~ 80 mAh g−1 at an ultra-high current rate of 10 A g−1 (~ 99.1% over 10,000 cycles). BEG treated with KOH solution possesses the turbostratically disordered structure with high density of defective sites and largely expanded d-spacing (d 002 = 0.3384 nm) for attracting and uptaking more AlCl4 − ions with relatively shorter penetration depth. Impressively, the AIB system based on the BEG cathode delivers a high specific capacity of 110 mAh g−1 (4 A g−1) and ~ 91 mAh g−1 (~ 99.9% over 10,000 cycles at 10 A g−1). Moreover, the BEG cell has high energy and power densities of 247 Wh kg−1 and 44.5 kW kg−1. This performance is one of the best among the AIB graphitic carbon materials reported for chloroaluminate anions storage performance. This finding provides great significance for the further development of rechargeable AIBs with high energy, high power density, and exceptionally long life. |
| first_indexed | 2024-12-16T11:27:48Z |
| format | Article |
| id | doaj.art-4125b8bb582e4dbb904a9410f0ca45ae |
| institution | Directory Open Access Journal |
| issn | 2311-6706 2150-5551 |
| language | English |
| last_indexed | 2024-12-16T11:27:48Z |
| publishDate | 2021-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nano-Micro Letters |
| spelling | doaj.art-4125b8bb582e4dbb904a9410f0ca45ae2022-12-21T22:33:19ZengSpringerOpenNano-Micro Letters2311-67062150-55512021-08-0113112210.1007/s40820-021-00698-0High-Defect-Density Graphite for Superior-Performance Aluminum-Ion Batteries with Ultra-Fast Charging and Stable Long LifeJisu Kim0Michael Ruby Raj1Gibaek Lee2Advanced Energy Materials Design Lab, School of Chemical Engineering, Yeungnam UniversityAdvanced Energy Materials Design Lab, School of Chemical Engineering, Yeungnam UniversityAdvanced Energy Materials Design Lab, School of Chemical Engineering, Yeungnam UniversityAbstract Rechargeable aluminum-ion batteries (AIBs) are a new generation of low-cost and large-scale electrical energy storage systems. However, AIBs suffer from a lack of reliable cathode materials with insufficient intercalation sites, poor ion-conducting channels, and poor diffusion dynamics of large chloroaluminate anions (AlCl4 − and Al2Cl7 −). To address these issues, surface-modified graphitic carbon materials [i.e., acid-treated expanded graphite (AEG) and base-etched graphite (BEG)] are developed as novel cathode materials for ultra-fast chargeable AIBs. AEG has more turbostratically ordered structure covered with abundant micro- to nano-sized pores on the surface structure and expanded interlayer distance (d 002 = 0.3371 nm) realized by surface treatment of pristine graphite with acidic media, which can be accelerated the diffusion dynamics and efficient AlCl4 − ions (de)-intercalation kinetics. The AIB system employing AEG exhibits a specific capacity of 88.6 mAh g−1 (4 A g−1) and ~ 80 mAh g−1 at an ultra-high current rate of 10 A g−1 (~ 99.1% over 10,000 cycles). BEG treated with KOH solution possesses the turbostratically disordered structure with high density of defective sites and largely expanded d-spacing (d 002 = 0.3384 nm) for attracting and uptaking more AlCl4 − ions with relatively shorter penetration depth. Impressively, the AIB system based on the BEG cathode delivers a high specific capacity of 110 mAh g−1 (4 A g−1) and ~ 91 mAh g−1 (~ 99.9% over 10,000 cycles at 10 A g−1). Moreover, the BEG cell has high energy and power densities of 247 Wh kg−1 and 44.5 kW kg−1. This performance is one of the best among the AIB graphitic carbon materials reported for chloroaluminate anions storage performance. This finding provides great significance for the further development of rechargeable AIBs with high energy, high power density, and exceptionally long life.https://doi.org/10.1007/s40820-021-00698-0Surface modificationEtched graphiteCathode materialsEnergy storageAluminum-ion batteries |
| spellingShingle | Jisu Kim Michael Ruby Raj Gibaek Lee High-Defect-Density Graphite for Superior-Performance Aluminum-Ion Batteries with Ultra-Fast Charging and Stable Long Life Nano-Micro Letters Surface modification Etched graphite Cathode materials Energy storage Aluminum-ion batteries |
| title | High-Defect-Density Graphite for Superior-Performance Aluminum-Ion Batteries with Ultra-Fast Charging and Stable Long Life |
| title_full | High-Defect-Density Graphite for Superior-Performance Aluminum-Ion Batteries with Ultra-Fast Charging and Stable Long Life |
| title_fullStr | High-Defect-Density Graphite for Superior-Performance Aluminum-Ion Batteries with Ultra-Fast Charging and Stable Long Life |
| title_full_unstemmed | High-Defect-Density Graphite for Superior-Performance Aluminum-Ion Batteries with Ultra-Fast Charging and Stable Long Life |
| title_short | High-Defect-Density Graphite for Superior-Performance Aluminum-Ion Batteries with Ultra-Fast Charging and Stable Long Life |
| title_sort | high defect density graphite for superior performance aluminum ion batteries with ultra fast charging and stable long life |
| topic | Surface modification Etched graphite Cathode materials Energy storage Aluminum-ion batteries |
| url | https://doi.org/10.1007/s40820-021-00698-0 |
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