Artificial Graphite-Based Silicon Composite Anodes for Lithium-Ion Batteries
To develop an advanced anode for lithium-ion batteries, the electrochemical performance of a novel material comprising a porous artificial carbon (PAC)–Si composite was investigated. To increase the pore size and surface area of the composite, ammonium bicarbonate (ABC) was introduced during high-en...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-12-01
|
| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/14/23/1953 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850260579247194112 |
|---|---|
| author | Sae Min Park Tejaswi Tanaji Salunkhe Ji Hyeon Yoo Il Ho Kim Il Tae Kim |
| author_facet | Sae Min Park Tejaswi Tanaji Salunkhe Ji Hyeon Yoo Il Ho Kim Il Tae Kim |
| author_sort | Sae Min Park |
| collection | DOAJ |
| description | To develop an advanced anode for lithium-ion batteries, the electrochemical performance of a novel material comprising a porous artificial carbon (PAC)–Si composite was investigated. To increase the pore size and surface area of the composite, ammonium bicarbonate (ABC) was introduced during high-energy ball-milling, ensuring a uniform distribution of silicon within the PAC matrix. The physical and structural properties of the developed material were evaluated using several advanced techniques, including X-ray diffraction (XRD), transmission electron microscopy (TEM), and galvanostatic intermittent titration (GITT). Artificial graphite contains several macropores that can accommodate volume hysteresis and provide effective sites for anchoring Si nanoparticles, enabling efficient electrochemical reactions. GITT analysis revealed that the PAC-Si-CB-ABC composite exhibited superior lithium-ion diffusion compared to conventional graphite. The developed PAC(55%)-Si(45%)-CB-ABC electrode with PAA as the binder demonstrated a reversible capacity of 850 mAh g<sup>−1</sup> at 100 mA g<sup>−1</sup> and a high-rate capability of 600 mAh g<sup>−1</sup> at 2000 mA g<sup>−1</sup>. A full cell employing the NCM622 cathode exhibited reversible cyclability of 128.9 mAh g<sup>−1</sup> with a reasonable energy density of 323.3 Wh kg<sup>−1</sup>. These findings suggest that the developed composite is a useful anode system for advanced lithium-ion batteries. |
| format | Article |
| id | doaj-art-dc90f2e338314074b7d32aa1f640c804 |
| institution | OA Journals |
| issn | 2079-4991 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj-art-dc90f2e338314074b7d32aa1f640c8042025-08-20T01:55:37ZengMDPI AGNanomaterials2079-49912024-12-011423195310.3390/nano14231953Artificial Graphite-Based Silicon Composite Anodes for Lithium-Ion BatteriesSae Min Park0Tejaswi Tanaji Salunkhe1Ji Hyeon Yoo2Il Ho Kim3Il Tae Kim4Department of Chemical, Biological and Battery Engineering, Gachon University, Seongnam-si 13120, Gyeonggi-do, Republic of KoreaDepartment of Chemical, Biological and Battery Engineering, Gachon University, Seongnam-si 13120, Gyeonggi-do, Republic of KoreaDepartment of Chemical, Biological and Battery Engineering, Gachon University, Seongnam-si 13120, Gyeonggi-do, Republic of KoreaR&D Center, Black Materials Co., Ltd., Hwaseong-si 18255, Gyeonggi-do, Republic of KoreaDepartment of Chemical, Biological and Battery Engineering, Gachon University, Seongnam-si 13120, Gyeonggi-do, Republic of KoreaTo develop an advanced anode for lithium-ion batteries, the electrochemical performance of a novel material comprising a porous artificial carbon (PAC)–Si composite was investigated. To increase the pore size and surface area of the composite, ammonium bicarbonate (ABC) was introduced during high-energy ball-milling, ensuring a uniform distribution of silicon within the PAC matrix. The physical and structural properties of the developed material were evaluated using several advanced techniques, including X-ray diffraction (XRD), transmission electron microscopy (TEM), and galvanostatic intermittent titration (GITT). Artificial graphite contains several macropores that can accommodate volume hysteresis and provide effective sites for anchoring Si nanoparticles, enabling efficient electrochemical reactions. GITT analysis revealed that the PAC-Si-CB-ABC composite exhibited superior lithium-ion diffusion compared to conventional graphite. The developed PAC(55%)-Si(45%)-CB-ABC electrode with PAA as the binder demonstrated a reversible capacity of 850 mAh g<sup>−1</sup> at 100 mA g<sup>−1</sup> and a high-rate capability of 600 mAh g<sup>−1</sup> at 2000 mA g<sup>−1</sup>. A full cell employing the NCM622 cathode exhibited reversible cyclability of 128.9 mAh g<sup>−1</sup> with a reasonable energy density of 323.3 Wh kg<sup>−1</sup>. These findings suggest that the developed composite is a useful anode system for advanced lithium-ion batteries.https://www.mdpi.com/2079-4991/14/23/1953Li-ion batteriesanodeartificial carbonhigh-energy ball milling |
| spellingShingle | Sae Min Park Tejaswi Tanaji Salunkhe Ji Hyeon Yoo Il Ho Kim Il Tae Kim Artificial Graphite-Based Silicon Composite Anodes for Lithium-Ion Batteries Nanomaterials Li-ion batteries anode artificial carbon high-energy ball milling |
| title | Artificial Graphite-Based Silicon Composite Anodes for Lithium-Ion Batteries |
| title_full | Artificial Graphite-Based Silicon Composite Anodes for Lithium-Ion Batteries |
| title_fullStr | Artificial Graphite-Based Silicon Composite Anodes for Lithium-Ion Batteries |
| title_full_unstemmed | Artificial Graphite-Based Silicon Composite Anodes for Lithium-Ion Batteries |
| title_short | Artificial Graphite-Based Silicon Composite Anodes for Lithium-Ion Batteries |
| title_sort | artificial graphite based silicon composite anodes for lithium ion batteries |
| topic | Li-ion batteries anode artificial carbon high-energy ball milling |
| url | https://www.mdpi.com/2079-4991/14/23/1953 |
| work_keys_str_mv | AT saeminpark artificialgraphitebasedsiliconcompositeanodesforlithiumionbatteries AT tejaswitanajisalunkhe artificialgraphitebasedsiliconcompositeanodesforlithiumionbatteries AT jihyeonyoo artificialgraphitebasedsiliconcompositeanodesforlithiumionbatteries AT ilhokim artificialgraphitebasedsiliconcompositeanodesforlithiumionbatteries AT iltaekim artificialgraphitebasedsiliconcompositeanodesforlithiumionbatteries |