| 학회 |
한국공업화학회 |
| 학술대회 |
2016년 가을 (10/26 ~ 10/28, 제주국제컨벤션센터(ICCJEJU)) |
| 권호 |
20권 2호 |
| 발표분야 |
에너지저장변환_포스터 |
| 제목 |
A cathode material with radially aligned hierarchical columnar structure for high energy density as a sodium-ion batteries |
| 초록 |
Provided that appropriate electrode materials can be discovered, substituting Na for Li should be accelerated due to the similar chemistries between Li and Na systems because Na is substantially less expensive than Li. Delivery of high capacity with good retention is a challenge in developing cathodes for rechargeable sodium-ion batteries. Here we present a radially aligned hierarchical columnar structure in spherical particles with varied chemical composition from the inner end (Na[Ni0.75Co0.02Mn0.23]O2) to the outer end (Na[Ni0.58Co0.06Mn0.36]O2) of the structure. With this cathode material, we show that an electrochemical reaction based on Ni2þ/3þ/4þ is readily available to deliver a discharge capacity of 157 mAha capacity retention of 80% during 300 cycles in combination with a hard carbon anode, and a rate capability of 132.6 mAhg-1. |
| 저자 |
유태연 |
| 소속 |
한양대 |
| 키워드 |
Sodium-Ion Battery; Cathode
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| E-Mail |
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