MWCNT/δ-MnO2 복합체를 이용한 리튬-이산화탄소 전지에 관한 연구 = A Study of Li-CO2 Batteries using the MWCNT/δ-MnO2 Composite Cathode

국문 초록 (Abstract)

본 논문에서 수열합성법을 통해 제작한 MWCNT/δ-MnO2 복합체를 적용한 리튬-이산화탄소 전지를 제작하였다. 복합체는 나노시트 형태의 δ-MnO2와 복합체 내에서 전자 전달 경로를 제공하는 MWCNT로 구성된다. 제작된전지는 0.2C의전류속도로 100 사이클 (1000시간)까지안정적으로작동하였다. 이를통해 MWCNT/δ-MnO2 복합체가 리튬-이산화탄소 전지 연구에 있어 유망한 물질임을 알 수 있다.

다국어 초록 (Multilingual Abstract)

In this study, we developed a Li-CO2 battery utilizing a MWCNT/δ-MnO2 composite as the cathodematerial. The composite structure integrates the excellent electrical conductivity of multi-walled carbon nanotubes(MWCNT) with the catalytic activity of δ-MnO2 nanosheets, enhancing CO2 reduction and facilitating thedecomposition of Li2CO3 during cycling. The battery demonstrated consistent performance over 1000 hoursand 100 cycles. The post-cycling analysis confirmed that Li2CO3 was the main discharge product and that itreversibly formed and decomposed across charging and discharging cycles. Additionally, the catalytic effect ofδ-MnO2 nanosheets contributed to lower charging overpotentials, making MWCNT/δ-MnO2 a promising cathodematerial for advanced Li-CO2 battery applications.

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