Lee, HyunSeok Kim, Sangtae Parmar, Narendra Singh Song, Jong-Han Chung, Kyung-yoon Kim, Kwang-Bum Choi, Ji-Won 2024-01-19T19:04:21Z 2024-01-19T19:04:21Z 2021-09-05 2019-09-15 0378-7753 https://pubs.kist.re.kr/handle/201004/119568 The search for transparent battery cathodes primarily focuses on patterned electrodes with feature sizes below the optical absorption limit. This significantly limits the electrode capacity, as a large electrode area remains unused to maintain transparency. Herein, we report transparent olivine LiFe0.77Mn0.23PO4 thin-film electrodes discovered through high-throughput continuous-composition-spread sputtering. After investigating six different Mn doping ratios, we found the optimal Mn-doped olivine composition with an enhanced discharge capacity of 45.7 mu A h/cm(2).mu m without using excessive nanosized features or carbon coating. The thin-film electrode exhibits a clear redox activity for both Fe3+/2+ and Mn3+/2+, resulting in an enhanced average voltage over LiFePO4 composition. A 250-nm-thick film exhibits an optical transmittance of over 80% in the visible region. The results in this study demonstrates that transparent cathode thin films can be developed based on phospho-olivines via doping strategies with high-throughput continuous-composition-spread sputtering methods. English ELSEVIER POSITIVE-ELECTRODE MATERIALS OPTICAL-PROPERTIES ROOM-TEMPERATURE PHOSPHO-OLIVINES LIMPO4 M LITHIUM PERFORMANCE ENERGY FE LIMNPO4 Carbon-free Mn-doped LiFePO4 cathode for highly transparent thin-film batteries Article 10.1016/j.jpowsour.2019.226713 1 JOURNAL OF POWER SOURCES, v.434 JOURNAL OF POWER SOURCES 434 scie scopus 000480664400044 2-s2.0-85067253901 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article POSITIVE-ELECTRODE MATERIALS OPTICAL-PROPERTIES ROOM-TEMPERATURE PHOSPHO-OLIVINES LIMPO4 M LITHIUM PERFORMANCE ENERGY FE LIMNPO4 Lithium thin-film battery Transparent Olivine LiFe1-xMnxPO4