HOME > Profile > Marcela, Calpa
- Address
- 305-0044 1-1 Namiki Tsukuba Ibaraki JAPAN [Access]
Research
PublicationsNIMS affiliated publications since 2004.
Research papers
- Marcela Calpa, Kei Kubota, Jittraporn Saengkaew, Shoichi Matsuda, Kazunori Takada. The role of grain boundaries in suppressing particle fracture in Li-rich layered oxide cathode materials. Journal of Power Sources. 634 (2025) 236473 10.1016/j.jpowsour.2025.236473
- Marcela Calpa, Kei Kubota, Emiko Mizuki, Manai Ono, Shoichi Matsuda, Kazunori Takada. Voltage hysteresis hidden in an asymmetric reaction pathway. Energy Storage Materials. 63 (2023) 103051 10.1016/j.ensm.2023.103051
Presentations
- 長谷川 源, マルセル カルパ, 桑田 直明. 電池材料における固体中のイオンダイナミクスの高度解析. SATテクノロジー・ショーケース2025. 2025
- Marcela, Calpa, KUBOTA, Kei, MATSUDA, Shoichi, TAKADA, Kazunori. Voltage Hysteresis without Cation Migration in Li-Rich Layered Oxides: A Discrepancy in the Intermediate Crystal Phases. ECS PRiME 2024. 2024
- Marcela, Calpa. Studies on Li2RuO3 as a Li-rich layered oxide cathode material: from atomic to microscale characterization. Hokkaido Summer Institute. 2024 Invited
Research Center for Energy and Environmental Materials (GREEN)
Functional materials for next-generation Lithium batteries
Solid state batteries, Li-rich cathode materials
Overview
Energy storage systems with enhanced safety and energy density that store renewable energy and power EVs are necessary to achieve a low-carbon society. Solid-state electrolytes are developed to improve the safety of Lithium batteries. High-capacity cathodes are explored to improve their energy density.
Novelty and originality
• A scalable liquid-phase process is used to prepare high ionic conductive and nano-sized sulfide-based solid electrolytes.
• The unexpected high air stability of Li3PS4-LiI solid electrolytes is uncovered
• Solid electrolyte coating on active materials enables its full utilization in solid-state batteries
Details
Sulfide electrolytes with high ionic conductivity, small particle size, and high air stability are prepared by a scalable solution synthesis and applied to solid state batteries. The use of Li-rich cathode materials holds promise to enhance the energy density of solid-state batteries further.
Summary
• Liquid-phase processes are proposed for the industrial scaling-up of sulfide solid electrolytes.
• Solid state batteries with enhanced safety are expected to power future electric vehicles.
