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High-Mass Loading Nickel-Rich Cathode Electrode Design Incorporating Multidimensional Carbon Conductive Additives to
Kashif Saleem Saqib1, Jae Hong Choi1, Sungwoo Park1
1Department of Smart Green Technology Engineering, Pukyong National University, 45, Yongso-road, Nam-gu, Busan 48547, Republic of Korea.
ACS Applied Materials & Interfaces
|August 18, 2025
Summary
Researchers enhanced high-capacity lithium-ion batteries by adding dual carbon materials to the NCM811 cathode. This improves conductivity and porosity, boosting energy density and performance for sustainable energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Lithium-ion batteries (LIBs) are crucial for sustainable energy, with demand for high-capacity, nickel-rich cathodes increasing.
- High-mass loading electrodes are key for enhancing LIB energy density but face challenges in rate capability due to poor electron/ion transport.
- Underutilization of active materials and increased polarization limit performance in high-mass loading electrodes.
Purpose of the Study:
- To optimize the microstructural properties of Ni-rich LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode electrodes.
- To enhance electron transport and lithium-ion diffusion in high-mass loading electrodes through tailored conductive additives.
- To improve the electrochemical performance and energy density of NCM811-based LIBs.
Main Methods:
- Incorporation of multidimensional carbon conductive additives, specifically carbon black (CB) and carbon nanofiber (CNF), into NCM811 cathode formulations.
- Precise tailoring of conductive networks and porous characteristics within high-mass loading electrodes (approx. 23 mg cm-2).
- Electrochemical performance evaluation, including capacity retention over 100 cycles at 1 C and performance at 0.2 C.
Main Results:
- The NCM811 cathode with dual-carbon additives (CB + CNF) demonstrated excellent performance, retaining 94.8% capacity over 100 cycles at 1 C.
- Long-structured CNFs were found to significantly contribute to efficient conductive networks in thick, high-mass loading electrodes.
- Microstructural optimization via the dual-carbon system effectively reduced Ohmic contact resistance, leading to enhanced electrochemical performance.
Conclusions:
- The integration of a dual-carbon system (CB + CNF) synergistically enhances conductive networks and optimizes electrode porosity in NCM811 cathodes.
- This microstructural engineering approach is a simple yet fundamental principle for improving the performance of high-mass loading LIB electrodes.
- The study highlights a viable strategy for advancing energy density and rate capability in next-generation lithium-ion batteries for commercial applications.
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