Using conductive carbon fabric to fabricate binder-free Ni-rich cathodes for Li-ion batteries
Sireesha Pedaballi
Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan
Search for more papers by this authorCorresponding Author
Chia-Chen Li
Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan
Correspondence
Chia-Chen Li, Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
Email: [email protected]
Search for more papers by this authorSireesha Pedaballi
Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan
Search for more papers by this authorCorresponding Author
Chia-Chen Li
Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan
Correspondence
Chia-Chen Li, Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
Email: [email protected]
Search for more papers by this authorFunding information: Ministry of Science and Technology, Grant/Award Number: MOST109-2221-E-007-113
Summary
Carbon fabric is proposed as an alternative current collector for fabricating water-processed LiNi0.8Co0.1Mn0.1O2 (NCM811) cathodes in order to prevent electrode corrosion problems from the use of conventional Al foil. The interlaced fiber bundles in carbon fabric feature plenty of voids and a large surface area to accommodate electrode materials without requiring an insulating binder. Further, the connected network structure of carbon fabric serves as a three-dimensional pathway for electron transport. However, our experiments also reveal the necessity to adopt a conductive agent, although a very high content of it reduces the uniform distribution of cathode materials. When increasing the content of conductive agent from 3% to 15%, capacity retention of the corresponding NCM811 cell rises from 76% to 93% after charge/discharge at 0.5 C for 300 cycles. The causes of this increase are discussed.
Supporting Information
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