Abstract
Exploring advanced high‐rate anodes is of great importance for the development of next‐generation high‐power lithium‐ion batteries (LIBs). Here, novel carbon nanotubes (CNTs)/Li4Ti5O12 (LTO) core/shell arrays on carbon cloth (CC) as integrated high‐quality anode are constructed via a facile combined chemical vapor deposition–atomic layer deposition (ALD) method. ALD‐synthesized LTO is strongly anchored on the CNTs' skeleton forming core/shell structures with diameters of 70–80 nm the combined advantages including highly conductive network, large surface area, and strong adhesion are obtained in the CC‐LTO@CNTs core/shell arrays. The electrochemical performance of the CC‐CNTs/LTO electrode is completely studied as the anode of LIBs and it shows noticeable high‐rate capability (a capacity of 169 mA h g−1 at 1 C and 112 mA h g−1 at 20 C), as well as a stable cycle life with a capacity retention of 86% after 5000 cycles at 10 C, which is much better than the CC‐LTO counterpart. Meanwhile, excellent cycling stability is also demonstrated for the full cell with LiFePO4 cathode and CC‐CNTs/LTO anode (87% capacity retention after 1500 cycles at 10 C). These positive features suggest their promising application in high‐power energy storage areas.
Highlights
Power requirements due to compromised high-rate performance arising from low ionic/electronic diffusion coefficient and oxidation issue at large working current densities.[6,7,8,9,10] great efforts are shell structures with diameters of 70–80 nm the combined advantages made to exploring advanced high-power including highly conductive network, large surface area, and strong adhesion electrode materials
The electrochemical performance of the carbon cloth (CC)-carbon nanotubes (CNTs)/LTO electrode is completely studied as the anode of lithium-ion batteries (LIBs) and it shows noticeable high-rate capability, as well as a stable cycle life
Excellent cycling stability is demonstrated for the full cell with LiFePO4 cathode and Carbon cloth supported CNTs (CC-CNTs)/LTO anode (87% capacity retention after 1500 cycles at 10 C)
Summary
Power requirements due to compromised high-rate performance arising from low ionic/electronic diffusion coefficient and oxidation issue at large working current densities.[6,7,8,9,10] great efforts are shell structures with diameters of 70–80 nm the combined advantages made to exploring advanced high-power including highly conductive network, large surface area, and strong adhesion electrode materials. The electrochemical performance of the CC-CNTs/LTO electrode is completely studied as the anode of LIBs and it shows noticeable high-rate capability (a capacity of 169 mA h g−1 at 1 C and 112 mA h g−1 at 20 C), as well as a stable cycle life
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