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Micro-nano structure hard carbon as a high performance anode material for sodium-ion batteries.

ABSTRACT: Superior first-cycle Coulomb efficiency (above 80%) is displayed by filter paper-derived micro-nano structure hard carbon, and it delivers a high reversible capacity of 286?mAh g^-1 after 100 cycles as the anode for Na-ion battery at 20?mA g^-1. These advantageous performance characteristics are attributed to the unique micro-nano structure, which reduced the first irreversible capacity loss by limiting the contact between the electrode and electrolyte, and enhanced the capacity by accelerating electron and Na-ion transfer through inter-connected nano-particles and nano-pores, respectively. The good electrochemical performance indicates that this low-cost hard carbon could be a promising anode for Na-ion batteries.

SUBMITTER: Zheng P

PROVIDER: S-EPMC5067775 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature

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Micro-nano structure hard carbon as a high performance anode material for sodium-ion batteries.

Zheng Peng P Liu Ting T Guo Shouwu S

Scientific reports 20161018

Superior first-cycle Coulomb efficiency (above 80%) is displayed by filter paper-derived micro-nano structure hard carbon, and it delivers a high reversible capacity of 286 mAh g-1 after 100 cycles as the anode for Na-ion battery at 20 mA g-1. These advantageous performance characteristics are attributed to the unique micro-nano structure, which reduced the first irreversible capacity loss by limiting the contact between the electrode and electrolyte, and enhanced the capac ...[more]

PMID: 27752146

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