For the first time,we design and synthesise a novel structure of hollow carbon nanosheets with MgAllayered double hydroxide(MgAl-LDH)as the template and poly-dopamine(PDA)as the carbon source via a facile method.To re...For the first time,we design and synthesise a novel structure of hollow carbon nanosheets with MgAllayered double hydroxide(MgAl-LDH)as the template and poly-dopamine(PDA)as the carbon source via a facile method.To reveal the significance of hollow carbon nanosheets,buffering large strains during the lithium de-intercalation cycle and prolonging the cycle life,SnO_(2)@C nanocomposites as anode materials for lithium-ion batteries(LIBs)are prepared.As a result,the structure of hollow carbon nanosheets contributes to the improvement of the capacity and stability of the SnO_(2) anode material.The capacity of hollow SnO_(2)@carbon nanosheets remains 693 mA h g^(−1) after 450 cycles with the current density of 0.5 A g^(−1) far better than that of pristine SnO_(2)展开更多
基金supported partially by the National Natural Science Foundation of China(no.51273158 and 21303131)the Fundamental Research Funds for the Central Universities(xjj2015119).
文摘For the first time,we design and synthesise a novel structure of hollow carbon nanosheets with MgAllayered double hydroxide(MgAl-LDH)as the template and poly-dopamine(PDA)as the carbon source via a facile method.To reveal the significance of hollow carbon nanosheets,buffering large strains during the lithium de-intercalation cycle and prolonging the cycle life,SnO_(2)@C nanocomposites as anode materials for lithium-ion batteries(LIBs)are prepared.As a result,the structure of hollow carbon nanosheets contributes to the improvement of the capacity and stability of the SnO_(2) anode material.The capacity of hollow SnO_(2)@carbon nanosheets remains 693 mA h g^(−1) after 450 cycles with the current density of 0.5 A g^(−1) far better than that of pristine SnO_(2)
