Two-phase interface in LiMnPO4 nanoplates
Two-phase interface in LiMnPO4 nanoplates
复制标题
LiMnPO4 纳米板中的两相界面
DOI:
10.1016/j.jpowsour.2012.03.077
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发表时间:
2012-10
影响因子:
9.2
通讯作者:
John B. Goodenough
中科院分区:
文献类型:
--
作者:
Yanming Zhao;Jiping Zhou;Hui Xie;John B. Goodenough
The poor electrochemical performance of LiMnPO4nanoplates relative to that of isostructural LiFePO4is clarified. LiMnPO4nanoplates ca. 2 mm in diameter and 50 mm thick were prepared by a single solvothermal method. The [010] 1D Li+diffusion path lies in the plane of the platelets, and the two-phase LiMnPO4/MnPO4interface intersects the [010] direction. A 10% volume change and a cooperative Jahn-Teller distortion of the Mn3+sites in the MnPO4phase introduces a large strain across the interface that impedes the rate of interface motion and therefore the rate of Li extraction/insertion. Nevertheless, a capacity of 107.5 mAh g−1at the C/20 rate had a capacity fade of only 0.08% per cycle LiFePO4platelets, on the other hand, have the [010] 1D Li+diffusion paths perpendicular to the platelets and the LiFePO4interface parallel to the [010] direction, which leaves short diffusion lengths that are not blocked by structural changes.
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影响因子:
29.4
作者:
S. Schougaard;J. Bréger;Meng Jiang;C. Grey;J. Goodenough
通讯作者:
S. Schougaard;J. Bréger;Meng Jiang;C. Grey;J. Goodenough
影响因子:
9.2
作者:
Bakenov, Zhumabay;Taniguchi, Izumi
通讯作者:
Taniguchi, Izumi
影响因子:
3.9
作者:
K. Abraham;D. M. Pasquariello;E. Willstaedt
通讯作者:
K. Abraham;D. M. Pasquariello;E. Willstaedt
影响因子:
1.6
作者:
Li, Guangshe;Fang, Haisheng;Li, Liping
通讯作者:
Li, Liping
影响因子:
6.6
作者:
Tomoyuki Shiratsuchi;S. Okada;T. Doi;J. Yamaki
通讯作者:
Tomoyuki Shiratsuchi;S. Okada;T. Doi;J. Yamaki