Supporting Information

Design of polydopamine-encapsulation multiporous MnO

cross-linked with polyacrylic acid binder for superior lithium

ion battery anode

Jufeng Zhang, Ting Ren, G. P. Nayaka, Peng Dong, Jianguo Duan, Xue Li,

Ding Wang*, Yingjie Zhang*

National and Local Joint Engineering Laboratory for Lithium-ion Batteries and

Materials Preparation Technology, Key Laboratory of Advanced Battery

Materials of Yunnan Province, Faculty of Metallurgical and Energy

Engineering, Kunming University of Science and Technology, Kunming

650093, China

E-mail: wangdingliverpool@foxmail.com (D. Wang), zyjkmust@126.com (Y.

Zhang)

Fig.S1 XRD pattern and SEM image of the MnO2 (EMD).

Fig. S2 Pore size distribution curve for the multiporous MnO.

Fig. S3 XRD patterns of MnO and PD-encapsulation MnO.

Fig. S4 XPS spectra of all regions for MnO-based electrode with and without

crosslink.

Fig. S5 CV curves of the cross-linked MnO-based electrode at a scan rate of

0.1 mV s-1.

Fig. S6 FTIR spectra of the crosslinked anode electrode after 500 cycles test.

Fig. S7 High-resolution spectrum of N 1s region of the cycled crosslinked

anode.

Table S1 Comparison of the cycling performances of reported MnO-based

anode materials with current work.

Materials Current density(mA g-1)

Cycles Reversible Capacity(mAh g-1)

Reference

MnO@BC 600 500 ~500 [1]MnO@NC 500 200 784 [2]MnO@C 100 100 812 [3]MnO@CNF 123 90 923 [4]MnO@C 100 100 421 [5]MnO@N-doped carbon 300 400 513 [6]MnO@N–C 500 500 667 [7]MnO@PCNTs 500 300 573 [8]MnO@C 98 120 861 [9]MnO@C composites 100 50 740 [10]MnO cubes 1000 500 420 [11]GNs@MnO 100 200 815 [12]MnO@Carbon 200 90 561 [13]MnO@C nanorods 200 200 509 [14]MnO@C nanowires 100 100 832 [15]MnO@C microtubes 200 60 610 [16]MnO@N-C 100 60 578 [17]MnO@RGOS 100 50 666 [18]MnO nanoflakes 246 100 646 [19]MnO@C nanoplates 200 30 563 [20]MnO@PD/PAA 300 500 682 This work

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