Fig. 5 plots of specific capacity and efficiency vs. cycle number of sulfur-deficient SnS in Na half-cells at 150 mA g−1.			
cycle number	discharge capacity/mAhg-1	charge capacity/mAhg-1	efficiency/%
0	735.068	1084.18	67.79944
1	769.992	833.72	92.35619
2	784.922	849.271	92.42303
3	794.823	856.763	92.77046
4	798.598	857.699	93.10935
5	796.568	856.022	93.05462
6	791.02	848.901	93.18165
7	786.238	842.456	93.32689
8	778.012	833.384	93.35576
9	767.95	820.212	93.62823
10	759.251	809.683	93.77139
11	750.618	800.036	93.82303
12	742.622	793.028	93.64386
13	737.758	788.392	93.57756
14	729.056	778.886	93.6024
15	723.573	771.025	93.8456
16	718.954	764.377	94.05751
17	713.57	756.374	94.34089
18	707.57	750.067	94.33424
19	699.891	746.72	93.72871
20	695.886	740.594	93.96322
21	692.459	736.935	93.96473
22	688.565	734.303	93.77124
23	684.806	730.527	93.74137
24	681.313	726.708	93.75334
25	677.77	722.98	93.74671
26	673.099	718.758	93.64751
27	669.203	714.421	93.67068
28	665.747	710.539	93.69605
29	661.581	707.216	93.54723
30	657.958	704.166	93.43791
31	655.241	702.117	93.32362
32	651.54	701.19	92.91918
33	649.349	697.572	93.08702
34	646.583	693.479	93.23757
35	643.215	688.375	93.43962
36	639.278	682.545	93.66093
37	635.329	677.425	93.78588
38	630.939	672.697	93.79245
39	626.92	668.766	93.7428
40	622.974	663.905	93.83481
41	618.855	660.509	93.69365
42	614.241	657.302	93.44883
43	611.984	653.634	93.62793
44	608.37	651.127	93.43339
45	605.004	648.416	93.30492
46	601.073	645.445	93.12536
47	597.45	642.073	93.05017
48	593.461	637.859	93.03953
