Figure 3d. Specific capacity vs. cycle number of microcrystalline tin nitride in a Na half-cell at 50 mA g-1									
Cycle number	Reduction specific capacity (mA h g-1)	Oxidation specific capacity (mA h g-1)	Efficiency						
1	1320.79878	574.47373	43.49442						
2	632.46507	545.95903	86.3224						
3	600.93533	539.6398	89.79998						
4	590.05996	538.63728	91.28518						
5	586.44848	540.37479	92.14361						
6	584.43507	542.5821	92.83873						
7	585.32202	544.82366	93.08101						
8	586.4058	547.37451	93.34398						
9	582.52644	546.19986	93.76396						
10	582.44517	546.4141	93.81383						
11	582.38066	548.25672	94.14061						
12	583.20893	549.70747	94.25567						
13	583.91431	551.14326	94.3877						
14	582.36618	552.00885	94.78724						
15	581.23593	552.24535	95.01225						
16	581.81878	552.54962	94.96937						
17	582.02665	553.09999	95.03001						
18	583.48048	554.86475	95.09568						
19	581.67247	554.12808	95.26462						
20	580.96714	553.91526	95.34365						
21	580.2151	554.07804	95.49528						
22	579.45582	553.61579	95.54064						
23	577.99552	552.66194	95.61699						
24	577.16422	552.79546	95.77785						
25	576.13837	552.12414	95.83186						
26	574.59636	550.80751	95.8599						
27	572.21153	549.17281	95.97374						
28	569.83225	547.81523	96.13623						
29	567.60369	545.3466	96.07876						
30	565.2525	543.74534	96.19512						
31	564.11567	543.02525	96.26133						
32	563.04608	542.19104	96.29603						
33	563.13037	542.8961	96.40682						
34	562.12353	540.51901	96.15662						
35	558.94878	539.04615	96.43927						
36	556.85737	537.46408	96.51737						
37	555.05431	535.80271	96.53158						
38	553.53454	534.69931	96.59728						
39	552.7945	534.31126	96.6564						
40	551.22029	532.17622	96.54511						
41	549.70134	530.77161	96.55636						
42	547.30222	529.47683	96.74305						
43	546.81882	529.01776	96.74462						
44	546.41202	527.46886	96.53317						
45	544.66033	525.7811	96.53376						
46	542.56951	523.99638	96.57682						
47	541.82332	523.62708	96.64167						
48	541.56882	522.86502	96.54637						
49	539.45054	522.22447	96.80674						
50	538.58847	521.03591	96.74101						
