Complexing Agents on Carbon Content and Lithium Storage Capacity of LiFePO₄/C Cathode Synthesized via Sol-Gel Approach

Table 1

The different molar composition in the precursors results in the variation of carbon content and the reversible discharge/charge capacity of the final products.

Sample	In precursor					In product
	CA; C6H8O7	EG; C2H6O2	FeC2O4	LiFePO4	C/Fe; ratio	C (wt%) TGA	C (wt%); EDX	Capacity (mAh/g)
X			1	1	2 : 1	N/A	N/A	66
A	0.25		1	1	3.5 : 1	3.6	3.5	141
B	0.5		1	1	5 : 1	5.1	4.8	136
C	1		1	1	8 : 1	10.4	10.0	116
D		0.5	1	1	3 : 1	1.2	1.0	162
E		1	1	1	4 : 1	1.8	2.0	152
F		1.5	1	1	5 : 1	3.6	3.5	145
G		2	1	1	6 : 1	4.8	5.0	133
H	0.5	0.5	1	1	6 : 1	6.4	6.6	120
I	0.25	0.25	1	1	5 : 1	4.2	4.5	141