Effect of gelatin concentration on the synthetize of the LiFePO<ce:inf loc="post">4</ce:inf>/C composite for lithium ion batteries

• Gelatin has been used to regulate and control the synthesis of LiFePO4/C composite. • Influence of gelatin concentration on crystal structure of LiFePO4 has been observed. • The shape transformation from sphere-like to rod-like structure of LiFePO4/C has been revealed.