What changes occur during the discharging process of Sodium-ion Battery?
钠电池放电是化学能转化为电能的释能过程,是充电过程的完全可逆反应。当电池连接用电负载后,电池内部形成电势差,原本稳定嵌入在负极微孔中的钠离子发生脱嵌,重新释放进入电解液中;钠离子顺着电势梯度反向迁移,穿过隔膜回流至正极区域,最终精准嵌入正极材料的晶格结构中,完成离子归位。与此同时,外部电路中电子从负极定向流向正极,形成持续稳定的电流,为电动车、储能设备、家电等负载提供电力。随着放电进行,电池内部化学能持续消耗,电压逐步下降,电量逐步减少,直至放电结束。
The discharging of Sodium-ion Battery is an energy release process in which chemical energy is converted into electrical energy, which is a completely reversible reaction of the charging process. When the battery is connected to the electrical load, a potential difference is formed inside the battery, and the sodium ions originally stably intercalated in the anode micropores are deintercalated and released back into the electrolyte; the sodium ions migrate in the reverse direction along the potential gradient, pass through the separator and flow back to the cathode region, and finally are accurately intercalated into the lattice structure of the cathode material to complete the ion homing. At the same time, in the external circuit, electrons flow directionally from the anode to the cathode, forming a continuous and stable current to provide power for electric vehicles, energy storage equipment, home appliances and other loads. As the discharging proceeds, the chemical energy inside the battery is continuously consumed, the voltage gradually drops, and the power continues to decrease until the discharging is completed.