Due to the toxicity of cadmium 間放in Ni-Cd batteries, the waste batter學個ies are complicated t微農o be treated and 答著the environment is po通紅lluted. Therefore, it請時 will be replaced by Ni-MH rec區有hargeable batteries made 下音of hydrogen storage alloy睡門s.

In terms of battery power, Ni-MH rechar術票geable batteries of the s美在ame size are about 1.5-2 time近訊s higher than Ni-Cd batteries, 做暗and are free of ca數新dmium pollution. They 師看have been widely used in mobile 什見communications, notebook鄉事 computers and other small port來日able electronic devi拍會ces. Nickel-hydrogen batt讀為eries with larger capacity have been 聽銀used in gasoline/electric hybri那妹d vehicles. Nickel-畫雜hydrogen batterie個市s can be used to charge and di討公scharge gasoline rapi錯還dly. When a vehicle is running at 就要high speed, the electricity gene樂議rated by the gene海窗rator can be stored in the nick數笑el-hydrogen batteries on t鄉訊he vehicle. When the vehicle is r物知unning at low sp靜低eed, it usually c妹件onsumes more gasoline than at跳請 high speed. In order to save gasoline,制討 nickel-hydrogen batteries can暗嗎 be used to drive the motor instead of靜鄉 the internal com相火bustion engine, which not only ensures 冷喝the normal operation of the c木什ar, but also saves a lot of gasoline.舊離 Therefore, hybrid 刀章vehicles have a greater market po謝外tential than traditional vehicles, an黃友d all countries in the worl雨討d are accelerating research in t遠化his area.