In physics, an electronvolt (symbol eV), also written electron-volt and electron volt, is the measure of an amount of kinetic energy gained by a single electron accelerating through an electric potential difference of one volt in vacuum.

电子伏特（electron volt），符号为eV，是能量的单位。 代表一个电子（所带电量为1.6×10-19C的负电荷）经过1伏特的电位差加速后所获得的动能。 电子伏特与SI制的能量单位焦耳（J）的换算关系是1eV=1.602176634×10−19J

電子伏特 （英語： electron volt），簡稱 電子伏 或一顆電子的 帶電量，符號為eV，為 能量 單位。 代表一帶 電荷量 為1.602 176 634 x 10 −19 庫侖 的 電子 [1] 在 真空 中通過 1 伏特 電位差 所產生的 動能 [2][3]。

E=eV表示的是1电子电势变化1伏特对应的能量变化量，所以eV也是一个能量单位叫做 电子伏特。 所以这两个表达式就是两个能量表达式，两个E并不相等，更不存在hv/eV=E的结论，建议搞清楚各个符号的物理量，已经对应量纲，这样就比较容易理解了。

2 天之前 · Electric vehicle giant BYD unveiled a new charging system in China on Monday, intensifying already fierce competition in the world’s largest auto market and propelling it further ahead of rivals ...

2018年9月17日 · Ec, Ev, Ef这套系统是用来描述材料内电子系统的能量状态的。 Ec是导带，是这个电子系统中比较高的一种能量状态，大于等于这个能量状态的电子脱离了材料中单个原子的束缚，是可以在电场的作用下在材料中移动的。

An electron-volt (eV) is the work required to move an electron through a potential difference of one volt. Alternatively, an electronvolt is equal to the kinetic energy acquired by an electron when it is accelerated through a potential difference of one volt.

2025年3月5日 · Electric vehicle shoppers could be thrown a couple of curve balls in 2025 if the Trump administration goes through with some of its plans.

2023年2月6日 · Electric vehicles (EVs) have a battery instead of a gasoline tank and an electric motor instead of an ICE. But not all EVs are created equal. There are several types of EVs, all powered a little differently: Battery electric vehicles (BEVs) are powered by …

2 天之前 · BYD unveiled a new charging platform for electric vehicles and announced for the first time that it would build a charging network across China.