<b>High</b><b>-</b><b>entropy</b><b>-</b><b>doping effect in a rapid</b><b>-</b><b>charging</b><b> </b><b>Nb</b><b>2</b><b>O</b><b>5</b><b> </b><b>lithium-ion</b><b> </b><b>battery negative electrode</b>

<b>F</b><b>or </b><b>host lattice like </b><b>Nb</b><b>2</b><b>O</b><b>5</b><b>,</b><b> </b><b>doping without causing phase change is </b><b>quite </b><b>difficult</b><b>.</b><b> </b><b>Here </b><b>we </b><b>introduce </b><b>a</b><b>n emergent and rigid </b><b>high-entropy</b><b>-</b><b>doping effect </b><b>in Nb</b><b>2</b><b>O</b><b>5</b><b>. </b><b>Unlike traditional doping approaches, high-entropy-doping disregards the chemical functions of doping elements and focuses solely on their quantities. </b><b>The high-entropy</b><b>-</b><b>doping effect holds promise for introducing more phenomena in material research.</b>