Vertically-aligned BCN Nanotube Arrays with Superior Performance in Electrochemical capacitors

Electrochemical capacitors (EC) have received tremendous interest due to their high potential to satisfy the urgent demand in many advanced applications. The development of new electrode materials is considered to be the most promising approach to enhance the EC performance substantially. Herein, we present a high-capacity capacitor material based on vertically-aligned BC(2)N nanotube arrays (VA-BC(2)NNTAs) synthesized by low temperature solvothermal route. The obtained VA-BC(2)NNTAs display the good aligned nonbuckled tubular structure, which could indeed advantageously enhance capacitor performance. VA-BC(2)NNTAs exhibit an extremely high specific capacitance, 547 Fg(−1), which is about 2–6 times larger than that of the presently available carbon-based materials. Meanwhile, VA-BC(2)NNTAs maintain an excellent rate capability and high durability. All these characteristics endow VA-BC(2)NNTAs an alternative promising candidate for an efficient electrode material for electrochemical capacitors (EC).