The rapid increase in energy consumption has severely rehabilitated human life urging to develop reliable and environmental friendly energy storage devices. Target oriented, systematic approach has been adopted to synthesis La doped CeO₂ nanostructures with percentage as La_xCe_1-xO₂ (X = 0,1,3,5,7) for potential super capacitors applications. Morphological doping impact on H₂ production, electrochemical and optical properties are thoroughly investigated. XRD studies revealed the crystalline phase purity and attained approximately 35 nm average crystallite size. The SEM images exposed that primary morphology nano-particles has been tuned into nanorods by increasing the La concentration in CeO₂ with size range 40∼60 nm. CV graphs depicted that the prepared electrodes obey the pseudo capacitive faradaic reactions behavior in nature. Maximum capacitance (925 F g^-1) has been achieved by La_0·05Ce_0·95O₂ which is better than numerous reported materials. The La_0·05Ce_0·95O₂ also exhibited excellent GCD stability with 87.8% retention exhibiting it suitability for supercapacitor applications. Furthermore, the La_0·05Ce_0·95O₂ showed the significantly higher H₂ (9 μmol h⁻¹g⁻¹) production rate as compared to undoped CeO₂ and La_0·01Ce_0·99O_2, La_0·03Ce_0·97O₂ samples. This higher production is attributed to the recombination rate and have strong substantial correlation with optical characteristics.

能源消耗的快速增长已经严重恢复了人类的生活，迫切需要开发可靠和环保的储能装置。已采用面向目标的系统方法合成 La _x Ce _1-x O ₂ (X = 0,1,3,5,7)百分比的La 掺杂 CeO ₂纳米结构，用于潜在的超级电容器应用。彻底研究了形态掺杂对 H ₂产生、电化学和光学性质的影响。XRD 研究揭示了结晶相纯度并达到了大约 35 nm 的平均微晶尺寸。SEM 图像显示，通过增加 CeO _{2中的 La 浓度，初级形态纳米颗粒已被调整为纳米棒。}尺寸范围为 40 ～ 60 nm。CV 图描绘了制备的电极在自然界中服从伪电容法拉第反应行为。La _0·05 Ce _0·95 O ₂达到了最大电容(925 F g ^-1 ) ，优于许多报道的材料。La _0·05 Ce _0·95 O ₂也表现出优异的GCD稳定性，保留率为87.8%，适用于超级电容器应用。此外，La _0·05 Ce _0·95 O ₂表现出显着更高的H ₂ (9 μmol h ^-1 g ^-1_{) 与未掺杂的CeO 2}和La _0·01 Ce _0·99 O _2、 La _0·03 Ce _0·97 O ₂样品相比的生产速率。这种较高的产量归因于复合率，并且与光学特性具有很强的实质性相关性。